Hostname: page-component-78c5997874-fbnjt Total loading time: 0 Render date: 2024-11-17T00:18:34.343Z Has data issue: false hasContentIssue false
  • English
  • Français

Improved powder X-ray data for cancrinites II: Liottite and sacrofanite

Published online by Cambridge University Press:  10 January 2013

Paolo Ballirano ,
Adriana Maras ,
Peter R. Buseck ,
Su Wang  and
Ann M. Yates
Paolo Ballirano
Affiliation:
Dipartimento di Scienze della Terra, Università degli studi di Roma “La Sapienza,”P. le Aldo Moro, 5, Roma, 1-00185, Italy
Adriana Maras
Affiliation:
Dipartimento di Scienze della Terra, Università degli studi di Roma “La Sapienza,”P. le Aldo Moro, 5, Roma, 1-00185, Italy
Peter R. Buseck
Affiliation:
Departments of Geology and Chemistry, Arizona State University, Tempe, Arizona 85287-1404
Su Wang
Affiliation:
Departments of Geology and Chemistry, Arizona State University, Tempe, Arizona 85287-1404
Ann M. Yates
Affiliation:
Departments of Geology and Chemistry, Arizona State University, Tempe, Arizona 85287-1404
Get access Rights & Permissions [Opens in a new window]

Abstract

Improved powder X-ray diffraction (XRD) data for liottite and sacrofanite, two members of the cancrinite group of minerals, were obtained using a rotating anode diffractometer. The cell parameters of liottite are a = 12.8575(3), c = 16.0905(6) Å, and the space group is ; the strongest reflections are at 4.834(38), 3.783(12), 3.714(100), 3.312(91), 2.784(13), 2.682(26), 2.470(17), and 2.143(27) Å. The cell parameters of sacrofanite are a = 12.8945(4) and c =74.2128(37) Å, and the possible space groups are P63/mmc, P63mc, and ; the strongest reflections are at 11.18(23), 3.757(25), 3.723(100), 3.488(27), 3.302(62), 2.651(31), 2.645(30), and 2.149(18) Å. The new data include an increased number of indexed peaks and empirical formulae that differ from the reference data (PDF 29-1187 and PDF 35-653, respectively).

Type
Research Article
Information
Powder Diffraction , Volume 10 , Issue 1 , March 1995 , pp. 13 - 19
Copyright
Copyright © Cambridge University Press 1995

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

Appleman, D. E., and Evans, H. T. Jr., (1973). “Indexing and least-squares refinement of powder diffraction data,” U.S. Nat. Tech. Inf. Serv. Document PB216188.Google Scholar
Benoit, P. H. (1987). “Adaptation to microcomputer of the Appleman-Evans program for indexing and least-squares refinement of powder-diffraction data for unit-cell dimensions,” Am. Miner. 72, 1018–1019.Google Scholar
Ballirano, P., Maras, A., Buseck, P. R., Wang, S., and Yates, A. M. (1994). “Improved powder X-ray data for cancrinites I: Afghanite,” Powder Diffr. 9, 68–73.CrossRefGoogle Scholar
Burattini, E., Cappuccio, G., Maistrelli, P., and Simeoni, S. (1992). “EPDIC-2,” Enschede. (abs.).Google Scholar
Burragato, F., Parodi, G. C., and Zanazzi, P. F. (1980). “Sacrofanite a new mineral of the cancrinite group,” N. Jb. Miner. Abh. 140, 102–110.Google Scholar
Leoni, L., Mellini, M., Merlino, S., and Orlandi, P. (1979). “Cancrinite-like mineral: new data and crystal chemical considerations,” Rend. S.I.M.P. 35, 713–719.Google Scholar
Merlino, S., and Mellini, M. (1976). “Crystal structures of cancrinite-like minerals,” Zeolite '76. Program and Abstracts, Tucson, Arizona, 47.Google Scholar
Merlino, S., and Orlandi, P. (1977). “Liottite, a new mineral in the cancrinite-davyne group,” Am. Miner. 62, 321–326.Google Scholar
Parodi, G. C. (1982). “Infrared spectroscopy of minerals: the cancrinite group,” Tesi di laurea in Scienze Geologiche (not published), Università degli Studi di Roma “La Sapienza” (in Italian).Google Scholar
Rinaldi, R., and Wenk, H.-R. (1979). “Stacking variations in cancrinite minerals,” Acta Cryst. A 35, 825–828.CrossRefGoogle Scholar
Smith, G. S., and Snyder, R. L. (1979). “FN: A criterion for rating powder diffraction patterns and evaluating the reliability of powder-pattern indexing,” J. Appl. Cryst. 12, 60.CrossRefGoogle Scholar
Wolff, de P. M. (1968). “A simplified criterion for the reliability of a powder pattern indexing,” J. Appl. Cryst. 1, 108.CrossRefGoogle Scholar