Carbonate-hydroxylapatite Mineral Data

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 % 100.82 % = TOTAL OXIDE

Empirical Formula:

Ca₅(PO₄)_2.5(CO₃)_0.5(OH)

Environment:

Sedimentary and skarn rocks. Common as bones and teeth in mammals.

IMA Status:

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."

Synonym:

Apatite

Collophane

Dahllite

Carbonate-hydroxylapatite Image

Images:

Click Here for Larger Carbonate-hydroxylapatite Image

Carbonate-hydroxylapatite Robertsite 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 - DipyramidalH-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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Crystal Structure:

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Fleet M E , Liu X , King P L , American Mineralogist , 89 (2004) p.1422-1432, Accommodation of the carbonate ion in apatite: An FTIR and X-ray structure study, of crystals synthesized at 2-4 GPa, Sample: xt371

View Additional jPOWD Structure files for Carbonate-hydroxylapatite
[1] [2] [3] [4] [5]

Physical Properties of Carbonate-hydroxylapatite

Color:

Colorless, White.

Diaphaniety:

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:

Phosphorescent fluorescent.

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

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:

r_electron=3.03 gm/cc
note: r_{Carbonate-hydroxylapatite}=3.04 gm/cc.

Fermion Index

Fermion Index = 0.00089
Boson Index = 0.99911

Photoelectric:

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

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Carbonate-hydroxylapatite is Not Radioactive

Carbonate-hydroxylapatite Classification

Dana Class:

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

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

(41.8.1)Dana Group

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

41.8.1.1 Fluorapatite Ca5(PO4)3F P 6₃/m 6/m

41.8.1.2 Chlorapatite Ca5(PO4)3Cl P 6₃/m 6/m

41.8.1.3 Hydroxylapatite Ca5(PO4)3(OH) P 6₃/m 6/m

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

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

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

41.8.1.6a Belovite-(La)! (Sr,La,Ce,Ca)5(PO4)3(F,OH) P 3 3

41.8.1.6b Kuannersuite-(Ce)! Ba6Na2REE2(PO4)6FCl P 3 3

41.8.1.7 Strontium-apatite (Sr,Ca)5(PO4)3(F,OH) P 6₃/m 6/m

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

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

Strunz Class:

VII/B.39-40 VII - Phosphates, Arsenates and Vanadates

VII/B - Waterfree phosphates with unfamiliar anions F, Cl, O, OH. cations of medium and big size: Mg, Cu, Zn, and Ca, Na, K, Ba, Pb

VII/B.39 - Apatite - Pyromorphite group

VII/B.39-10 Fluorapatite Ca5(PO4)3F P 6₃/m 6/m

VII/B.39-20 Chlorapatite Ca5(PO4)3Cl P 6₃/m 6/m

VII/B.39-30 Hydroxylapatite Ca5(PO4)3(OH) P 6₃/m 6/m

VII/B.39-40 Carbonate-hydroxylapatite Ca5(PO4,CO3)3(OH) P 6₃/m 6/m

VII/B.39-50 Carbonate-fluorapatite Ca5(PO4,CO3)3F P 6₃/m 6/m

VII/B.39-60 Svabite Ca5(AsO4)3F P 6₃/m 6/m

VII/B.39-70 Turneaureite Ca5[(As,P)O4]3Cl P 6₃/m 6/m

VII/B.39-80 Johnbaumite Ca5(AsO4)3(OH) P 6₃/m,P 6₃ Hex

VII/B.39-90 Fermorite (Ca,Sr)5(AsO4,PO4)3(OH) P 6₃/m 6/m

VII/B.39-95 Fluorcaphite! (Ca,Sr,Ce,Na)5(PO4)3F P 6₃ 6

VII/B.39-100 Strontium-apatite (Sr,Ca)5(PO4)3(F,OH) P 6₃/m 6/m

VII/B.39-110 Belovite-(Ce) (Sr,Ce,Na,Ca)5(PO4)3(OH) P 3 3

VII/B.39-115 Belovite-(La)! (Sr,La,Ce,Ca)5(PO4)3(F,OH) P 3 3

VII/B.39-117 Kuannersuite-(Ce)! Ba6Na2REE2(PO4)6FCl P 3 3

VII/B.39-120 Alforsite Ba5(PO4)3Cl P 6₃/m 6/m

VII/B.39-130 Morelandite (Ba,Ca,Pb)5(AsO4,PO4)3Cl P 6₃/m,P 6₃ Hex

VII/B.39-140 Hedyphane Ca2Pb3(AsO4)3Cl P 6₃/m 6/m

VII/B.39-150 Pyromorphite Pb5(PO4)3Cl P 6₃/m 6/m

VII/B.39-160 Mimetite Pb5(AsO4)3Cl P 6₃/m 6/m

VII/B.39-165 Clinomimetite Pb5(AsO4)3Cl P 2₁/b 2/m

VII/B.39-170 Vanadinite Pb5(VO4)3Cl 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 - Crocoite.com Mineral Locations 4 -Google Images 5 -Google Scholar 6 -MinDAT 7 -MinMax(Deutsch) 8 -MinMax(English) 9 -Mineralienatlas (Deutsch) 10 -QUT Mineral Atlas 11 - Scandinavian mineral gallery

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Carbonate-hydroxylapatite

Ca5(PO4,CO3)3(OH)
Dana No: 41.8.1.5 Strunz No: VII/B.39-40
Locality:

Notes: