1986/12/01 by R. C. Peterson, I. Miller, I. J. Miller · 1 citation
Earth and Planetary Sciences · Materials Science · #Crystal Structures and Properties #Mineralogy and Gemology Studies #X-ray Diffraction in Crystallography
paper · doi:10.1180/minmag.1986.050.358.19
crossref issued 1986/12/01 · crossref published 1986/12/01 · crossref published-print 1986/12/01 · openalex publication_date 1986/12/01 · crossref created 2006/12/07 · crossref published-online 2018/07/05 · crossref deposited 2021/02/05 · openalex created_date 2025/10/10 · crossref indexed 2026/07/29 · openalex updated_date 2026/07/30
Abstract The crystal structure of a freibergite (Ag-tetrahedrite) from Keno Hill, Yukon, Canada, and a tetrahedrite from Turquetil Lake, NWT, Canada, have been refined. The freibergite, Cu 5.84 Ag 4.22 Fe 1.59 Zn 0.43 Sb 4.10 AS 0.13 S 13 , a = 10.610(2) Å, and the tetrahedrite, Cu 10.24 Fe 1.03 Zn 0.97 Ag 0.05 Sb 3.66 As 0.28 S 13 , a = 10.364(2) Å, were both refined in space group I4̄3m. The refinements confirm that Ag does occupy the threefold coordinated metal site as first described by Kalbskopf (1972) and that Fe also occupies this site. The structural changes accompanying Ag substitution are described and a model to explain the upper limit of substitution at four atoms of silver for thirteen atoms of sulphur is proposed.