Mineralogy Database

Stornesite-(Y) Mineral Data

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General Stornesite-(Y) Information

Help on Chemical  Formula: Chemical Formula: (Y, Ca)[ ]2Na6(Ca,Na)8(Mg,Fe)43(PO4)36
Help on Composition: Composition: Molecular Weight = 5,318.15 gm
   Sodium       3.76 %  Na    5.06 % Na2O
   Strontium    0.02 %  Sr    0.02 % SrO
   Calcium      4.07 %  Ca    5.69 % CaO
   Yttrium      1.14 %  Y     1.44 % Y2O3
   Ytterbium    0.20 %  Yb    0.22 % Yb2O3
   Magnesium   14.04 %  Mg   23.27 % MgO
   Uranium      0.01 %  U     0.02 % UO2
   Manganese    0.19 %  Mn    0.24 % MnO
   Iron        12.14 %  Fe   15.62 % FeO
   Silicon      0.01 %  Si    0.02 % SiO2
   Phosphorus  21.10 %  P    48.34 % P2O5
   Sulfur       0.02 %  S     0.06 % SO3
   Oxygen      43.32 %  O
              ______        ______ 
              100.00 %      100.01 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Y0.68Yb0.06U0.003Na8.69Ca5.4Sr0.01Mg30.71Fe2+11.56Mn2+0.18Si0.02S0.04P36.22O144
Help on Environment: Environment: Found as inclusions in fluorapatite nodules in two paragneiss specimens. Y-dominant analog of the meteoritic mineral chladniite. Fillowite group.
Help on IMA Status: IMA Status: Approved IMA 2005 (Dana # Added)
Help on Locality: Locality: Johnston Fjord, Stornes Peninsula, Prydz Bay, East Antarctica Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after the locality.
Help on Synonym: Synonym: IMA2005-040