Rocks And Minerals Quiz 1
10 Questions
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Rocks and minerals.
Questions and Answers
- 1.Which of the following minerals is the main constituent of Earth's mantle?
- A.
Olivine
- B.
Biotite
- C.
Feldspar
- D.
Quartz
- E.
Magnetite
- 2.What is considered "low" silica content in a magma melt?
- A.
About 50%
- B.
About 70%
- C.
About 20%
- D.
About 95%
- 3.Which of the following properties would you best use to distinguish halite from calcite?
- A.
Streak
- B.
Color and luster
- C.
Crystal system and cleavage
- D.
Taste
- 4.A mineral will scratch apatite, and is scratched by topaz. Which of the following might it be?
- A.
Olivine
- B.
Fluorite
- C.
Corundum
- D.
Bornite
- 5.Albite is an end member of which mineral group?
- A.
Orthoclase feldspar
- B.
Pyroxene
- C.
Olivine
- D.
Plagioclase feldspar
- 6.Which of the following minerals has NO cleavage, and conchoidal fracture?
- A.
Muscovite
- B.
Quartz
- C.
Calcite
- D.
Halite
- 7.A specimen exhibits strong birefringence, excellent cleavage in three directions, and effervesces when tested with HCl. These are distinguishing characteristics of...
- A.
Calcite
- B.
Halite
- C.
Muscovite
- D.
Pyrite
- 8.Which of the following minerals is an ore of mercury associated with volcanic activity?
- A.
Hematite
- B.
Cinnabar
- C.
Galena
- D.
Epsomite
- 9.Which of the native metals gold, copper and silver is the best conductor (1)? Which is most malleable (2)?
- A.
(1) silver and (2) copper
- B.
(1) copper and (2) copper
- C.
(1) copper and (2) gold
- D.
(1) gold and (2) gold
- E.
(1) silver and (2) gold
- 10.Which of the following sets of minerals are polymorphs of each other?
- A.
Quartz and corundum
- B.
Orthoclase and plagioclase
- C.
Calcite and dolomite
- D.
Calcite and aragonite
- E.
Biotite and muscovite
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