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dypingite

n. (context mineral English) A monoclinic white mineral containing carbon, hydrogen, magnesium, and oxygen.

Wikipedia
Dypingite

Dypingite is a hydrated magnesium carbonate mineral with the formula: Mg(CO)(OH)ยท5HO. Its type locality is the Dypingdal serpentine- magnesite deposit, Snarum, Norway.