Carbonate-fluorapatite Mineral Data

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.

IMA Status:

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."

Synonym:

Apatite

Collophane

Dehrnite

Francolite

ICSD 71854

Lewistonite

PDF 31-267

Carbonate-fluorapatite Image

Images:

Click Here for Larger Carbonate-fluorapatite Image

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 - DipyramidalH-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),

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Crystal Structure:

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Perdikatsis B , Materials Science Forum , 79 (1991) p.809-814, X-ray powder diffraction study of francolite by the Rietveld method, Locality: Epirus, Greece, Sample: T = 26 C, Note: Reported structure does not reproduce reported formula or bondlengths

View Additional jPOWD Structure files for Carbonate-fluorapatite
[1] [2] [3]

Physical Properties of Carbonate-fluorapatite

Color:

Colorless, Whitish.

Density:

3.12

Diaphaniety:

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

Optical Data:

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

Calculated Properties of Carbonate-fluorapatite

Electron Density:

r_electron=3.10 gm/cc
note: r_{Carbonate-fluorapatite}=3.12 gm/cc.

Fermion Index

Fermion Index = 0.00087
Boson Index = 0.99913

Photoelectric:

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

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Carbonate-fluorapatite is Not Radioactive

Carbonate-fluorapatite Classification

Dana Class:

41.8.1.4 (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.39-50 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-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 - Crocoite.com Mineral Locations 6 -Google Images 7 -Google Scholar 8 -MinDAT 9 -MinMax(Deutsch) 10 -MinMax(English) 11 -Mineralienatlas (Deutsch) 12 -QUT Mineral Atlas 13 - WWW-MINCRYST

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Carbonate-fluorapatite

Ca5(PO4,CO3)3F
Dana No: 41.8.1.4 Strunz No: VII/B.39-50
Locality:

Notes: