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Quetzalcoatlite: A new octahedral-tetrahedral structure from a 2 × 2 × 40 μm^3 crystal at the Advanced Photon Source-GSE-CARS Facility

Burns, Peter C. and Pluth, Joseph J. and Smith, Joseph V. and Eng, Peter and Steele, Ian and Housley, Robert M. (2000) Quetzalcoatlite: A new octahedral-tetrahedral structure from a 2 × 2 × 40 μm^3 crystal at the Advanced Photon Source-GSE-CARS Facility. American Mineralogist, 85 (3-4). pp. 604-607. ISSN 0003-004X.

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The structure of quetzalcoatlite, Zn_6Cu_3(TeO_3)_2O_6(OH)_6(Ag_xPby)Cl_(x+2y), x + y ≤ 2, Z = 1, was solved and refined using data collected at the Advanced Photon Source-GSE-CARS facility, using a 2 × 2 ×40 μm^3 single crystal. The structure is trigonal, space group P3̅1m, a = 10.145(1), c = 4.9925(9) Å, V = 445.0(1) Å^3, and was refined to R = 5.1 for 395 unique observed reflections. Te6+O6 octahedra and Jahn-Teller distorted Cu^(2+)O_4(OH)_2 octahedra share edges to form layers parallel to (001), and ZnO_2(OH)_2 tetrahedra share vertices to form six-member rings parallel to (001). Layers of octahedra and tetrahedra alternate along c, and form a new framework structure by vertex sharing. Channels through the framework parallel to c are occupied by Ag, Pb, and Cl ions. Electron microprobe analysis revealed Ag and Cl overlooked in the original microchemical analysis. Up to one-third of the Ag was substituted by Pb, and a Pb-rich analog may exist.

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Additional Information:© 2000 American Mineralogist. Manuscript received March 22, 1999. Manuscript accepted December 6, 1999. Paper handled by Simon A. T. Redfern. The GSE-CARS microstructure facility is operated by the Center for Advanced Radiation Sources at the University of Chicago, and is funded primarily by NSF-EAR-9317772 (Mark Rivers) and DOE F602-94ER14466 (Stephen Sutton), and partially by various University of Chicago, State of Illinois, Keck Foundation, and Australia ANSTO programs. R.H.M. expresses his appreciation to the San Bernardino Museum Earth Sciences Division and its many volunteers for documenting the Blue Bell Claims area and to Bob and Suger White who led the trip on which the study samples were collected.
Funding AgencyGrant Number
Department of Energy (DOE)F602-94ER14466
University of ChicagoUNSPECIFIED
State of IllinoisUNSPECIFIED
Keck FoundationUNSPECIFIED
Issue or Number:3-4
Record Number:CaltechAUTHORS:20140521-150726957
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Official Citation: Peter C. Burns, Joseph J. Pluth, Joseph V. Smith, Peter Eng, Ian Steele, and Robert M. Housley Quetzalcoatlite: A new octahedral-tetrahedral structure from a 2 × 2 × 40 μm3 crystal at the Advanced Photon Source-GSE-CARS Facility American Mineralogist, , v. 85, p. 604-607
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:45875
Deposited By: Ruth Sustaita
Deposited On:27 May 2014 17:45
Last Modified:03 Oct 2019 06:37

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