Stilpnomelane is a phyllosilicate mineral. It has the formula K(Fe2+,Mg,Fe3+)8(Si,Al)12(O,OH)27·n(H2O). Stilpnomelane occurs associated with banded iron formations. It is a metamorphic mineral associated with the blueschist and greenschist facies. It was first described in 1827 for an occurrence in Moravia in the Czech Republic. The name is deriv...
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http://en.wikipedia.org/wiki/Stilpnomelane
• (n.) A black or greenish black mineral occurring in foliated flates, also in velvety bronze-colored incrustations. It is a hydrous silicate of iron and alumina.
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http://thinkexist.com/dictionary/meaning/stilpnomelane/
Stilp·nom'e·lane noun [ Greek
stilpno`s shining +
me`las ,
-anos , black.]
(Min.) A black or greenish black mineral occurring in foliated flates, also in velvety bronze-colored incrustations. It is a hydrous silicate of iron and alumina.
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http://www.encyclo.co.uk/webster/S/198
Stilpnomelane is a mineral forming dark coatings in schist and may also be found in iron ore deposits, commonly associated with epidote and mica. Stilpnomelane was confirmed as a distinct species of mineral in 1827 but since then debate has raged as to whether it is a simple mineral or a mixture of closely related species. Stilpnomelane is a hydrou...
Found on
http://www.probertencyclopaedia.com/browse/HS.HTM
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