| Reference Type | Journal (article/letter/editorial) |
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| Title | Mckelveyite group minerals – Part 4: Alicewilsonite-(YLa), Na₂Sr₂YLa(CO₃)₆\,\cdot\,3H₂O, a new lanthanum-dominant species from the Paratoo mine, Australia |
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| Journal | European Journal of Mineralogy |
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| Authors | Lykova, I. | Author |
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| Rowe, R. | Author |
| Poirier, G. | Author |
| Friis, H. | Author |
| Helwig, K. | Author |
| Year | 2024 | Volume | < 36 > |
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| Page(s) | 301-310 | Issue | < 2 > |
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| URL | |
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| DOI | doi:10.5194/ejm-36-301-2024Search in ResearchGate |
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| Classification | Not set | LoC | Not set |
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| Mindat Ref. ID | 17225889 | Long-form Identifier | mindat:1:5:17225889:0 |
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| GUID | 43b7ad3f-45d8-43a0-80ee-33fdd0ef0e6c |
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| Full Reference | Lykova, I., Rowe, R., Poirier, G., Friis, H., Helwig, K. (2024) Mckelveyite group minerals – Part 4: Alicewilsonite-(YLa), Na₂Sr₂YLa(CO₃)₆\,\cdot\,3H₂O, a new lanthanum-dominant species from the Paratoo mine, Australia. European Journal of Mineralogy, 36 (2) 301-310 doi:10.5194/ejm-36-301-2024 |
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| Plain Text | Lykova, I., Rowe, R., Poirier, G., Friis, H., Helwig, K. (2024) Mckelveyite group minerals – Part 4: Alicewilsonite-(YLa), Na₂Sr₂YLa(CO₃)₆\,\cdot\,3H₂O, a new lanthanum-dominant species from the Paratoo mine, Australia. European Journal of Mineralogy, 36 (2) 301-310 doi:10.5194/ejm-36-301-2024 |
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| In | Link this record to the correct parent record (if possible) |
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| Abstract/Notes | The new mckelveyite group mineral, alicewilsonite-(YLa), Na2Sr2YLa(CO3)6 ⋅ 3H2O, was found together with kamphaugite-(Y), paratooite-(Y), bastnäsite-(La), and decrespignyite-(Y) coating along fractures in dolomite at the Paratoo copper mine, South Australia, Australia. It occurs as pale pink to colourless pseudohexagonal tabular crystals up to 150 µm in size. The streak is white; the lustre is vitreous. The mineral has no cleavage. Dcalc is 3.37 g cm−3. Alicewilsonite-(YLa) is optically biaxial (−), α = 1.556(2), β= 1.582(2), γ= 1.592(2), 2V (meas.) = 60(2)°, 2V (calc.) = 63° (589 nm). The IR spectrum is reported. The composition (wt %, average of seven analyses) is Na2O 7.43, CaO 2.00, SrO 18.43, BaO 1.64, Y2O3 9.59, La2O3 11.74, Pr2O3 1.29, Nd2O3 5.74, Sm2O3 0.44, Eu2O3 0.09, Gd2O3 0.95, Dy2O3 1.15, Ho2O3 0.25, Er2O3 0.89, Yb2O3 0.29, CO2 29.78, H2O 6.18, total 97.88. The empirical formula calculated on the basis of six cations with 3 H2O molecules is as follows: Na2.10Ca0.31Sr1.56Ba0.10Y0.74La0.63Pr0.07 Nd0.30Sm0.03Eu0.01Gd0.04Dy0.05Ho0.01Er0.04 Yb0.01(CO3)5.92(H2O)3. The mineral is triclinic, P1, a= 8.9839(2), b= 8.9728(3), c= 6.7441(2) Å, α= 102.812(2)°, β= 116.424(2)°, γ= 60.128(2)°, and V= 422.17(2) Å3 and Z= 1. |
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