fluorapatite

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fluor·ap·a·tite

(flōr-ap'ă-tīt),
A naturally occurring fluorophosphate of calcium.

fluor·ap·a·tite

(flōr-ap'ă-tīt)
A form of hydroxyapatite in which fluoride ions have replaced some of the hydroxyl ions; as a component of teeth, fluorapatite resists acids from plaque-forming bacteria and high carbohydrate intake.
See also: apatite, hydroxyapatite

fluor·ap·a·tite

(flōr-ap'ă-tīt)
Component of teeth, fluorapatite resists acids resulting from plaque-forming bacteria and high carbohydrate intake.

fluorapatite (flôrap´ətīt),

n a member of the family of minerals that make up the basic structure of bones and teeth; basically a hydroxapatite form in which fluoride ions replace hydroxyl ions.
fluorapatite crystal
(kris´təl),
n the crystalline structure that occurs after hydroxyapatite changes into fluorapatite as a result of the tooth being exposed to fluoride.

fluorapatite

a fluorine-bearing mineral in rock phosphate. Contributes to local fluorine poisoning and also to distant sites if the rock phosphate is mined for livestock feeding as a dietary phosphorus supplement.
References in periodicals archive ?
A few specimens of unusual pseudomorphs of gypsum after tabular fluorapatite crystals to about 3 cm in diameter were found in 2002.
The thick, deep peach-pink, almost wholly gemmy fluorapatite crystals reach 4 x 4 x 6 cm; in sunlight their rich color vanishes, but it returns again in the lamplight and is said to be permanently reversible.
In the same room at the Holiday Inn, Matthias Jurgeit was showing some nice specimens from Cerro del Mercado, Durango, Mexico, the source of gemmy yellow fluorapatite crystals.
Budil also had some beautiful blue fluorapatite crystals on green elbaite from Paraiba, Brazil.
Altered fluorapatite crystals occur at many pegmatites in the district, especially at Nahia where white crystals 30 cm across and 15 cm tall and blue-green 15 x 15-cm crystals were found (Bandy, 1951).