Mineralogy Database

Dachiardite-Na Mineral Data

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General Dachiardite-Na Information

Help on Chemical  Formula: Chemical Formula: (Na2,Ca,K2)4Al4Si20O48•13(H2O)
Help on Composition: Composition: Molecular Weight = 1,808.84 gm
   Potassium   1.53 %  K     1.85 % K2O
   Barium      0.08 %  Ba    0.08 % BaO
   Sodium      3.29 %  Na    4.44 % Na2O
   Calcium     1.17 %  Ca    1.64 % CaO
   Magnesium   0.05 %  Mg    0.09 % MgO
   Aluminum    7.25 %  Al   13.70 % Al2O3
   Iron        0.34 %  Fe    0.49 % Fe2O3
   Silicon    30.45 %  Si   65.14 % SiO2
   Hydrogen    1.50 %  H    13.38 % H2O
   Oxygen     54.34 %  O
             ______        ______ 
             100.00 %      100.80 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Na2.59Ca0.53K0.71Mg0.04Ba0.01Al4.86Fe3+0.11Si19.61O48�13.43(H2O)
Help on Environment: Environment: Secondary mineral hydrothermally altered from calc-alkalic to alkalic volcanic and plutonic rocks.
Help on IMA Status: IMA Status: Approved IMA 1977
Help on Locality: Locality: From La Pallaccia and Orli di Fassa, Alpe di Siusi, Trentoin-Alto Adige, Italy. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for its relationship to dachiardite and the sodium content.
Help on Name Pronunciation: Name Pronunciation: Dachiardite-Na + Pronunciation Say DACHIARDITE-NA
Help on Synonym: Synonym: Achiardite
  Sodiumdachiardite - renamed Dachiardite-Na
  Svetlozarite - twinned