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Mineral
naturally occurring nonliving solids with unique chemical structure and composition.
Rock
a bunch of minerals.
Crystal form
shape of naturally forming crystals.
Luster
reflection of light from the mineral, “the shine”
Cleavage
the way a mineral breaks.
Specific gravity
the weight of the mineral.
Streak
color of the powder form of the mineral, it is always the same.
Hardness
resistance to scratching.
Silicates
75% of the continental crust, includers minerals such as feldspars and quartz
Nonsilicates
includes minerals called carbonates that include limestone and marble.
Note 
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