Hostname: page-component-cb9f654ff-lqqdg Total loading time: 0 Render date: 2025-08-26T08:21:41.853Z Has data issue: false hasContentIssue false
  • English
  • Français

New data on georgiadesite

Published online by Cambridge University Press:  05 July 2018

Roland C. Rouse  and
Pete J. Dunn
Roland C. Rouse
Affiliation:
Department of Geological Sciences, University of Michigan, Ann Arbor, Michigan 48109, USA
Pete J. Dunn
Affiliation:
Department of Mineral Sciences, Smithsonian Institution, Washington DC 20560, USA
Get access Rights & Permissions [Opens in a new window]

Abstract

The chemistry and crystallography of type georgiadesite from Laurion, Greece, have been reexamined using electron microprobe analysis along with powder and single-crystal X-ray diffraction. Georgiadesite is monoclinic, P21/c, with a = 13.803(10), b = 7.910(2), c = 10.812(4) Å, and β = 102.68(3)°. No twinning was observed. The probable chemical formula is either Pb16(AsO4)4Cl14O2(OH)2 or Pb16(AsO4)4Cl14(OH)6. The calculated densities for these formulae are 6.39 and 6.44 g/cm3, respectively, compared to a measured value of 6.3 + 0.3 g/cm3

Information

Type
Research Article
Information
Mineralogical Magazine , Volume 47 , Issue 343 , June 1983 , pp. 219 - 220
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1983

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.)

Article purchase

Temporarily unavailable

References

Dunn, P. J., and Rouse, R. C. (1980) Mineral. Record 11, 299–301.Google Scholar
Kohlberger, W. (1976) Ibid. 7, 114–125.Google Scholar
Lacroix, A., and de Schulten, A. (1907) C. R. Acad. Sci. Paris 145, 783–5.Google Scholar
Lacroix, A., and de Schulten, A. (1908) Bull. Soc.fr. Mineral. 31, 79–90.Google Scholar
Palache, C, Berman, H., and Frondel, C. (1951) Dana's System of Mineralogy, 7th edn., Vol. 2, 791–2. New York (John Wiley and Sons).Google Scholar
Schnorrer-Köhler, G., Standfuss, K., and Standfuss, L. (1981) Aufschluss, 32, 165–9.Google Scholar