mineral|minerals

牛奶是钙这种矿物质的重要来源。

Milk is an important source of the ___mineral calcium.

这块岩石含有多种矿物质，包括铁和石英。

This rock contains various ___minerals, including iron and quartz.

这个地区的矿藏丰富，盛产铁矿石和其他有价值的矿物质。

This region is rich in ___minerals, producing iron ore and other valuable resources.