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What is luster?
the way mineral surfaces scatters light
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What are the 2 types of luster? Describe them.
- -Metallic=> looks like a metal
- -Nonmetallic=> silky, glassy, satiny, resinous, pearly, earthy
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What is the scratching resistance of a mineral/
mineral hardness
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What does Mohs scale measure?
the mineral hardness
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Name the order of Mohs scale
2.Gypsum
3.Calcite
4.Fluorite
5.Apatite
6.Orthoclase
7.Quartz
8.Topaz
9.Corundum
10.Diamond
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What is through going and oftens forms parallel steps?
cleavage
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What only forms on external surfaces?
crystal faces
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What is the smooth and curvy or jagged with sharp edges?
fracture
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The single property that can be used to identify any mineral is _________/
D.
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The most useful diagnostic tool is color. True or false.
false
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If a body magma becomes more felsic, its viscosity will
A. increase
b. decrease
C. stay the same
increase
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