Mohs Scale of Hardness

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

• 1

• 3

• 6

• 10

Diamond is the hardest mineral.

• True

• False

Which mineral is HARDER than quartz?

• Topaz, Corundum, and Diamond

• Feldspar. Apatite, and Talc

• Talc, Gypsum, Topaz

• Diamond, Calcite, Fluorite

Using this scale, which mineral can scratch fluorite?

• Talc 
• Gypsum 
• Apatite 
• Calcite 

Can a penny scratch fluorite?

• Yes 
• No 

If a mineral is not scratched by corundum, what is its hardness rating?

• 1
• 4
• 5
• 10

What mineral in the scale is harder than talc and softer than calcite?

• Orthoclase

• gypsum

• apatite

• fluorite

What mineral on the scale is harder than gypsum and softer than fluorite?

• orthoclase

• calcite

• apatite

• fluorite

what is the mineral on the scale that is harder than calcite and softer than apatite?

• orthoclase

• topaz

• gypsum

• fluorite

which mineral can't be scratched by a fingernail but can be scratched by a penny.

• calcite

• corundum

• gypsum

• talc