General Apatite-(CaOH)-M Information Chemical Formula: |
(Ca,Na)5[(P,S)O4]3(OH,Cl) |
Composition: |
Molecular Weight = 499.72 gm |
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Sodium 2.44 % Na 3.29 % Na2O |
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Strontium 0.26 % Sr 0.31 % SrO |
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Calcium 35.82 % Ca 50.12 % CaO |
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Lanthanum 0.06 % La 0.07 % La2O3 |
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Cerium 0.14 % Ce 0.16 % Ce2O3 |
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Silicon 0.09 % Si 0.19 % SiO2 |
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Phosphorus 14.50 % P 33.23 % P2O5 |
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Hydrogen 0.16 % H 1.39 % H2O |
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Sulfur 4.01 % S 9.01 % S2O5 |
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Chlorine 1.64 % Cl 1.64 % Cl |
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- %
Cl -0.37 % -O=Cl2 |
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Oxygen 40.88 % O |
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______ ______ |
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100.00 % 99.04 % = TOTAL OXIDE |
Empirical Formula: |
Ca4.46Na0.53Sr0.01La0.002Ce0.005P2.34S0.62Si0.01O12(OH)0.76Cl0.23 |
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 |
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IMA2004-006 |
| | Search for Apatite-(CaOH)-M Images
Images:
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| | 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 - PrismaticH-M Symbol (2/m) Space Group: P 21/b |
X Ray Diffraction: |
By Intensity(I/Io): 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: |
PEApatite-(CaOH)-M = 6.66 barns/electron |
U=PEApatite-(CaOH)-M x relectron= 20.72 barns/cc. Radioactivity: |
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GRapi = 207.56 (Gamma Ray American Petroleum Institute Units)
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 |
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(41.08)where (A)5 (XO4)3 Zq |
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(41.08.06)Clinomimetite Group |
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Strunz Class: |
08.BN.05 08 - PHOSPHATES, ARSENATES, VANADATES |
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08.B - Phosphates, etc. with Additional Anions, without H2O |
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08.BN -With only large cations, (OH, etc.):RO4 = 0.33:1 |
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| 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 Search for Apatite-(CaOH)-M using: Visit our Advertisers for Apatite-(CaOH)-M : A Bijoux Google Search for Apatite-(CaOH)-MAdam's Minerals Google Search for Apatite-(CaOH)-M Cape Minerals Google Search for Apatite-(CaOH)-M Dakota Matrix Minerals Google Search for Apatite-(CaOH)-M Excalibur Mineral Corp. Google Search for Apatite-(CaOH)-M Exceptional Minerals Google Search for Apatite-(CaOH)-M John Betts Fine Minerals Search for Apatite-(CaOH)-M McDougall Minerals Google Search for Apatite-(CaOH)-M Mineral News Website Link Rock and Mineral Shows Google Search for Apatite-(CaOH)-M Weinrich Minerals, Inc. Google Search for Apatite-(CaOH)-M Ask about Apatite-(CaOH)-M here : Print or Cut-and-Paste your Apatite-(CaOH)-M Specimen Label here :
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