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Chapter 3 Vocab Mrs. Birdsong

Mineral A naturally occurring, inorganic solid with a define chemical composition and an orderly arrangement of atoms.
Crystal A solid in which the atoms are arranged in orderly, repeating patterns.
Magma Hot melted rock material.
Silicates Minerals that contain silicon and oxygen.
Hardness A measure of how easily a mineral can be scratched.
Luster The way light reflects off of a mineral.
Specific Gravity The ratio of a minerals weight compared to water.
Streak The color of a mineral in powdered form.
Cleavage Minerals that break with smooth flat surfaces Example: Mica.
Fracture Minerals that break with jagged, rough, and uneven surfaces.
Gems Or gemstones are highly prized minerals for their beauty and because they are rare.
Ore A useful substance that can be mined at a profit.
Created by: nmchapar