Carbonate-hydroxylapatite Mineral Data

General Carbonate-hydroxylapatite Information

Chemical Formula:

Ca5(PO4,CO3)3(OH)

Composition:

Molecular Weight = 484.83 gm

Calcium 41.33 % Ca 57.83 % CaO

Phosphorus 15.97 % P 36.60 % P₂O₅

Hydrogen 0.21 % H 1.86 % H₂O

Carbon 1.24 % C 4.54 % CO₂

Oxygen 41.25 % O

______ ______

100.00 % 100.83 % = TOTAL OXIDE

Empirical Formula:

Ca₅(PO₄)_2.5(CO₃)_0.5(OH)

Environment:

Sedimentary and skarn rocks. Common as bones and teeth in mammals. Discredited by Mineralogical Record, v39:131.

IMA Status:

Discredited IMA 2008 - Valid Species (Pre-IMA) 1906

Locality:

Magnet Cove, Arkansas, USA. Link to MinDat.org Location Data.

Name Origin:

Named as the carbonate and hydroxyl end-member and from the Greek apatao - "I am misleading."

Name Pronunciation:

Carbonate-hydroxylapatite + Pronunciation

Synonym:

Apatite

Collophane

Dahllite

Carbonate-hydroxylapatite Image

Images:

Robertsite Carbonate-hydroxylapatite Apatite

Comments: Black crystals of Robertsite on pink carbonate-hydroxylapatite.
Location: Tip Top mine, Custer, Custer County, South Dakota, USA. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Carbonate-hydroxylapatite Crystallography

Axial Ratios:

a:c = 1:0.73107

Cell Dimensions:

a = 9.419, c = 6.886, Z = 2; V = 529.06 Den(Calc)= 3.04

Crystal System:

Hexagonal - Dipyramidal H-M Symbol (6/m) Space Group: P 6₃/m

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 2.717(1), 2.811(0.8), 2.261(0.35),

Forms:

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Forms: ( 1 1 1) ( 1 1 0) ( 0 1 0) ( 0 0 1)

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Physical Properties of Carbonate-hydroxylapatite

Color:

Colorless, White.

Diaphaneity:

Transparent

Habit:

Earthy - Dull, clay-like texture with no visible crystalline affinities, (e.g. howlite).

Habit:

Nodular - Tuberose forms having irregular protuberances over the surface.

Habit:

Pulverulent - Forms a loose, poorly-coherent powdery mass.

Hardness:

5 - Apatite

Luminescence:

Fluorescent and phosphorescent.

Luster:

Vitreous - Resinous

Optical Properties of Carbonate-hydroxylapatite

Dichroism (e):

colorless.

Dichroism (w):

colorless.

Gladstone-Dale:

CI calc= 0.015 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2013,KC= 0.2043
Ncalc = 1.62

Optical Data:

Uniaxial (-), e=1.598-1.619, w=1.603-1.628, bire=0.0050-0.0090.

Calculated Properties of Carbonate-hydroxylapatite

Electron Density:

Bulk Density (Electron Density)=3.03 gm/cc
note: Specific Gravity of Carbonate-hydroxylapatite =3.04 gm/cc.

Fermion Index:

Fermion Index = 0.0008925485
Boson Index = 0.9991074515

Photoelectric:

PE_{Carbonate-hydroxylapatite}= 5.85 barns/electron
U=PE_{Carbonate-hydroxylapatite} x rElectron Density= 17.71 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Carbonate-hydroxylapatite is Not Radioactive

Carbonate-hydroxylapatite Classification

Dana Class:

41.08.01.05 (41)Anhydrous Phosphates, etc. Containing Hydroxyl or Halogen

(41.08)where (A)5 (XO4)3 Zq

(41.08.01)Apatite Group

41.08.01.00 Apatite* Ca5(PO4)3(OH,F,Cl) P 6₃/m 6/m

41.08.01.01 Apatite-(CaF) Ca5(PO4)3F P 6₃/m 6/m

41.08.01.02 Apatite-(CaCl) Ca5(PO4)3Cl P 6₃/m 6/m

41.08.01.03 Apatite-(CaOH) Ca5(PO4)3(OH) P 6₃/m 6/m

41.08.01.04 Carbonate-fluorapatite? Ca5(PO4,CO3)3F P 6₃/m 6/m

41.08.01.05 Carbonate-hydroxylapatite? Ca5(PO4,CO3)3(OH) P 6₃/m 6/m

41.08.01.06 Belovite-(Ce) (Sr,Ce,Na,Ca)5(PO4)3(OH) P 3 3

41.08.01.06a Belovite-(La)! (Sr,La,Ce,Ca)5(PO4)3(F,OH) P 3 3

41.08.01.06b Kuannersuite-(Ce)! Ba6Na2REE2(PO4)6FCl P 3 3

41.08.01.07 Apatite-(SrOH) (Sr,Ca)5(PO4)3(F,OH) P 6₃/m 6/m

41.08.01.08 Fluorcaphite! (Ca,Sr,Ce,Na)5(PO4)3F P 6₃ 6

41.08.01.09 Deloneite-(Ce)! NaCa2SrCe(PO4)3F P 3 3

41.08.01.10 IMA2008-009! Sr5(PO4)3F P 6₃/m 6/m 2/m 2/m

41.08.01.11 IMA2008-068! Ca2Pb3(PO4)3F P 6₃/m 6/m

41.08.01.12 Phosphohedyphane! Ca2Pb3(PO4)3Cl P 6₃/m 6/m

Strunz Class:

08.BN.05 08 - PHOSPHATES, ARSENATES, VANADATES

08.B - Phosphates, etc. with Additional Anions, without H2O

08.BN -With only large cations, (OH, etc.):RO4 = 0.33:1

08.BN.05 Alforsite Ba5(PO4)3Cl P 6₃/m 6/m

08.BN.05 Apatite* Ca5(PO4)3(OH,F,Cl) P 6₃/m 6/m

08.BN.05 Belovite-(Ce) (Sr,Ce,Na,Ca)5(PO4)3(OH) P 3 3

08.BN.05 Belovite-(La)! (Sr,La,Ce,Ca)5(PO4)3(F,OH) P 3 3

08.BN.05 Fermorite (Ca,Sr)5(AsO4,PO4)3(OH) P 6₃/m 6/m

08.BN.05 Deloneite-(Ce)! NaCa2SrCe(PO4)3F P 3 3

08.BN.05 Johnbaumite Ca5(AsO4)3(OH) P 6₃/m,P 6₃ Hex

08.BN.05 Apatite-(CaOH) Ca5(PO4)3(OH) P 6₃/m 6/m

08.BN.05 Apatite-(CaCl) Ca5(PO4)3Cl P 6₃/m 6/m

08.BN.05 Carbonate-fluorapatite? Ca5(PO4,CO3)3F P 6₃/m 6/m

08.BN.05 Carbonate-hydroxylapatite? Ca5(PO4,CO3)3(OH) P 6₃/m 6/m

08.BN.05 Clinomimetite Pb5(AsO4)3Cl P 2₁/b 2/m

08.BN.05 Apatite-(CaF) Ca5(PO4)3F P 6₃/m 6/m

08.BN.05 Fluorcaphite! (Ca,Sr,Ce,Na)5(PO4)3F P 6₃ 6

08.BN.05 Hedyphane Ca2Pb3(AsO4)3Cl P 6₃/m 6/m

08.BN.05 Mimetite Pb5(AsO4)3Cl P 6₃/m 6/m

08.BN.05 Apatite-(SrOH) (Sr,Ca)5(PO4)3(F,OH) P 6₃/m 6/m

08.BN.05 Morelandite (Ba,Ca,Pb)5(AsO4,PO4)3Cl P 6₃/m,P 6₃ Hex

08.BN.05 Pyromorphite Pb5(PO4)3Cl P 6₃/m 6/m

08.BN.05 Vanadinite Pb5(VO4)3Cl P 6₃/m 6/m

08.BN.05 Apatite-(CaOH)-M! (Ca,Na)5[(P,S)O4]3(OH,Cl) P 2₁/b 2/m

08.BN.05 IMA2008-068! Ca2Pb3(PO4)3F P 6₃/m 6/m

08.BN.05 Svabite Ca5(AsO4)3F P 6₃/m 6/m

08.BN.05 Kuannersuite-(Ce)! Ba6Na2REE2(PO4)6FCl P 3 3

08.BN.05 Turneaureite Ca5[(As,P)O4]3Cl P 6₃/m 6/m

08.BN.05 Phosphohedyphane! Ca2Pb3(PO4)3Cl P 6₃/m 6/m

08.BN.05 IMA2008-009! Sr5(PO4)3F P 6₃/m 6/m 2/m 2/m

08.BN.05 Hydroxylpyromorphite! Pb5(PO4)3OH P 6₃/m 6/m

Other Carbonate-hydroxylapatite Information

References:

NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

See Also:

Links to other databases for Carbonate-hydroxylapatite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - MinDAT
7 - Mineralienatlas (Deutsch)
8 - Online Mineral Museum
9 - QUT Mineral Atlas
10 - Ruff.Info
11 - Scandinavian mineral gallery

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Carbonate-hydroxylapatite

Ca5(PO4,CO3)3(OH)
Dana No: 41.08.01.05 Strunz No: 08.BN.05
Locality:

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