Mineralogy Database

Lyonsite Mineral Data

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General Lyonsite Information

Help on Chemical  Formula: Chemical Formula: Cu++3Fe+++4(VO4)6
Help on Composition: Composition: Molecular Weight = 1,103.66 gm
   Vanadium  27.69 %  V    49.44 % V2O5
   Iron      20.24 %  Fe   28.94 % Fe2O3
   Copper    17.27 %  Cu   21.62 % CuO
   Oxygen    34.79 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Cu3Fe3+4(VO4)6
Help on Environment: Environment: I summit crator fumaroles, as a sublimate formed at <=800 Deg. C.
Help on IMA Status: IMA Status: Approved IMA 1987
Help on Locality: Locality: Izalco volcano, El Salvador. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for John Bartholomew Lyons (1916-1998), Professor of Mineralogy, Dartmouth College, Hanover, New Hampshire, USA.
Help on Name Pronunciation: Name Pronunciation: Lyonsite Say LYONSITE
Help on Synonym: Synonym: ICSD 202361
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