Penikisite, BaMg2Al2(PO4)3(OH)3, isostructural with bjarebyite
The bjarebyite group of minerals, characterized by the general formula BaX2Y2(PO4)3(OH)3, with X = Mg, Fe2+ or Mn2+, and Y = Al or Fe3+, includes five members: bjarebyite BaMn2+2Al2(PO4)3(OH)3, johntomaite BaFe2+2Fe3+2(PO4)3(OH)3, kulanite BaFe2+2Al2(PO4)3(OH)3, penikisite BaMg2Al2(PO4)3(OH)3, and p...
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ftdoajarticles:oai:doaj.org/article:b59080c6fcff46a2ae8327462541318d 2023-05-15T17:10:30+02:00 Penikisite, BaMg2Al2(PO4)3(OH)3, isostructural with bjarebyite Michael G. Bowman Robert T. Downs Hexiong Yang 2013-02-01T00:00:00Z https://doi.org/10.1107/S1600536812051793 https://doaj.org/article/b59080c6fcff46a2ae8327462541318d EN eng International Union of Crystallography http://scripts.iucr.org/cgi-bin/paper?S1600536812051793 https://doaj.org/toc/1600-5368 doi:10.1107/S1600536812051793 1600-5368 https://doaj.org/article/b59080c6fcff46a2ae8327462541318d Acta Crystallographica Section E, Vol 69, Iss 2, Pp i4-i5 (2013) Crystallography QD901-999 article 2013 ftdoajarticles https://doi.org/10.1107/S1600536812051793 2022-12-31T15:24:00Z The bjarebyite group of minerals, characterized by the general formula BaX2Y2(PO4)3(OH)3, with X = Mg, Fe2+ or Mn2+, and Y = Al or Fe3+, includes five members: bjarebyite BaMn2+2Al2(PO4)3(OH)3, johntomaite BaFe2+2Fe3+2(PO4)3(OH)3, kulanite BaFe2+2Al2(PO4)3(OH)3, penikisite BaMg2Al2(PO4)3(OH)3, and perloffite BaMn2+2Fe3+2(PO4)3(OH)3. Thus far, the crystal structures of all minerals in the group, but penikisite, have been determined. The present study reports the first structure determination of penikisite (barium dimagnesium dialuminium triphosphate trihydroxide) using single-crystal X-ray diffraction data of a crystal from the type locality, Mayo Mining District, Yukon Territory, Canada. Penikisite is isotypic with other members of the bjarebyite group with space group P21/m, rather than triclinic (P1 or P-1), as previously suggested. Its structure consists of edge-shared [AlO3(OH)3] octahedral dimers linking via corners to form chains along [010]. These chains are decorated with PO4 tetrahedra (one of which has site symmetry m) and connected along [100] via edge-shared [MgO5(OH)] octahedral dimers and eleven-coordinated Ba2+ ions (site symmetry m), forming a complex three-dimensional network. O—H.O hydrogen bonding provides additional linkage between chains. Microprobe analysis of the crystal used for data collection indicated that Mn substitutes for Mg at the 1.5% (apfu) level. Article in Journal/Newspaper Mayo Yukon Directory of Open Access Journals: DOAJ Articles Yukon Canada Acta Crystallographica Section E Structure Reports Online 69 2 i4 i5 |
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Crystallography QD901-999 |
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Crystallography QD901-999 Michael G. Bowman Robert T. Downs Hexiong Yang Penikisite, BaMg2Al2(PO4)3(OH)3, isostructural with bjarebyite |
topic_facet |
Crystallography QD901-999 |
description |
The bjarebyite group of minerals, characterized by the general formula BaX2Y2(PO4)3(OH)3, with X = Mg, Fe2+ or Mn2+, and Y = Al or Fe3+, includes five members: bjarebyite BaMn2+2Al2(PO4)3(OH)3, johntomaite BaFe2+2Fe3+2(PO4)3(OH)3, kulanite BaFe2+2Al2(PO4)3(OH)3, penikisite BaMg2Al2(PO4)3(OH)3, and perloffite BaMn2+2Fe3+2(PO4)3(OH)3. Thus far, the crystal structures of all minerals in the group, but penikisite, have been determined. The present study reports the first structure determination of penikisite (barium dimagnesium dialuminium triphosphate trihydroxide) using single-crystal X-ray diffraction data of a crystal from the type locality, Mayo Mining District, Yukon Territory, Canada. Penikisite is isotypic with other members of the bjarebyite group with space group P21/m, rather than triclinic (P1 or P-1), as previously suggested. Its structure consists of edge-shared [AlO3(OH)3] octahedral dimers linking via corners to form chains along [010]. These chains are decorated with PO4 tetrahedra (one of which has site symmetry m) and connected along [100] via edge-shared [MgO5(OH)] octahedral dimers and eleven-coordinated Ba2+ ions (site symmetry m), forming a complex three-dimensional network. O—H.O hydrogen bonding provides additional linkage between chains. Microprobe analysis of the crystal used for data collection indicated that Mn substitutes for Mg at the 1.5% (apfu) level. |
format |
Article in Journal/Newspaper |
author |
Michael G. Bowman Robert T. Downs Hexiong Yang |
author_facet |
Michael G. Bowman Robert T. Downs Hexiong Yang |
author_sort |
Michael G. Bowman |
title |
Penikisite, BaMg2Al2(PO4)3(OH)3, isostructural with bjarebyite |
title_short |
Penikisite, BaMg2Al2(PO4)3(OH)3, isostructural with bjarebyite |
title_full |
Penikisite, BaMg2Al2(PO4)3(OH)3, isostructural with bjarebyite |
title_fullStr |
Penikisite, BaMg2Al2(PO4)3(OH)3, isostructural with bjarebyite |
title_full_unstemmed |
Penikisite, BaMg2Al2(PO4)3(OH)3, isostructural with bjarebyite |
title_sort |
penikisite, bamg2al2(po4)3(oh)3, isostructural with bjarebyite |
publisher |
International Union of Crystallography |
publishDate |
2013 |
url |
https://doi.org/10.1107/S1600536812051793 https://doaj.org/article/b59080c6fcff46a2ae8327462541318d |
geographic |
Yukon Canada |
geographic_facet |
Yukon Canada |
genre |
Mayo Yukon |
genre_facet |
Mayo Yukon |
op_source |
Acta Crystallographica Section E, Vol 69, Iss 2, Pp i4-i5 (2013) |
op_relation |
http://scripts.iucr.org/cgi-bin/paper?S1600536812051793 https://doaj.org/toc/1600-5368 doi:10.1107/S1600536812051793 1600-5368 https://doaj.org/article/b59080c6fcff46a2ae8327462541318d |
op_doi |
https://doi.org/10.1107/S1600536812051793 |
container_title |
Acta Crystallographica Section E Structure Reports Online |
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69 |
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2 |
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i4 |
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i5 |
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1766067092112539648 |