roscoelite

noun

ros·​coe·​lite

ˈrä(ˌ)skōˌlīt

plural -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

Word History

Etymology

Sir Henry E. Roscoe †1915 English chemist + English -lite

First Known Use

1876, in the meaning defined above

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