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Chapter 4

TermDefinition
Mineral naturally occurring, inorganic solid with a specific chemical composition and definite crystalline structure.
Crystal solid in which atoms are arranged in a repeating pattern.
luster the way that a mineral reflects light from its surface; two types- metallic and nonmetallic
hardness measure of how easy a mineral can be scratched, which is determined by the arrangement of a mineral's atoms.
cleavage the manner in which a mineral breaks along planes where atomic bonding is weak.
fracture when a mineral breaks into pieces with arc like, rough, or jagged edges.
streak color a mineral leaves when it is rubbed across an unglazed porcelain plate or when it is broken up and powdered.
specific gravity ratio of the mass of a substance to the mass of an equal volume of H2O at 4C.
silicate mineral that contains silicon (Si), oxygen (O), and usually one or more other elements.
tetrahedron a geometric solid having four sides that are equilateral triangles
ore mineral that contains a valuable substance that can be mined at a profit.
gem rare, precious, highly prized mineral that can be cut,polished, and used for jewelry.
Created by: kindredmcdaniel
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