hastingsite

noun

has·​tings·​ite

ˈhāstiŋˌzīt

plural -s

: a sodium-calcium-iron amphibole ideally NaCa₂Fe₅Al₂Si₆O₂₂(OH)₂ but generally containing a little potassium and magnesium

Word History

Etymology

Hastings county, Ontario, Canada, its locality + English -ite

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