Properties of Minerals

Front

What is the Scratch Test used for?

Back

The Scratch Test is used to determine the hardness of a mineral by scratching it with a material of known hardness.

Front

What does the term 'luster' refer to in minerals?

Back

Luster refers to how a mineral reflects light, which can be metallic, nonmetallic, shiny, dull, or glassy.

Front

What does the Mohs scale measure?

Back

The Mohs scale measures the hardness of minerals, ranking them from 1 (talc) to 10 (diamond).

Front

What is 'fracture' in terms of mineral properties?

Back

Fracture is the way a mineral breaks when it does not break along a flat surface, resulting in irregular or jagged edges.

Front

How is 'hardness' defined in minerals?

Back

Hardness is a measure of how resistant a mineral is to scratching.

Front

What is 'cleavage' in mineralogy?

Back

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

Front

What is the difference between 'cleavage' and 'fracture'?

Back

Cleavage is the tendency to break along flat surfaces, while fracture is the irregular breakage of a mineral.

Front

What is an example of a mineral with perfect cleavage?

Back

Mica is an example of a mineral that has perfect cleavage, allowing it to split into thin sheets.

Front

What is the significance of a mineral's streak?

Back

Streak is the color of the powder produced when a mineral is scratched on a porcelain plate, which can help identify the mineral.

Front

How can you determine if a mineral is metallic or nonmetallic?

Back

You can determine this by observing its luster; metallic minerals have a shiny appearance, while nonmetallic minerals may appear dull or glassy.