apatite


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ap·a·tite

 (ăp′ə-tīt′)
n.
1. Any of a group of natural, variously colored calcium phosphate minerals containing fluorine, chlorine, or hydroxyl. These compounds form hexagonal crystals and are components of bones and teeth, are a source of phosphorus for plants, and are used in the manufacture of fertilizers.

[From Greek apatē, deceit (from its often being mistaken for other minerals).]

apatite

(ˈæpəˌtaɪt)
n
(Minerals) a pale green to purple mineral, found in igneous rocks and metamorphosed limestones. It is used in the manufacture of phosphorus, phosphates, and fertilizers. Composition: calcium fluorophosphate or calcium chlorophosphate. General formula: Ca5(PO4,CO3)3(F,OH,Cl). Crystal structure: hexagonal
[C19: from German Apatit, from Greek apatē deceit; from its misleading similarity to other minerals]

ap•a•tite

(ˈæp əˌtaɪt)

n.
a common mineral, calcium fluorophosphate, Ca5FP3O12, occurring in individual crystals and in masses and varying in color, formerly used in the manufacture of phosphate fertilizers.
[1795–1805; < Greek apát(ē) trickery, fraud, deceit + -ite1]

ap·a·tite

(ăp′ə-tīt′)
A usually green, transparent mineral consisting mainly of calcium phosphate. Apatite occurs as hexagonal crystals in igneous, metamorphic, and sedimentary rocks, and is used as a source of phosphate for making fertilizers. It is the mineral used to represent a hardness of 5 on the Mohs scale.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.apatite - a common complex mineral consisting of calcium fluoride phosphate or calcium chloride phosphate; a source of phosphorus
atomic number 15, P, phosphorus - a multivalent nonmetallic element of the nitrogen family that occurs commonly in inorganic phosphate rocks and as organic phosphates in all living cells; is highly reactive and occurs in several allotropic forms
atomic number 65, Tb, terbium - a metallic element of the rare earth group; used in lasers; occurs in apatite and monazite and xenotime and ytterbite
atomic number 69, thulium, Tm - a soft silvery metallic element of the rare earth group; isotope 170 emits X-rays and is used in small portable X-ray machines; it occurs in monazite and apatite and xenotime
mineral - solid homogeneous inorganic substances occurring in nature having a definite chemical composition
fluorapatite - a form of apatite in which fluorine predominates over chlorine
Translations
References in periodicals archive ?
The main factors enhancing the chromium sorption capacity of apatites were their magnesium content and triboactivation, which both increased apatite reactivity.
Burnstein et al performed x-ray diffraction and chemical analyses of six parotid gland stones and found that the three major crystalline components were apatite, magnesium-substituted whitlockite, and octacalcium phosphate.
With the first commercially applicable technology ever developed, Daikin will release in late August an air purifier that uses a filter having the substance called photocatalytic titanium apatite, the Osaka-based company said.
The 50-percent rule was an impediment, so we decided to accept half the payment in hard currency and to get the other half through a barter arrangement that involved apatite concentrate, a rock phosphate that we couldn't use.
Most of those discussions concerned the use of hydroxy apatite (HA), a mineral with a complex chemistry containing calcium phosphate.
Next year, 1992, Kemira Oy expects to set a new record for apatite production from Siilinjarvi, and is currently developing new mining areas.
129 thousand tonnes, Apatite & Phosphorite 165 thousand tonnes, Limestone 276 lakh tonnes, Magnesite 16 thousand tonnes and Diamond 5087 carat.
The mineral constituents are K-feldspar (microperthite), plagioclase, quartz, riebekite, hornblende, aegirine-augite, biotite, apatite, zircon, allanite, titanite, epidote, rutile and magnetite.
In January 2014, gem dealer Dudley Blauwet (Dudley Blauwet Gems, Louisville, Colorado, USA) obtained a 600 g parcel of rough apatite that his African supplier indicated was from Nhamatanda, Mozambique.