Mohs

A hardness scale developed by F. Mohs in 1812 where the hardness of a material is compared with that of a mineral. Any mineral is able to mark any other below it on the Mohs scale.

MohsMineral
1Talc
2Gypsum
3Calcite
4Fluorite
5Apatite
6Orthoclase
7Quartz
8Topaz
9Corundum
10Diamond
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Anthracite 3 to 3.5 Clip
Bismuth 2.25 Clip
Diamond 10 Clip
Osmiridium 6.5 Clip
Quartz 7 Clip
Titanium Carbide 9 to 9.5 Clip
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See also: Hardness, Mohs, Friederich.

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Subjects: Geology Mechanical Engineering