Mineralogy Database

Tumchaite Mineral Data

Search Webmineral :
  
Advertisment

General Tumchaite Information

Help on Chemical  Formula: Chemical Formula: Na2(Zr,Sn)Si4O11•2(H2O)
Help on Composition: Composition: Molecular Weight = 462.51 gm
   Sodium      9.94 %  Na   13.40 % Na2O
   Zirconium  14.79 %  Zr   19.98 % ZrO2
   Silicon    24.29 %  Si   51.96 % SiO2
   Tin         5.13 %  Sn    6.52 % SnO2
   Hydrogen    0.87 %  H     7.79 % H2O
   Oxygen     44.97 %  O
             ______        ______ 
             100.00 %       99.65 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Na2Zr0.75Sn0.2Si4O11•2(H2O)
Help on Environment: Environment: From a core sample of rocks formed by the hydrothermal alteration of dolomite-calcite carbonatites. Zr-analogue of penkvilksite-1M
Help on IMA Status: IMA Status: Approved IMA 1999 (Dana # Added)
Help on Locality: Locality: Vuoriyarvi alkali-ultrabasic massif, North Karelia on the north shore of the Vuoriyarvi lake, Murmansk Region, Russia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: The mineral is named for the river Tumcha near Vuoriyarvi massif.
Help on Synonym: Synonym: ICSD 89740
  IMA1999-041