graftonite

noun

graf·​ton·​ite

ˈgraftəˌnīt

plural -s

: a mineral (Fe,Mn,Ca)₃(PO₄)₂ consisting of an iron manganese calcium phosphate occurring in salmon-pink laminated intergrowths with triphylite (hardness 5, specific gravity 3.7)

Word History

Etymology

Grafton, New Hampshire + English -ite

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