NaCa4(Si27Al9) O72.30H2O
NaCa₄(Si₂₇Al₉)O₇₂·30H₂O
This sample of stilbite is displayed in the Smithsonian Museum of Natural History. Stilbite is a silicate mineral of sodium, calcium and aluminum. It has the composition NaCa4(Si27Al9)O72.30H2O. This sample is about 18 cm wide and is from Nasik, Maharashtra, India.
这种石英石样本陈列在史密森尼自然历史博物馆中。石英石是一种含钠、钙和铝的硅酸盐矿物。其化学式为 NaCa₄(Si₂₇Al₉)O₇₂·30H₂O。该样本宽约 18 厘米,来自印度马哈拉施特拉邦的纳西克。  The smaller sample is at the same scale.
较小的样本处于相同尺度 |