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The crystal structure of arangasite, Al2F(PO4)(SO4)·9H2O determined using low-temperature synchrotron data

Published online by Cambridge University Press:  05 July 2018

O. V. Yakubovich ,
I. M. Steele ,
V. V. Chernyshev ,
N. V. Zayakina ,
G. N. Gamyanin  and
O. V. Karimova
O. V. Yakubovich*
Affiliation:
Department of Geology, M.V. Lomonosov Moscow State University, Vorob’evy Gory, 119992 Moscow, Russia Institute of Geology of Deposits, Petrography, Mineralogy and Geochemistry, Russian Academy of Sciences, Staromonetny 35, 117019 Moscow, Russia
I. M. Steele
Affiliation:
Department of Geophysical Science, University of Chicago, 5734 S. Ellis Avenue, Chicago, IL 60637, USA
V. V. Chernyshev
Affiliation:
Department of Chemistry, M.V. Lomonosov Moscow State University, Vorob’evy Gory, 119992 Moscow, Russia
N. V. Zayakina
Affiliation:
Diamond and Precious Metal Geology Institute, Siberian Branch of the Russian Academy of Science, Lenin Avenue 39, 677980 Yakutsk, Russia
G. N. Gamyanin
Affiliation:
Institute of Geology of Deposits, Petrography, Mineralogy and Geochemistry, Russian Academy of Sciences, Staromonetny 35, 117019 Moscow, Russia
O. V. Karimova
Affiliation:
Institute of Geology of Deposits, Petrography, Mineralogy and Geochemistry, Russian Academy of Sciences, Staromonetny 35, 117019 Moscow, Russia
*
* E-mail:yakubol@geol.msu.ru
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Abstract

The crystal structure of the fibrous mineral arangasite, Al2F(PO4)(SO4)·9H2O from the Alyaskitovoje deposit, Eastern Yakutiya, Russia, was solved using low-temperature single-crystal data from synchrotron radiation and refined against F 2 to R = 9.8%. Arangasite crystallizes in the monoclinic space group P2/a, with unit-cell parameters a = 7.073(1), b = 9.634(2), c = 10.827(2) Å, β = 100.40(1)°, V = 725.7(7) Å3 and Z = 2. The positions of all the independent H atoms were obtained by difference- Fourier techniques and refined in an isotropic approximation. The arangasite crystal structure is built from one-dimensional chains of Al octahedra and PO4 tetrahedra sharing vertices, quasi-isolated SO4 tetrahedra and H2O molecules. All O atoms are involved in the system of H bonding, acting as donors and/or acceptors. Hydrogen bonding serves as the only mechanism providing linkage between the main structural fragments, thus maintaining the framework. Chains of corner-sharing Al octahedra and P tetrahedra in the arangasite structure are topologically identical to the chains built from (Fe, Al) octahedra and P tetrahedra in the crystal structure of destinezite, Fe2(OH)(PO4)(SO4)·6H2O. It has been shown that in spite of very similar chemical formulae, arangasite and sanjuanite, Al2(OH)(PO4)(SO4)·9H2O, are not isotypic.

Keywords

phosphatesulfatearangasitecrystal structuresynchrotron radiationlow temperaturehydrogen bondsdestinezitesanjuanitefluellite
Type
Research Article
Information
Mineralogical Magazine , Volume 78 , Issue 4 , August 2014 , pp. 889 - 903
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 2014

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References

Beukes, G.J., Schoch, A.E., Van der Westhuizen, W.A., Bok, L.D.C. and De Bruiyn, H. (1984) Hotsonite, a new hydrated aluminum-phosphate-sulfate from Pofadder, South Africa. American Mineralogist, 69, 979–983.Google Scholar
Brown, I.D. (1976) On the geometry of O–H_O hydrogen bonds. Acta Crystallographica, A32, 24–31.CrossRefGoogle Scholar
Brown, I.D. and Altermatt, D. (1985) Bond valence parameters obtained from a systematic analysis of the inorganic crystal structure database. Acta Crystallographica, B41, 244–247.CrossRefGoogle Scholar
Brown, I.D. and Shannon, R.D. (1973) Empirical bondstrength – bond-length curves for oxides. Acta Crystallographica, A29, 266–282.CrossRefGoogle Scholar
Bruker, (2001) SADABS. Bruker AXS Inc., Madison, Wisconsin, USA.Google Scholar
Bruker, (2007) SAINT, Bruker AXS Inc., Madison, Wisconsin, USA.Google Scholar
Colombo, F., Rius, J., Pannunzio-Miner, E.V., Pedregosa, J.C., Cami, G.E. and Carbonio, R.E. (2011) Sanjuanite: ab-initio crystal-structure solution from laboratory powder-diffraction data, complemented by FTIR spectroscopy and DT-DG analyses. The Canadian Mineralogist, 49, 835–847.CrossRefGoogle Scholar
De Bruiyn, H., Beukes, G.J., van der Westhuizen, W.A. and Tordiffe, E.A.W. (1989) Unit cell dimensions of the hydrated aluminium phosphate-sulphate minerals sanjuanite, kribergite and hotsonite. Mineralogical Magazine, 53, 385–386.CrossRefGoogle Scholar
Farrugia, L.J. (2012) WinGX and ORTEP for Windows: an update. Journal of Applied Crystallography, 45, 849–854.CrossRefGoogle Scholar
Galli, E., Brigatti, M.F., Malferrari, D., Suro, F. and DeWaele, J. (2013) Rossiantonite, Al3(PO4)(SO4)2(OH)2(H2O)10·4H2O, a new hydrated aluminum phosphate-sulfate mineral from Chimanta massif, Venezuela: description and crystal structure. American Mineralogist, 98, 1906–1913.CrossRefGoogle Scholar
Gamyanin, G.N., Zayakina, N.V. and Galenchikova, L.T. (2013) Arangasite Al2(PO4)(SO4)F·7.5H2O – a new mineral from Alyaskitovoe deposit (Eastern Yakutiya, Indigirka River basin, Russia,). Zapiski Rossiiskogo Mineralogicheskogo Obshchestva, 142(5), 21–30 [in Russian].Google Scholar
Lazebnik, K.A., Zayakina, N.V. and Supletsov, V.M. (1998) The first find of the rare mineral sanjuanite in Russia. Doklady Akademii Nauk, Earth Science Section, 362, 233–235.[in Russian].Google Scholar
Martini, J. (1978) Sasaite, a new phosphate mineral from West Driefontein Cave, Transvaal, South Africa. Mineralogical Magazine, 42, 401–404.CrossRefGoogle Scholar
Mills, S.J., Ma, C. and Birch, W.D. (2011) A contribution to understanding the complex nature of peisleyite. Mineralogical Magazine, 75, 2733–2737.CrossRefGoogle Scholar
Mills, S.J., Kampf, A.R., Dini, M. and Molina, A. (2012) Die weltbesten Destinezit-Kristalle und andere seltene Sulfate von Mejillones, Chile. Mineralien- Welt, 23(2), 73–81 [in German].Google Scholar
Peacor, D.R., Rouse, R.C., Coskren, T.D. and Essene, E.J. (1999) Destinezite ( “diadochite” ) , Fe2(PO4)(SO4)(OH)·6H2O: its crystal structure and role as a soil mineral at Alum Cave Bluff, Tennessee. Clays and Clay Minerals, 47, 1–11.CrossRefGoogle Scholar
Sheldrick, G.M. (2008) A short history of SHELX. Acta Crystallographica, A64, 112–122.CrossRefGoogle Scholar