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Earth Material ellen

QuestionAnswer
mineral a naturally occuring, inorganic solid with a definate chemical composition
crystal a solid in which the atoms are arranged in orderly, repeating patterns
magma hot melted rock material
silicate minerals that contain silicon and oxygen and usually one or more elements
hardness the measure of how easily a mineral can be scratched
luster the way minerals reflect light
streak the color of a mineral when it's in powdered form
cleavage minerals that break along smooth flat surfaces have cleavage
fracture minerals that break with uneven rough or jagged surfaces have fracture
gem highly prized minerals that are rare and beautiful
ore a mineral or rock that contains a useful substance that can be mined at a profit
Created by: emschmitz.clm
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