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Zinnwaldite Mineral Data
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General Zinnwaldite Information
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 Chemical Formula: |
KLiFe++Al(AlSi3)O10(F,OH)2 |
| Composition: |
Molecular Weight = 437.10 gm |
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Potassium 8.94 % K 10.78 % K2O |
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Lithium 1.59 % Li 3.42 % Li2O |
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Aluminum 12.35 % Al 23.33 % Al2O3 |
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Iron 12.78 % Fe 16.44 % FeO |
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Silicon 19.28 % Si 41.24 % SiO2 |
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Hydrogen 0.12 % H 1.03 % H2O |
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Oxygen 38.43 % O |
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Fluorine 6.52 % F 6.52 % F |
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- %
F -2.75 % -O=F2 |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
| Empirical Formula: |
KLiFe2+Al2Si3O10F1.5(OH)0.5 |
| Environment: |
Pneumatolytic mineral occurring in cassiterite and topaz-bearing pegmatites. |
| IMA Status: |
Valid Species (Pre-IMA) 1845 |
| Locality: |
Erzgebirge of Saxony at Zinnwald (now Cinovec) - "Ore Mountains", Czechoslovakia. Link to MinDat.org Location Data. |
| Name Origin: |
Named after its locality. |
| Name Pronunciation: |
Zinnwaldite + Pronunciation  |
| Synonym: |
Lithionite |
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