pyrorthite

例句：

1. 1. The mineral pyrorthite is often found in the earth's crust.
   矿物磷灰石通常存在于地壳中。
2. 2. Pyrorthite is a common mineral that can be found in many rocks.
   磷灰石是一种常见的矿物，可以在许多岩石中找到。
3. 3.The pyrorthite in this rock has been formed over millions of years.
   这种岩石中的磷灰石已经形成数百万年。