Hostname: page-component-586b7cd67f-vdxz6 Total loading time: 0 Render date: 2024-11-28T01:04:00.008Z Has data issue: false hasContentIssue false
  • English
  • Français

Reappraisal of the space group of bafertisite

Published online by Cambridge University Press:  10 January 2013

Zhuming Yang ,
Gordon Cressey  and
Mark Welch
Zhuming Yang*
Affiliation:
Department of Mineralogy, The Natural History Museum, London, United Kingdom
Gordon Cressey
Affiliation:
Department of Mineralogy, The Natural History Museum, London, United Kingdom
Mark Welch
Affiliation:
Department of Mineralogy, The Natural History Museum, London, United Kingdom
*
a)Correspondence to: Zhuming Yang, Institute of Geology, The Chinese Academy of Sciences, P.O. Box 9825, Beijing 100029, China.
Get access Rights & Permissions [Opens in a new window]

Abstract

Bafertisite, Ba(Fe, Mn)2Ti(Si2O7)O(OH, Cl)2, has been reported as belonging to three space groups, i.e., Pmmn, P21/m, and Cm. The samples of bafertisite from the original locality Bayan Obo, Inner Mongolia, and from Jiangsu Province, China, were reinvestigated by X-ray methods. On the basis of single-crystal photographs, Pmmn could be ruled out and the relationship between a subcell in P21/m and the true cell in Cm deduced. The transformation matrix from the subcell to the true cell is 002/02¯0/101¯. Using the X-ray powder data, the refined true unit cell parameters in space group Cm are: a=10.612(3), b=13.637(7), c=12.464(2) Å, β=119.49(2)° for Bayan Obo sample, and a=10.633(6), b=13.67(1), c=12.465(5) Å, β=119.55(4)° for the Jiangsu sample. The 00l-reflections, which are rather prominent due to preferred orientation, can only be explained by our new unit cell.

Keywords

bafertisitespace groupBayan Obo (China)
Type
Research Article
Information
Powder Diffraction , Volume 14 , Issue 1 , March 1999 , pp. 22 - 24
Copyright
Copyright © Cambridge University Press 1999

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

Ferraris, G., Ivaldi, G., Khomyakov, A. P., Soboleva, S. V., Belluso, E., and Pavese, A. (1996). “Bafertisite, a layer titanosilicate member of a polysomatic series including mica,” Eur. J. Mineral. 8, 241–249.CrossRefGoogle Scholar
Ganzeev, A. A., Efimov, A. F., and Lyubomivo, G. V. (1972). “Maganiferous bafertisite from the Burpala Massif (Northern Baikal),” Am. Mineral. 57, 1005.Google Scholar
Guan, Y. H., Simonov, V. I., and Belov, N. V. (1963). “Crystal structure of bafertisite, BaFe 2Ti(Si 2O 7)(O, OH)2,” Dokl. Akad. Nauk SSSR 419, 1416–1419.Google Scholar
Kan, Xuemin, Zhang, Enlin, and Li, Yirong (1982). “Moessbauer study of bafertisite and jinshajiangite,” Acta Mineralogica Sinica 2, 149–153(in Chinese).Google Scholar
Larsen, A. C., and Von Dreele, R. B. (1997). “General structure analysis system (GSAS),” LANSCE MS H805, Los Alamos National Laboratory, Los Alamos, NM 87545.Google Scholar
Mauger, R. L. (1983). “Bafertisite and an unidentified BaCaMnFeTi silicate from Fountain Quarry, Pitt County, North Carolina,” Southeastern Geology 24, 13–20.Google Scholar
Peng, Chi-Jui (1959). “The discovery of several new minerals of rare elements,” Scientia Geologica Silica 10,289(in Chinese); Am. Mineral. 45, 1317(1960).Google Scholar
Peng, Z. Z., and Shen, J. C. (1963). “The crystal structure of bafertisite,” Chin. Sci. Bull. 6, 66–68(in Chinese).Google Scholar
Roberts, W. L., Rapp, G. R., Jr., and Weber, J. (1974). Encyclopedia of Minerals (Van Nostrand Reinhold, New York), p. 47.Google Scholar
Semenov, E., and Chang, P. S. (1959). “New mineral—Bafertisite,” Science Record 3, 653–655; Am. Mineral. 45, 754(1960).Google Scholar
Sokolova, E. V., Egorov-Tismenko, Yu. K., Pautov, L. A., and Belakovsky, D. I. (1989). “The structure of a native Ba-titanosilicate BaMn 2TiO[Si 2O 7](OH)2—A member of the homologous series seidozerite-nacaphite,” Zapiski Vsesoyuznogo Mineralogicheskogo Obshchesta 118, 81–84.Google Scholar
Vrana, S., Rieder, M., and Gunter, M. E. (1992). “Hejtmanite, a manganese-dominant analogue of bafertisite, a new mineral,” Eur. J. Mineral. 4, 35–43.CrossRefGoogle Scholar
Wu, Gongbao, Wang, Youtong, Zhang, Shujun, and Ding, Haohua (1982). “Moessbauer study of bafertisite,” Acta Petrologica Mineralogica et Analytica 1, 23–29(in Chinese).Google Scholar
Zhang, Peishan, Yang, Zhuming, Tao, Kejie, and Yang, Xueming (1995). Mineralogy and Geology of Rare Earths in China (Science Press, Beijing, China), p. 155.Google Scholar
Zhang, Shujun, Ding, Haohao, Guo, Zongshan, and Ye, Qingtong (1982). “New data on bafertisite,” Geological Rev. 28, 250–257.Google Scholar