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Samarskite-(Yb) Mineral Data
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General Samarskite-(Yb) Information
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 Chemical Formula: |
(Yb,Y,REE,U,Th,Ca,Fe++) (Nb,Ta,Ti)O4 |
| Composition: |
Molecular Weight = 312.29 gm |
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Calcium 1.58 % Ca 2.21 % CaO |
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Lanthanum 0.04 % La 0.05 % La2O3 |
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Cerium 0.18 % Ce 0.21 % Ce2O3 |
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Praeseodymium 0.05 % Pr 0.05 % Pr2O3 |
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Samarium 0.39 % Sm 0.45 % Sm2O3 |
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Gadolinium 0.50 % Gd 0.58 % Gd2O3 |
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Dysprosium 2.81 % Dy 3.22 % Dy2O3 |
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Yttrium 1.59 % Y 2.02 % Y2O3 |
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Holmium 0.53 % Ho 0.60 % Ho2O3 |
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Erbium 3.11 % Er 3.55 % Er2O3 |
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Thulium 0.54 % Tm 0.62 % Tm2O3 |
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Lutetium 0.90 % Lu 1.02 % Lu2O3 |
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Terbium 0.25 % Tb 0.29 % Tb2O3 |
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Thorium 9.29 % Th 10.57 % ThO2 |
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Ytterbium 5.32 % Yb 6.06 % Yb2O3 |
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Zirconium 0.76 % Zr 1.03 % ZrO2 |
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Scandium 0.17 % Sc 0.26 % Sc2O3 |
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Uranium 9.60 % U 10.89 % UO2 |
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Tantalum 12.98 % Ta 15.85 % Ta2O5 |
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Titanium 0.41 % Ti 0.69 % TiO2 |
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Manganese 0.83 % Mn 1.07 % MnO |
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Niobium 21.66 % Nb 30.98 % Nb2O5 |
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Iron 2.07 % Fe 2.67 % FeO |
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Silicon 0.20 % Si 0.42 % SiO2 |
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Tin 0.46 % Sn 0.58 % SnO2 |
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Lead 0.27 % Pb 0.29 % PbO |
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Tungsten 2.47 % W 3.12 % WO3 |
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Neodymium 0.55 % Nd 0.65 % Nd2O3 |
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Oxygen 20.49 % O |
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______ ______ |
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100.00 % 100.01 % = TOTAL OXIDE |
| Empirical Formula: |
Yb0.09Er0.05Y0.05Dy0.05Lu0.01Nd0.01Tm0.01Ho0.01Gd0.01Sm0.008Tb0.005Ce0.004Pr0.001La0.001U0.12
Th0.12Ca0.12Fe2+0.11Mn2+0.04O4 |
| Environment: |
Found as anhedral masses up to tens of centimeters across that are intimately intergrown with ferrocolumbite and zircon. |
| IMA Status: |
Approved IMA 2004 (Dana # Added) |
| Locality: |
Little Patsy pegmatite, Jefferson Co., Colorado, USA. Link to MinDat.org Location Data. |
| Name Origin: |
Named as the Yb-dominant analogue of samarskite. |
| Name Pronunciation: |
Samarskite-(Yb) + Pronunciation  |
| Synonym: |
IMA2004-001 |
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