Mineralogy Database

Ruifrancoite Mineral Data

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General Ruifrancoite Information

Help on Chemical Formula: Chemical Formula: Ca2([ ],Mn)2(Fe+++,Mn,Mg)4Be4(PO4)6(OH)4•6H2O
Help on Composition: Composition: Molecular Weight = 1,075.85 gm
   Calcium      7.04 %  Ca    9.85 % CaO
   Magnesium    1.94 %  Mg    3.22 % MgO
   Manganese    6.28 %  Mn    8.11 % MnO
   Beryllium    3.35 %  Be    9.30 % BeO
   Aluminum     0.45 %  Al    0.85 % Al2O3
   Iron        11.84 %  Fe    3.94 % FeO / 12.54 % Fe2O3
   Phosphorus  17.27 %  P    39.58 % P2O5
   Hydrogen     1.41 %  H    12.60 % H2O
   Oxygen      50.41 %  O
              ______        ______ 
              100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca1.89Mn2+0.55Fe3+1.69Mg0.86Mn2+0.68Fe2+0.59Al0.18Be4(PO4)6(OH)4.75(H2O)1.25�3.9(H2O)
Help on Environment: Environment: Occurs as a late vug-filling product in a zoned, LCT-type granitic pegmatite. Roscherite group.
Help on IMA Status: IMA Status: Approved IMA 2005 (Dana # Added)
Help on Locality: Locality: Sapucaia mine, Minas Gerais, Brazil. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Rui Ribeiro Franco (b. 1916), in recognition of his outstanding contributions to Brazilian mineralogy and geology.
Help on Synonym: Synonym: IMA2005-061a