Mineralogy Database

Hornesite Mineral Data

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General Hornesite Information

Help on Chemical  Formula: Chemical Formula: Mg3(AsO4)2•8(H2O)
Help on Composition: Composition: Molecular Weight = 494.88 gm
   Magnesium  14.73 %  Mg   24.43 % MgO
   Arsenic    30.28 %  As   46.44 % As2O5
   Hydrogen    3.26 %  H    29.12 % H2O
   Oxygen     51.73 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Mg3(AsO4)2•8(H2O)
Help on Environment: Environment: Lmestone blocks, thermally metamorphosed, in a volcanic tuff (Fiano, Italy).
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1860
Help on Locality: Locality: Banat, Hungary [probably Oraviļæ½ta or Csiklova, Romania]. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Moritz Hornes (1815-1868), Curator of the Imperial Cabinet, Vienna, Austria.
Help on Name Pronunciation: Name Pronunciation: Hornesite + Pronunciation Say HORNESITE
Help on Synonym: Synonym: Hoernesite