Zinc, magnesium and manganese commonly substitute for the iron resulting in the siderite-smithsonite, siderite-magnesite and siderite-rhodochrosite solid solution series.
en.wikipedia.org It is involved in the exploration of iron ore, copper, rock phosphate, limestone, dolomite, gypsum, bentonite, magnesite, diamond, tin, tungsten, graphite etc.
en.wikipedia.org The resulting products are magnesite and silica which could be commercialized.
en.wikipedia.org Since much of the lost capacity was for carbon-magnesite brick, graphite consumption within refractories area moved towards alumina-graphite shapes and monolithics, and away from the brick.
en.wikipedia.org Other minerals mined in the state include copper, lead, silver, zinc, bauxite, gold, phosphate rock, magnesite and silica sand.
en.wikipedia.org