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mineral classify its hardness softness arab

The scale comprises ten reference minerals of distinctively different hardness levels classified from the softest 1 talc to the hardest 10 diamond the hardest known mineral at the time that work as a comparative measure to define the resistance of new samples... As a leading global manufacturer of crushing equipment, milling equipment,dressing equipment,drying equipment and briquette equipment etc. we offer advanced, rational solutions for any size-reduction requirements, including quarry, aggregate, grinding production and complete plant plan.

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