arfvedsonite

noun

arf·ved·son·ite | \ ˈävə̇dsəˌnīt \

plural -s

Definition of arfvedsonite

: a silicate of sodium, calcium, and iron, approximately Na_2–3(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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“Arfvedsonite.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/arfvedsonite. Accessed 9 Mar. 2021.

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