Cientistas criam mapa global de depósitos de terras raras

26 de maio de 2026

Reportado por IA

Pesquisadores desenvolveram um mapa mundial que destaca onde é provável encontrar elementos de terras raras. O trabalho associa esses metais valiosos a características geológicas específicas nas profundezas da superfície terrestre.

Uma equipe internacional liderada pela Universidade de Cambridge produziu um mapa preditivo para depósitos de terras raras. O estudo combina dados de aproximadamente 9.000 amostras de rochas com imagens sísmicas do interior do planeta. O resultado mostra que as rochas ígneas relevantes se formam principalmente ao longo das bordas íngremes da litosfera continental mais espessa e antiga da Terra.

USGS estimates Appalachian lithium resources could offset U.S. imports for more than three centuries

11 de maio de 2026 Reportado por IA Imagem gerada por IA Verificado

The U.S. Geological Survey says the Appalachian region contains an estimated 2.3 million metric tons of undiscovered, economically recoverable lithium—an amount it calculates could replace about 328 years of U.S. lithium imports at 2024 levels.

China maps seabed resources as Japan races for rare earths

China's Ministry of Natural Resources has published an atlas from two decades of marine geological surveys, mapping the location, concentration, and distribution of dozens of elements in seabed sediments, including rare earths, iron, manganese, and copper. State broadcaster CCTV reported the atlas as a 'master navigation map' for marine development and conservation, based on over 20,000 observation points. Researcher Dou Yanguang from the Qingdao Institute of Marine Geology said it enables precise targeting of resources and identification of sensitive ecological zones.

Japan confirms massive rare earth deposit near Minamitorishima amid seabed mining push

17 de abril de 2026 Reportado por IA

Japan has identified an enormous underwater rare earth deposit 6,000 meters deep near Minamitorishima, the remote Pacific atoll central to its accelerated deep-sea mining plans. Detailed in a recent WIRED report, the find—building on equipment installation earlier this year—bolsters Tokyo's drive for independence from Chinese supplies of these critical manufacturing materials.

Tecnologia

U.S. discovers huge lithium reserves in Appalachia

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Scientists create cosmic clock from zircon crystals to study ancient landscapes

Ciência

Scientists map deep mantle deformation linked to ancient tectonic slabs

Brazil chamber approves regulatory framework for critical minerals

Brazil's Chamber of Deputies approved a bill on Wednesday that sets rules for the exploration of critical minerals and rare earths. The text includes R$ 5 billion in incentives and a council with veto power over foreign partnerships. The vote came on the eve of a meeting between Presidents Lula and Donald Trump.

Scientists reveal three discoveries in nuclear process creating gold

13 de março de 2026 Reportado por IA

Nuclear physicists at the University of Tennessee have made three key findings about the rapid neutron-capture process that forms heavy elements like gold in stellar events. Their research, conducted at CERN's ISOLDE facility, clarifies how unstable atomic nuclei decay. The results, published in Physical Review Letters, could refine models of element formation in the universe.

domingo, 07 de junho de 2026, 21:32h