Minerals

Front

What is a mineral?

Back

A naturally occurring, inorganic solid with a definite chemical composition and a crystalline structure.

Front

Why is coal not considered a mineral?

Back

Because it is not inorganic; it is made from organic materials.

Front

What is luster in relation to minerals?

Back

Luster is the way light reflects off the surface of a mineral.

Front

What do we call a valuable, rare mineral?

Back

A gem.

Front

What is a crystal?

Back

A solid, geometric form of a mineral produced by a repeating pattern of atoms.

Front

What mineral is commonly used in pencils?

Back

Graphite.

Front

What is the difference between a rock and a mineral?

Back

A mineral is a single substance, while a rock is a combination of one or more minerals.

Front

What is the term for the color of a mineral's powder?

Back

Streak.

Front

What is cleavage in minerals?

Back

Cleavage is the tendency of a mineral to break along flat surfaces.

Front

What is the term for how heavy a mineral is for its size?

Back

Density.