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Tuscanite Mineral Data
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General Tuscanite Information
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 Chemical Formula: |
K(Ca,Na)6(Si,Al)10O22(SO4,CO3,(OH)2)•(H2O) |
| Composition: |
Molecular Weight = 1,101.39 gm |
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Potassium 3.19 % K 3.85 % K2O |
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Sodium 1.04 % Na 1.41 % Na2O |
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Calcium 19.29 % Ca 26.99 % CaO |
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Magnesium 0.22 % Mg 0.37 % MgO |
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Aluminum 9.06 % Al 17.13 % Al2O3 |
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Iron 0.51 % Fe 0.65 % FeO |
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Silicon 16.07 % Si 34.37 % SiO2 |
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Hydrogen 0.27 % H 2.45 % H2O |
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Carbon 0.65 % C 2.40 % CO2 |
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Sulfur 4.08 % S 10.18 % SO3 |
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Oxygen 45.61 % O |
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______ ______ |
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100.00 % 99.78 % = TOTAL OXIDE |
| Empirical Formula: |
K0.9Ca5.3Na0.5Mg0.1Fe2+0.1Si6.3Al3.7O22(SO4)1.4(CO3)0.6(OH)�(H2O) |
| Environment: |
Within ejected blocks of metasomatized carbonate rocks in a pumice deposit. |
| IMA Status: |
Approved IMA 1977 |
| Locality: |
Latera caldera, Pitigliano, near Grosseto, Tuscan, and at Sacrofano, Lazio, Italy. Link to MinDat.org Location Data. |
| Name Origin: |
Named for the Tuscany region of Italy where the mineral was first found. |
| Name Pronunciation: |
Tuscanite + Pronunciation  |
| Synonym: |
ICSD 9683 |
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PDF 29-1035 |
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