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Are the building blocks of rocks and an essential part of Earth's crust.
Minerals
What are the Characteristics of Minerals?
Naturally occuring, inorganic, homogenous solid, definite chemical composition, ordered crystal structure
The visible appearance of a mineral.
Color
The color of a mineral's powdered form when rubbed on a streak plate.
Streak
How a mineral reflects light
Luster
Resistance to scratching, measured by the Mohs scale (1-10)
Hardness
Tendency to break along definite smooth planes. Fracture: breaks irregularly (Quartz)
Cleavage
Ratio of a mineral's weight compared to water.
Density
The shape and size of a mineral naturally grows into.
Crystal form