Carbonate-fluorapatite Mineral Data

General Carbonate-fluorapatite Information

Chemical Formula:

Ca5(PO4,CO3)3F

Composition:

Molecular Weight = 486.82 gm

Calcium 41.16 % Ca 57.60 % CaO

Phosphorus 15.91 % P 36.45 % P₂O₅

Carbon 1.23 % C 4.52 % CO₂

Oxygen 37.79 % O

Fluorine 3.90 % F 3.90 % F

- % F -1.64 % -O=F₂

______ ______

100.00 % 100.82 % = TOTAL OXIDE

Empirical Formula:

Ca₅(PO₄)_2.5(CO₃)_0.5F

Environment:

Sedimentary and skarn rocks. Discredited by Mineralogical Record, v39:131

IMA Status:

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

Locality:

Wheal Franco, Devonshire, England. Link to MinDat.org Location Data.

Name Origin:

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

Name Pronunciation:

Carbonate-fluorapatite + Pronunciation

Synonym:

Apatite

Collophane

Dehrnite

Francolite

ICSD 71854

Lewistonite

PDF 31-267

Carbonate-fluorapatite Image

Images:

Carbonate-fluorapatite Apatite

Comments: Pink, colliform carbonate-fluorapatite on matrix.
Location: Tip Top mine, Custer, Custer County, South Dakota, USA. Scale: Size Not Given.
© Lou Perloff / Photo Atlas of Minerals

Carbonate-fluorapatite Crystallography

Axial Ratios:

a:c = 1:0.73689

Cell Dimensions:

a = 9.346, c = 6.887, Z = 2; V = 520.97 Den(Calc)= 3.10

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): 2.692(1), 2.79(0.55), 2.24(0.45),

Forms:

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

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Physical Properties of Carbonate-fluorapatite

Color:

Colorless, Whitish.

Density:

3.12

Diaphaneity:

Transparent to Translucent

Habit:

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

Habit:

Massive - Uniformly indistinguishable crystals forming large masses.

Habit:

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

Hardness:

5 - Apatite

Luster:

Vitreous - Resinous

Streak:

white

Optical Properties of Carbonate-fluorapatite

Gladstone-Dale:

CI meas= -0.042 (Good) - where the CI = (1-KPDmeas/KC)
CI calc= -0.049 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2087,KPDmeas= 0.2074,KC= 0.199
Ncalc = 1.62

Optical Data:

Uniaxial (-), e=1.6155, w=1.6785, bire=0.0630.

Calculated Properties of Carbonate-fluorapatite

Electron Density:

Bulk Density (Electron Density)=3.10 gm/cc
note: Specific Gravity of Carbonate-fluorapatite =3.12 gm/cc.

Fermion Index:

Fermion Index = 0.0008728122
Boson Index = 0.9991271878

Photoelectric:

PE_{Carbonate-fluorapatite}= 5.86 barns/electron
U=PE_{Carbonate-fluorapatite} x rElectron Density= 18.14 barns/cc.

Radioactivity:

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

Carbonate-fluorapatite Classification

Dana Class:

41.08.01.04 (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-fluorapatite 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-fluorapatite :
1 - Alkali-Nuts(English)
2 - Alkali-Nuts(Francais)
3 - Am. Min. Crystal Structure Database
4 - Athena
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - MinDAT
9 - Mineralienatlas (Deutsch)
10 - Online Mineral Museum
11 - QUT Mineral Atlas
12 - Ruff.Info
13 - WWW-MINCRYST

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Carbonate-fluorapatite

Ca5(PO4,CO3)3F
Dana No: 41.08.01.04 Strunz No: 08.BN.05
Locality:

Notes:

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