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What is a Mineral?
A mineral is inorganic.
Minerals are naturally occurring.
Minerals are solids.
Minerals have a crystal structure.
Minerals have a definite chemical composition.
How do we Identify Minerals?
Color
Streak- the color of its powder.
Luster- how it reflects light.
Density- mass/ volume
Hardness- Mohs hardness scale- ranks 10 minerals from softest to hardest. Hardness is determined by a scratch test.
Crystal structure
Cleavage and fracture- the way a mineral breaks apart.