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Lyonsite Mineral Data
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General Lyonsite Information
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 Chemical Formula: |
Cu++3Fe+++4(VO4)6 |
| Composition: |
Molecular Weight = 1,103.66 gm |
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Vanadium 27.69 % V 49.44 % V2O5 |
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Iron 20.24 % Fe 28.94 % Fe2O3 |
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Copper 17.27 % Cu 21.62 % CuO |
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Oxygen 34.79 % O |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
| Empirical Formula: |
Cu3Fe3+4(VO4)6 |
| Environment: |
I summit crator fumaroles, as a sublimate formed at <=800 Deg. C. |
| IMA Status: |
Approved IMA 1987 |
| Locality: |
Izalco volcano, El Salvador. Link to MinDat.org Location Data. |
| Name Origin: |
Named for John Bartholomew Lyons (1916-1998), Professor of Mineralogy, Dartmouth College, Hanover, New Hampshire, USA. |
| Name Pronunciation: |
Lyonsite  |
| Synonym: |
ICSD 202361 |
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PDF 40-1456 |
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