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Chap.3

Minerals

QuestionAnswer
mineral naturally occuring,inorganic solid with a definite chemical compositionand an orderly arrangement of atoms
crystal a solid in which the atoms are arranged in orderly, repeating patterns
magma hot melted rock
silicates minerals that contain silocon and oxygen and usually one or more other elements
hardness how eaisly a mineral can be scratched
luster the way a mineral reflects light
specific gravity ratio of a minerals weight compared weight of an equal volume of water
streak the color of a mineral in its powdered form
cleavage minerals that break along flat smooth surfaces
fracture minerals that break along rough jagged surfaces
gem highly prized minerals because they are rare and beautiful
Created by: STEPHEN!
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