phosphorite

(fäsfə rīt′)

noun

  1. natural calcium phosphate, similar chemically to apatite but without crystal form
  2. a sedimentary phosphate rock

Related Forms:

See phosphorite in American Heritage Dictionary 4

noun
A sedimentary rock consisting predominantly of apatite and other phosphates.

Origin:

Origin: phosphor(us)

Origin: + -ite1

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