Mckelveyite group minerals – Part 1: Nomenclature and new data on donnayite-(Y)
<p>The mckelveyite group consisting of seven carbonate minerals – mckelveyite-(Y), ewaldite, weloganite, donnayite-(Y), alicewilsonite-(YCe), alicewilsonite-(YLa), and bainbridgeite-(YCe) – is formally established. The general formula of the minerals is <span class="inline-formula"...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
2023-02-01
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| Series: | European Journal of Mineralogy |
| Online Access: | https://ejm.copernicus.org/articles/35/133/2023/ejm-35-133-2023.pdf |
| _version_ | 1797893149915348992 |
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| author | I. Lykova R. Rowe G. Poirier G. Giester K. Ojaste K. Ojaste H. Friis |
| author_facet | I. Lykova R. Rowe G. Poirier G. Giester K. Ojaste K. Ojaste H. Friis |
| author_sort | I. Lykova |
| collection | DOAJ |
| description | <p>The mckelveyite group consisting of seven carbonate
minerals – mckelveyite-(Y), ewaldite, weloganite, donnayite-(Y),
alicewilsonite-(YCe), alicewilsonite-(YLa), and bainbridgeite-(YCe) – is
formally established. The general formula of the minerals is
<span class="inline-formula"><i>A</i><sub>3</sub><i>B</i><sub>3</sub></span>(CO<span class="inline-formula"><sub>3</sub></span>)<span class="inline-formula"><sub>6</sub></span> <span class="inline-formula">⋅</span> 3H<span class="inline-formula"><sub>2</sub></span>O, where <span class="inline-formula"><i>A</i>=</span> Na, Ca, Y, and Zr
and <span class="inline-formula"><i>B</i>=</span> Sr, Ba, Ce, and La. Different order–disorder modifications are known
resulting in triclinic, monoclinic, hexagonal, and trigonal minerals with
essentially the same structure. Re-examination of donnayite-(Y) type
specimens shows that the original description contains data collected on two
different species: donnayite-(Y) and alicewilsonite-(YCe). Donnayite-(Y),
NaCaSr<span class="inline-formula"><sub>3</sub></span>Y(CO<span class="inline-formula"><sub>3</sub></span>)<span class="inline-formula"><sub>6</sub></span> <span class="inline-formula">⋅</span> 3H<span class="inline-formula"><sub>2</sub></span>O, was found in only one
specimen out of seven – CMNMC 39396 – housed at the Canadian Museum of
Nature, Ottawa. This specimen becomes the holotype of donnayite-(Y). The
crystal structure of donnayite-(Y) was solved and refined to <span class="inline-formula"><i>R</i><sub>1</sub>=</span> 0.055 for 3366 reflections with <span class="inline-formula"><i>I</i><i>></i>2<i>σ</i>(<i>I</i>)</span>. Donnayite-(Y) is
shown to have a weloganite-type structure confirming its place in the
mckelveyite group.</p> |
| first_indexed | 2024-04-10T06:48:20Z |
| format | Article |
| id | doaj.art-62141e29dde04397a8fffca9869f98f3 |
| institution | Directory Open Access Journal |
| issn | 0935-1221 1617-4011 |
| language | English |
| last_indexed | 2024-04-10T06:48:20Z |
| publishDate | 2023-02-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | European Journal of Mineralogy |
| spelling | doaj.art-62141e29dde04397a8fffca9869f98f32023-02-28T09:24:27ZengCopernicus PublicationsEuropean Journal of Mineralogy0935-12211617-40112023-02-013513314210.5194/ejm-35-133-2023Mckelveyite group minerals – Part 1: Nomenclature and new data on donnayite-(Y)I. Lykova0R. Rowe1G. Poirier2G. Giester3K. Ojaste4K. Ojaste5H. Friis6Canadian Museum of Nature, Ottawa, K1P 6P4, CanadaCanadian Museum of Nature, Ottawa, K1P 6P4, CanadaCanadian Museum of Nature, Ottawa, K1P 6P4, CanadaInstitute of Mineralogy and Crystallography, University of Vienna, 1090 Vienna, AustriaCanadian Museum of Nature, Ottawa, K1P 6P4, CanadaDepartment of Earth and Environmental Sciences, University of Ottawa, Ottawa, K1N 6N5, CanadaNatural History Museum, University of Oslo, Oslo, 0318, Norway<p>The mckelveyite group consisting of seven carbonate minerals – mckelveyite-(Y), ewaldite, weloganite, donnayite-(Y), alicewilsonite-(YCe), alicewilsonite-(YLa), and bainbridgeite-(YCe) – is formally established. The general formula of the minerals is <span class="inline-formula"><i>A</i><sub>3</sub><i>B</i><sub>3</sub></span>(CO<span class="inline-formula"><sub>3</sub></span>)<span class="inline-formula"><sub>6</sub></span> <span class="inline-formula">⋅</span> 3H<span class="inline-formula"><sub>2</sub></span>O, where <span class="inline-formula"><i>A</i>=</span> Na, Ca, Y, and Zr and <span class="inline-formula"><i>B</i>=</span> Sr, Ba, Ce, and La. Different order–disorder modifications are known resulting in triclinic, monoclinic, hexagonal, and trigonal minerals with essentially the same structure. Re-examination of donnayite-(Y) type specimens shows that the original description contains data collected on two different species: donnayite-(Y) and alicewilsonite-(YCe). Donnayite-(Y), NaCaSr<span class="inline-formula"><sub>3</sub></span>Y(CO<span class="inline-formula"><sub>3</sub></span>)<span class="inline-formula"><sub>6</sub></span> <span class="inline-formula">⋅</span> 3H<span class="inline-formula"><sub>2</sub></span>O, was found in only one specimen out of seven – CMNMC 39396 – housed at the Canadian Museum of Nature, Ottawa. This specimen becomes the holotype of donnayite-(Y). The crystal structure of donnayite-(Y) was solved and refined to <span class="inline-formula"><i>R</i><sub>1</sub>=</span> 0.055 for 3366 reflections with <span class="inline-formula"><i>I</i><i>></i>2<i>σ</i>(<i>I</i>)</span>. Donnayite-(Y) is shown to have a weloganite-type structure confirming its place in the mckelveyite group.</p>https://ejm.copernicus.org/articles/35/133/2023/ejm-35-133-2023.pdf |
| spellingShingle | I. Lykova R. Rowe G. Poirier G. Giester K. Ojaste K. Ojaste H. Friis Mckelveyite group minerals – Part 1: Nomenclature and new data on donnayite-(Y) European Journal of Mineralogy |
| title | Mckelveyite group minerals – Part 1: Nomenclature and new data on donnayite-(Y) |
| title_full | Mckelveyite group minerals – Part 1: Nomenclature and new data on donnayite-(Y) |
| title_fullStr | Mckelveyite group minerals – Part 1: Nomenclature and new data on donnayite-(Y) |
| title_full_unstemmed | Mckelveyite group minerals – Part 1: Nomenclature and new data on donnayite-(Y) |
| title_short | Mckelveyite group minerals – Part 1: Nomenclature and new data on donnayite-(Y) |
| title_sort | mckelveyite group minerals part 1 nomenclature and new data on donnayite y |
| url | https://ejm.copernicus.org/articles/35/133/2023/ejm-35-133-2023.pdf |
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