Mineralogy Database

Rosemaryite Mineral Data

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General Rosemaryite Information

Help on Chemical Formula: Chemical Formula: (Na,Ca,Mn++)(Mn++,Fe++)(Fe+++,Fe++,Mg)Al(PO4)3
Help on Composition: Composition: Molecular Weight = 441.80 gm
   Sodium       3.12 %  Na    4.21 % Na2O
   Calcium      1.81 %  Ca    2.54 % CaO
   Magnesium    0.55 %  Mg    0.91 % MgO
   Manganese   11.19 %  Mn   14.45 % MnO
   Aluminum     3.66 %  Al    6.92 % Al2O3
   Iron        15.17 %  Fe    4.88 % FeO / 16.27 % Fe2O3
   Phosphorus  21.03 %  P    48.19 % P2O5
   Oxygen      43.46 %  O
              ______        ______ 
              100.00 %       98.37 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Na0.6Mn2+0.2Ca0.2Mn2+0.7Fe2+0.3Fe3+0.9Mg0.1Al0.6(PO4)3
Help on Environment: Environment: In a zoned, complex granite pegmatite.
Help on IMA Status: IMA Status: Approved IMA 1978
Help on Locality: Locality: Rock Ridge pegmatite, near Custer, Custer County, South Dakota, USA. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for F. Rosemay Wyllie wife of Professor Peter J. Wyllie, namesake of wyllieite.
Help on Name Pronunciation: Name Pronunciation: Rosemaryite + Pronunciation Say ROSEMARYITE