What is the main difference between minerals and rocks?

A mineral is a naturally occurring inorganic element or compound having an orderly internal structure and characteristic chemical composition, crystal form, and physical properties.A rock is an aggregate of one or more minerals, or a body of undifferentiated mineral matter. read more

Geologists differentiate between rocks and minerals based on these differences and also based on rock- or mineral-specific tests. Geologists rely on five tests to identify a mineral: color, shape, hardness, streak and luster. read more

Main rocks on earth contain minerals like magnetite, quartz, feldspar, mica, epidote etc. But more than half of the mineral types classified in geological studies are considered rare. Igneous rocks are formed when molten lava solidifies after a volcanic eruption and is known to be rich in the mineral granite. read more