Minerals and Mohs Hardness Scale

Talc is the softest mineral on Mohs Hardness Scale.

• True

• False

If a mineral is scratched by talc, what must its hardness rating be?

• 1

• 3

• 6

• 10

Diamond is the hardest mineral.

• True

• False

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