Chemical composition of marine manganese nodules from the Pacific Ocean

Manganese nodules were selected from various potential mining sites of the Pacific ocean. They were dried by heating at 1000°C until total evaporation and ground to powder...本研究所用锰结核（Manganese nodules）采自太平洋多处潜在采矿区域。将其置于1000℃环境下加热烘干至水分完全蒸发后，研磨为粉末状……