harstigite

noun

hars·​tig·​ite

ˈhärstəˌgīt

plural -s

: a mineral Be₂Ca₃Si₃O₁₁ consisting of a silicate of beryllium and calcium (hardness 5.5, specific gravity 3.05)

Word History

Etymology

Swedish harstigit, from Harstig mine, Sweden + Swedish -it -ite

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