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stilpnomelane : ウィキペディア英語版 | stilpnomelane
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 derived from the Greek ''stilpnos'' for shining, and ''melanos'' for black.〔 ==References==
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