Minerals/Misc.
The element silicon (Si) is used in the production of cell phones. Which mineral could be a possible source of this silicon?
A) calcite B) galena C) halite D) quartz
Answer D: Quartz
Where do intrusive rocks form?
Inside the Earth.
On what page of the ESRT is the sedimentary rock identification chart?
page. 7
On what page of the ESRT is the metamorphic rock identification chart?
page. 7
Which rock is most likely to have the fossil of a cephalopod?
a. Siltstone b. gneiss c. schist d. pumice
Answer: a. siltstone
Which mineral has a nonmetallic luster, fractures, and is yellow to amber in color?
Sulfur
What is the relationship between magma/lava cooling rate and the size of the crystals?
As cooling rate increases, size of the crystals increase. Or....a direct relationship.
What are the three textures of sedimentary rocks?
Clastic, Bioclastic, Crystalline
What type of foliation is alternating light and dark stripes?
Banding
How do sedimentary rocks become metamorphic rocks?
Heat and/or Pressure
What feature determines all of the properties of a mineral?
The internal arrangement of atoms.
What is a vesicular texture?
air pockets/holes
What is the name of grains that have a size between 0.006 and 0.2 cm?
Sand
Which four rocks could have formed through contact metamorphism?
Hornfels, Quartzite, Marble, Metaconglomerate
How do igneous rocks become sediment?
Weathering and erosion
Which mineral can be found in the rocks phyllite, sandstone, and granite?
Quartz
What three minerals are present in diorite?
Plagioclase feldspar, biotite, amphibole
What is the difference between Conglomerate and Breccia?
Conglomerate has rounded fragments, Breccia has angular fragments.
Which metamorphic rock could bubble with acid?
Marble
How can an igneous rock become a metamorphic rock?
Heat and/or Pressure
Which two minerals have cleavage planes at right angles?
A) biotite mica and muscovite mica
B) halite and pyroxene
C) quartz and calcite D) sulfur and amphibole
Answer: B. Halite and Pyroxene
What TWO igneous rocks are: vesicular, extrusive, with a composition of potassium feldspar, quartz, plagioclase feldspar, biotite, amphibole.
Vesicular Rhyolite and Pumice
Identify the sedimentary rock: Bioclastic with a composition of calcite.
Limestone
Identify the metamorphic rock: foliated, mineral alignment, fine grain size, composed of mica
Slate
Describe how sediments could become Sandstone.
Deposition and burial -> compaction and cementation -> sedimentary rock