Minerals and Rocks

In which set are the rock drawings labeled with their correct rock types?

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The metamorphic rock at location A on the cross section shown is most likely

• marble

• quartzite

• slate

• phyllite

The three statements below are observations of the same rock sample:

• The rock has intergrown crystals from 2 to 3 millimeters in diameter.

• The minerals in the rock are gray feldspar, green olivine, green pyroxene, and black amphibole.

• There are no visible gas pockets in the rock.

This rock sample is most likely

• granite

• sandstone

• phyllite

• gabbro

Drawings of six sedimentary rocks labeled A through F are shown below.

Which table below shows the rocks in the drawings correctly classified by texture?

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According to the Earth Science Reference Tables, if granite were subjected to intense heat and pressure, it would most likely change to

• conglomerate

• gneiss

• basalt

• sandstone

Which conclusion about graphite and diamond is best supported by these diagrams?

• They have a similar color because of their similar compositions.

• They have similar crystal shapes because of their similar compositions.

• They have different chemical compositions due to the difference in their atomic arrangements.

• They have different physical properties due to the difference in their atomic arrangements.

Which mineral property is being tested?

• luster

• fracture

• streak

• density

The classification system in the table above was mostly based on the

• way in which the rock formed

• color of the rock

• size of the crystals in the rock

• age of the minerals in the rock

Based in the info in the "Igneous Rock" Table, what rock is Letter B?

• Gabbro

• Granite

• Rhyolite

• Basalt

Which rock is represented by sample C?

• Limestone

• Granite

• Gneiss

• Rhyolite