Crocoite is a mineral consisting of lead chromate and crystallizing in a monoclinic crystal system, and it is the only chromate of any importance found in nature.
2
水晶一种具有晶体结构的矿石，尤指石英的一种透明形态，通常其晶面在同一平面上。
A mineral, especially a transparent form of quartz, having a crystalline structure, often characterized by external planar faces.
点击反馈