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Rock and Mineral Review 4

Total questions: 10

Worksheet time: 20mins

Name
Class
Date
1.

One difference between a breccia rock and a conglomerate rock is that the particles in a breccia rock are

a)

more aligned

b)

more angular

c)

harder

d)

land derived

2.

Which rock is composed of the mineral halite that formed when seawater evaporated?

a)

limestone

b)

dolostone

c)

rock gypsum

d)

rock salt

3.

The photograph shows a large outcrop of rock composed primarily of visible crystals of mica, quartz, and feldspar. Based on the composition and foliated texture, this rock can best be identified as

a)

marble

b)

schist

c)

slate

d)

anthracite coal

4.

The minerals talc, muscovite mica, quartz, and olivine are similar because they

a)

have the same hardness

b)

are the same color

c)

contain silicon and oxygen

d)

break along cleavage planes

5.

Which mineral is commonly mined as a source of the element lead (Pb)?

a)

galena

b)

quartz

c)

magnetite

d)

gypsum

6.

The photograph shows an outcrop where a light-colored, igneous rock is cross cut by a dark-colored, igneous rock. This fine-grained, dark-colored, igneous rock is most likely

a)

rhyolite

b)

diorite

c)

basalt

d)

gabbro

7.

Which characteristic do samples of the mineral pyroxene normally exhibit?

a)

yellow to amber color

b)

bubbling in hydrochloric acid

c)

cleaves at 56° and 124°

d)

hardness of 5 to 6

8.

Which two properties are most useful in distinguishing between galena and halite?

a)

cleavage and color

b)

luster and color

c)

hardness and streak

d)

streak and cleavage

9.

Most of the sediment that is compacted and later forms shale bedrock is

a)

clay

b)

silt

c)

sand

d)

pebbles

10.

Within which rock type would a fossil most likely be found?

a)

Slate

b)

Gabbro

c)

Shale

d)

Pumice