roscoelite
noun
ros·coe·lite
\ˈrä(ˌ)skōˌlīt\
Definition of roscoelite
-s
: a mineral approximately K2(Mg,Fe,V,Al)4(Si,Al)8O20(OH)4 consisting of a brownish mica in minute scales that contains vanadium
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Origin and Etymology of roscoelite
Sir Henry E. Roscoe †1915 English chemist + English -lite
First Known Use: 1876
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