iolite

例句：

1. 1.Iolite is a mineral that occurs naturally in the earth's crust.
   碘化锂是一种自然存在于地球地壳中的矿物。
2. 2.The iolite crystals are used in electronic devices for their unique properties.
   碘化锂晶体因其独特的性质被用于电子器件中。
3. 3. The iolite mine is located in a remote area, and it's not easy to access.
   碘化锂矿位于偏远地区，不易到达。