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Polycrase-(Y) Mineral Data
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General Polycrase-(Y) Information
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 Chemical Formula: |
(Y,Ca,Ce,U,Th)(Ti,Nb,Ta)2O6 |
| Composition: |
Molecular Weight = 372.96 gm |
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Calcium 1.07 % Ca 1.50 % CaO |
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Cerium 3.76 % Ce 4.40 % Ce2O3 |
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Yttrium 11.92 % Y 15.14 % Y2O3 |
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Thorium 6.22 % Th 7.08 % ThO2 |
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Uranium 6.38 % U 7.67 % UO3 |
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Tantalum 14.56 % Ta 17.77 % Ta2O5 |
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Titanium 15.41 % Ti 25.70 % TiO2 |
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Niobium 14.95 % Nb 21.38 % Nb2O5 |
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Oxygen 25.74 % O |
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______ ______ |
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100.00 % 100.64 % = TOTAL OXIDE |
| Empirical Formula: |
Y0.5Ca0.1Ce0.1U0.1Th0.1Ti1.2Nb0.6Ta0.3O6 |
| Environment: |
Granitic pegmatites. |
| IMA Status: |
Valid Species (Pre-IMA) 1870 |
| Locality: |
Rasvag, Hidra (Hittero) Island, near Flekkefjord, and many other places in Norway. Link to MinDat.org Location Data. |
| Name Origin: |
From the Greek for "many" and "mixture", in reference to the large number of chemical elements in the formula. |
| Name Pronunciation: |
Polycrase-(Y) + Pronunciation  |
| Synonym: |
ICSD 89029 |
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PDF 46-1458 (U) |
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