There are two main ways that minerals are classified. which identifies those two main ways?

a. country of origin and chemical makeup

b. chemical makeup and use

c. crystal structure and economic value

d. use and economic value

A mineral is a naturally occurring inorganic crystalline solid that are the building blocks of rocks. Rocks are made up of different minerals. The most appropriate answer is c. crystal structure and economic value. Some minerals are classified as semiprecious or precious because of their economic value.  Minerals such as diamonds and emeralds are precious and are very valuable.