apatite

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ap·a·tite

(ap'ă-tīt),
Generic name for a class of minerals with compositions that are variants of the formula D5T3M, where D is a divalent cation, T is a trivalent tetrahedral compound ion, and M is a monovalent anion; calcium phosphate apatites are important mineral constituents of bones and teeth. See: hydroxyapatite.

apatite

[ap′ətīt]
Etymology: Gk, apate, deceit
an inorganic mineral composed of calcium and phosphate that is found in the bones and teeth.

ap·a·tite

(ap'ă-tīt)
A class of naturally occurring crystalline minerals containing calcium and phosphorus; hydroxyapatite is a component of bones and teeth.
See also: fluorapatite, hydroxyapatite

ap·a·tite

(ap'ă-tīt)
Generic name for a class of minerals with compositions that are variants of the formula D5T3M, where D is a divalent cation, T is a trivalent tetrahedral compound ion, and M is a monovalent anion; calcium phosphate apatites are important mineral constituents of bones and teeth.

apatite (ap´ətīt),

n the inorganic mineral substance of teeth and bone. See also carbonate hydroxyapatite.

apatite

1. calcium phosphate; one of the two mineral constituents of bones and teeth.
2. fluorapatite; a naturally occurring rock mineral containing fluorine.

apatite calculi
see apatite urolith.
References in periodicals archive ?
These expeditions were made by fishermen from the western municipalities of Puerto Rico who conducted a regular industry to and from Mona for fish, turtles, goats, pigs, wood, and phosphorite.
Just basing on these fields the Kyzylkum's phosphorite plant appeared.
The authors therefore conclude that the formation of the earliest worldwide phosphorites 2 billion years ago can be linked to the establishment of sulfur bacteria habitats, triggered by the oxygenation of the Earth.
Between Narva and the Pakri Islands, in the klint and in the valleys cutting into the bedrock, graptolite argillite and phosphorite rich in U are exposed or spread beneath the Quaternary cover.
Powdered soil or Nauru phosphorite (5-10mg) was placed in a cylindrical mould (~20mm diameter) and vacuum infiltrated/dispersed in ~2 mL of a low viscosity, low volatility epoxy resin (Epo-thin[R], Buehler Pty Ltd, USA).
The discovery of new remains assigned to Stenoplesictis from the famous phosphorites of the Quercy region (southern France) by PEIGNE & DE BONIS (1999) led to a more detailed study of this genus.
Their surroundings were partly destroyed by the phosphorite mining (Fig.
The memorandum written on July 11 by Weizsacker declares that German economical interests in the Balticum are substantial: food products, oil-shale and phosphorite imports are crucial for German war economy, and one should save what can be saved.
3+] ions the maximum binding was up to 242 and 249 mmol per 100 g apatite for magnesium containing synthetic apatites and the triboactivated natural phosphorite sample, respectively.
The uranium occurs with phosphorite and mining would involve the extraction of both uranium oxide and phosphate.
The existence of many strata of diatom remains and phosphorite deposits is clear proof of this considerable loss of production.