A glassy pink,green,violet,or blue aluminum borosilicate mineral,Al8BSi3O19OH,used in spark - plug ceramics and as imitation lapis lazuli.

 
  • 蓝线石一种玻璃状的粉,绿,紫或蓝色硼硅铝酸盐矿物,组成为Al8BSi3O19OH,用于火花塞制陶及用作仿天青石
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