source:natureAbstractThe world’s largest current Cu resource is volcanic arc-hosted, porphyry copper deposits. Whether unusual parental magmas or fortuitous combinations of processes accompanying emplacement of common parental arc magmas (e.g., basalt) is required for ore deposit formation, remains unclear. Spatial and tectonic associations of adakite (andesite with high La/Yb, Sr/Y) with porphyries exist, but genetic links are debated. Delayed saturation with Cu-bearing sulfides consequent to elevated redox state seems essential for late-stage exsolution of Cu-bearing hydrothermal fluids. Par...
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source:designnewsRare earth elements (REEs) are a group of 17 metallic elements that are used in high-tech electronics, electric vehicle motors, defense systems, and other consumer goods, according to NETL. REEs can be extracted from coal waste by-products, but a very common element—aluminum—can interfere with such extraction. NETL researchers have developed a scalable method to detect aluminum using sensors. The solution could help inspire innovators to develop reliable domestic REE supplies. Because the concentration of aluminum is often significantly higher than that of REEs in coal wa...
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2023
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source:techxploreRare earth elements (REE), a group of 17 metallic elements, are in nearly every piece of technology, including cell phones, televisions, computers and almost every part of a vehicle. The demand for these elements increases annually, however the supply is limited geopolitically and is mined with environmentally unsustainable practices.Young-Shin Jun, professor of energy, environmental & chemical engineering in the McKelvey School of Engineering at Washington University in St. Louis, and her team have created a proof-of-concept solution: extracting REEs from coal fly ash, a ...
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source:astrobiologyA new biosensor engineered by Penn State researchers offers scientists the first dynamic glimpses of manganese, an elusive metal ion that is essential for life.The researchers engineered the sensor from a natural protein called lanmodulin, which binds rare earth elements with high selectivity and was discovered 5 years ago by some of the Penn State researchers involved in the present study.They were able to genetically reprogram the protein to favor manganese over other common transition metals like iron and copper, which defies the trends observed with most transition metal...
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