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Online Quiz
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1
The bulk of our metallic mineral resources is associated with
A)metamorphic rocks
B)igneous rocks
C)weathered material
D)sedimentary rocks
2
Hydrothermal deposits of ore minerals form
A)from hot water circulating through rocks
B)where chemical weathering has concentrated ore by removing non-ore minerals
C)where igneous intrusions have baked rocks which they intruded
D)all of the above
3
Large feldspar crystals are abundant in what type of ore deposit?
A)pegmatite
B)sedimentary
C)metamorphic
D)weathered
4
Why might certain metals be considered renewable resources while others are nonrenewable?
A)renewable metals are being formed in the earth at a rate slower than our use of them
B)the renewable metals are those which have been recycled
C)the renewable metals are those which we are not presently using
D)the renewable metals are those which we expect to be mining from the sea floor
5
Which has the greatest world reserves (supply for the future)?
A)aluminum
B)copper
C)lead
D)zinc
6
Aluminum ore deposits are
A)residual deposits
B)metamorphic deposits
C)placer deposits
D)evaporites
7
Gypsum is mined to yield this
A)Plaster of Paris (primarily for making wallboard)
B)table salt
C)window glass
D)sulfur
8
Recycling aluminum is beneficial because
A)aluminum is rare and hard to find
B)aluminum is highly toxic and must be kept out of landfills
C)less electricity is required to re-melt aluminum than refine it from ore
D)both a and c are correct.
9
Lateritic weathering produces which ore deposit?
A)bauxite
B)placer
C)evaporite
D)kimberlite
10
Hydrothermal deposits are predominantly composed of what type of ore minerals?
A)evaporite
B)sulfide
C)oxide
D)pegmatite
11
Chromite forms
A)in pegmatite
B)in hydrothermal deposits
C)by crystal settling in a magma
D)as a placer deposit
12
Rock salt and rock gypsum are what kind of mineral deposit?
A)evaporite
B)hydrothermal
C)placer
D)pegmatite
13
Blood diamonds
A)are red-colored diamonds found in Australia
B)are those handed down through generations of the same family
C)are diamonds formed by meteor impacts with earth
D)are diamonds mined in war zone countries, like Sierra Leone, Africa, and sold to finance weapons.
14
Metamorphism of coal produces
A)gold
B)graphite
C)copper
D)gypsum
15
Banded iron formation is what kind of mineral deposit?
A)evaporite
B)hydrothermal
C)placer
D)sedimentary
16
Black smokers on the seafloor occur near
A)spreading ridges
B)oceanic trenches
C)subduction zones
D)all of the above
17
Diamonds are found in
A)evaporites
B)pegmatites
C)kimberlites
D)laterites
18
Which mineral/rock resource is the most intensively used in the U.S.?
A)sand and gravel
B)evaporites
C)rock gypsum
D)kimberlites
19
Manganese nodules form
A)in magmas
B)by lateritic weathering
C)near igneous intrusion
D)on the deep sea floor
20
Which ore deposit yields aluminum?
A)bauxite
B)pegmatite
C)evaporite
D)kimberlite
21
Metallic mineral deposits that are worth mining are
A)ores.
B)concentrates.
C)kimberlites.
D)pegmatities.
22
The concentration factor
A)measures the size of an ore body.
B)defines the same limit for any ore.
C)measures the relative enrichment of ore bodies.
D)must be higher for more-valuable metals.
23
Aluminum is a widely used metal because it
A)is mined extensively in the United States.
B)can be processed with low energy inputs.
C)is both strong and light.
D)is easy to extract from most silicates.
24
The most heavily used metal is
A)iron.
B)copper.
C)gold.
D)lead.
25
Waste materials left from processing mineral deposits are called
A)nodules.
B)tailings.
C)spoil piles.
D)placers.





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