Rocks and Minerals

Front

What is the hardest mineral on the Mohs scale?

Back

Diamond is the hardest mineral on the Mohs scale.

Front

What does the Mohs hardness scale measure?

Back

The Mohs hardness scale measures the hardness of minerals.

Front

Which mineral can scratch quartz?

Back

Topaz and Diamond can scratch quartz.

Front

What can you infer about a mineral that can be scratched by a fingernail?

Back

It is not very hard.

Front

Name two minerals that are harder than Fluorite.

Back

Quartz and Feldspar are harder than Fluorite.

Front

What is the definition of a mineral?

Back

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

Front

What is cleavage in minerals?

Back

Cleavage is the tendency of a mineral to break along flat surfaces.

Front

What is the difference between luster and streak?

Back

Luster describes how a mineral reflects light, while streak is the color of the powder a mineral leaves when scratched on a surface.

Front

What is the definition of density in minerals?

Back

Density is the mass of a mineral divided by its volume.

Front

What is an example of a mineral with a metallic luster?

Back

Pyrite is an example of a mineral with a metallic luster.