Mineralogy Database

Brassite Mineral Data

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General Brassite Information

Help on Chemical  Formula: Chemical Formula: Mg(AsO3OH)•4(H2O)
Help on Composition: Composition: Molecular Weight = 236.29 gm
   Magnesium  10.29 %  Mg   17.06 % MgO
   Arsenic    31.71 %  As   48.63 % As2O5
   Hydrogen    3.84 %  H    34.31 % H2O
   Oxygen     54.17 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Mg(AsO3OH)•4(H2O)
Help on Environment: Environment: A rare reaction product of arsenic-rich solutions with Ca-Mg carbonates.
Help on IMA Status: IMA Status: Approved IMA 1973
Help on Locality: Locality: From Jachymov (Joachimsthal), Czech Republic. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Honoring Rejane Brasse, who first synthesized the compound.
Help on Name Pronunciation: Name Pronunciation: Brassite Say BRASSITE
Help on Synonym: Synonym: ICSD 78
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