Ch 13 Minerals and Mining

Front

What is the softest mineral on Moh's hardness scale?

Back

Talc

Front

Which law governs activities after mining is complete?

Back

Surface Mining Control and Reclamation Act of 1977.

Front

What does the luster of a mineral describe?

Back

The shininess of the mineral.

Front

What mineral property is indicated by the term 'streak'?

Back

The color of the powder left by a mineral when it is scratched.

Front

What type of rock is formed by heat and pressure changing the crystalline structure of existing rock?

Back

Metamorphic rock.

Front

What is the hardest mineral on Moh's hardness scale?

Back

Diamond.

Front

What is the definition of a mineral?

Back

A naturally occurring inorganic solid with a definite chemical composition and crystalline structure.

Front

What is the process of extracting minerals from the earth called?

Back

Mining.

Front

What is the difference between igneous and sedimentary rocks?

Back

Igneous rocks form from cooled magma or lava, while sedimentary rocks form from the accumulation of sediment.

Front

What is cleavage in minerals?

Back

The tendency of a mineral to break along flat surfaces.