Definitions
from The Century Dictionary.
- noun An earthy mineral consisting chiefly of calcium phosphate with impurities, as alumina, etc.
Etymologies
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Examples
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It also constitutes the minerals ornithite, Ca_3 (PO_4) _2·2H_2O, osteolite and sombrerite.
Encyclopaedia Britannica, 11th Edition, Volume 4, Part 4 "Bulgaria" to "Calgary" Various
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_Phosphorite_ and _sombrerite_ are mineral forms of calcium phosphate, while _apatite_ consists of calcium phosphate together with calcium fluoride or chloride.
An Elementary Study of Chemistry William McPherson
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