Maj. Gen. Martin Gama Abucha, Technical and Business Management professional with 15+ years of experience in Consulting, Business Administration, Project...
Talc is a rock known as steatite or soapstone, which is composed of varying proportions of the mineral talc, often...
Lead is chiefly obtained from the mineral galena (lead sulfide). Other common lead-bearing minerals include anglesite (lead sulfate), boulangerite, cerussite,...
n is a chemical element with the symbol Sn (from Latin: stannum) and atomic number 50. ... Tin is a...
The chief ores of iron consist mainly of the oxides: hematite, Fe2O3 ; goethite, alpha -FeO(OH); magnetite, Fe3O4; and the...
Diamond mineralDiamond, a mineral composed of pure carbon. It is the hardest naturally occurring substance known; it is also the...
Limestone, sedimentary rock composed mainly of calcium carbonate (CaCO3), usually in the form of calcite or aragonite. ... It may...
Mica is a mineral name given to a group of minerals that are physically and chemically similar. They are all...
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