A specific crystalline form of a compound that can crystallize in different forms.
多晶形（物）一种能以不同形式结晶的化合物的特殊晶形
A green radioactive mineral that is a hydrous crystalline phosphate of uranium and copper.
铜铀云母一种绿色的放射性矿物，为铀和铜的氢化结晶云母
A mineral, especially a transparent form of quartz, having a crystalline structure, often characterized by external planar faces.
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
