fluorapatite


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fluorapatite

[flu̇·′rap·ə‚tīt]
(mineralogy)
Ca5(PO4)3F A mineral of the solid-solution series of the apatite group; common accessory mineral in igneous rocks.
An apatite mineral in which the fluoride member dominates.
References in periodicals archive ?
Confirmation of coating of Fluoride in Fluorapatite coated Hydroxyapatite was done using Energy Dispersion X-Ray Spectroscopy and it was observed that distinct fluoride peak was seen at 0.
5-20 mm in thickness) consisting of Ti-clinohumite + calcite + clinochlore [+ or -] muscovite [+ or -] fluorapatite [+ or -] graphite; (4) orange color reaction zone (2-6.
Instead of having fluorapatite, Mars has chlorapatite, where chlorine takes place of the fluorine component; it also has a phosphate-bearing mineral called merrillite, not found on Earth.
The results of X-ray powder diffraction analysis showed that the main minerals of the rock are calcite, fluorapatite and carbonate-fluorapatite.
Thus, fluorapatite (FA)-forming CPCs can be expected to have much lower resorbability than HA-forming CPCs.
The substitution converts it to the more acid-resistant fluorapatite.
Precipitation of fluorides as fluorapatite, through treatment with phosphoric acid and calcium chloride with pH control has been used with some success.
In igneous rocks, phosphorus occurs as apatite, usually a fluorapatite, [Ca.
Uranium mineralization at Nuottijarvi occurs as uraninite associated with fluorapatite breccia, hosted by a carbonate-apatite horizon at the contact between quartzite and graphitic breccia.
Without excavation of soft dentin, silver diamine fluoride reacts with protein in the dentinal tissue and deposits a layer of silver protein that resists acids produced by bacteria and promotes the formation of hydroxyapatite and fluorapatite.
Fluoride: Fluoride ions promote the formation of fluorapatite in enamel in the presence of calcium and phosphate ions produced during enamel demineralization by plaque bacterial organic acids.