Mckelveyite group minerals – Part 2: Alicewilsonite-(YCe), Na2Sr2YCe(CO3)6 · 3H2O, a new species
Abstract. The new mckelveyite group mineral alicewilsonite-(YCe), ideally Na2Sr2YCe(CO3)6 ⋅ 3H2O, was found at Mont Saint-Hilaire, Quebec, Canada, and subsequently at the Saint-Amable sill, Quebec, Canada, and the Khibiny Massif, Kola Peninsula, Russia. Alicewilsonite-(YCe) crystals are commonly hem...
Published in: | European Journal of Mineralogy |
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Online Access: | http://hdl.handle.net/10852/101643 https://doi.org/10.5194/ejm-35-143-2023 |
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ftoslouniv:oai:www.duo.uio.no:10852/101643 2023-05-15T17:05:05+02:00 Mckelveyite group minerals – Part 2: Alicewilsonite-(YCe), Na2Sr2YCe(CO3)6 · 3H2O, a new species ENEngelskEnglishMckelveyite group minerals – Part 2: Alicewilsonite-(YCe), Na2Sr2YCe(CO3)6 · 3H2O, a new species Lykova, Inna Rowe, Ralph Poirier, Glenn Friis, Henrik Helwig, Kate 2023-02-28T12:01:59Z http://hdl.handle.net/10852/101643 https://doi.org/10.5194/ejm-35-143-2023 EN eng Lykova, Inna Rowe, Ralph Poirier, Glenn Friis, Henrik Helwig, Kate . Mckelveyite group minerals – Part 2: Alicewilsonite-(YCe), Na2Sr2YCe(CO3)6 · 3H2O, a new species. European journal of mineralogy. 2023, 35(1), 143-155 http://hdl.handle.net/10852/101643 2130033 info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=European journal of mineralogy&rft.volume=35&rft.spage=143&rft.date=2023 European journal of mineralogy 35 1 143 155 https://doi.org/10.5194/ejm-35-143-2023 Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ 0935-1221 Journal article Tidsskriftartikkel Peer reviewed PublishedVersion 2023 ftoslouniv https://doi.org/10.5194/ejm-35-143-2023 2023-03-22T23:36:58Z Abstract. The new mckelveyite group mineral alicewilsonite-(YCe), ideally Na2Sr2YCe(CO3)6 ⋅ 3H2O, was found at Mont Saint-Hilaire, Quebec, Canada, and subsequently at the Saint-Amable sill, Quebec, Canada, and the Khibiny Massif, Kola Peninsula, Russia. Alicewilsonite-(YCe) crystals are commonly hemimorphic pseudotrigonal and pseudohexagonal and show barrel-shaped, saucer-shaped, spindle-shaped, cone-shaped, columnar, tabular, and platy habits. They are usually up to 2–3 mm in size with some larger crystals reaching 2–3 cm. The crystals often form stacked or parallel growth aggregates and rosettes. Alicewilsonite-(YCe) colour varies from pale yellow to yellow, lemon yellow, green yellow, orange-yellow, pale green to green, pale grey to grey, green grey, beige, and colourless. The streak is white; the lustre is vitreous. The cleavage is fair to indistinct, parallel to (001). The Mohs hardness is 3. Dcalc is 3.37 g cm−3. Alicewilsonite-(YCe) is optically biaxial (+), with α=1.554(3), β=1.558(3), γ=1.644(2), 2V (calc.) = 26∘, 2V (meas.) = 20(3)∘ (589 nm). The IR spectrum is reported. The composition (wt %, average of six analyses) is Na2O 7.42, CaO 0.72, SrO 21.49, BaO 1.41, Y2O3 8.52, La2O3 5.93, Ce2O3 9.52, Pr2O3 0.59, Nd2O3 1.75, Sm2O3 0.46, Gd2O3 0.83, Dy2O3 1.65, Ho2O3 0.34, Er2O3 1.21, Yb2O3 0.64, CO2 29.33, H2O 6.13, total 97.94. The empirical formula of the holotype calculated on the basis of six cations is Na2.11Ca0.11Sr1.83Ba0.08Y0.67(Ce0.51La0.32Pr0.03Nd0.09Sm0.02Gd0.04 Dy0.08Ho0.02Er0.06Yb0.03)Σ1.20(CO3)5.88 (H2O)3.00. The mineral is triclinic, P1, a=9.0036(6) Å, b=9.0175(6) Å, c=6.7712(5) Å, α=102.724(2)∘, β=116.398(2)∘, γ=60.003(2)∘, V=426.46(5) Å3, and Z=1. The strongest reflections of the powder X-ray diffraction pattern [d,Å(I)(hkl)] are 6.07(31)(001), 4.372(100)(120, 2‾1‾1, 11‾0), 4.037(25)(1‾11, 1‾2‾1, 210), 3.201(25)(121, 2‾1‾2, 11‾1), 2.831(67)(1‾12, 1‾2‾2, 211, 1‾21, 21‾0), 2.601(39)(030, 3‾3‾1,3‾01), 2.236(24)(2‾4‾1, 2‾21, 4‾2‾1). 2.019(23)(003, 2‾22, 2‾4‾2‾, 420). 1.9742(24)(032, 3‾03, ... Article in Journal/Newspaper kola peninsula Universitet i Oslo: Digitale utgivelser ved UiO (DUO) Canada Khibiny ENVELOPE(33.210,33.210,67.679,67.679) Kola Peninsula European Journal of Mineralogy 35 1 143 155 |
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Universitet i Oslo: Digitale utgivelser ved UiO (DUO) |
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ftoslouniv |
language |
English |
description |
Abstract. The new mckelveyite group mineral alicewilsonite-(YCe), ideally Na2Sr2YCe(CO3)6 ⋅ 3H2O, was found at Mont Saint-Hilaire, Quebec, Canada, and subsequently at the Saint-Amable sill, Quebec, Canada, and the Khibiny Massif, Kola Peninsula, Russia. Alicewilsonite-(YCe) crystals are commonly hemimorphic pseudotrigonal and pseudohexagonal and show barrel-shaped, saucer-shaped, spindle-shaped, cone-shaped, columnar, tabular, and platy habits. They are usually up to 2–3 mm in size with some larger crystals reaching 2–3 cm. The crystals often form stacked or parallel growth aggregates and rosettes. Alicewilsonite-(YCe) colour varies from pale yellow to yellow, lemon yellow, green yellow, orange-yellow, pale green to green, pale grey to grey, green grey, beige, and colourless. The streak is white; the lustre is vitreous. The cleavage is fair to indistinct, parallel to (001). The Mohs hardness is 3. Dcalc is 3.37 g cm−3. Alicewilsonite-(YCe) is optically biaxial (+), with α=1.554(3), β=1.558(3), γ=1.644(2), 2V (calc.) = 26∘, 2V (meas.) = 20(3)∘ (589 nm). The IR spectrum is reported. The composition (wt %, average of six analyses) is Na2O 7.42, CaO 0.72, SrO 21.49, BaO 1.41, Y2O3 8.52, La2O3 5.93, Ce2O3 9.52, Pr2O3 0.59, Nd2O3 1.75, Sm2O3 0.46, Gd2O3 0.83, Dy2O3 1.65, Ho2O3 0.34, Er2O3 1.21, Yb2O3 0.64, CO2 29.33, H2O 6.13, total 97.94. The empirical formula of the holotype calculated on the basis of six cations is Na2.11Ca0.11Sr1.83Ba0.08Y0.67(Ce0.51La0.32Pr0.03Nd0.09Sm0.02Gd0.04 Dy0.08Ho0.02Er0.06Yb0.03)Σ1.20(CO3)5.88 (H2O)3.00. The mineral is triclinic, P1, a=9.0036(6) Å, b=9.0175(6) Å, c=6.7712(5) Å, α=102.724(2)∘, β=116.398(2)∘, γ=60.003(2)∘, V=426.46(5) Å3, and Z=1. The strongest reflections of the powder X-ray diffraction pattern [d,Å(I)(hkl)] are 6.07(31)(001), 4.372(100)(120, 2‾1‾1, 11‾0), 4.037(25)(1‾11, 1‾2‾1, 210), 3.201(25)(121, 2‾1‾2, 11‾1), 2.831(67)(1‾12, 1‾2‾2, 211, 1‾21, 21‾0), 2.601(39)(030, 3‾3‾1,3‾01), 2.236(24)(2‾4‾1, 2‾21, 4‾2‾1). 2.019(23)(003, 2‾22, 2‾4‾2‾, 420). 1.9742(24)(032, 3‾03, ... |
format |
Article in Journal/Newspaper |
author |
Lykova, Inna Rowe, Ralph Poirier, Glenn Friis, Henrik Helwig, Kate |
spellingShingle |
Lykova, Inna Rowe, Ralph Poirier, Glenn Friis, Henrik Helwig, Kate Mckelveyite group minerals – Part 2: Alicewilsonite-(YCe), Na2Sr2YCe(CO3)6 · 3H2O, a new species |
author_facet |
Lykova, Inna Rowe, Ralph Poirier, Glenn Friis, Henrik Helwig, Kate |
author_sort |
Lykova, Inna |
title |
Mckelveyite group minerals – Part 2: Alicewilsonite-(YCe), Na2Sr2YCe(CO3)6 · 3H2O, a new species |
title_short |
Mckelveyite group minerals – Part 2: Alicewilsonite-(YCe), Na2Sr2YCe(CO3)6 · 3H2O, a new species |
title_full |
Mckelveyite group minerals – Part 2: Alicewilsonite-(YCe), Na2Sr2YCe(CO3)6 · 3H2O, a new species |
title_fullStr |
Mckelveyite group minerals – Part 2: Alicewilsonite-(YCe), Na2Sr2YCe(CO3)6 · 3H2O, a new species |
title_full_unstemmed |
Mckelveyite group minerals – Part 2: Alicewilsonite-(YCe), Na2Sr2YCe(CO3)6 · 3H2O, a new species |
title_sort |
mckelveyite group minerals – part 2: alicewilsonite-(yce), na2sr2yce(co3)6 · 3h2o, a new species |
publishDate |
2023 |
url |
http://hdl.handle.net/10852/101643 https://doi.org/10.5194/ejm-35-143-2023 |
long_lat |
ENVELOPE(33.210,33.210,67.679,67.679) |
geographic |
Canada Khibiny Kola Peninsula |
geographic_facet |
Canada Khibiny Kola Peninsula |
genre |
kola peninsula |
genre_facet |
kola peninsula |
op_source |
0935-1221 |
op_relation |
Lykova, Inna Rowe, Ralph Poirier, Glenn Friis, Henrik Helwig, Kate . Mckelveyite group minerals – Part 2: Alicewilsonite-(YCe), Na2Sr2YCe(CO3)6 · 3H2O, a new species. European journal of mineralogy. 2023, 35(1), 143-155 http://hdl.handle.net/10852/101643 2130033 info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=European journal of mineralogy&rft.volume=35&rft.spage=143&rft.date=2023 European journal of mineralogy 35 1 143 155 https://doi.org/10.5194/ejm-35-143-2023 |
op_rights |
Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.5194/ejm-35-143-2023 |
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European Journal of Mineralogy |
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35 |
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143 |
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155 |
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1766059458056683520 |