Mineralogy Database

Apatite-(CaOH)-M Mineral Data

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General Apatite-(CaOH)-M Information

Help on Chemical Formula: Chemical Formula: (Ca,Na)5[(P,S)O4]3(OH,Cl)
Help on Composition: 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
Help on Empirical Formula: Empirical Formula: Ca4.46Na0.53Sr0.01La0.002Ce0.005P2.34S0.62Si0.01O12(OH)0.76Cl0.23
Help on Environment: Environment: Found in an altered leucogabbro in a unit of the Seagull ultramafic intrusion. Apatite group.
Help on IMA Status: IMA Status: Approved IMA 2004 (Dana # Added)
Help on Locality: 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.
Help on Name Origin: Name Origin: Named as the monoclinic analog of hyroxylapatite.
Help on Name Pronunciation: Name Pronunciation: Apatite-(CaOH)-M Say APATITE-(CAOH)-M
Help on Synonym: Synonym: Clinohydroxylapatite - Renamed to Apatite-(CaOH)-M by Mineralogical Record, v39 (2008), p 131
  IMA2004-006