Hostname: page-component-586b7cd67f-t7czq Total loading time: 0 Render date: 2024-11-26T10:16:31.679Z Has data issue: false hasContentIssue false
  • English
  • Français

The crystal structure of gatehouseite

Published online by Cambridge University Press:  05 July 2018

P. Elliott  and
A. Pring
P. Elliott*
Affiliation:
Tectonics, Resources and Exploration (TRaX), School of Earth and Environmental Sciences, The University of Adelaide, North Terrace, Adelaide, South Australia 5005, Australia South Australian Museum, North Terrace, Adelaide, South Australia 5000, Australia
A. Pring
Affiliation:
South Australian Museum, North Terrace, Adelaide, South Australia 5000, Australia
*
*E-mail: [email protected]
Get access Rights & Permissions [Opens in a new window]

Abstract

The crystal structure of the manganese phosphate mineral gatehouseite, ideally Mn52+(PO4)2(OH)4, space group P212121, a = 17.9733(18), b = 5.6916(11), c = 9.130(4) Å, V= 933.9(4) Å3, Z = 4, has been solved by direct methods and refined from single-crystal X-ray diffraction data (T = 293 K) to an R index of 3.76%. Gatehouseite is isostructural with arsenoclasite and with synthetic Mn52+(PO4)2(OH)4. The structure contains five octahedrally coordinated Mn sites, occupied by Mn plus very minor Mg with observed <Mn—O> distances from 2.163 to 2.239 Å. Two tetrahedrally coordinated P sites, occupied by P, Si and As, have <P—O> distances of 1.559 and 1.558 Å. The structure comprises two types of building unit. A strip of edge-sharing Mn(O,OH)6 octahedra, alternately one and two octahedra wide, extends along [010]. Chains of edge- and corner-shared Mn(O,OH)6 octahedra coupled by PO4 tetrahedra extend along [010]. By sharing octahedron and tetrahedron corners, these two units form a dense three-dimensional framework, which is further strengthened by weak hydrogen bonding. Chemical analyses by electron microprobe gave a unit formula of (Mn4.99Mg0.02)Σ5.01(P1.76Si0.07(As0.07)Σ2.03O8(OH)3.97.

Keywords

gatehouseitemanganesephosphatecrystal structure
Type
Research Article
Information
Mineralogical Magazine , Volume 75 , Issue 6 , December 2011 , pp. 2823 - 2832
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 2011

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Anderson, J.B., Shoemaker, G.L., Kostiner, E. and Ruszala, E.A. (1977) The crystal structure of synthetic Cu5(PO4)2(OH)4, a polymorph of pseudomalachite. American Mineralogist, 62, 115-121.Google Scholar
Barbier, J. (1996) The crystal structure of Ni5(AsO4)2(OH)4 and its comparison to other M5(XO4)2(OH)4 compounds. European Journal Mineralogy, 8, 77-84.CrossRefGoogle Scholar
Basso, R., Luchetti, G. and Zefiro, L. (1992) Reppiaite, Mn5(OH)4(VO4)2, a new mineral from Val Graveglia (Northern Apennines, Italy). Zeitschrift für Kristallographie, 201, 223-224.Google 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 crystal structure database. Acta Crystallographica, B41, 247-.Google Scholar
Brugger, J., Elliott, P. and Meisser, N. (2011) Argandite, Mn7(VO4)2(OH)8, the V analogue of allactite from the metamorphosed Mn ores at Pipji, Turtmann Valley, Switzerland. American Mineralogist, (in press).Google Scholar
Burns, P.C., Cooper, M.A. and Hawthorne, F.C. (1994) Jahn-Teller distorted Mn3+O6 octahedra in fredrikssonite, the fourth polymorph of Mg2Mn3+(BO3)O2 . The Canadian Mineralogist, 32, 397-403.Google Scholar
Chopin, C., Ferraris, G., Prencipe, M., Brunet, F. and Medenbach, O. (2001) Raadeite, Mg7(PO4)2(OH)8: a new dense-packed phosphate, from Modum (Norway). European Journal of Mineralogy, 13, 319-327.CrossRefGoogle Scholar
Foley, J.A., Hughes, J.M. and Lange, D. (1997) The atomic arrangement of brackebuschite, redefined as Pb2(Mn3+,Fe3+)(VO4)2(OH), and comments on Mn3+ octahedra. The Canadian Mineralogist, 35, 1027–1033.Google Scholar
Francis, G. A. (2010) Minerals of Iron Monarch. OneSteel, Whyalla, Australia, 165 pp.Google Scholar
Ghose, S. (1963) The crystal structure of pseudomalachite. Acta Crystallographica, 16, 124-128.CrossRefGoogle Scholar
Huminicki, D.M.C. and Hawthorne, F.C. (2002) The crystal chemistry 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 DC, and the Geochemical Society, St. Louis, Missouri, USA.CrossRefGoogle Scholar
Moore, P.B. (1968) Crystal chemistry of the basic manganese arsenate minerals: II. The crystal structure of allactite. American Mineralogist, 53, 733-741.Google Scholar
Moore, P.B. and Molin-Case, J. (1971) Crystal chemistry of the basic manganese arsenates: V. Mixed manganese coordination in the atomic arrangement of arsenoclas it e. American Mineralogist, 56, 1539-1552.Google Scholar
Oxford Diffraction (2009) CrysAlis PRO. Oxford Diffraction Ltd, Yarnton, England.Google Scholar
Pouchou, J.L. and Pichoir, F. (1985) “PAP” φ(ρ) procedure for improved quantitative microanalysis. Pp. 104-106 in: Microbeam Analysis. San Francisco Press, San Francisco, USA.Google Scholar
Pring, A. and Birch, W.D. (1993) Gatehouseite, a new manganese hydroxy phosphate from Iron Monarch, South Australia. Mineralogical Magazine, 57, 309-313.CrossRefGoogle Scholar
Pring, A., Francis, G. and Birch, W.D. (1989) Pyrobelonite, arsenoklasite, switzerite and other recent finds at Iron Monarch, South Australia. Australian Mineralogist, 4, 49-55.Google Scholar
Pring, A., Francis, G. and Birch, W.D. (1992) Nissonite, namibite, and other additions to the mineral suite from Iron Monarch, South Australia. Australian Mineralogist, 6, 31-39.Google Scholar
Pring, A., Kolitsch, U. and Francis, G. (2000) Additions to the mineralogy of the Iron Monarch deposit, Middleback Ranges, South Australia. Australian Journal of Mineralogy, 6, 9-23.Google Scholar
Pring, A., Kolitsch, U. and Birch, W.D. (2005) Description and unique crystal structure of waterhouseite, a new hydroxy manganese phosphate species from the Iron Monarch deposit, Middleback Ranges, South Australia. The Canadian Mineralogist, 43, 1401-1410.CrossRefGoogle Scholar
Ruszala, F.A., Anderson, J.B. and Kostiner, E. (1977) Crystal structures of two isomorphs of arsenoclasite: Co5(PO4)2(OH)4 and Mn5(PO4)2(OH)4 . Inorganic chemistry, 16, 2417-2422.CrossRefGoogle Scholar
Shannon, R.D. (1976) Revised effective ionic radii and systematic studies of interatomic distances in halides and chalcogenides. Acta Crystallographica, A32, 767-.Google 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, 122-.Google Scholar
Shoemaker, G.L., and Anderson, J.A. and Kostiner, E. (1977) Refinement of the crystal structure of pseudomalachite. American Mineralogist, 62, 1042-1048.Google Scholar
Shoemaker, G.L., and erson, J.A. and Kostiner, E. (1981) The crystal structure of a third polymorph of Cu5(PO4)2(OH)4 . American Mineralogist, 66, 169-175.Google Scholar
Sieber, N., Hofmeister, W., Tillmanns, E. and Abraham, K. (1984) Neue Mineraldaten für Kupferphosphate und-arsenate von Reichenbach. Fortschritte der Mineralogie, 62, 231-233.Google Scholar
Sieber, N.H.W., Tillmanns, E. and Medenbach, O. (1987) Hentschelite, CuFe2(PO4)2(OH)2, a new member of the lazulite group, and reichenbachite, Cu5(PO4)2(OH)4, a polymorph of pseudomalachite, two new copper phosphate minerals from Reichenbach, Germany. American Mineralogist, 72, 404-408.Google Scholar
Wilson, A.J.C. (editor) (1992) International Tables for Crystallography. Volume C: Mathematical, Physical and Chemical Tables. Kluwer Academic Publishers, Dordrecht, The Netherlands.Google Scholar