Mineralogy Database

Thaumasite Mineral Data

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General Thaumasite Information

Help on Chemical  Formula: Chemical Formula: Ca3Si(CO3)(SO4)(OH)6•12(H2O)
Help on Composition: Composition: Molecular Weight = 622.62 gm
   Calcium   19.31 %  Ca   27.02 % CaO
   Silicon    4.51 %  Si    9.65 % SiO2
   Hydrogen   4.86 %  H    43.40 % H2O
   Carbon     1.93 %  C     7.07 % CO2
   Sulfur     5.15 %  S    12.86 % SO3
   Oxygen    64.24 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca3Si(CO3)(SO4)(OH)6•12(H2O)
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1878
Help on Locality: Locality: Bjelke mine, near Areskutan, Jamtland, Sweden. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: From the Greek thaumasion - "surprising" in allusion to the chemical composition.
Help on Name Pronunciation: Name Pronunciation: Thaumasite + Pronunciation Say THAUMASITE
Help on Synonym: Synonym: ICSD 31247
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