Mineral Properties and Identification

Front

What is cleavage in minerals?

Back

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

Front

How many directions of cleavage does fluorite have?

Back

Fluorite has cleavage in 4 directions.

Front

Which mineral is the softest on the Mohs scale?

Back

Talc is the softest mineral on the Mohs scale.

Front

What is the Mohs scale?

Back

The Mohs scale is a scale used to measure the hardness of minerals, ranging from 1 (softest) to 10 (hardest).

Front

Can quartz scratch glass?

Back

Yes, quartz can scratch glass.

Front

How can you test if a mineral is harder than your fingernail?

Back

You can test it by scratching it with your fingernail.

Front

What mineral has perfect cleavage in three directions?

Back

Calcite has perfect cleavage in three directions.

Front

What is the hardness of talc on the Mohs scale?

Back

Talc has a hardness of 1 on the Mohs scale.

Front

What is the significance of a mineral's hardness?

Back

A mineral's hardness helps identify it and determines its use in various applications.

Front

What does it mean if a mineral has no cleavage?

Back

It means the mineral breaks irregularly and does not have flat surfaces.