Section #: 4.2
Identifying Minerals
Practice Test
1.
A mineral is __________ if it can be mined for profit.
a.
a rock
b.
an igneous rock
c.
an ore
d.
a crystal
Hint
2.
A mineral's __________ is the color when it is powdered
a.
luster
b.
density
c.
hardness
d.
streak
Hint
3.
What is the hardness of quartz?
a.
9
b.
2
c.
4
d.
7
Hint
4.
According to the table, which mineral is capable of scratching garnet?
Mineral
Color
Hardness
Gold
Metallic gold
2.5- 3
Apatite
Blue, green
5
Pyrite
Metallic pale brass, gold
6-6.5
Garnet
Red, deep red, brown
7.5- 8
Corundumm
Red, deep red
9
a.
apatite
b.
corundum
c.
gold
d.
pyrite
Hint
5.
__________ is the measure of how easily a mineral can be scratched.
a.
Luster
b.
Streak
c.
Hardness
d.
Specific gravity
Hint
6.
If a mineral breaks along distinct planes, it is said to have __________.
a.
a dull luster
b.
cleavage
c.
fracture
d.
a high specific gravity
Hint
7.
What is the numerical value for the hardest mineral on the Mohs hardness scale?
a.
11
b.
100
c.
10
d.
20
Hint
8.
What makes a mineral a gem?
a.
its deep color
b.
its association with native elements
c.
its rarity and beauty
d.
its pearly luster
Hint
9.
__________ is the way a mineral reflects light.
a.
Cleavage
b.
Color
c.
Streak
d.
Luster
Hint
