There are two groups of minerals which are metallic and nonmetallic minerals. Metallic and nonmetallic have to do with a mineral’s luster.
Minerals such as galena, pyrite, magnetite, and hematite are examples of metallic minerals. Metallic minerals produce the largest amount of luster which makes them very shiny.
A nonmetallic mineral is not as reflective as a metallic mineral, but they can still be shiny. Some examples of nonmetallic minerals are talc, sulfur, and gypsum.
mandmminerals 