Geology Assignment 3
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
