Earth Science CH. 4
Terms
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- Crystal
- is a solid in which the atoms are arranged in repeating patterns
- Magma
- molten material found beneath Earth's surface
- Mineral
- is a naturally occurring,inorganic with a specific chemical composition and a definite crystalline structure
- Silicate
- minerals that contain silicon and oxygen and usually one or more other elements
- Cleavage
- A mineral that breaks easily and evenly along one or more planes
- Fracture
- minerals that break with rough or jagged edges
- Gem
- are valuable minerals that are prized for their rarity and beauty
- hardness
- is a measure of how easily a mineral can be scratched.
- Luster
- the way that mineral reflects light from its surface
- ore
- a mineral that can be mined for a profit.
- specific gravity
- the ratio of the weight of a substance to the weight of an equal volume of water at 4 degrees Celsius
- Streak
- is the color of a mineral when it is broken up and powdered.