Mineral Hardness

A useful and commonly utilized property of minerals is hardness. A standard hardness scale called the Mohs scale is used to assess hardness.
ScaleMineral
10
Diamond
9
Corundrum
8
Topaz
7
Quartz
6
Potassium feldspar
5
Apatite
4
Fluorite
3
Calcite
2
Gypsum
1
Talc
ScaleCommon material
5.5
Glass, pocket knife
3.5
Copper penny
2.5
Fingernail

Index

Tables

Data Reference
Lutgens & Tarbuck
Ch 2
 
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