phosphorite


phos·pho·rite

noun \ˈfäs-fə-ˌrīt\

Definition of PHOSPHORITE

1
:  a fibrous concretionary apatite
2
phos·pho·rit·ic \ˌfäs-fə-ˈri-tik\ adjective

First Known Use of PHOSPHORITE

1796

phosphorite

noun    (Concise Encyclopedia)

Rock with a high concentration of phosphates in nodular or compact masses. The phosphates may be derived from a variety of sources, including marine invertebrates that secrete shells of calcium phosphate and the bones and excrement of vertebrates. Typical phosphorite beds contain about 30% phosphorus pentoxide (PO) and constitute the primary source of raw materials for phosphate fertilizers. Significant deposits in the U.S. include the Phosphoria Formation in Idaho and the Monterey Formation in California. Major deposits also occur in the Sechura Desert in Peru.

Variants of PHOSPHORITE

phosphorite or phosphate rock

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