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 ?
Early diagenesis of bone and tooth apatite in fluvial and marine settings: constraints from combined oxygen isotope, nitrogen and REE analysis.
However, the discovery of hydrogen-rich apatite within lunar rocks in 2010 seemed to hint at a more watery past.
This discovery has overturned the long-held assumption that the hydrogen in apatite is a good indicator of overall lunar water content.
Flowers, Karlstrom and other players in the canyon dating game lined up against a meeting-room wall and passed a microphone back and forth, arguing over what apatite grains were telling them.
The SEM images of the apatite layer formed on the surface of nanocomposites are shown in Figs 2a-2f.
The calcite layer and its boundary with the apatite tubes might allow access into the cuticle by microbes down to the typical size of a bacterium (0.
A bench-scale apatite recovery test work programme is being prepared to determine the potential quality and recovery rates of a phosphate rock concentrate.
Bones from weight-bearing animals, such as cattle, contain the same chemical form of apatite as do fish bones but in a more highly crystallized form that combines less readily with metals, Wright says.
As a result, the pH of the solution and thus the degree of the super-saturation with result to apatite increases.
The common manganese minerals of India are feebly magnetic and hence can be separated from less magnetic minerals like quartz, barite, calcite, apatite etc.
Geoscientists at Lehigh University had first noted that something was missing from the results of chemical analyses of apatite in 1975.
Apatite (Associative Perusal of APIs That Identifies Targets Easily) takes a different approach, allowing programmers to browse APIs by association, seeing which packages, classes and methods tend to go with each other.