Apatite-(CaOH)-M Mineral Data

General Apatite-(CaOH)-M Information

Chemical Formula:

(Ca,Na)5[(P,S)O4]3(OH,Cl)

Composition:

Molecular Weight = 499.72 gm

Sodium 2.44 % Na 3.29 % Na₂O

Strontium 0.26 % Sr 0.31 % SrO

Calcium 35.82 % Ca 50.12 % CaO

Lanthanum 0.06 % La 0.07 % La₂O₃

Cerium 0.14 % Ce 0.16 % Ce₂O₃

Silicon 0.09 % Si 0.19 % SiO₂

Phosphorus 14.50 % P 33.23 % P₂O₅

Hydrogen 0.16 % H 1.39 % H₂O

Sulfur 4.01 % S 9.01 % S₂O₅

Chlorine 1.64 % Cl 1.64 % Cl

- % Cl -0.37 % -O=Cl₂

Oxygen 40.88 % O

______ ______

100.00 % 99.04 % = TOTAL OXIDE

Empirical Formula:

Ca_4.46Na_0.53Sr_0.01La_0.002Ce_0.005P_2.34S_0.62Si_0.01O₁₂(OH)_0.76Cl_0.23

Environment:

Found in an altered leucogabbro in a unit of the Seagull ultramafic intrusion. Apatite group.

IMA Status:

Approved IMA 2004 (Dana # Added)

Locality:

7.5 km SSW of the Wolf Mountain and 50 km W of the town of Nipigon, Thunder Bay district, northwestern Ontario, Canada. Link to MinDat.org Location Data.

Name Origin:

Named as the monoclinic analog of hyroxylapatite.

Name Pronunciation:

Apatite-(CaOH)-M

Synonym:

Clinohydroxylapatite - Renamed to Apatite-(CaOH)-M by Mineralogical Record, v39 (2008), p 131

IMA2004-006

Apatite-(CaOH)-M Crystallography

Axial Ratios:

a:b:c =0.5009:1:0.3648

Cell Dimensions:

a = 9.445, b = 18.853, c = 6.8783, Z = 4; beta = 120° V = 1,060.70 Den(Calc)= 3.13

Crystal System:

Monoclinic - Prismatic H-M Symbol (2/m) Space Group: P 2₁/b

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

By Intensity(I/I_o): 2.267(1)(320 ), 2.724(0.79)(060 ), 1.784(0.7)(420 ),2.817(0.66)(161), 1.841(0.58)(223 ), 2.781(0.41)(142), 1.945(0.39)(242 ), 2.63(0.24)(

Physical Properties of Apatite-(CaOH)-M

Cleavage:

None

Color:

White.

Diaphaneity:

Transparent

Fracture:

Brittle - Splintery - Brittle fracture leaving splintery fragments.

Habit:

Spherical - Spherical, rounded aggregates.

Hardness:

5 - Apatite

Luster:

Earthy (Dull)

Streak:

whie

Optical Properties of Apatite-(CaOH)-M

Optical Data:

NCalc= 1.57 - from Gladstone-Dale relationship (KC = 0.1834) where Ncalc=Dcalc*KC+1

Calculated Properties of Apatite-(CaOH)-M

Electron Density:

Bulk Density (Electron Density)=3.11 gm/cc
note: Specific Gravity of Apatite-(CaOH)-M =3.13 gm/cc.

Fermion Index:

Fermion Index = 0.0012073963
Boson Index = 0.9987926037

Photoelectric:

PE_{Apatite-(CaOH)-M}= 6.66 barns/electron
U=PE_{Apatite-(CaOH)-M} x r_electron= 20.72 barns/cc.

Radioactivity:

GRapi = 207.56 (Gamma Ray American Petroleum Institute Units)
Concentration of Apatite-(CaOH)-M per GRapi unit = 0.48 (%)

Estimated Radioactivity from Apatite-(CaOH)-M - barely detectable

Apatite-(CaOH)-M Classification

Dana Class:

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

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

(41.08.06)Clinomimetite Group

41.08.06.01 Clinomimetite Pb5(AsO4)3Cl P 2₁/b 2/m

41.08.06.02 Apatite-(CaOH)-M! (Ca,Na)5[(P,S)O4]3(OH,Cl) P 2₁/b 2/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 Apatite-(CaOH)-M Information

References:

NAME( AmMin, v91, p1453) PHYS. PROP.(AmMin, v91, p1453) OPTIC PROP.(AmMin, v91, p1453)

See Also:

Links to other databases for Apatite-(CaOH)-M :
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

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Apatite-(CaOH)-M

(Ca,Na)5[(P,S)O4]3(OH,Cl)
Dana No: 41.08.06.02 Strunz No: 08.BN.05
Locality:

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