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2nd SW #4 Minerals - open book test
Contributed by: Ruble
What does the Mohs scale measure?
Streak
Hardness
Luster
Cleavage
What mineral is the softest on the Mohs Hardness
Scale and is used in baby powder?
feldspar
gypsum
calcite
talc
_______ means that the mineral was formed by 
nature, not by humans or machine.
naturally occurring
inorganic processes
solid
crystal shape
If a rock will scratch a fingernail but not a penny, then:
It is harder than Calcite but softer than Apatite
It is harder than Talc but softer than Fluorite
If two minerals produce the same color streak, but one 
can scratch the other, then.....
 Their hardness and streaks are the same
Their hardness is the same, but their streak is different
Their hardness is not the same, but their streaks are.
Streak and hardness don't matter, only luster matters.
________ is how the mineral reflects light.
cleavage
 streak
magnetic
luster
What mineral property is being shown?
luster
streak
 hardness
cleavage
Which of the following is NOT true of minerals?
they are inorganic
they have a crystal structure
they are formed in nature
 they are liquids
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