trigonite

例句：

1. 1.The mineral is used in the production of glass and ceramics.
   这种矿物用于生产玻璃和陶瓷。
2. 2.Trigonite is a common mineral found in many rocks.
   正长石是一种常见的矿物，存在于许多岩石中。
3. 3.The crystal structure of trigonite is unique and has been studied extensively.
   正长石的晶体结构独特，已被广泛研究。