Hardystonite

Ca2ZNSi2O7

This sample of hardystonite is displayed in the Smithsonian Museum of Natural History. Hardystonite is a silicate mineral of zinc with the composition Ca2ZnSi2O7. The sample at left is about 15 cm across and is from Franklin, New Jersey. It is described as hardystonite with franklinite and calcite.

Mindat: Hardystonite

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