VIVIANITE

Etymology

Named after its discoverer English mineralogist J. G. Vivian in 1817.

Noun

vivianite (countable and uncountable, plural vivianites)

(mineral) A blue, green or colourless mineral of monoclinic crystals, Fe₃(PO₄)₂·8H₂O.

Source: Wiktionary

Viv"i*an*ite, n. Etym: [So called by Werner after the English mineralogist F. G. Vivian.] (Min.)

Definition: A hydrous phosphate of iron of a blue to green color, growing darker on exposure. It occurs in monoclinic crystals, also fibrous, massive, and earthy.

Source: Webster’s Unabridged Dictionary 1913 Edition

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