Mineralogy Database

Gramaccioliite-(Y) Mineral Data

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General Gramaccioliite-(Y) Information

Help on Chemical Formula: Chemical Formula: (Pb,Sr)(Y,Mn)Fe2(Ti,Fe)18O38
Help on Composition: Composition: Molecular Weight = 1,822.46 gm
   Barium      0.15 %  Ba    0.17 % BaO
   Strontium   1.30 %  Sr    1.54 % SrO
   Calcium     0.09 %  Ca    0.12 % CaO
   Lanthanum   0.15 %  La    0.18 % La2O3
   Cerium      0.62 %  Ce    0.72 % Ce2O3
   Yttrium     2.39 %  Y     3.04 % Y2O3
   Uranium     0.26 %  U     0.29 % U2O3
   Titanium   35.55 %  Ti   59.30 % TiO2
   Manganese   1.12 %  Mn    1.44 % MnO
   Niobium     0.20 %  Nb    0.29 % Nb2O5
   Vanadium    0.11 %  V     0.20 % V2O5
   Zinc        0.79 %  Zn    0.98 % ZnO
   Iron       16.82 %  Fe   21.64 % FeO
   Lead        6.94 %  Pb    7.47 % PbO
   Neodymium   0.16 %  Nd    0.18 % Nd2O3
   Oxygen     33.36 %  O
             ______        ______ 
             100.00 %       97.56 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Pb0.61Sr0.27Ba0.02U0.02Y0.49Mn2+0.37Ce0.08Ca0.04Nd0.02La0.02Ti13.53Fe2+5.49Zn0.22 V5+0.04Nb0.04O38
Help on Environment: Environment: Hydrothermal quartz veins in a biotitic gneiss. (crichtonite group; structure)
Help on IMA Status: IMA Status: Approved IMA 2003 (Dana # Added)
Help on Locality: Locality: Sambuco, Stura Valley, Piedmont, Italy. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Prof. Carlo M. Gramaccioli (1935-) of the University of Milano, Italy.
Help on Synonym: Synonym: Davidite-(Y)
  IMA2001-034