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Franckeite Mineral Data
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General Franckeite Information
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 Chemical Formula: |
(Pb,Sn)6Fe++Sn2Sb2S14 |
| Composition: |
Molecular Weight = 1,995.14 gm |
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Iron 2.80 % Fe |
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Tin 13.68 % Sn |
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Antimony 12.20 % Sb |
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Lead 48.81 % Pb |
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Sulfur 22.50 % S |
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______ |
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100.00 % |
| Empirical Formula: |
Pb4.7Sn2.3Fe2+Sb2S14 |
| Environment: |
Hydrothermal Ag-Sn deposits and limestone contact metamorphic deposit. |
| IMA Status: |
Valid Species (Pre-IMA) 1893 |
| Locality: |
Found in Bolivia at Poopo in Oruro and at Las Aminas, southeast of Chocaya, in Potosi. Link to MinDat.org Location Data. |
| Name Origin: |
Named after the mining engineers, Carl and Ernest Francke. |
| Name Pronunciation: |
Franckeite + Pronunciation  |
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