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Arapovite Mineral Data
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General Arapovite Information
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 Chemical Formula: |
(U,Th)(Ca,Na)2(K1-x[ ]x)Si8O20•H2O, x=0.5 |
| Composition: |
Molecular Weight = 897.66 gm |
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Potassium 3.70 % K 4.46 % K2O |
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Sodium 1.87 % Na 2.52 % Na2O |
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Calcium 5.76 % Ca 8.06 % CaO |
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Europium 0.17 % Eu 0.20 % Eu2O3 |
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Lanthanum 0.15 % La 0.18 % La2O3 |
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Cerium 0.47 % Ce 0.55 % Ce2O3 |
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Samarium 0.17 % Sm 0.19 % Sm2O3 |
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Dysprosium 0.18 % Dy 0.21 % Dy2O3 |
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Thorium 9.31 % Th 10.59 % ThO2 |
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Uranium 14.58 % U 16.54 % UO2 |
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Silicon 25.03 % Si 53.55 % SiO2 |
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Hydrogen 0.20 % H 1.79 % H2O |
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Lead 0.69 % Pb 0.75 % PbO |
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Neodymium 0.48 % Nd 0.56 % Nd2O3 |
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Oxygen 37.23 % O |
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______ ______ |
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100.00 % 100.14 % = TOTAL OXIDE |
| Empirical Formula: |
U0.55Th0.36Pb0.03Ce0.03Nd0.03La0.01Sm0.01Eu0.01Dy0.01Ca1.29Na0.73K0.85Si8O20�0.89(H2O) |
| Environment: |
Steacyite group (4-membered double ring structure [Si8O20] unit. U4+ analogue of turkestanite and the U4+-Ca analogue of steacyite. |
| IMA Status: |
Approved IMA 2004 (Dana # Added) |
| Locality: |
Moraine of the Dara-i-Pioz glacier, the Alai mountain ridge, Tien-Shan Mountains, northern Tajikistan. Link to MinDat.org Location Data. |
| Name Origin: |
Named for Yu. A. Arapov (1907-1988), a famous geologist and author of many works on the geochemistry, mineralogy and petrology of Middle Asia. |
| Synonym: |
IMA2003-046 |
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