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GEOREF RECORD

The crystal structure of Cu (sub 2) Pb (sub 6) Bi (sub 8) S (sub 19)

Dan Topa, Emil Makovicky, Tonci Balic-Zunic and Peter Berlepsch
The crystal structure of Cu (sub 2) Pb (sub 6) Bi (sub 8) S (sub 19)
European Journal of Mineralogy (August 2000) 12 (4): 825-833

Abstract

The crystal structure of natural Cu (sub 2) Pb (sub 6) Bi (sub 8) S (sub 19) , space group C2/m, a = 27.64Aa, b = 4.05Aa, c = 20.74Aa, beta = 131.26 degrees , has been determined and refined to the value of R = 0.05 from 1488 reflections with I>2sigma (sub 1) obtained on four-circle diffractometer equipped with a CCD area detector. It is composed of en echelon staggered fragments of (100) (sub PbS) sulfide layers which are two atomic layers thick and alternate with periodically sheared (111) (sub PbS) layers; these are two octahedra thick. It is built from Pb coordination octahedra and bicapped trigonal prisms combined with Bi in square pyramidal/asymmetric octahedral coordinations. Cu occurs in paired tetrahedra interconnecting the staggered (100) (sub PbS) fragments. Cu (sub 2) Pb (sub 6) Bi (sub 8) S (sub 19) forms a homologous series with Cu (sub 2) Pb (sub 3) Bi (sub 8) (S, Se) (sub 16) (junoite) in which the sheared (111) (sub PbS) layers are one octahedron thick. Cu (sub 2) Pb (sub 6) Bi (sub 8) S (sub 19) is a new sulfosalt from Felbertal, Austria.


ISSN: 0935-1221
Serial Title: European Journal of Mineralogy
Serial Volume: 12
Serial Issue: 4
Title: The crystal structure of Cu (sub 2) Pb (sub 6) Bi (sub 8) S (sub 19)
Affiliation: University of Copenhagen, Geological Institute, Copenhagen, Denmark
Pages: 825-833
Published: 200008
Text Language: English
Publisher: Schweizerbart'sche Verlagsbuchhandlung (Naegele u. Obermiller), Stuttgart, Federal Republic of Germany
References: 12
Accession Number: 2001-025992
Categories: Mineralogy of non-silicates
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 5 tables
Secondary Affiliation: University of Salzburg, AUT, Austria
Country of Publication: Germany
Secondary Affiliation: GeoRef, Copyright 2020, American Geosciences Institute.
Update Code: 200109
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