Ca2ZNSi2O7
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.
这种硬石英岩样品陈列在史密森尼自然历史博物馆中。硬石英岩是一种含锌的硅酸盐矿物,其化学式为Ca₂ZnSi₂O₇。左侧的样品宽约15厘米,来自新泽西州弗兰克林。该样品被描述为硬石英岩、弗兰克林矿和方解石的混合物。
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