Stilpnomelane
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A black or greenish black mineral occurring in foliated flates,also in velvety bronze-colored incrustations. It is a hydroussilicate of iron and alumina.
Stilpnomelane meaning & definition 1 of Stilpnomelane.
A black or greenish black mineral occurring in foliated flates,also in velvety bronze-colored incrustations. It is a hydroussilicate of iron and alumina.