Minerals

Front

Mineral containing silicon, oxygen, and usually one or more other elements

Back

silicate

Front

A valuable, rare mineral

Back

gem

Front

A naturally occurring, inorganic solid

Back

mineral

Front

How light is reflected off a mineral?

Back

luster

Front

Measure of how easily a mineral can be scratched

Back

hardness

Front

Mineral mined at a profit

Back

ore

Front

Characteristic observed without changing the identity of the material

Back

physical property

Front

Breakage along smooth, flat planes

Back

cleavage

Front

The color of a mineral's powder

Back

streak

Front

Breakage along rough or jagged edges

Back

fracture