This work studies the potential release of Cr from solids to surface water and groundwater, related isotopic compositions, in a nickel laterite ore deposit Barro Alto Brazil (in State Goiás). ultramafic system is characterized by elevated concentrations chromium (Cr). Even largely immobile may be naturally leached weathering profiles such as groundwater. exploited for metal production, both min...

The growing demand for nickel metal and the depletion of high-grade sulfide ore reserves have turned direction industry towards laterites which are not desirable as primary source due to their low Ni content more energy-intensive processing. Thus, alternative routes essential effectively processing these ores while reducing costs greenhouse gas emissions. Solid-state reduction followed by magne...

Mine geologists use the term “garnierite” for the green Ni-rich silicate minerals that occur in many Ni-laterite deposits. However, garnierite is not a mineral species recognized by the Commission on New Mineral and Mineral Names (CNMMN). Actually, garnierite is a general name for the NiMg hydrosilicates that usually occur as an intimate mixture that commonly includes two or more of the followi...