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What8217s The Hardness Of A Phosphate Rock

phosphate rock mohs hardness cromalinsupport,hardness of rock phosphate for grinding mills,mining equipment. the main test of apatite is by its hardness , which is a 5 on the mohs scale. 9 specimens talc, gypsum, calcite, flourite, apatite, feldspar, quartz, beryl, and corundum. in 1812 a german mineralogist by the name of friedrich mohs developed a scale of hardness based upon a harder.customer reviews espoma rp28 rock phosphate,2013 this rock phosphate is mined and approved for organic gardening. super phosphate is processed with acid and triple phosphate even more so and has been shown to eventually give poorer results over time. and bone meal can entice animals to dig. the espoma is granulatedpelletized...so it is very easy to use without the risk of inhaling a powder..

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