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Lafossaite Mineral Data
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General Lafossaite Information
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 Chemical Formula: |
Tl(Cl,Br) |
| Composition: |
Molecular Weight = 252.93 gm |
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Thallium 82.99 % Tl 86.24 % Tl2O |
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Bromine 6.07 % Br 6.07 % Br |
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- %
Br -0.61 % -O=Br2 |
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Chlorine 10.95 % Cl 10.95 % Cl |
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- %
Cl -2.47 % -O=Cl2 |
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______ ______ |
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100.00 % 100.17 % = TOTAL OXIDE |
| Empirical Formula: |
Tl1.02Cl0.78Br0.19 |
| Environment: |
Occurs as a drusy coating on one surface of a single specimen collected from an active fumarole. Sal ammoniac group. |
| IMA Status: |
Approved IMA 2003 (Dana # Added) |
| Locality: |
La Fossa crater, Vulcano, Italy Link to MinDat.org Location Data. |
| Name Origin: |
Named for the locality. |
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