Fall Final Exam - Minerals

Front

What are minerals formed through crystallization of molten materials called?

Back

Igneous minerals.

Front

What is the difference between lava and magma?

Back

Lava is molten rock that reaches the Earth's surface, while magma is molten rock that is still beneath the surface.

Front

Which mineral is metallic, dense, copper-colored, and tarnishes green?

Back

Copper.

Front

What is the term for the ability of a mineral to break along flat surfaces?

Back

Cleavage.

Front

What is the softest mineral on the Mohs scale?

Back

Talc.

Front

What mineral is magnetic and has a grey to dark grey streak?

Back

Magnetite.

Front

What is the term for the way a mineral breaks when it does not break along flat surfaces?

Back

Fracture.

Front

What is the Mohs scale used for?

Back

To measure the hardness of minerals.

Front

What mineral is known for its soapy feel and is used in talcum powder?

Back

Talc.

Front

What is the primary characteristic of metallic minerals?

Back

They have a shiny luster and good electrical conductivity.