copper mica

例句：

1. 1. This mineral is used in the production of electrical conductors and insulators.
   这种矿物用于生产导电体和绝缘体。
2. 2. Copper mica is a common mineral found in many areas around the world.
   铜云母是一种在世界许多地区常见的矿物。
3. 3. The copper mica mine is located in the mountains, providing a unique natural landscape.
   铜云母矿位于山区，提供了一种独特的自然景观。