willemite

(wilə mīt′)

noun

a hard, rhombohedral mineral, ZnSiO, an ore of zinc; zinc silicate

Origin: Du willemit, after Willem I (1772-1843), king of the Netherlands

See willemite in American Heritage Dictionary 4

noun
A colorless, vitreous to resinous, often fluorescent mineral, Zn2SiO4, a minor ore of zinc.

Origin:

Origin: Dutch willemit

Origin: , after Willem I (1772-1843), king of the Netherlands

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