Front

Describes shiny, pearly, or metallic appearance

Back

Luster

Front

Most abundant mineral group

Back

Silicates

Front

Fizzes with HCl, releasing CO2

Back

Carbonates

Front

Mineral quality recorded as a number indicating scratchability.

Back

Hardness

Front

Often mined for metal ores

Back

Oxides

Front

Scale ranking mineral hardness.

Back

Moh's Scale

Front

Breaks jagged or curved

Back

Fracture

Front

Breaks with flat sides

Back

Cleavage

Front

A mineral cut and polished to be valuable.

Back

gem