samedi 31 décembre 2022
5 histoires extraordinaires et non résolues d’ovnis : un enlèvement à Haravilliers ?
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« Jurassic World : Le Monde d'après » : est-il possible de recréer des dinosaures et est-ce une bonne idée ?
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Voici les événements géologiques qui ont le plus marqué 2022
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Les plus belles photos d'astronomie qui ont marqué 2022
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Une vraie révolution dans le secteur des panneaux solaires
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vendredi 30 décembre 2022
Découverte d'une nouvelle forme de vie sur Terre !
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Une interview de Abhay Ashtekar, pionnier de la gravitation quantique à boucles
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La supercar Bertone GB 110 va rouler avec un carburant fait de déchets de plastique : une première
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La vague de froid polaire qui a glacé les États-Unis a-t-elle un lien avec le réchauffement climatique ?
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Exploration spatiale : une année 2022 historique et intense !
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Les vidéos et images les plus drôles sur le climat en 2022
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jeudi 29 décembre 2022
Two B2Gold employees dead after robbery in Mali
B2Gold Corp. (TSX: BTO) issued a statement lamenting the passing of two employees following a robbery in Mali.
According to the Canadian miner, a local bus contractor travelling under gendarme escort and transporting B2Gold employees from the Fekola gold mine to Bamako encountered an ongoing armed robbery approximately 75 kilometres west of the capital city.
“Security forces accompanying the bus transport supported the safety of B2Gold personnel but, unfortunately, the incident resulted in the death of two employees,” the statement reads. “Initial reports indicate all other employees on the bus have been safely accounted for and are being transported to Bamako for assistance.”
B2Gold noted that the incident is not related to any terrorist activity.
The company also said that management’s immediate concerns revolve around the safety and well-being of B2Gold employees, as well as minimizing the impact on the surrounding area.
Mining and processing activities at Fekola remain unaffected.
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Two minerals never seen on earth extracted from meteorite sample
A team of researchers has discovered at least two minerals never before seen on earth in a 15-tonne meteorite found in Somalia – the ninth-largest meteorite ever found.
The two minerals, with a potential third mineral under consideration, came from a single 70-gram piece that was sent to the University of Alberta for classification.
“Whenever you find a new mineral, it means that the geological conditions, the chemistry of the rock, was different than what’s been found before,” Chris Herd, curator of the University of Alberta’s Meteorite Collection, said in a media statement. “That’s what makes this exciting. In this particular meteorite, you have two officially described minerals that are new to science.”
The new minerals – named elaliite and elkinstantonite – were identified rapidly by Andrew Locock, head of the university’s Electron Microprobe Laboratory, because each had been synthetically created before.
Elaliite is named after the meteorite itself, dubbed the “El Ali” meteorite because it was found near El Ali, in Somalia. Herd named the second mineral after distinguished planetary scientist Lindy Elkins-Tanton, due to her work exploring how the cores of planets are formed.
The research, conducted in collaboration with UCLA and the California Institute of Technology, suggests that if the scientist can obtain more samples, even more minerals may be found.
The problem is that the future of the meteorite is uncertain. Researchers say it appears to have been moved to China, so it remains to be seen whether additional samples will be available for scientific purposes.
For the time being, the team continues to examine the minerals to determine what they can share about the conditions in the meteorite when it formed. Herd also noted that any new mineral discoveries could yield exciting new uses down the line.
“Whenever there’s a new material that’s known, material scientists are interested too because of the potential uses in a wide range of things in society,” he said.
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Le 31 décembre sera sans doute le plus doux jamais enregistré
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Une start-up se vante de faire de la géoingénierie solaire : pourquoi c’est « de la folie pure » ?
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La plus ancienne station météo du monde n’a pas connu d’année aussi chaude en 364 ans !
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Il existerait un lien entre la consommation d’aspartame et l’anxiété
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Rogue Heroes : la réalité historique derrière cette nouvelle série diffusée par Canal+
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Une seule reine est à l'origine de l'invasion des frelons asiatiques en Europe !
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mercredi 28 décembre 2022
100 Starlink seraient déployés et actifs en Iran, selon Elon Musk
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La tempête hivernale aux États-Unis a secoué un lac et déclenche une… seiche record !
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How to give new life to lithium-ion anodes
Researchers at Rice University have reimagined a process they developed a while ago making it useful for extracting battery materials from electronic waste.
The “flash” Joule heating process was initially developed to produce graphene from waste. However, a recent reconfiguration allows it to quickly regenerate graphite anode materials found in lithium-ion batteries, removing impurities so they can be used again and again.
In a paper published in the journal Advanced Materials, the scientists explain that flashing powdered anodes from commercial batteries recycles some of what they called the “staggering” accumulation of waste they currently leave behind. In just a few seconds, a jolt of high energy decomposes inorganic salts including lithium, cobalt, nickel and manganese from an anode. These can be recovered by processing them with dilute hydrochloric acid.
“The production of lithium-ion batteries in 2026 is expected to be five times what it was in 2017, and right now, less than 5% of them are recycled,” head researcher James Tour said in a media statement. “That puts a heavy load on the environment, as these spent batteries are processed and the anodes burned for energy or sent to landfills. We’re claiming our process can recover critical metals and recondition anodes in a far more environmentally and economically friendly manner.”
According to Tour, flashing anodes degrades the solid-electrolyte interphase (SEI), which conducts lithium ions but also insulates the anode from detrimental reactions.
Flashing then coats the remaining graphite particles with an ion-permeable carbon shell that contributes to their future capacity, rate performance and cycling stability compared to materials conventionally recycled in a time-consuming and energy-intensive process known as high-temperature calcination.
The lab estimated it would cost about $118 to recycle one ton of untreated anode waste. They demonstrated that flash-recycled anodes have a recovered specific capacity of 351 milliamp hours per gram at 32 degrees Fahrenheit, superior to the rate performance and electrochemical stability of untreated or calcinated recycled anodes.
The recycled, flashed anodes the researchers tested retained more than 77% of their capacity after 400 recharge cycles.
“Beyond the spent graphite anodes, we are confident that the cathodes, the electrolytes and their mixtures can be effectively recycled or reconditioned by our method,” Weiyin Chen, lead author of the study, said.
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Offrez-vous le ciel profond et devenez astronome citoyen avec les eVscopes d'Unistellar
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Les États-Unis figés dans la glace après la « bombe météo » phénoménale
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mardi 27 décembre 2022
La tempête hivernale aux États-Unis a secoué un lac et déclencher une… seiche record !
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Le super-pouvoir des grenouilles de verre pourrait nous aider à éviter les crises cardiaques
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AVC : comment une IA sauve des vies et des séquelles les personnes frappées
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Les glaciers du Groenland fondent 100 fois plus vite que ce qui était prévu par les anciens modèles !
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La vague de froid polaire qui a endeuillé les États-Unis va-t-elle s'abattre sur la France ?
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États-Unis : des images glaçantes dignes du « Jour d’après » provoquées par une tempête hivernale historique !
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lundi 26 décembre 2022
Rescue work continues after gold mine collapse in China
Rescue work continues after 18 people were trapped underground as a gold mine in northwest China’s Xinjiang Uygur Autonomous Region collapsed on Saturday.
Approximately 40 people were working underground at the time of the accident in Yining County in the Ili Kazak Autonomous Prefecture. Twenty-two miners have been rescued.
“Now, the accurate location of the trapped people has been determined. However, the complex situation underground and the unstable surrounding rocks have brought many difficulties to the rescue work. The 18 people remain out of contact,” Lu Wei, chief safety officer of Xinjiang Nonferrous Metals Industry (Group) Co., Ltd told Xinhua News.
The mine is operated by Western Gold Mine.
Last September, 19 miners died after the collapse of a coal mine in the Qinghai region.
In December 2021, two miners died after a coal mine flooded in Shanxi province.
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Matière noire : le Cern sur la piste des noyaux d'antimatière
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Turns out that gold objects were also valued during the Bronze Age
Archaeologists from the University of Leicester and the University of Southampton have identified a 4000-year-old gold-working toolkit amongst the grave goods from an important Bronze Age burial near Stonehenge.
The toolkit was found at the Upton Lovell G2a Bronze Age burial, which was excavated in 1801 and is now on display at the Wiltshire Museum in Devizes. What the team did is re-examine the stone and copper-alloy grave goods found with the burial, revealing they are gold-working tools.
While carrying out a wear analysis of the grave goods, researcher Christina Tsoraki noticed what appeared to be gold residues on their surfaces. It also became clear that the stone tools had been used for a range of different purposes—some were used like hammers and anvils whereas others had been used to smooth other materials.
Tsoraki’s findings prompted the team to look at the residues using a Scanning Electron Microscope coupled to an Energy Dispersive Spectrometer to both confirm this identification, and investigate whether the residues were ancient or modern.
Their research, published in the journal Antiquity, confirmed that gold residues are present on five artifacts. They also found that these residues are characterized by an elemental signature consistent with Bronze Age goldwork found throughout the UK.
Previous research had identified possible gold traces on one of the stone grave goods. This new research has identified further four stone objects with gold on their surfaces and characteristic wear traces, linking a wider suite of items from the burial to the gold-working process. It also demonstrates that these gold traces are ancient. Thus, the team suggests the tools were used to make multi-material objects where a core object was crafted in a material like jet, shale, amber, wood or copper and decorated with a thin layer of gold sheet.
“Gold-working tools dating to the Early Bronze Age are extremely rare, so identifying a toolkit for creating composite gold objects is an extremely important discovery,” Chris Standish co-author of the study, said.
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L'Union européenne veut bannir les batteries non remplaçables des smartphones
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10 bonnes nouvelles pour la Planète en 2022
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Un trou noir dévorant une étoile comme vous ne l’avez jamais vu
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dimanche 25 décembre 2022
Alzheimer : un test de dépistage par simple prise de sang autorisé au Japon
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Switch, le programme de transformation numérique d’EDF au service de la transformation de l’ingénierie nucléaire
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Aviation : le moteur Rolls-Royce zéro carbone est prêt !
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Ondes gravitationnelles : peut-on détecter un vaisseau extraterrestre fonçant dans la Voie lactée ?
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Le pétrole, c'est du dinosaure en décomposition, vrai ou faux ?
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samedi 24 décembre 2022
Patient Bizarre : un accident provoqué par une guirlande de Noël
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5 histoires extraordinaires et non résolues d’Ovnis : un pilote signale un Ovni puis disparaît avec son avion
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10 bonnes nouvelles pour la Planète
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Les utilisateurs de DMT, une drogue hallucinogène, rapportent d'étranges expériences
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10 aberrations écologiques incroyables mais vraies !
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Cette planète se rapproche dangereusement de son étoile mourante
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vendredi 23 décembre 2022
New calls for banning coal as punishment at Christmas
A recent paper in the British Medical Journal calls for a ban on coal as punishment at Christmas.
Written by pediatrician Tamsin Holland Brow and her daughters Lilac and Marigold, the article makes the environmental—and compassionate—case for ending what they call an “outdated and potentially harmful” tradition.
According to Holland Brow, the traditional practice of rewarding well-behaved children with gifts but leaving miscreant ones with coal in the festive season persists; lumps of coal are widely available from major online retailers, and the #coalforchristmas hashtag crops up on social media.
The authors point out that not only does the burning of this non-renewable fossil fuel exacerbate the climate crisis, but its impact on air quality can also be bad for children’s health.
They suggest that receiving a lump of coal might also have a negative impact on kids’ mental health.
So as alternatives to punitive coal, the pediatrician and her daughters propose giving recycled/upcycled gifts, plant-based foods, walks and bike rides in nature, inspiring novels, or even a stick insect.
The Holland Brow family also makes the case for rewarding ‘naughtiness,’ citing Greta Thunberg, the eco-activist who inspired millions of children to go on school strikes for climate. As Thunberg says, children “can’t save the world by playing by the rules,” so these children deserve to be on the nice—not naughty—list.
While the co-authors Lilac and Marigold have admitted that they missed school to attend a climate march in 2019, they point out that “[coal] is a fossil fuel and so giving children [coal means] the adults are being the naughty ones.”
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Titanic : une étude scientifique pour déterminer les chances de survie du héros du film
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Attention avant d’utiliser des produits chimiques contre les punaises de lit !
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Exploration spatiale : l'année 2023 s'annonce palpitante !
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Voici les 146 espèces découvertes en 2022
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jeudi 22 décembre 2022
Les 8 événements géologiques majeurs de 2022
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Point-E, l’Intelligence artificielle qui transforme le texte en objets 3D
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Deep Climate : « Réapprendre à vivre et à travailler dans des conditions un peu plus extrêmes » (doublon à ne pas publier)
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Attention aux virus cachés dans les moteurs de recherche
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Ce colorant alimentaire rouge pourrait déclencher des maladies intestinales
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« Jurassic World : Le Monde d'après » : est-il possible de recréer des dinosaures et est-ce une bonne idée ?
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Deep Climate : « Réapprendre à vivre et à travailler dans des conditions un peu plus extrêmes »
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On pourrait transformer l'astéroïde Bennu en la première colonie spatiale
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mercredi 21 décembre 2022
Sigma Lithium begins Brazil mine plant commissioning
Sigma Lithium (TSX-V; NASDAQ: SGML) has started commissioning the first module of the production plant – the Greentech Plant – at its 100%-owned Grota do Cirilo lithium project in Minas Gerais, Brazil.
The Canadian miner said the dry module crushing circuit began operating on time and within budget, adding it expected the full plant to be up and running by February 2023.
Commissioning on the wet module dense media separation circuit is expected to also start in February and be completed by April, at which point the company intends to start commercial production, the company said.
The Vancouver-based miner also announced that it commissioned the system that will pump water from Rio Jequitinhonha, which is 6km from the sewage treatment plant, to make the water suitable for the Greentech Plant.
In addition, Sigma noted its local partner Miazga Participações, has acquired a farm property with tropical forestry with the objective of preserving endangered tropical forestry that would be suppressed otherwise.
The miner will donate this area to the State Forestry Authority (IEF – Instituto Estadual de Florestas) for permanent preservation.
Top producer
Sigma Lithium this month secured up to $100 million from shareholder Synergy Capital to fund the company until August 2023. The investment will help the company build the initial phase of a $155-million expansion of the battery-grade lithium mine.
During this first production phase, Grota do Cirilo is expected to generate up to 270,000 tonnes per year of high purity battery grade lithium concentrate, equal to about 36,700 tonnes per year of lithium carbonate equivalent (LCE).
Based on the results of a study to triple battery-grade lithium concentrate production, Sigma says the project has the potential to churn out 768,000 tonnes (104,200 tpa LCE) from the second to the eighth year of operations.
Such capacity would make Grota do Cirilo fall just outside the world’s top five lithium producers in terms of output capacity after Albemarle, SQM, Ganfeng, Pilbara Minerals and Galaxy.
Total output will then drop to 491,000 tonnes in years nine to 13, Sigma Lithium said.
Sigma noted that the planned expansion could be achieved by the addition to the Greentech lithium plant of a single larger additional dense media separation module paired with a proportional crushing module.
The company’s co-CEO, Ana Cabral-Gardner, believes that Brazil has the potential to become a “green lithium powerhouse”.
Brazil is already a global case study in low carbon mobility, powering cars with ethanol, biofuels and natural gas. With Sigma Lithium in the mix, the country now has one of the few companies globally that has proven its ability to produce lithium in an environmentally sustainable manner.
Sigma has been producing environmentally sustainable battery-grade lithium concentrate on a pilot scale since 2018.
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En Allemagne, des pirates peuvent prendre la main sur les feux de signalisation
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Pourquoi les saisons du calendrier ne correspondent plus à la météo actuelle
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L'hyposmie, un nouveau symptôme de la Covid-19 ?
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InSight tire sa révérence
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mardi 20 décembre 2022
Teck sells closed Quintette coal mine for $120 million
Teck Resources (TSX: TECK.A | TECK.B) (NYSE: TECK), Canada’s largest diversified miner, has reached a deal to sell its closed Quintette steelmaking coal mine to Conuma Resources for $120 million cash.
The asset, in northeast British Columbia, has been shuttered since 2000, after being in operations for 18 years.
Teck said Conuma Resources, a Canadian a steelmaking coal producer, will also pay an ongoing 25% net profits interest royalty once it recovers its investment in Quintette.
The Vancouver-based miner is using strong cash flows from its coal business to expand its copper development, including the Quebrada Blanca Phase 2 (Q2) expansion project in Chile.
Once in operation, Q2 would double Teck’s copper production, extending Quebrada Blanca’s life by 28 years and boosting production to 300,000 tonnes of copper a year from 287,000 tonnes in 2017.
Major steelmakers are starting to move away from coking coal used in blast furnaces and switching to greener alternatives, such as hydrogen.
The International Energy Agency published a report in November that shows “hydrogen-based steelmaking has picked up significant momentum”. According to the agency, the number of steelmakers’ announcements to use such technology tripled over the prior 12 months.
According to the World Steel Association, the industry is responsible for between 7% and 9% of the global emissions created from the burning of fossil fuels.
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Aviation : le moteur Rolls-Royce zéro carbone est prêt !
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Ondes gravitationnelles : peut-on détecter un vaisseau extraterrestre fonçant dans la Voie lactée ?
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La première édition de Ma thèse en 3 minutes par Orange fait la Une !
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lundi 19 décembre 2022
IAMGOLD gets $340 million funding from Sumitomo for Côté gold project
IAMGOLD (TSX: IMG) (NYSE: IAG) announced Monday that it has reached an agreement to amend its joint venture agreement with Sumitomo Metal Mining and SMM Gold Cote.
Under the agreement, beginning in January 2023, Sumitomo will contribute funding amounts to the Côté gold project in Ontario, Canada, for approximately $340 million over the course of 2023.
IAMGOLD will transfer an approximate 10% interest in Côté to SMM. It will also pay a repurchase option fee to SMM and shall have the right to exercise the repurchase option between November 30, 2023, and November 30, 2026, to return to its full 70% interest in the Côté gold project.
IAMGOLD will remain the operator of the Côté gold project.
“The financial support of Sumitomo demonstrates to all of our stakeholders the strong validation of the Côté gold project from our partner and our alignment to complete construction and commence production,” Maryse Bélanger, interim CEO of IAMGOLD, said in a news release.
“On behalf of the Board and IAMGOLD, I want to thank Sumitomo for their continued support and dedication as together we continue to build what will be Canada’s third largest gold mine by production.”
“The Côté gold project remains on track for gold production in early 2024, in line with the updated schedule and cost to complete as outlined on our most recent project update,” Bélanger said.
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Australia expects sharp lithium price pullback in 2024
In its quarterly report released on Monday, the Australian government said it expects spodumene prices to rise from an average of $2,730 a tonne in 2022 (from just $598 in 2021) to average $4,010 a tonne in 2023 as record spot prices feed into contracts. However, 2024 will see a softening in the market to $3,130 in 2024.
Lithium hydroxide prices are set to follow a similar pattern and are expected to lift from $17,370 a tonne in 2021 to $39,900 in 2022 and $61,200 in 2023, moderating to an annual average of $48,500 in 2024.
Rapid price movements and the relative immaturity of the market will likely lead to ongoing uncertainty, according to the Department of Industry, Science and Resources, adding that should supply concerns ease prices could fall more quickly:

“While expansions to production are already underway in Australia and overseas, there are long lead times for lithium mine and brine operations. Moreover, the potential for delays in bringing such large volumes of lithium into production, mean risks remain of persistent supply shortages over the next few years.
“However, one of the drivers of recent high spot prices appears to be a push by refiners and battery makers to build up inventories, due to concerns about global supply chains. The lack of data on global lithium stocks makes it difficult to judge how well battery producers have built up stockpiles.
“If these concerns ease, prices could moderate more rapidly over the outlook period. Prices may also ease if global economic growth slows more sharply than the IMF has forecast.”
Production surge
The Department expects global output to rise from 551,000 tonnes lithium carbon equivalent (LCE) in 2021, to an estimated 691,000 tonnes in 2022. Next year 915,000 tonnes are forecast, a 32% jump from 2022.
In 2024 production would climb above the 1m tonnes mark for the first time with Australia’s share coming to nearly half the global total at 470,000 tonnes, thanks to a pipeline of projects.

This includes the almost complete expansion of Mineral Resources and Ganfeng Lihtium’s Mt Marion mine, Liontown’s Kathleen Valley project which received a final investment in June and all major approvals in Q3 this year, and Core Lithium’s Finniss project near the city of Darwin where first concentrate production is expected in the first half of 2023.
The sharp production rise will also be boosted by expansions to SQM and Albemarle brine operations in Chile while state-owned copper miner Codelco is undertaking exploration in the Salar de Maricunga, with drilling due for completion early next year.
In Argentina, new and expanded brine operations by Allkem, Livent and Minera Exar will add to output Elsewhere. Piedmont Lithium has completed a pre-feasibility study for its Ewoyaa project in Ghana with first production expected late next year while European Lithium is progressing arrangements to secure additional capital to progress its Wolfsberg hard rock project located 270km south-west of Vienna, Austria.
Spot prices turn down
Last week spot Chinese lithium prices fell for the first time since May as uncertainty grows about demand in the world’s second-largest economy following the easing of covid-19 restrictions and the looming end to electric vehicle subsidies.
Lithium prices have defied predictions of a sharp pullback, however, and ex-works Chinese battery grade lithium hydroxide is still up 170% year-to-date averaging $81,000 a tonne during the first two weeks of December, according to Benchmark Mineral Intelligence. Lithium carbonate prices have followed a similar trajectory according to the London-headquartered battery supply chain and pricing specialists.
Benchmark data show spodumene prices up 257% this year averaging some $5,900 a tonne for 6% concentrate FOB Australia in November. Benchmark commented that spodumene contract pricing mechanisms tied to the lithium chemicals spot market had been successfully renegotiated, allowing for a shorter lag time for pricing movements in the chemicals market to be reflected in spodumene pricing.
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Grâce à une Intelligence artificielle, cet Américain a fait croire pendant un mois qu'il était en voyage
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Gold may be the solution to foggy glasses
A recently developed ultrathin, gold-based transparent coating that is able to convert sunlight into heat is being proposed as a solution to prevent fogging in glass surfaces such as those in eyewear or windshields.
The soon-to-be patented coating has been created by researchers at ETH Zurich employing methods that are used extensively in manufacturing such as vapour deposition under vacuum in a clean room to deposit minuscule amounts of gold onto the surface being treated.
The coating is made up of a single gold nanolayer and is significantly thin, which makes it transparent as well as pliable. Further, it absorbs infrared light selectively.
The new material also takes an approach that differs from conventional antifogging methods. Traditionally, surfaces are coated with water-attracting molecules, which results in an even spread of condensation. This is how antifog sprays work. But the new method instead heats the surface, thus preventing humidity-induced condensation from forming there in the first place. It’s the same principle as is used for a car’s rear window.
The problem with the way things are done in cars is that electric heating is required, which is inefficient and energy wasteful. In contrast, the new coating is heated passively and requires, during the daytime, no additional energy source.
Tiny gold particles
The way the coating is designed involves minuscule, extremely thin clusters of gold sandwiched between two ultrathin layers of titanium oxide, an electrically insulating material. Due to their refractive properties, these two outer layers increase the efficacy of the heating effect. Moreover, the top layer of titanium oxide acts as a finish that protects the gold layer from wear. This whole “sandwich” is just 10 nanometres thick. By way of comparison, a common gold leaf is twelve times thicker.
The individual gold clusters touch each other minimally, which is what allows the gold layer to just start conducting electricity. So in the absence of sunlight, it would still be possible to use electricity to heat the coating.
“Our coating absorbs a large proportion of the infrared radiation, which causes it to heat up – by up to 8 degrees Celsius,” ETH doctoral student Iwan Hächler, who was a driving force behind the development, said in a media statement.
Given the positive results of their initial tests, Hächler and his colleagues will now develop the coating further for other applications. In the process, they will investigate whether other metals work just as well as gold.
They believe that in addition to eyewear and windshields, this antifogging method could be used wherever objects must be both heated and transparent – such as windows, mirrors or optical sensors.
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Newcrest CEO Biswas leaves Australia’s top gold miner
Newcrest Mining (ASX: NMC) announced on Monday that its chief executive officer Sandeep Biswas is retiring from the role effective immediately, after eight years at the helm of Australia’s top gold miner, but will stay as an advisor until March 2023.
Chief financial officer Sherry Duhe, who joined the company in February, will step in as interim chief executive while a global internal and external search for a replacement is underway.
Chief operating officer for the Americas, Craig Jones, will also assume responsibility for all of Newcrest operations on an interim basis, Newcrest said.
Biswas’ retirement follows open investor discontent over Newcrest’s remuneration report, particularly the CEO’s pay, at the company’s annual meeting last month.
Two rival proxy groups agreed at the meeting that the bonuses paid to Biswas were too generous in relation to the company’s financial performance.
Today’s announcement also comes less than a year after the executive issued a mea culpa published by The Australian Financial Review. In the article, Biswas apologized to those who felt bullied during his tenure and vowed to change his management style.
Newcrest chairman Peter Tomsett said Biswas’s apology was genuine and the right thing to do.

“I hope that moments like that force many people, no matter where they work, to hold up a mirror to themselves, and have a look at that,” he noted.
He also said the board had been in talks with Biswas “for some time” and felt it was time to speed up the move.
“Our company has strong financial fundamentals, a relentless focus on safety and an unrivalled international portfolio of long-life, low-cost gold and copper assets, all of which have been transformed during Sandeep’s tenure,” Tomsett said.
“We also have a meaningful and increasing exposure to copper – a resource vital to global decarbonization efforts,” he added.
Newcrest currently operates the large open-pit and underground Telfer mine in Western Australia’s Pilbara region and is the top gold producer in British Columbia, Canada since the 2019 acquisition of the Red Chris copper and gold mine.
In January this year, the company expanded its footprint in Canada with the takeover of Pretium Resources, which handed it the Brucejack gold mine.
The company also has the Lihir and Hidden Valley mines in Papua New Guinea.
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Les températures très basses ou très élevées augmentent le risque de décès selon une étude
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dimanche 18 décembre 2022
Denisova-Homo sapiens : une hybridation réussie pour le système immunitaire des Papous ?
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Most Canadians see clean energy as safer, more affordable than fossil fuels – survey
Two-thirds of Canadians think a clean energy system such as hydro, wind, solar power and electric vehicles would be more affordable than a fossil fuel energy system, a recent survey shows.
According to the study conducted by Clean Energy Canada and Abacus Data, such a view is shared by a majority in every region or province, except for Alberta.
The survey also shows that over seven in ten Liberal, National Democratic Party and Green Party supporters feel this way, as do four in ten Conservative Party adherents.

The poll also asked participants to share their views on the renewable energy market and two-thirds responded that ‘green’ systems are more secure – that is, prices and supply seem less influenced by goal markets.
This view is shared by a majority in every region or province, including in Alberta. Over three in four Liberal, NDP, and Green Party supporters feel this way, as do half of Conservative Party supporters.
“Increasingly, Canadians see that the transition to clean energy is not only an economic opportunity—but an opportunity to lower their energy bills. Canadians also recognize clean energy as more secure. This view reflects reality, as clean energy electricity rates are less beholden to global markets,” Trevor Melanson, communications director at Clean Energy Canada, said in a media statement.

The survey also asked Canadians about their level of knowledge of the US’s Inflation Reduction Act, which seeks to invest $370 billion into climate action to spur investment in clean energy and greenhouse gas emission reductions.
Under half of Canadians are aware of the law and when asked whether it is important or not for Canada to also invest in clean-energy-related economic opportunities, 83% said it is either very or somewhat important. Large majorities in every region of the country and across the political spectrum shared this view.
The method
The survey was conducted with 1,500 Canadian adults from November 25 to December 1, 2022. A random sample of panellists was invited to complete the survey from a set of partner panels based on the Lucid exchange platform.
The margin of error for a comparable probability-based random sample of the same size is +/- 2.5%, 19 times out of 20.
The data were weighted according to census data to ensure that the sample matched Canada’s population according to age, gender, educational attainment, and region.
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Pourquoi notre santé dépend de la protection de la biodiversité
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Le projet dérangeant EctoLife veut révolutionner la façon dont nous faisons les bébés
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Les créateurs de ChatGPT vont mettre en place une signature cryptographique pour les textes générés
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Pourquoi les éoliennes seraient 4 fois plus bénéfiques pour la santé ?
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samedi 17 décembre 2022
5 histoires extraordinaires et non résolues d’ovnis : des millions de témoins d'un objet dans le ciel chinois
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5 histoires extraordinaires et non résolues d’ovnis : l’étrange observation de l’équipage du vol Nice-Londres
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La graisse sous-cutanée protège le cerveau des femmes
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Notre fournisseur d’électricité nous a lancé le défi de baisser notre consommation de 5 %, et nous avons réussi à la réduire de 40 % !
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Perseverance a enregistré le son d’une tornade sur Mars pour la première fois
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Une solution pour construire sa maison sans clou ni vis
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La maladie de Parkinson est bien plus fréquente qu'on ne le pensait
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Produire de l’électricité sur n’importe quelle surface, c'est possible
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vendredi 16 décembre 2022
Les chercheurs vont étudier la sueur du vrai Dracula, Vlad l'Empaleur
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Dell prépare un PC portable qui se démonte en moins d'une minute !
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Découverte au Fayoum de nombreux objets funéraires et des portraits
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Alzheimer : cette découverte pourrait expliquer pourquoi les femmes sont deux fois plus touchées par la maladie
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MiniMit : le boîtier rose qui ressuscite votre Minitel !
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jeudi 15 décembre 2022
De Beers Group awards $45K in scholarships to women in STEM
De Beers Group has awarded $45,000 in scholarships to 10 Canadian women, as what the company says is a commitment to support women in science, technology, engineering and math (STEM) studies in Canada.
From the more than 475 applications, the winners are eight women from the Northwest Territories, one from northern Ontario and one from Nunavut. Each receives $4,500 as they enter year one of a program.
• Amelie Aubrey-Smith, NWT: Bachelor of Science
• Brenna Beck, NWT: Bachelor of Science
• Jada Beck, NWT: Undergraduate in Medical Education
• Zoe Clark, NWT: Bachelor of Science
• Rosalyn French, NWT: Bachelor of Science
• Emma Gelinas, Ontario: Bachelor of Science
• Shelby Martin, NWT: Bachelor of Science in Nursing
• Crystal Mitchell, Nunavut: Diploma in Environmental Technology
• Angela Storr, NWT: Bachelor of Commerce, Business Technology Management
• Stella Wong, NWT: Bachelor of Applied Science
The 2022 scholarships represent a three-year $135,000 program launched earlier this year as part of De Beers’ Building Forever program in Canada. It builds on a partnership between De Beers Group and UN Women that provided US$408,000 in scholarships to support Canadian women in STEM programs between 2018 and 2021.
In addition, De Beers is funding four new $5,000 entrance scholarships annually over the next four years to support women in STEM at the University of Calgary, two in science and two in engineering.
Moses Madondo, managing director of De Beers Group, said, “It’s clear from the overwhelming response that there is still a need to accelerate opportunities for women in STEM. As a company committed to building forever, we remain focused on identifying and removing systemic barriers to social and economic inclusion because we recognize that equal opportunity will benefit us all.”
Individuals interested in applying for these scholarships need to apply directly through their university.
More information on De Beers can be found at https://ift.tt/2VdhPGo.
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L'iguane marin éternue... du sel !
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5E Advanced Materials, Estes Energetics to produce boron-based materials for rockets
California-based 5E Advanced Materials (ASX: 5EA), the company that owns Fort Cady – the largest conventional boron deposit in the world – has entered into a non-binding letter of intent with aerospace engineering firm Estes Energetics to collaborate in producing boron advanced materials for solid rocket motors.
In a press release, the companies said that the ultimate goal of their collaboration is supporting the US space and military industries and the specific focus will be on solid rocket motor ignitors.
According to the firms, they will also consider broader cooperation that will entail the creation of production facilities, the development of business activities and the sharing of technical know-how in the boron space.
“Estes is an industry leader in the solid-propellant and aerospace markets. An important consideration of the collaboration is our combined mission to onshore critical materials and technologies that serve critical US government needs. We intend to have a long-term partnership with Estes as we focus on continuous innovation in the boron advanced materials space,” Dino Gnanamgari, 5E chief commercial officer, said in the media brief.
Gnanamgari and Karl Kulling, Estes chief executive officer, pointed out that there is a growing concern in the US related to the import of raw materials. Thus, their joint initiative is considered a positive step towards the building of a supply chain that starts from a domestic mine and continues all the way through products broadly used in solid rocket motors, pyrotechnics, and other applications.
“Boron advanced materials complement our existing manufacturing and research efforts in critical chemicals and solid rocket motors. Boron is used in mature products and has great promise in high-performance fuels,” Kulling noted.
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SpaceX reporte le lancement de la mission révolutionnaire du satellite Swot
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Switch, le programme de transformation numérique d’EDF au service de la transformation de l’ingénierie nucléaire
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L'étonnante intelligence collective des troupeaux de moutons
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Comment fonctionnent les marées ? (Astrozoom #22)
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mercredi 14 décembre 2022
Avatar : un monde comme Pandora peut-il exister ?
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La première édition de Ma thèse en 3 minutes par Orange fait la Une !
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N’importe quelle surface pourra bientôt produire de l’électricité grâce à ce système
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La sueur de « Dracula » va être analysée
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mardi 13 décembre 2022
Brixton pivots to cobalt at Langis with strong drill results
Brixton Metals (TSXV: BBB) says the first batch of drill results from its Langis cobalt project in northeast Ontario confirms high-grade ore.
Hole LM-22-254 cut 30.5 metres of 0.35% cobalt, 5.97 grams silver per tonne and 0.08% nickel from 121 metres down hole, Brixton said in a news release on Dec. 13. The core included 10.02 metres of 0.92% cobalt, 3.5 metres of 1.89% cobalt and 0.5 metre of 9.01% cobalt, 72.5 grams silver and 2.58% nickel, data showed.
Vancouver-based Brixton is pivoting from silver to cobalt at its Langis project about 500 km north of Toronto as it attempts to take advantage of the soaring demand for electric vehicle battery metals and proximity to a nearby processing plant under construction. A 7,000-metre drilling program focusing on cobalt is to be completed by Dec. 20, the company said.
“This program is set out to target cobalt-nickel mineralization specifically as the demand for battery metals increases,” Brixton vice president of exploration Christina Anstey said in the news release. “We are very excited that our first hole in 2022 has confirmed a high-grade of cobalt mineralization at the Langis project.”
Still, Langis is secondary to Brixton’s Thorn copper-gold porphyry project in British Columbia after giant BHP (NYSE: BHP; LSE: BHP; ASX: BHP) bought about a fifth of the company last month for C$13.6 million.
The explorer’s four previous drill campaigns at Langis in the Cobalt Camp of Ontario near the Quebec border totaled 35,100 metres. They focused on deposits linked to an underground silver mine that started in 1905 and closed in 1990 due to low metal prices. The mine produced 10.4 million oz. of silver and 358,340 lb. cobalt from shallow depths.
Langis, on the north shore of Lake Timiskaming, is about 20 km from Electra Battery Materials’ (TSXV: ELBM; NASDAQ: ELBM) refinery for cobalt, which is to start next spring. Electra plans to expand the site into North America’s first battery park for refining nickel, copper, lithium, manganese and graphite.
Brixton chairman and chief executive officer Gary Thompson said Langis is a cornerstone asset that deserves further drilling and more investors.
“The Langis project offers great potential for silver, cobalt and nickel,” Thompson said. “We welcome potential joint venture partners to reach out regarding this unique opportunity.”
Brixton says the cobalt and silver mineralization at Langis appear to be derived from separate mineralizing systems, although the host veins commonly share structures and can occur together frequently. Cobalt occurs as cobaltite and other nickel carbonyl arsenides and sulpharsenides in quartz-calcite veins, the company says.
The mineralization is hosted in three main rock types: Archean Keewatin volcanic and metasedimentary rocks, Proterozoic Coleman Member sedimentary rocks of the Huronian Supergroup and Proterozoic Nipissing diabase, Brixton says.
In May 2020, the company announced bonanza-grade silver assays at Langis. Drill hole 20-83 in the Shaft 3 area of the old mine intersected 5 metres grading 1,293.34 grams silver per tonne from 11 metres downhole.
Shares in Brixton gained 1.8% on Tuesday in Toronto, valuing the company at C$104.7 million.
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Probe Metals drills ‘record gold interval’ at Val-d’Or project in Quebec
Probe Metals (TSXV: PRB) has drilled the highest-grade core yet at its Val-d’Or East project’s Monique deposit in Quebec as it prepares to expand its mineral resource estimate next month.
Expansion drill hole MO-22-475 cut 22.9 metres grading 4.9 grams gold per tonne cut and 19.2 grams gold uncut (with a 100 grams per tonne cap) from 22.6 metres down hole, Probe said in a news release on Tuesday. The core sample included 427 grams gold over 1 metre, 227.8 grams gold over 1 metre and 17 grams gold over 4 metres, Probe said.
Infill drill hole MO-22-499 returned 37.3 metres grading 2.4 grams gold from 90 metres down hole; hole MO-22-484 cut 44 metres grading 1.8 grams gold from a depth of 76 metres, and hole MO-22-482 found 3.2 grams gold over 21.6 metres, data show.
“The holes released today have provided us with yet another record gold interval and we are in the enviable position of having a deposit that remains open in all directions,” Probe chief executive officer and president David Palmer said in the release.
“In 2023 our goal will be to demonstrate the phenomenal growth potential that we see in this project by continuing to grow resources, as well as stepping out to test some of the regional targets we have been developing over the past two years.”
Toronto-based Probe has outlined a gold system 2.2 km long, 1 km wide and 600 metres deep that will inform a new resource estimate scheduled for January. The strong drill results follow a base metals discovery announced last week at its La Peltrie joint venture also in Quebec, broadening Probe’s success while some analysts rate the company as a leading explorer.
Probe has completed 165,000 metres in the drilling program at the gold project 25 km east of Val-d’Or and will resume drilling in January, Palmer said. This year a total of 85,000 metres of drilling across 299 holes has been completed at Monique. The Val-d’Or East property, which includes the Monique, Pacalis and Courvan deposits, lies among three past-producing mines: Beliveau, Monique and Bussiere. Updates for the Pascalis and Courvan deposits are expected in the first quarter of 2023, the company said.
BMO Capital Markets said Probe’s drilling will increase the amount of ore in an open-pit concept and likely expand the mine’s processing capacity.
“The continued success at Monique is clearly growing the pits, and in our view will increase the contribution to the resource, and likely to the future mine plan, from open pit mining versus underground,” mining analyst Andrew Mikitchook wrote in a note on Tuesday.
“We also see the potential for a larger throughput at the project in addition to a longer mine life, thanks to the continued expansion of mineralization at Monique both inside and beyond the preliminary economic assessment (PEA) pit shells.”
The 2021 PEA suggested an open-pit and underground project capable of producing more than 200,000 oz. gold a year for a 13-year mine life.
Canaccord Genuity said Probe is its top pick among gold developers because of how it’s increased its resource estimate by 434% since 2016, as well as the project’s cost-effectiveness, output potential, and low geopolitical risk. Analyst Michael Fairbairn welcomed the strong drilling results.
“Importantly, gold intercepts were relatively shallow at an average depth of 206 metres versus about 250 metres from previously released intercepts,” Fairbairn said in a note on Tuesday. “Probe’s impressive results from Monique bodes well for the January 2023 resource update.
The results of 341 other holes at the project are pending as Probe continues with geotechnical, metallurgical and other studies to complete a pre-feasibility study due in autumn next year.
A July 2021 measured and indicated resource estimates for the Val-d’Or East property showed 29.78 million tonnes grading 1.81 grams gold per tonne for 1.73 million oz. contained metal.
The project’s other properties, Lapaska, Senore and Sleepy contain 2.67 million tonnes of 3.19 grams gold per tonne for 273,900 oz. gold in an inferred resource estimate from the same time.
The analysts’ support of the drilling results follows the discovery this month by Probe and Midland Exploration (TSXV: MD) of a new copper-gold-silver-molybdenum deposit at the La Peltrie project in Quebec’s Detour Lake region. Drill hole LAP-22-012 intersected 345.5 metres grading 0.2% copper equivalent from surface.
“This first set of drill results highlights the potential of Probe’s substantial Detour project,” Fairbairn said in a Dec. 6 note. “Although low grade, the mineralized zone contained higher grade intercepts and management believes it has the potential to extend laterally and at depth.”
The La Peltrie or Detour gold project lies across 777 sqkm about 190 km north of Rouyn-Noranda in the mineral-rich Abitibi region.
Probe shares rose 4.7% on Tuesday to trade at C$1.24 in Toronto. The stock touched a high of C$2.31 this year in March and April and is valued at about C$187 million.
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La vitamine D protégerait les personnes âgées de la démence
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Découverte surprenante de poches d'eau de mer scellées depuis 390 millions d'années !
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Gold Fields CEO Griffith leaves after failed Yamana takeover
Gold Fields (JSE, NYSE: GFI) chief executive officer Chris Griffith is stepping down on December 31, only a month after the company’s failed attempt to take over Canada’s Yamana Gold (TSX: YR)(NYSE: AUY).
Griffith, 57, was appointed CEO of the South African gold miner in April 2021, taking over from Nick Holland, who retired after 13 years. Griffith had previously held the top job at Anglo American Platinum and Kumba Iron Ore.
Under his direction, Gold Fields kicked off plans to expand into North America, beginning with the attempted acquisition of Yamana. Two Canadian miners, Agnico Eagle Mines and Pan American Silver, teamed up in late October and put higher bid on the table, finally trumping Gold Fields’.
Martin Preece, 54, who runs the company’s South Deep gold mine in South Africa, will take the role of interim CEO, while the board searches for a new boss.
“The Yamana setback should not be allowed to impede the company’s strategy,” Griffith said in an emailed statement. “As a CEO I felt that I should take responsibility and allow the company to move forward under new leadership unencumbered by the Yamana transaction.”
“We were all disappointed that the Yamana deal did not go through, as we felt it was a compelling deal which would have created a strong company and created value for all our shareholders,” chair Yunus Suleman noted.

Shares in Gold Fields, which operates nine mines across Australia, Peru, South Africa and West Africa, dropped a fifth on the day the bid was announced in May but bounced back by a similar percentage in November, when the deal was called off.
The Yamaha takeover would have created the world’s fourth-largest gold miner, surpassing Agnico Eagle.
Gold Fields currently has only one mine left in the home country — South Deep. Its portfolio includes three operations in Ghana, the Cerro Corona mine in Peru, and the Salares Norte project in Chile.
In defending the Yamana deal, Griffith had said that Gold Fields’ gold output was in decline and that the addition of fresh assets to lift production was crucial.
The Johannesburg-based miner has guided 2.3 million ounces of gold production for this year, increasing to 2.8 million in 2024. After that, output could fall to a low of 2.1 million per year by 2030 without a deal that enhances the company’s portfolio.
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Avancée majeure pour les batteries à semi-conducteurs pour qu’elles ne déclinent plus et se chargent en 5 min !
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Le Mauna Loa, à Hawaï, est toujours en éruption, mais pour combien de temps ?
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lundi 12 décembre 2022
BHP invests in Gates and Friedland-backed firm I-Rox
BHP (ASX: BHP) has joined billionaire Robert Friedland’s I-Pulse Inc. and Breakthrough Energy Ventures, a clean-tech venture backed by Bill Gates and Jeff Bezos, to speed up technologies that can help the mining sector save on energy.
I-Pulse and Breakthrough Energy Ventures (BEV)-Europe launched earlier this year a company named I-Rox, a France-based firm focused on demonstrating a pulsed-power technology said to reduce the amount of energy needed to crush rock.
The value of BHP’s equity investments in I-Pulse and I-Rox wasn’t disclosed, but the world’s largest miner will join I-Pulse and BEV Europe as shareholders of I-Rox, the firms said.
I-Rox uses high-voltage pulses of power to disintegrate rock, an approach that has been trialled in laboratories for years but has yet to be applied in commercial mining operations.
The agreements not only give BHP access to the new technology, but it also makes it an active partner in I-Pulse and BEV Europe’s quest to identify new applications for pulsed-power technology in a mining context.
Curbing emissions
Crushing and grinding mined rock into small particles to extract valuable metals and minerals consumes more than 4% of the world’s electricity and are a major source of miners’ direct emissions.
“BHP’s investment and our collaboration offer a meaningful step forward in the development and commercialization of I-Pulse technologies for the mining industry,” Friedland, chairman of I-Pulse said in the statement. “Particularly in relation to the prospect of the crushing and grinding of rocks for a fraction of today’s energy consumption, environmental impact and costs.”
I-Pulse has developed several applications of its pulsed-power technology, including solutions for geological exploration, finding water and manufacturing.
BHP chief executive Mike Henry said the collaboration with I-Pulse and I-Rox will contribute to the company’s growing portfolio of options with potential to both improve competitiveness of and help decarbonize its operations.
The Melbourne, Australia-based mining giant also has a 5.5% stake in Ivanhoe Electric (NYSE, TSE: IE), another Friedland-founded miner with copper projects in Arizona, Utah and Montana, along with a battery storage business.
Before listing in New York in June this year, Ivanhoe Electric was a unit of I-Pulse.
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Et voici le premier tracteur autonome et électrique !
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Vers le mois de décembre le plus froid depuis 10 ans ?
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Derniers jours pour précommander le Mag' Futura !
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Artemis I : la capsule Orion est rentrée sur Terre indemne et ouvre la voie aux vols habités lunaires
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Les petits astéroïdes sont étonnamment jeunes !
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dimanche 11 décembre 2022
Quels sont les pays devenus leaders dans les énergies renouvelables ?
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Gold objects found in Troy were mass-produced, travelled great distances
An international team of archaeologists recently discovered that gold in objects from Troy, Poliochni – a settlement on the island of Lemnos which lies roughly 60 kilometres away from Troy -, and Ur in Mesopotamia have the same geographic origin and were traded over great distances.
In a paper published in the Journal of Archaeological Science, the researchers explain that their findings are the result of using an innovative mobile laser method to analyze samples of the famous Early Bronze Age jewelry from Troy and Poliochni.
According to the group, ever since Heinrich Schliemann discovered Priam’s Treasure in Troy in 1873, the origin of the gold has been a mystery. Thanks to their new approach, however, it was possible to prove that it derived from what is known as secondary deposits such as rivers and that the gold’s chemical composition is not only identical to that of objects from the settlement of Poliochni on Lemnos and from the royal tombs in Ur in Mesopotamia, but also to that of objects from Georgia.
“This means there must have been trade links between these far-flung regions,” Ernst Pernicka, director of the University of Tübingen’s Troy project, said in a media statement.
The new method
The technique employed by Pernicka and his team is called ‘portable laser ablation system’ (pLA), which enabled them to undertake minimally invasive extraction of samples from jewelry in the National Archaeological Museum in Athens. The necklaces, pendants, earrings and chokers in the museum are so precious that it is not permitted to transport them to a laboratory or to undertake any examination that leaves a visible mark on the objects.
All previously available methods failed because of at least one of these constraints. By contrast, the portable laser device can be taken to the site and it melts such a small hole in the items that it cannot be seen with the naked eye.
Once the fragments were removed, Pernicka and his group investigated their composition using mass spectrometry.
Gold dust
As well as gold, historic pieces of jewelry always contain other elements such as silver, copper, zinc, palladium and platinum. Depending on the alloy, scientists can create a distinct chemical profile for the finds and use this to draw conclusions. For instance, the high concentrations of zinc, palladium and platinum in the jewelry from Troy are a clear sign that the gold used to create the pieces was washed out of a river in the form of gold dust.
The researchers were also able to show that the jewelry was mass-produced in workshops and not just as individual items. This is the only reasonable explanation, for example, for the identical amount of platinum and palladium being present in the gold disks in necklaces of the same design that were found at different sites.
In total, the team studied 61 artifacts, all originating from the Early Bronze Age between 2,500 and 2,000 BCE. This is also the period of the famous Priam’s Treasure, which Schliemann wrongly attributed to the mythical king of Troy from the Iliad.
Experts have long debated the origin of the gold from the royal tombs of Ur as well. There are no natural sources of gold in Mesopotamia so West Anatolia, which was also the site of Troy, was believed to be a possible source. “However, other quite different regions which are known to have had strong trade links with Ur, have also been considered,” Pernicka said.
Comparative archaeological studies have shown from strikingly similar items that these were used in the Early Bronze Age across a large geographic area, stretching from the Aegean to the Indus valley in what is now Pakistan: official seals and standardized weights, earrings with the same spiral patterns, gemstones such as lapis lazuli or the shimmering carnelian.
“The new archaeometric data open up a sound and global framework for our models of societies, their networks and the significance of resources around 4500 years ago,” Barbara Horejs, director of the Austrian Archaeological Institute, pointed out.
Despite the good news, the precise origin of the gold of Troy could not be determined once and for all by the researchers.
“If we observe the share of trace elements in the gold from Troy, Poliochni and Ur, Bronze Age gold from Georgia correlates the closest with the stated find sites. But we still lack data and studies from other regions and from other objects to establish this assumption,” Pernicka said.
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