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phosphate rock

Origin of phosphate rock
1865-70 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2016.
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Examples from the Web for phosphate rock
Historical Examples
  • Bound for Norfolk, Virginia, with a cargo of phosphate rock.

    Fighting in Cuban Waters Edward Stratemeyer
  • Sulphuric acid converts the phosphate rock into superphosphate, which is soluble and available for plant use.

  • Phosphorus is obtained from bone ash and from phosphate rock which is widely distributed over the surface of the earth.

    General Science Bertha M. Clark
  • But we were not looking for phosphate rock or goldfish; we were simply looking for ripe mullet.

    Favorite Fish and Fishing James Alexander Henshall

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