Mineralogical hardness
You can view data for three different hardnesses.
Hardness ranges on scale from 1 to 10 and mineralogical hardness depends upon the ability of a material to scratch another.
Units
Moh scale
Notes
The scale is roughly logarithmic, that is, a material with a hardness of 8 is roughly 10 times as hard as another material whose hardness is 7, which in turn is 10 times as hard as a material whose hardness is 6, and so on. The minerals chosen by Moh for this scale are:
- 10: diamond
- 9: corundum
- 8: topaz
- 7: quartz
- 6: orthoclase
- 5: apatite
- 4: fluorite
- 3: calcite
- 2: gypsum
- 1: talc
Literature sources
- G.V. Samsonov (Ed.) in Handbook of the physicochemical properties of the elements, IFI-Plenum, New York, USA, 1968.
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* |
71
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** |
103
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| *Lanthanoids | * |
57
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| **Actinoids | ** |
89
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