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Copper

All articles tagged with #copper

US backs Congo cobalt-copper mines to counter China's rare-earth edge
world18 days ago

US backs Congo cobalt-copper mines to counter China's rare-earth edge

The U.S. backs Virtus Minerals to develop Chemaf’s Étoile and Mutoshi cobalt and copper mines in the Democratic Republic of the Congo—the first U.S.-owned operator there in over a decade—aiming for about 75,000 tonnes of copper and 20,000 tonnes of cobalt a year, exported via the Lobito Corridor to Angola with a $5 billion rail investment; officials call it a flagship investment to diversify critical mineral supply chains and counter China’s dominance in Africa.

via Fox News|
#cobalt#copper#drc
Pyrenees cave reveals 4,000 years of copper work at extreme altitude
archaeology1 month ago

Pyrenees cave reveals 4,000 years of copper work at extreme altitude

In a high-altitude Pyrenees cave (2,235 m) called Cova 338, archaeologists found 23 fire pits, malachite fragments, pottery, bones, and ornaments—plus remains of a child—showing repeated, organized visits over more than 4,000 years (from the late Neolithic to the Bronze Age). The site appears to have been used to heat and process copper-bearing rock, not necessarily smelted there, indicating sophisticated resource extraction and knowledge transfer in an otherwise remote location. Future work aims to confirm ore sources and the full metallurgical sequence.

via Space Daily|
#archaeology#copper#high-altitude
Trump Modifies 232 Tariffs on Aluminum, Steel, Copper with Expanded Derivative Rules
economy1 month ago

Trump Modifies 232 Tariffs on Aluminum, Steel, Copper with Expanded Derivative Rules

President Trump issues a new proclamation altering the Section 232 tariff regime for aluminum, steel, and copper imports, effective June 8, 2026. The changes expand derivative coverage (including agricultural equipment and certain residential HVAC components) and adjust tariffs: 25% on listed metal products, 10% on derivative articles that are entirely US-made in metal content, and a temporary 15% reduced rate for selected derivative products; aluminum lithographic plates and steel racks are now covered derivatives; the threshold for “made entirely from American” drops from 95% to 85%. For Canada and Mexico under USMCA, 25% applies only to non-U.S. content with a floor of 15%. Beginning 2028, rates will align with Proclamation 11021. The Secretary of Commerce and other agencies will monitor and adjust as needed to address national security concerns and ensure implementation across HTSUS changes.

via The White House (.gov)|
#aluminum#copper#economy
Green Rocks Reveal Ancient Copper Mining in a High-Altitude Pyrenees Cave
science2 months ago

Green Rocks Reveal Ancient Copper Mining in a High-Altitude Pyrenees Cave

Archaeologists excavating Cave 338 in the Pyrenees uncovered burnt green malachite fragments, hearths, jewelry, and human remains dating roughly 5,500 to 4,000 years ago, suggesting prehistoric people intermittently used the high-altitude cave to process copper rather than merely passing through, challenging the idea that mountains were marginal for ancient economies.

via Gizmodo|
#archaeology#cave-338#copper
Green rocks in Pyrenees cave reveal Copper Age copper-smelting site
archaeology2 months ago

Green rocks in Pyrenees cave reveal Copper Age copper-smelting site

Archaeologists excavating a high-altitude cave in Girona, Spain (2,235 m/7,333 ft) uncovered nearly 200 malachite fragments, charcoal-rich pits, and other artifacts suggesting prehistoric people repeatedly processed green copper ore to extract copper, constituting a Copper Age copper-smelting camp active for more than 4,000 years, with intensive use between 3600–2400 BCE. The finds—human remains, animal bones, pottery, and cultural ornaments—indicate long-term occupation and resource exploitation in the Pyrenees, and researchers plan to confirm the malachite identification and continue excavations to understand the site’s purpose.

via Live Science|
#archaeology#copper#copper-age
Doped nanotube fibers push toward copper-like wiring performance.
science2 months ago

Doped nanotube fibers push toward copper-like wiring performance.

Researchers doped bulk double-walled carbon nanotube fibers with tetrachloroaluminate (AlCl4−), boosting mean conductivity about 10x on average (up to 15x in the best fibers) and reaching roughly 70% of aluminum’s conductivity; when normalized by density, the doped fibers can outperform copper, suggesting potential for lightweight, high-capacity wiring. However, the dopant is air-sensitive and short-lived (weeks) unless the fibers are polymer-coated, posing stability and scalability challenges even as the approach identifies a promising dopant strategy.

via Ars Technica|
#carbon-nanotubes#conductivity#copper
Green Relic Hand: Copper Coin Preserves 150-Year-Old Hungarian Infant
archaeology2 months ago

Green Relic Hand: Copper Coin Preserves 150-Year-Old Hungarian Infant

Archaeologists in southern Hungary uncovered a 150-year-old infant hand preserved as a green mummy after a grieving mother reportedly placed a 19th‑century Kreuzer copper coin in the child’s fist. High copper exposure caused an antimicrobial reaction that preserved soft tissue, with copper levels about 500 times typical. The ritual, likely intended to pay Saint John the Baptist for heavenly baptism for an unbaptized infant, also involved sealing the child in a pot and burying it secretly; researchers found two other similar, inexplicably preserved infant burials nearby. This represents a rare case of copper-driven natural mummification rather than a deliberate process.

via ZME Science|
#archaeology#copper#hungary
Real-Time Metal Signals Reveal How Alzheimer’s Proteins Clump—and How to Undo It
science4 months ago

Real-Time Metal Signals Reveal How Alzheimer’s Proteins Clump—and How to Undo It

OSU researchers captured real-time, second-by-second interactions that drive copper-associated amyloid-beta protein clumping in Alzheimer’s, showing that carefully targeted chelators can interrupt or reverse aggregation and providing a roadmap for more precise therapies, with future tests in cellular and preclinical models.

via SciTechDaily|
#alzheimers-disease#amyloid-beta#chelators
US uses financial firepower to tilt Africa's minerals away from China
world5 months ago

US uses financial firepower to tilt Africa's minerals away from China

The United States is leveraging offtake deals and state-backed funding to compete with China for Africa's critical minerals—targeting copper, cobalt and more in the DRC, Guinea and Zambia—aiming to steer output into U.S.-aligned value chains; while Congo's major assets remain Chinese-controlled and disputes persist, the push signals Washington's preference for financial tools over direct mining presence.

via Reuters|
#africa#copper#mining
Alaska's Pebble Mine Could Help Solve America's Copper Shortage
business5 months ago

Alaska's Pebble Mine Could Help Solve America's Copper Shortage

Copper prices are surging and demand is expected to outpace supply for the next decade. The Pebble Mine in Alaska sits on vast copper and gold deposits but has been blocked by an EPA veto since 2014, stalling what could be a key domestic source for AI-driven infrastructure. Projections from S&P Global warn of a roughly 10 million metric ton copper shortfall by 2040 unless new mines come online, reviving calls to reevaluate permitting and push for domestic production amid political and environmental opposition across administrations.

via Business Insider|
#alaska#business#copper
Geopolitics push metals to fresh all-time highs
markets5 months ago

Geopolitics push metals to fresh all-time highs

Gold, silver, copper and tin surged to new record highs as geopolitical tensions and concerns about Federal Reserve independence spurred risk-off buying. Gold rose to as high as $4,641 per troy ounce, silver topped $90 per ounce, copper hit about $13,407 per tonne, tin reached roughly $54,760 per tonne, and platinum climbed to about $2,478 per tonne. Analysts say the move is unusually synchronized across metals and largely driven by geopolitical fears and policy uncertainty, with investors watching for potential tariffs and Fed developments.

via Financial Times|
#copper#gold#markets
PSUs and CPU Coolers Poised for 6-10% Price Jump as Metal Costs Rise
technology6 months ago

PSUs and CPU Coolers Poised for 6-10% Price Jump as Metal Costs Rise

A Chinese manufacturer, Guangzhou Xinhongzheng Electronic Technology, signals that power supplies could rise about 6-10% and CPU coolers 6-8% due to higher costs for raw materials like copper, silver, and tin. The note advises buyers to stock up in January before promotions end in February, noting that ~90% of products are currently discounted and may soon sell at full price with higher markups. While the claim mentions potential for even larger hikes, there is no independent verification yet and the situation across the supply chain remains uncertain. Copper and silver demand, notably from data centers, underpins the broader price pressure on these PC components.

via TechPowerUp|
#copper#cpu-cooler#power-supply