Geology Assignment 3

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List 3 processes that destroys minerals.

1.) melting 2.) dissolving 3.) chemical reaction

List the 4 parts of a definition of a mineral.

1.) natural 2.) crystalline solid 3.) inorganic 4.) definite chemical composition

The silicon tetrahedra is composed of: a. 1 silicon and 4 oxygen atoms b. 1 silicon and 5 oxygen atoms c. 2 silicon and 3 oxygen atoms d. 1 silicon and 3 oxygen atoms

a. 1 silicon and 4 oxygen atoms

Stalactites in caves are predominantly made up of: a. Calcite b. Quartz c. Halite d. Gypsum

a. Calcite

Rutile, TiO2, is an example of a: a. Oxide b. Halide c. Silicate d. Sulfate

a. Oxide

Most common rock-forming minerals can be grouped under: a. Silicates b. Carbonates c. Sulfides d. Sulfates

a. Silicates

Minerals with sharp, well-developed crystal faces are called: a. Anhedral b. Euhedral c. Subhedral

b. Euhedral

Apatite is produced by organisms in their bones; therefore, apatite is an organic mineral. a. True b. False

b. False

Fluorite, CaF2 is an example of a: a. Silicate b. Halide c. Sulfide d. Oxide

b. Halide

Sphalerite, ZnS is an example of a: a. Sulfate b. Sulfide c. Halide d. Carbonate

b. Sulfide

Which of the following minerals crystallize via precipitation from a solution? a. Halite b. Calcite c. Both of them d. None of them

c. Both of them

Carbonate anionic groups must contain at least one of the following atoms: a. Si b. Fe c. C d. S

c. C

Coral reefs are primarily composed of: a. Quartz b. Silicates c. Calcite d. Plagioclase feldspars

c. Calcite

Which of the following pairs are polymorphs? a. Quartz and feldspar b. Feldspar and Pyroxene c. Diamond and Graphite d. None of them

c. Diamond and Graphite

corresponding minerals group for FeCO3

carbonate

corresponding minerals group for MgCO3

carbonate

Minerals that precipitate from gas are commonly found near: a. Geysers b. Volcanic vents c. Caves d. Both (a) & (b)

d. Both (a) & (b)

Which is the hardest mineral found in nature? a. Talc b. Biotite c. Quartz d. Diamond

d. Diamond

Which of the following minerals crystallize via solid-state diffusion? a. Quartz b. Calcite c. Diamond d. Garnet

d. Garnet

Hot rock melts from which minerals crystallize can be found in: a. Subduction zones b. Mid-oceanic ridges c. Volcanic vents d. Only (a) and (c) e. All of (a), (b) and (c)

d. Only (a) and (c)

Which of the following is not a common gemstone? a. Diamond b. Ruby c. Emerald d. Quartz

d. Quartz

corresponding minerals group for KCl

halide

corresponding minerals group for Al2O3

oxide

corresponding minerals group for Fe3O4

oxide

corresponding minerals group for Hematite (Fe2O3)

oxide

corresponding minerals group for MgO

oxide

corresponding minerals group for CaTiSiO4

silicate

corresponding minerals group for KAlSiO4

silicate

corresponding minerals group for Mg2SiO4

silicate

corresponding minerals group for CaSO4 ..2H2O

sulfate

corresponding minerals group for CuFeS2

sulfide

corresponding minerals group for MoS2

sulfide


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