Rock and Mineral Review 4

One difference between a breccia rock and a conglomerate rock is that the particles in a breccia rock are

• more aligned

• more angular

• harder

• land derived

Which rock is composed of the mineral halite that formed when seawater evaporated?

• limestone

• dolostone

• rock gypsum

• rock salt

The photograph shows a large outcrop of rock composed primarily of visible crystals of mica, quartz, and feldspar. Based on the composition and foliated texture, this rock can best be identified as

• marble

• schist

• slate

• anthracite coal

The minerals talc, muscovite mica, quartz, and olivine are similar because they

• have the same hardness

• are the same color

• contain silicon and oxygen

• break along cleavage planes

Which mineral is commonly mined as a source of the element lead (Pb)?

• galena

• quartz

• magnetite

• gypsum

The photograph shows an outcrop where a light-colored, igneous rock is cross cut by a dark-colored, igneous rock. This fine-grained, dark-colored, igneous rock is most likely

• rhyolite

• diorite

• basalt

• gabbro

Which characteristic do samples of the mineral pyroxene normally exhibit?

• yellow to amber color

• bubbling in hydrochloric acid

• cleaves at 56° and 124°

• hardness of 5 to 6

Which two properties are most useful in distinguishing between galena and halite?

• cleavage and color

• luster and color

• hardness and streak

• streak and cleavage

Most of the sediment that is compacted and later forms shale bedrock is

• clay

• silt

• sand

• pebbles

Within which rock type would a fossil most likely be found?

• Slate

• Gabbro

• Shale

• Pumice

Tags

NGSS.MS-ESS2-3

NGSS.MS-LS4-1