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Decrespignyite-(Y) Mineral Data
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General Decrespignyite-(Y) Information
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 Chemical Formula: |
(Y,REE)4Cu(CO3)4Cl(OH)5•2(H2O) |
| Composition: |
Molecular Weight = 867.49 gm |
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Calcium 0.32 % Ca 0.45 % CaO |
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Lanthanum 0.32 % La 0.38 % La2O3 |
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Praeseodymium 0.16 % Pr 0.19 % Pr2O3 |
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Samarium 0.87 % Sm 1.00 % Sm2O3 |
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Gadolinium 3.99 % Gd 4.60 % Gd2O3 |
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Dysprosium 3.18 % Dy 3.65 % Dy2O3 |
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Yttrium 32.08 % Y 40.74 % Y2O3 |
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Holmium 2.28 % Ho 2.61 % Ho2O3 |
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Erbium 2.12 % Er 2.43 % Er2O3 |
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Terbium 0.37 % Tb 0.42 % Tb2O3 |
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Copper 8.42 % Cu 10.55 % CuO |
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Hydrogen 1.17 % H 10.45 % H2O |
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Carbon 5.22 % C 19.13 % CO2 |
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Neodymium 1.00 % Nd 1.16 % Nd2O3 |
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Chlorine 2.90 % Cl 2.90 % Cl |
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- %
Cl -0.65 % -O=Cl2 |
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Oxygen 35.60 % O |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
| Empirical Formula: |
Y3.13Gd0.22Dy0.17Ho0.12Er0.11Ca0.07Nd0.06Sm0.05Tb0.02La0.02Pr0.01Cu1.15(CO3)3.77Cl0.71
(OH)0.29(OH)5.63�2.07(H2O) |
| Environment: |
Supergene product with other Y-bearing copper minerals. |
| IMA Status: |
Approved IMA 2002 (Dana # Added) |
| Locality: |
Paratoo copper mine, Yunta, Olary Province, South Australia, Australia. Link to MinDat.org Location Data. |
| Name Origin: |
Named for Robert James Champion de Crespigny (1950-), Chancellor of the University of Adelaide, Australia. |
| Synonym: |
IMA2001-027 |
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