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Mohs Hardness Scale

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The Mohs scale of mineral hardness was created in 1812 by the German geologist Friedrich Mohs and is used to measure the relative hardness of minerals by their resistance to scratching. Simple though relatively imprecise compared to other scales, it is commonly used by gemologists and field geologists.

10 facts:

Apatite
   has the hardness rating of   
5
Absolute hardness - 48
Calcite
   has the hardness rating of   
3
Absolute hardness - 9
Corundum
   has the hardness rating of   
9
Absolute hardness - 400
Diamond
   has the hardness rating of   
10
Absolute hardness - 1500
Fluorite
   has the hardness rating of   
4
Absolute hardness - 21
Gypsum
   has the hardness rating of   
2
Absolute hardness - 3
Orthoclase Feldspar
   has the hardness rating of   
6
Absolute hardness - 72
Quartz
   has the hardness rating of   
7
Absolute hardness - 100
Talc
   has the hardness rating of   
1
Absolute hardness - 1
Topaz
   has the hardness rating of   
8
Absolute hardness - 200


Facts contributed by:


chooky








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