Surface mining, method of extracting minerals near the surface of the Earth. The three most…

Hematite, also spelled haematite, heavy and relatively hard oxide mineral, ferric oxide (Fe2O3), that constitutes the most important iron ore because…

Beneficiation, removal of worthless particles from pulverized metal ore. Ores Iron ores occur in igneous, metamorphic…

Mineral processing, art of treating crude ores and mineral products in order to separate the valuable minerals…