vesuvianite

(-ə nīt′)

noun

a usually green or brown, hard, tetragonal mineral, CaMgAl(SiO)(SiO)(OH), usually found in metamorphic limestone; hydrous calcium magnesium aluminum silicate

Origin: < Vesuvian + -ite

See vesuvianite in American Heritage Dictionary 4

noun
A green, brown, yellow, or blue metamorphic silicate mineral, Ca10Mg2Al4(SiO4)5(Si2O7)2(OH)4. Also called idocrase.

Origin:

Origin: First found in old lava on Mount Vesuvius

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