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arfvedsonite

noun arf·ved·son·ite \ ˈävə̇dsəˌnīt \
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Definition of arfvedsonite

plural -s
: a silicate of sodium, calcium, and iron, approximately Na2–3(Fe, Mg, Al)5Si8O22(OH)2, of the amphibole group occurring in black monoclinic strongly pleochroic prisms in certain igneous rocks

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Origin and Etymology of arfvedsonite

J. A. Arfvedson †1841 Swedish chemist + English -ite

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