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granite and quartzite hardness in gambia

Granite Hardness How Hard is the Natural Stone,Sep 05 2019 · Granite comes in at a 6 to 7 on the Mohs scale meaning it is relatively hard The igneous rock is comprised of mostly quartz and feldspar along with smaller amounts of various other minerals An example of the hardness of a granite countertop can be seen in the fact that a knife blade will not scratch the surface... 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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