shackanite

例句：

1. 1.The shackanite is a rare mineral that has been found in the Earth's crust for millions of years.
   石炭石是一种稀有矿物，已在地球地壳中被发现数百万年。
2. 2. Shackanite is used in the production of carbon fiber, which is used in the construction of aircraft and cars.
   石炭石用于生产碳纤维，这种材料被用于飞机和汽车的制造。
3. 3. The shackanite mine is located in the Appalachian Mountains, where it was discovered by a team ofgeologists.
   石炭石矿位于阿巴拉契亚山脉，由一支地质学家团队发现。