SOL Review #5 - Minerals

The diagram below shows how a sample of the mineral mica breaks when hit with a rock hammer.

This mineral breaks in smooth, flat surfaces because it –

• is very hard

• is very dense

• contains large amounts of iron

• has a regular arrangement of atoms

Halite has three cleavage directions at 90° to each other. Which model best represents the shape of a broken sample of halite?

• 1

• 2

• 3

• 4

Which of these is NOT an ore mineral?

• Pyrite

• Magnetite

• Calcite

• Galena

Which term is most associated with the mineral property “hardness”?

• Shine

• Break

• Scratch

• Heavy

Which term is most associated with the mineral property “luster”?

• Shine

• Break

• Scratch

• Heavy

The chart below shows the Mohs scale for comparing the hardness of minerals. A mineral that can scratch fluorite and can be scratched by orthoclase is able to—

• Scratch both calcite and quartz

• Be scratched by both calcite and quartz

• Scratch calcite and be scratched by quartz

• Scratch quartz and be scratched by calcite

The streak test that is useful in identifying minerals, involves studying the–

• Mineral’s crystal with a microscope

• The color of the mineral as it burns

• The mineral under a fluorescent light

• Color of the powdered form of the mineral

Calcite dissolves when exposed to hydrochloric acid. Which geologic process is this most similar to?

• Faulting

• Folding

• Weathering

• Subduction

Which of the following minerals would you be able to scratch with a fingernail?

• Gypsum

• Corundum

• Fluorite

• Diamond

This igneous rock is compose primarily of large mineral crystals that were formed by–

• Cooling magma

• Compaction of sediments

• Evaporation of seawater

• Subduction

Tags

NGSS.MS-ESS2-1