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Rocks and Minerals

Last updated over 2 years ago

24 questions

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Which is not a defining characteristic of minerals?

solid

naturally occuring

specific chemical composition

organic

Which is a mineral?

diorite

bituminous coal

ice

magma

Which characteristic describes the shininess of a mineral?

luster

cleavage

hardness

streak

Which mineral has a nonmetalic luster?

galena

calcite

chalcopyrite

pyrite

Which is true regarding the Mohs Scale?

The Mohs Scale measures fracture

A mineral with a Mohs value of 5 is harder than a mineral with a Mohs value of 6

Talc has a Mohs value of 1

All of the above are true

What is the consequence of muscovite's cleavage?

It flakes off in thin sheets

It breaks into perfect cubes

It breaks into rhombs (slanted cubes)

muscovite exhibits fracture, not cleavage

Why did we have to heat our solution in order to grow crystals?

The heat created a seed crystal

The heat provided the energy to trigger crystal growth

The heat allowed us to dissolve more CuSO4 into solution than we could at room temperature

The heat increased the density of water which promoted crystal growth

Which mineral has a positive acid test?

halite

calcite

selenite

quartz

Which would you use to perform a streak test?

white tile

glass

iron nail

hydrochloric acid

Which is not an iron ore?

galena

hematite

magnetite

pyrite

Igneous rocks result from:

cooled magma

cooled lava

both of the above

none of the above

Intrusive igneous rocks tend to have ______________ crystals than extrusive igneous rocks.

bigger

smaller

fewer

softer

Which type of magma produces the darkest rocks?

rhyolitic 

basaltic

intermediate

magma type doesn't affect rock color

Which is an extrusive igenous rock?

diorite

basalt

gabbro

granite

Which rock has a vesicular texture?

pumice

rhyolite porphyry

granite

obsidian

The amount of which mineral determines the "redness" of granite.

quartz

plagioclase feldspar

microcline feldspar

biotite

Which geologic feature is largely the result of chemical weathering?

canyons

caves

mountains

volcanoes

Which is not a major mechanism of erosion?

wind

water

gravity

lithification

Which is a biochemical sedimentary rock?

conglomerate

shale

coquina

breccia

What type of rock makes up the majority of the walls of the Grand Canyon?

igneous

sedimentary

metamorphic

Which event in the formation of the grand canyon was most recent?

uplift of the plateau

incision of the canyon

deposition of sediments from an inland sea

lava dams from volcanoes

Metamorphic rocks form from:

existing rocks being exposed to extreme heat and pressure

magma cooling

lithification of sediments

all of the above

Foliation refers to which?

layers of sedimentary rock

different sized grains in igneous rocks

bands of minerals in metamorphic rocks

the chemical composition of a mineral

Which has a parent rock that is igneous?

anthracite coal

gneiss

slate

quartzite