angaralite

noun

an·​gar·​a·​lite

anˈgarəˌlīt

plural -s

: a mineral Mg₂(Al, Fe)₁₀Si₆O₂₉ consisting of a magnesium aluminum iron silicate and occurring in thin black plates (specific gravity 5.6)

Word History

Etymology

German angaralith, from Angara river, U.S.S.R., its locality + German -lith -lite

First Known Use

1899, in the meaning defined above

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