troostite

(tro̵̅o̅′stīt′)

☆

noun

a hard, reddish, rhombohedral mineral, (Zn,Mn)SiO, with large crystals, similar to willemite but containing varying amounts of manganese

Origin: after G. Troost (1776-1850), Am mineralogist + -ite

See troostite in American Heritage Dictionary 4

noun

A white or colored crystalline mineral, a variety of willemite, in which the zinc is partly replaced by manganese.

Origin:

Origin: After Gerard Troost (1776-1850), Dutch-born American geologist

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