Earth Science Sol Rocks and Minerals

The image 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^o to each other. Which model best represents the shape of a broken sample of halite?

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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

• happy

A mineral that can scratch fluorite, but 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

• Weatheirng

• Subduction

Which mineral would you be able to scratch with a fingernail?

• Gypsum

• Corundum

• Fluorite

• Diamond

This igneous rock is composed primarily of large mineral crystals that were formed by--

• Cooling magma

• Comopaction of sediments

• Evaporation of water

• Subduction