Mineralogy Database

Arsenoclasite Mineral Data

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General Arsenoclasite Information

Help on Chemical  Formula: Chemical Formula: Mn5(AsO4)2(OH)4
Help on Composition: Composition: Molecular Weight = 620.56 gm
   Manganese  44.27 %  Mn   57.16 % MnO
   Arsenic    24.15 %  As   37.04 % As2O5
   Hydrogen    0.65 %  H     5.81 % H2O
   Oxygen     30.94 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Mn2+5(AsO4)2(OH)4
Help on Environment: Environment: A rare fissure mineral in a metamorphosed Fe-Mn orebody (Langban, Sweden); in a sedimentary Fe-Mn deposit (Iron Monarch quarry, Australia).
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1931
Help on Locality: Locality: At Langban, Varmland, Sweden. Crystallized from the Iron Monarch quarry, Iron Knob, South Australia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named from "arsenic" and the Greek for "breaking," for its excellent cleavage.
Help on Name Pronunciation: Name Pronunciation: Arsenoclasite + Pronunciation Say ARSENOCLASITE
Help on Synonym: Synonym: ICSD 15210
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