from The Century Dictionary.
- noun In mineralogy, a phosphate containing fluorin as an essential part.
from the GNU version of the Collaborative International Dictionary of English.
- noun (Chem.) A double salt of fluoric and phosphoric acids.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun chemistry A
double saltof fluoric acid and phosphoric acid.
Sorry, no etymologies found.
Thus the sulphate constitutes the minerals anhydrite, alabaster, gypsum, and selenite; the carbonate occurs dissolved in most natural waters and as the minerals chalk, marble, calcite, aragonite; also in the double carbonates such as dolomite, bromlite, barytocalcite; the fluoride as fluorspar; the fluophosphate constitutes the mineral apatite; while all the more important mineral silicates contain a proportion of this element.