Mineralogy Database

Larisaite Mineral Data

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General Larisaite Information

Help on Chemical  Formula: Chemical Formula: Na(H3O)(UO2)3(SeO3)2O2•4(H2O)
Help on Composition: Composition: Molecular Weight = 1,235.71 gm
   Potassium   0.57 %  K     0.69 % K2O
   Sodium      1.51 %  Na    2.03 % Na2O
   Calcium     0.16 %  Ca    0.23 % CaO
   Uranium    59.52 %  U    67.52 % UO2
   Hydrogen    0.85 %  H     7.57 % H2O
   Selenium   12.78 %  Se   17.96 % SeO2
   Oxygen     24.61 %  O
             ______        ______ 
             100.00 %       96.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Na0.81K0.18Ca0.05(H3O)0.73(UO2)3.09O2(SeO3)2�4.1(H2O)
Help on Environment: Environment: In sedimentary rock. Related to haynesite; structure determined
Help on IMA Status: IMA Status: Approved IMA 2004 (Dana # Added)
Help on Locality: Locality: Repete mine, near Blanding, San Juan County, Utah, USA. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Larisa Nikolaevna Belova (1923-1998), Russian mineralogist and crystallographer.
Help on Synonym: Synonym: IMA2002-061