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20 Cards in this Set

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  • Back
precious, rare, or valuable material
gem
having a uniform structure or composition
homogenous
formed from non-living materials
inorganic
solid, inorganic substance with a crystalline structure
mineral
mineral from which a valuable material is extracted
ore
5 conditions of minerals
must occur naturally, must be inorganic, crystal structure, solid, must be homogenous
blocks or cubes
isometric
four-sided prisms and double pyramids
tetragonal
six-sided prisms
hexagonal
short, stubby crystals, with all sides unequal
orthorhombic
short and stubby, but the sides tilt at each end
monoclinic
flat with sharp edges, but no right angles
triclinic
contain sulfur
sulfides
contain oxygen
oxides
largest class
silicates
found in caves
carbonates
how a rock breaks or splits under stress
cleavage
how a mineral appears to reflect light
luster
the true color of a mineral in powdered form
streak
color is _____
caused by chemicals in a mineral