Kesebolite-(Ce), CeCa<sub>2</sub>Mn(AsO<sub>4</sub>)[SiO<sub>3</sub>]<sub>3</sub>, a New REE-Bearing Arsenosilicate Mineral from the Kesebol Mine, Åmål, Västra Götaland, Sweden
Kesebolite-(Ce), ideal formula CeCa<sub>2</sub>Mn(AsO<sub>4</sub>)[SiO<sub>3</sub>]<sub>3</sub>, is a new mineral (IMA No. 2019-097) recovered from mine dumps at the Kesebol Mn-(Fe-Cu) deposit in Västra Götaland, Sweden. It occurs with rhodonite, baryt...
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MDPI AG
2020-04-01
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| Series: | Minerals |
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| Online Access: | https://www.mdpi.com/2075-163X/10/4/385 |
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| author | Dan Holtstam Luca Bindi Andreas Karlsson Jörgen Langhof Thomas Zack Paola Bonazzi Anders Persson |
| author_facet | Dan Holtstam Luca Bindi Andreas Karlsson Jörgen Langhof Thomas Zack Paola Bonazzi Anders Persson |
| author_sort | Dan Holtstam |
| collection | DOAJ |
| description | Kesebolite-(Ce), ideal formula CeCa<sub>2</sub>Mn(AsO<sub>4</sub>)[SiO<sub>3</sub>]<sub>3</sub>, is a new mineral (IMA No. 2019-097) recovered from mine dumps at the Kesebol Mn-(Fe-Cu) deposit in Västra Götaland, Sweden. It occurs with rhodonite, baryte, quartz, calcite, talc, andradite, rhodochrosite, K-feldspar, hematite, gasparite-(Ce), chernovite-(Y) and ferriakasakaite-(Ce). It forms mostly euhedral crystals, with lengthwise striation. The mineral is dark grayish-brown to brown, translucent, with light brown streak. It is optically biaxial (+), with weak pleochroism, and <i>n</i><sub>calc</sub> = 1.74. <i>H</i> = 5–6 and VHN<sub>100</sub> = 825. Fair cleavage is observed on {100}. The calculated density is 3.998(5) g·cm<sup>−3</sup>. Kesebolite-(Ce) is monoclinic, <i>P</i>2<sub>1</sub>/<i>c</i>, with unit-cell parameters from X-ray single-crystal diffraction data: <i>a</i> = 6.7382(3), <i>b</i> = 13.0368(6), <i>c</i> = 12.0958(6) Å, β = 98.578(2)°, and <i>V</i> = 1050.66(9) Å<sup>3</sup>, with Z = 4. Strongest Bragg peaks in the X-ray powder pattern are: [<i>I</i>(%), <i>d</i>(Å) (<i>hkl</i>)] 100, 3.114 (20-2); 92, 2.924 (140); 84, 3.138 (041); 72, 2.908 (014); 57, 3.228 (210); 48, 2.856 (042); 48, 3.002 (132). The unique crystal structure was solved and refined to <i>R1</i> = 4.6%. It consists of 6-periodic single silicate chains along (001); these are interconnected to infinite (010) strings of alternating, corner-sharing MnO<sub>6</sub> and AsO<sub>4</sub> polyhedra, altogether forming a trellis-like framework parallel to (100). |
| first_indexed | 2024-03-10T20:14:54Z |
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| language | English |
| last_indexed | 2024-03-10T20:14:54Z |
| publishDate | 2020-04-01 |
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| spelling | doaj.art-e21597e75015469d99eb058f54850c3c2023-11-19T22:40:02ZengMDPI AGMinerals2075-163X2020-04-0110438510.3390/min10040385Kesebolite-(Ce), CeCa<sub>2</sub>Mn(AsO<sub>4</sub>)[SiO<sub>3</sub>]<sub>3</sub>, a New REE-Bearing Arsenosilicate Mineral from the Kesebol Mine, Åmål, Västra Götaland, SwedenDan Holtstam0Luca Bindi1Andreas Karlsson2Jörgen Langhof3Thomas Zack4Paola Bonazzi5Anders Persson6Department of Geosciences, Swedish Museum of Natural History, P.O. Box 50007, SE-104 05 Stockholm, SwedenDipartimento di Scienze della Terra, Università degli Studi di Firenze, Via G. La Pira 4, I-50121 Firenze, ItalyDepartment of Geosciences, Swedish Museum of Natural History, P.O. Box 50007, SE-104 05 Stockholm, SwedenDepartment of Geosciences, Swedish Museum of Natural History, P.O. Box 50007, SE-104 05 Stockholm, SwedenDepartment of Earth Sciences, University of Gothenburg, P.O. Box 460, SE-405 30 Göteborg, SwedenDipartimento di Scienze della Terra, Università degli Studi di Firenze, Via G. La Pira 4, I-50121 Firenze, ItalyParkgatan 14, SE-671 32 Arvika, SwedenKesebolite-(Ce), ideal formula CeCa<sub>2</sub>Mn(AsO<sub>4</sub>)[SiO<sub>3</sub>]<sub>3</sub>, is a new mineral (IMA No. 2019-097) recovered from mine dumps at the Kesebol Mn-(Fe-Cu) deposit in Västra Götaland, Sweden. It occurs with rhodonite, baryte, quartz, calcite, talc, andradite, rhodochrosite, K-feldspar, hematite, gasparite-(Ce), chernovite-(Y) and ferriakasakaite-(Ce). It forms mostly euhedral crystals, with lengthwise striation. The mineral is dark grayish-brown to brown, translucent, with light brown streak. It is optically biaxial (+), with weak pleochroism, and <i>n</i><sub>calc</sub> = 1.74. <i>H</i> = 5–6 and VHN<sub>100</sub> = 825. Fair cleavage is observed on {100}. The calculated density is 3.998(5) g·cm<sup>−3</sup>. Kesebolite-(Ce) is monoclinic, <i>P</i>2<sub>1</sub>/<i>c</i>, with unit-cell parameters from X-ray single-crystal diffraction data: <i>a</i> = 6.7382(3), <i>b</i> = 13.0368(6), <i>c</i> = 12.0958(6) Å, β = 98.578(2)°, and <i>V</i> = 1050.66(9) Å<sup>3</sup>, with Z = 4. Strongest Bragg peaks in the X-ray powder pattern are: [<i>I</i>(%), <i>d</i>(Å) (<i>hkl</i>)] 100, 3.114 (20-2); 92, 2.924 (140); 84, 3.138 (041); 72, 2.908 (014); 57, 3.228 (210); 48, 2.856 (042); 48, 3.002 (132). The unique crystal structure was solved and refined to <i>R1</i> = 4.6%. It consists of 6-periodic single silicate chains along (001); these are interconnected to infinite (010) strings of alternating, corner-sharing MnO<sub>6</sub> and AsO<sub>4</sub> polyhedra, altogether forming a trellis-like framework parallel to (100).https://www.mdpi.com/2075-163X/10/4/385kesebolite-(Ce)new mineralcrystal structurearsenosilicaterare earth elementscerium anomaly |
| spellingShingle | Dan Holtstam Luca Bindi Andreas Karlsson Jörgen Langhof Thomas Zack Paola Bonazzi Anders Persson Kesebolite-(Ce), CeCa<sub>2</sub>Mn(AsO<sub>4</sub>)[SiO<sub>3</sub>]<sub>3</sub>, a New REE-Bearing Arsenosilicate Mineral from the Kesebol Mine, Åmål, Västra Götaland, Sweden Minerals kesebolite-(Ce) new mineral crystal structure arsenosilicate rare earth elements cerium anomaly |
| title | Kesebolite-(Ce), CeCa<sub>2</sub>Mn(AsO<sub>4</sub>)[SiO<sub>3</sub>]<sub>3</sub>, a New REE-Bearing Arsenosilicate Mineral from the Kesebol Mine, Åmål, Västra Götaland, Sweden |
| title_full | Kesebolite-(Ce), CeCa<sub>2</sub>Mn(AsO<sub>4</sub>)[SiO<sub>3</sub>]<sub>3</sub>, a New REE-Bearing Arsenosilicate Mineral from the Kesebol Mine, Åmål, Västra Götaland, Sweden |
| title_fullStr | Kesebolite-(Ce), CeCa<sub>2</sub>Mn(AsO<sub>4</sub>)[SiO<sub>3</sub>]<sub>3</sub>, a New REE-Bearing Arsenosilicate Mineral from the Kesebol Mine, Åmål, Västra Götaland, Sweden |
| title_full_unstemmed | Kesebolite-(Ce), CeCa<sub>2</sub>Mn(AsO<sub>4</sub>)[SiO<sub>3</sub>]<sub>3</sub>, a New REE-Bearing Arsenosilicate Mineral from the Kesebol Mine, Åmål, Västra Götaland, Sweden |
| title_short | Kesebolite-(Ce), CeCa<sub>2</sub>Mn(AsO<sub>4</sub>)[SiO<sub>3</sub>]<sub>3</sub>, a New REE-Bearing Arsenosilicate Mineral from the Kesebol Mine, Åmål, Västra Götaland, Sweden |
| title_sort | kesebolite ce ceca sub 2 sub mn aso sub 4 sub sio sub 3 sub sub 3 sub a new ree bearing arsenosilicate mineral from the kesebol mine amal vastra gotaland sweden |
| topic | kesebolite-(Ce) new mineral crystal structure arsenosilicate rare earth elements cerium anomaly |
| url | https://www.mdpi.com/2075-163X/10/4/385 |
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