Mineralogy Database

Grenmarite Mineral Data

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General Grenmarite Information

Help on Chemical  Formula: Chemical Formula: (Zr,Mn)2(Zr,Ti)(Mn,Na)(Na,Ca)4(Si2O7)2(O,F)4
Help on Composition: Composition: Molecular Weight = 780.16 gm
   Sodium     11.82 %  Na   15.93 % Na2O
   Calcium     1.34 %  Ca    1.87 % CaO
   Yttrium     0.23 %  Y     0.29 % Y2O3
   Zirconium  24.20 %  Zr   32.69 % ZrO2
   Titanium    2.76 %  Ti    4.61 % TiO2
   Manganese   6.62 %  Mn    4.36 % MnO /  4.65 % Mn2O3
   Iron        1.65 %  Fe    2.12 % FeO
   Silicon    14.40 %  Si   30.81 % SiO2
   Oxygen     31.58 %  O
   Fluorine    5.41 %  F     5.41 % F
                -   %   F    -2.28 % -O=F2    
             ______        ______ 
             100.00 %      100.46 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Zr1.52Mn3+0.46Y0.02Zr0.55Ti0.45Mn2+0.48Na0.29Fe2+0.23Na3.72Ca0.26Si4O15.4F2.22
Help on Environment: Environment: Syenite pegmatite. Isostructural with seidozerite.
Help on IMA Status: IMA Status: Approved IMA 2004 (Dana # Added)
Help on Locality: Locality: Eastern side of the island Vesle Ar´┐Żya in the Langesundsfjord district, Norway. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: The name is after Grenmar, the Norse name of the Langesundsfjord.
Help on Synonym: Synonym: IMA2003-024