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The crystal structure of perloffite

Published online by Cambridge University Press:  05 July 2018

P. Elliott and
A. C. Willis
P. Elliott
Affiliation:
Tectonics, Resources and Exploration (TRaX), School of Earth and Environmental Sciences, The University of Adelaide, Adelaide, South Australia 5005, AustraliaSouth Australian Museum, North Terrace, Adelaide, South Australia 5000, Australia
A. C. Willis
Affiliation:
Research School of Chemistry, The Australian National University, Australian Capital Territory 0200, Australia
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Abstract

The structure of perloffite, ideally BaMn2 2+Fe2 3+(PO4)3(OH)3, has been solved and refined from single-crystal X-ray data collected on a Sr-bearing sample from the Spring Creek copper mine, near Wilmington, South Australia. A fragment of the crystal used for the collection of the X-ray intensity data was analysed by electron microprobe. The resulting unit formula is (Ba1.00,Sr0.03 Σ1.03) (Mn2+ 1.15,Fe2+ 0.76Ca0.05Mg0.02,Na0.01)Σ1.99(Fe3+ 1.94,Al0.06)Σ2.00(PO4)2.99(OH)3.04. The structure is monoclinic. space group P21/m, a = 9.2425(18), b = 12.470(3), c = 5.002(1) Å, 0 = 100.19(3)°, V = 567.41(19) Å3, Z = 2, and was refined to R1 = 4.71% for 1568 unique observed reflections. The X site is [11]-coordinated and is occupied by dominant Ba and minor Sr, with an <X—O< distance of 2.953 Å. The Ml site is octahedrally coordinated and is occupied by Mn2+and Fe2+ plus minor Ca, Mg and Na with an observed <M1—O> distance of 2.208 Å. The M2 site is also octahedrally coordinated and is occupied by Fe3+ plus minor Al with a <M2—O> distance of 2.018 A. Perloffite is isostructural with other members of the bjarebyite group. Edge-linked [M22O6(OH)4] dimers link via corners to form chains along [010]. Chains are decorated with PO4 tetrahedra and link in the a direction via [M1O5(OH)] octahedra and (Ba,Sr) atoms to form a complex framework. The H2 atom hydrogen-bonds strongly to the O3 anion, providing additional linkage between chains.

Keywords

perloffitecrystal structureX-ray diffractionbjarebyite group

Information

Type
CNMNC Newsletter 8
Information
Mineralogical Magazine , Volume 75 , Issue 2 , April 2011, pp. 317 - 325
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 2011

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References

Baur, W.H. (1981) Interatomic distance predictions for computer simulation of crystal structures. Pp. 31-52 in: Structure and Bonding in Crystals Vol. II (O’Keeffe, M. and Navrotsky, A., editors). Academic Press, New York.CrossRefGoogle Scholar
Beyer, B.D. and Elliott, P. (1996) Minerals from the Spring Creek mine, near Wilmington, South Australia. Australian Journal of Mineralogy, 2, 57-70.Google Scholar
Birch, B. and Mumme, W.G. (1988) Hentschelite and perloffite from the Spring Creek Copper Mine, South Australia. Mineralogical Magazine, 52, 408-411.CrossRefGoogle Scholar
Brown, I.D. (1996) VALENCE: a program for calculating bond valences. Journal of Applied Crystallography, 29, 479-480.CrossRefGoogle Scholar
Brown, I.D. and Altermatt, D. (1985) Bond-valence parameters obtained from a systematic analysis of the inorganic crystalstructure database. Acta Crystallographica, B41, 244–247.CrossRefGoogle Scholar
Cooper, M. and Hawthorne, F.C. (1994) Refinement of the crystalstr ucture of kulanite. The Canadian Mineralogist, 32, 15-19.Google Scholar
Coppens, P. (1970) Crystallographic Computing (Ahmed, F.R., Hall, S.R. and Huber, C.P., editors). Munksgaard, Copenhagen, pp. 255-270.Google Scholar
Huminicki, D.M.C. and Hawthorne, F.C. (2002) The crystalchemistry of the phosphate minerals. Pp. 123-253 in: Phosphates: Geochemical , Geobiological, and Materials Importance (Kohn, M.J., Rakovan, J. and Hughes, J.M., editors). Reviews in Mineralogy and Geochemistry, 48, Mineralogical Society of America, Washington, D.C. CrossRefGoogle Scholar
Kampf, A.R. (1977) A new mineral: perloffite, the Fe3+ analogue of bjarebyite. Mineralogical Record, 8, 112-114.Google Scholar
Kharisun, , Taylor, M.R, Bevan, D.J.M. and Pring, A. (1996) The crystalstructure of carminite: refinement and bond valence calculations. Mineralogical Magazine, 60, 805-811.CrossRefGoogle Scholar
Kolitsch, U., Taylor, M.R., Fallon, G. and Pring, A. (1999a) Spring creekite, BaV3+ 3 (PO4)2(OH,H2O)6, a new member of the crandallite group, from the Spring Creek mine, South Australia: the first natural V3+-member of the alunite family and its crystal structure. Neues Jahrbuch für Mineralogie, Monatshefte, 529–544.Google Scholar
Kolitsch, U., Pring, A. and Elliott, P. (1999b) An update on the mineralogy of the Spring Creek mine, South Australia, including the new species springcreekite, bariosincosite and tomaite. Australian Journal of Mineralogy, 5, 55-62.Google Scholar
Kolitsch, U., Pring, A. and Tiekink, E.R.T. (2000) Johntomaite, a new member of the bjarebyite group of barium phosphates: description and structure refinement. Mineralogy and Petrology, 70, 1-14.CrossRefGoogle Scholar
Mandarino, J.A. and Sturman, B.D. (1976) Kulanite, a new barium iron aluminum phosphate from the Yukon Territory, Canada. The Canadian Mineralogist, 14, 127-131.Google Scholar
Mandarino, J.A., Sturman, B.D. and Corlett, M.I. (1977) Penikisite, the magnesium analogue of kulanite, from Yukon Territory. The Canadian Mineralogist, 15, 393-395.Google Scholar
Moore, P.B. and Araki, T. (1974) Bjarebyite, Ba(Mn,Fe)2+ 2 Al2(OH)3[PO4]3: its atomic arrangement. American Mineralogist, 59, 567-572.Google Scholar
Moore, P.B. and Araki, T. (1975) Palermoite, SrLi2[Al4(OH)4(PO4)4]: its atomic arrangement and relationship to carminite, Pb2[Fe4(OH)4(AsO4)4]. American Mineralogist, 60, 460-465.Google Scholar
Moore, P.B. Lund, D.H. and Keester, K.L. (1973) Bjarebyite, (Ba,Sr)(Mn,Fe,Mg)2Al2(OH)3(PO4)3, a new species. Mineralogical Record, 4, 282-285.Google Scholar
Mücke, A. (1987) Sekundäre Phosphatmineralien (Perloffit, Brasilianit, Mineralien der Kingsmountit-Gruppe) sowie Brochantit und die Zwieselit-Muschketoffit-Stiptomelan-Pyrosmalith-Paragenese der 115-m-Sohle des Hagendorfer Pegmatits. Aufschluss, 38, 5-28.(in German).Google Scholar
Pouchou, J.L. and Pichoir, F. (1985) “PAP” ϕ (ρZ) procedure for improved quantitative microanalysis. Pp. 104-106 in: Microbeam Analysis (Armstrong, J.T., editor). San Francisco Press, California, USA.Google Scholar
Pring, A., Kolitsch, U., Birch, W.D., Beyer, B.D., Elliott, P., Ayyappan, P. and Ramanan, A. (1999) Bariosincosite, a new hydrated barium vanadium phosphate, from the Spring Creek Mine, South Australia. Mineralogical Magazine, 63, 735-741.CrossRefGoogle Scholar
Shannon, R.D. (1976) Revised effective ionic radii and systematic studies of interatomic distances in halides and chalcogenides. Acta Crystallographica, A32, 751–767.CrossRefGoogle Scholar
Shape Software (1997) ATOMS for Windows and Macintosh V 4.0. Kingsport, Tennessee, USA.Google Scholar
Sheldrick, G.M. (2008) A short history of SHELX. Acta Crystallographica, A64, 112–122.CrossRefGoogle Scholar
Wilson, A.J.C., editor (1992) International Tables for Crystallography, vol. C, 883 p. Kluwer Academic Publishers, Dordrecht, The Netherlands.Google Scholar