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Mineral, Rocks And Fossils 2
Test Description: Questions on rocks, minerals, and the rock cycle.
Instructions: Answer all questions to get your test result.
1) If you observe a wide variety of samples of quartz, which property is likely to change the most, from sample to sample because of minor impurities?
A
hardness
B
color
C
density
D
luster
2) Which mineral always reflects nearly all the light that strikes a freshly broken surface?
A
pyrite
B
muscovite mica
C
quartz
D
biotite mica
3) Which mineral will scratch glass (hardness = 5.5) but not pyrite?
A
fluorite
B
orthoclase
C
quartz
D
gypsum
4) Which property of quartz is always the same from sample to sample?
A
color
B
volume
C
density
D
mass
5) What mineral property is shown being tested in the diagram?
A
cleavage
B
luster
C
color
D
streak
6) The mineral shown to the right could not be
A
muscovite mica
B
talc
C
magnetite
D
graphite
7) What is the name of the physical test shown?
A
luster
B
hardness
C
streak
D
cleavage
8) According to the Earth Science Reference Tables, what is the percentage of the mineral potassium feldspar in a typical sample of granite?
A
40%
B
100%
C
25%
D
5%
9) What mineral is found in a wide variety of igneous rocks?
A
quartz
B
olivine
C
orthoclase feldspar
D
plagioclase feldspar
10) Which of the following is a fine-grained, dark-colored igneous rock?
A
basalt
B
diorite
C
rhyolite
D
granite
*select an answer for all questions
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