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WILLEMITE

Miscellaneous

Family: None
Region: None
Mined At: Unspecified
Raw Mineral: Yes
Generic: No

Notes

(Richard Willis)

Mineral, ideal form of Zn₂SiO₄ and typical analysis of ZnO 72.98%, SiO₂ 27.04%
Hardness: 5.5 Density: 4.0 Soluble in HCl
Popular way to add both zinc and silicon to glaze recipes for augmenting opacity. A minor zinc ore, often containing significant traces of manganese.