Minerals and Mohs Hardness Scale

What is # 4 on the MOH's scale?

• Fluorite

• Feldspar

• Quartz

• Calcite

Feldspar is # 6.

• True

• False

What is # 8?

• Minerals

• Apatite

• Corundum

• Topaz

Which mineral is HARDER than quartz?

• Topaz, Corundum, and Diamond

• Feldspar. Apatite, and Talc

• Talc, Gypsum, Topaz

• Diamond, Calcite, Fluorite

Quartz can be scratched by Topaz.

• True

• False

Using this scale, which mineral can scratch fluorite?

• Talc 

• Gypsum 

• Apatite 

• Calcite 

Can a penny scratch fluorite?

• Yes 

• No 

What can scratch Talc?

• Gypsum

• Diamond

• Quartz

• All of them

Using this scale, which mineral can scratch a Drill bit?

• Talc 

• Topaz

• Corundrum

• Quartz

Why did quartz scratch the glass easier than feldspar?

• Because it is softer.

• Because it has a lower scale.

• Because it is harder.

• None of the above