friedelite

noun

frie·​del·​ite

-ˌlīt

plural -s

: a mineral Mn₈Si₆O₁₈(OH, Cl)₄·3H₂O consisting of a rose-red manganese silicate containing chlorine (hardness 4–5, specific gravity 3.07)

Word History

Etymology

French, from Charles Friedel + French -ite

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