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Chapter 4 Vocab Words-Earth Space

Word bank: gems, ore, silicates, tetrahedron, specificgravity, streak, fracture, cleavage, hardness, luster, crystal, mineral
Across
Way that a mineral reflects light from its surface
Valuable minerals that are prized for their rarity and beauty
The ratio of mass of a substance to the mass of an equal volume of water at 4 degrees Celcius
The color of a mineral when it is broken up and powdered
Minerals that break with rough or jagged edges
Down
Measure of how easily a mineral can be scratched
Geometric solid having four sides that are equilateral triangles resembling a pyramid
Contains a valuable substance that can be mined at profit
Naturally occurring, inorganic solid with a specific chemical composition and definite crystalline structure
Solid in which the atoms are arranged in repeating patterns
Minerals that contain silicon and oxygen and usually one or more additional elements
Mineral that splits relatively easily and evenly along one or more flat planes