Mineralogy Database

Stoppaniite Mineral Data

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General Stoppaniite Information

Help on Chemical  Formula: Chemical Formula: (Fe,Al,Mg)4(Na,[ ])2[Be6Si12O36]•2(H2O)
Help on Composition: Composition: Molecular Weight = 1,190.23 gm
   Sodium      1.82 %  Na    2.45 % Na2O
   Magnesium   1.37 %  Mg    2.27 % MgO
   Beryllium   4.54 %  Be   12.61 % BeO
   Aluminum    1.75 %  Al    3.30 % Al2O3
   Iron       10.79 %  Fe   13.88 % FeO
   Silicon    28.32 %  Si   60.58 % SiO2
   Hydrogen    0.34 %  H     3.03 % H2O
   Oxygen     51.08 %  O
             ______        ______ 
             100.00 %       98.11 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Fe2+2.3Al0.77Mg0.67Na0.94Be6Si12O36•2(H2O)
Help on Environment: Environment: Miarolitic cavities of a volcanic ejectum. The Fe+++ dominant analog of beryl.
Help on IMA Status: IMA Status: Approved IMA 1996 (Dana # Added)
Help on Locality: Locality: Capranica (Viterbo), Vico volcanic complex, Latium, Italy. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the mineral collector Francesco Saverio Stoppani (1947-).
Help on Synonym: Synonym: ICSD 85697
  IMA1996-008
  PDF 83-1024