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ES Vocab 9/19/14


mineral a naturally occurring, inorganic solid, with a specific chemical composition and a definite crystalline structure
crystal a solid in which the atoms are arranged in repeating patterns
luster the way that a mineral reflects light from its surface
hardness a measure of how easily a mineral can be scratched
cleavage a mineral that splits relatively easily evenly along one or more flat planes
fracture when a minerals breaks with jagged or uneven edges
streak the colour of a mineral when it is broken up and powdered
streak the colour of a mineral when it is broken up and powdered
specific gravity the ratio of the mass mass of a substance to the mass of an equal volume of water at 4 degrees celcius
Created by: sarajohnson