hardness of minerals

Mineral vibrating sieve separatorMineral Hardness Hardness H is the resistance of a mineral to scratching It is a property by which minerals may be described relative to a standard scale of 10 minerals known as the Mohs scale of hardness The minerals that make up the Mohs scale are listed in Table 3 The degree of hardness is determined by observing the comparative ease -hardness of minerals-,Hardness of Gems ClassicGems netMineral hardness is a physical characteristic that can be tested measured and compared to other minerals One method is to test the hardness of one mineral against another This is done through the ability of a harder material to scratch a softer one ……

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