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Argentobaumhauerite: name, chemistry, crystal structure, comparison with baumhauerite, and position in the Lengenbach mineralization sequence

Published online by Cambridge University Press:  02 January 2018

Dan Topa  and
Emil Makovicky
Dan Topa*
Affiliation:
Natural History Museum-Vienna, Burgring 7, A-1010 Vienna, Austria
Emil Makovicky
Affiliation:
Institute for Geoscience and Mineral Resources Management, University of Copenhagen, Østervoldgade 10, DK-1350, Copenhagen K, Denmark
*
E-mail: [email protected]
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Abstract

The crystal structure of argentobaumhauerite is reported for the first time from a sulfosalt aggregate from Lengenbach deposit, Binntal, Switzerland. The chemical formula of argentobaumhauerite, calculated in agreement with the results of structure determination is Cu0.06Ag1.20Tl0.18Pb21.46Sb0.56As32.28 S72.26. The difference from the idealized baumahuerite formula, Pb12As16S36, and from the formula of Ag – , Tl- and Sb-free baumhauerite from Moosegg, Austria, Pb11.80As16.28S35.92, expresses the Ag + As and Tl + As substitution for 2Pb. Argentobaumhauerite is triclinic, a = 7.9053(10), b = 8.4680(10), c = 44.4102(53) Å, α = 84.614(2), β = 86.469(2), γ = 89.810(2)°. V(cell) = 2954.16 Å3, space group P1. Baumhauerite Pb11.80As16.28S35.92 from Moosegg is triclinic, a = 7.884(4), b = 8.345(4), c = 22.811(11) Å, α = 90.069(8), β = 97.255(8), γ = 90.082(8)°, V(cell) = 1488.8(13) Å3, space group P1. Both minerals represent the N 1,2 = 3;4 = 3.5 member of the sartorite homologous series, with As-rich slabs separated by zigzag layers of trigonal coordination prisms of lead. In argentobaumhauerite the sequence of alternating N = 3 and N = 4 slabs of baumhauerite is further modified by alternation of two distinct types of N = 4 slabs, those with Pb present in the slab interior and those with the interior Pb substituted by Ag + As. The length and arrangement of crankshaft chains of short As–S bonds differs between different slabs, and especially between the N = 4 slabs of baumhauerite and argentobaumhauerite. The name 'argentobaumhauerite' replaces the preliminary name 'baumhauerite-2a' (IMA-CNMNC; accepted proposal 15-F).

Keywords

baumhaueriteargentobaumhaueritecrystal structureAg + As substitutionTl + As substitutionmineralization sequenceLengenbach
Type
Research Article
Information
Mineralogical Magazine , Volume 80 , Issue 5 , August 2016 , pp. 819 - 840
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 2016

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References

Berlepsch, P., Makovicky, E. and Balic-Zunic, T (2001) Crystal chemistry of sartorite homologues and related sulfosalts. Neues Jahrbuch für Mineralogie Abhandlungen, 176, 45–66.CrossRefGoogle Scholar
Berlepsch, P., Armbruster, T., Makovicky, E. and Topa, D. (2003) Another step toward understanding the true nature of sartorite: Determination and refinement of a nine-fold superstructure. American Mineralogist, 88, 450–461.CrossRefGoogle Scholar
Berlepsch, P., Armbruster, T and Topa, D. (2002) Structural and chemical variations in rathite, Pb8Pb4_x(Tl2As2)x(Ag2As2)As16S40: modulations of a parent structure. Zeitschrift für Kristallographie, 217, 1–10.Google Scholar
Biagioni, C., Orlandi, P., Moëlo, Y and Bindi, L. (2014) Lead-antimony sulfosalts from Tuscany (Italy). XVI. Carducciite, (AgSb)Pb6(As,Sb)8S20, a new Sb-rich isotype of rathite from the Pollone mine, Valdicastello Carducci: occurrence and crystal structure. Mineralogical Magazine, 78, 1775—1793.Google Scholar
Bindi, L., Nestola, F., Makovicky, E., Guastoni, A. and De Battisti, L. (2014) Tl-bearing sulphosalts from the Lengenbach quarry, Binn valley, Switzerland: Philrothite, TlAs3S5. Mineralogical Magazine, 78, 1–9.CrossRefGoogle Scholar
Bruker AXS (1997)XPREP, Version 5.1, Bruker AXS, Inc., Madison, Wisconsin, USA.Google Scholar
Bruker AXS (1998a)SMART, Version 5.0, Bruker AXS, Inc., Madison, Wisconsin, USA.Google Scholar
Bruker AXS (1998b)SAINT, Version 5.0, Bruker AXS, Inc., Madison, Wisconsin, USA.Google Scholar
Engel, P. andNowacki, W (1969) Die Kristallstruktur von Baumhauerit. Zeitschrift für Kristallographie, 129, 178–202.CrossRefGoogle Scholar
Graeser, S., Paar, W.H. and Chen, T.T. (1986) Baumhauerit: ein zweites Vorkommen (Salzburg, Austria). Schweizerische mineralogische und petro-graphische Mitteilungen, 66, 259–266.Google Scholar
Laroussi, A., Moëlo, Y., Ohnenstetter, D. and Ginderow, D. (1989) Argent et thallium dans les sulfosels de la série de la sartorite (Gisement de Lengenbach, vallée de Binn, Suisse). Comptes Rendus de l’Académie des Sciences, Paris, 308, Série II, 927–933.Google Scholar
Makovicky, E. (1985) The building principles and classification of sulphosalts based on the SnS archetype. Fortschritte der Mineralogie, 63, 45—89.Google Scholar
Makovicky, E. (1997a) Modular crystal chemistry of sulphosalts and other complex sulphides. Pp. 237—271.in: Modular Aspects of Minerals (S. Merlino, editor). European Mineralogical Union, Notes in Mineralogy, 1. Eötvös University Press, Budapest.Google Scholar
Makovicky, E. (1997b) Modularity - different types and approaches. Pp. 315–343.in: Modular Aspects of Minerals (S. Merlino, editor). European Mineralogical Union, Notes in Mineralogy, 1. Eötvös University Press, Budapest.Google Scholar
Makovicky, E. and Topa, D. (2012) Twinnite, Pb0. 8TI0 iSbj 3AS0 80S4, the OD character and the question of its polytypism. Zeitschrift für Kristallographie, 227, 468–475.Google Scholar
Makovicky, E. and Topa, D. (2014) The crystal structure of jasrouxite, a Pb-Ag-As-Sb member of the lillianite homologous series. European Journal of Mineralogy, 26, 145–155.CrossRefGoogle Scholar
Makovicky, E. and Topa, D. (2015) Crystal chemical formula for sartorite homologues. Mineralogical Magazine, 79, 25–31.CrossRefGoogle Scholar
Makovicky, E., Topa, D., Tajjedin, H., Rastad, E. and Yaghubpur, A. (2012) The crystal structure of guettardite, PbAsSbS4. The Canadian Mineralogist, 50(2), 253–265.CrossRefGoogle Scholar
Marumo, F. and Nowacki, W (1965) The crystal structure of rathite-I. Zeitschrift für Kristallographie, 122, 433–56.CrossRefGoogle Scholar
Marumo, F. and Nowacki, W (1967) The crystal structure of dufrénoysite, Pb16As16S40. Zeitschrift für Kristallographie, 124, 409–419.CrossRefGoogle Scholar
Moëlo, Y., Makovicky, E., Mozgova, N.N., Jambor, J.L., Cook, N., Pring, A., Paar, W.H., Nickel, E.H., Graeser, S., Karup-Møller, S., Balic-Zunic, T., Mumme, W.G., Vurro, F., Topa, D., Bindi, L., Bente, K. and Shimizu, M. (2008) Sulfosalt systematics: a review. Report of the sulfosalt sub-committee of the IMA Commission on Ore Mineralogy. European Journal of Mineralogy, 20, 7–46.CrossRefGoogle Scholar
Orlandi, P., Biagioni, C., Bonaccorsi, E., Moëlo, Y and Paar, W.H. (2012) Lead-antimony sulfosalts from Tuscany (Italy). XII. Boscardinite, TlPb3(Sb7As2)Σ9S18, a new mineral species from the Monte Arsiccio mine: occurrence and crystal structure. The Canadian Mineralogist, 50, 235–251.CrossRefGoogle Scholar
Pring, A. (2001) The crystal chemistry of the sartorite group minerals from Lengenbach, Binntal, Switzerland - a HRTEM study. Schweizerische mineralogische und petrographische Mitteilungen, 81, 69—87.Google Scholar
Pring, A. and Graeser, S. (1994) Polytypism in baumhauerite. American Mineralogist , 79, 302-307.Google Scholar
Pring, A., Birch, W.D., Sewell, D., Graeser, S., Edenharter, A. and Criddle, A. (1990) Baumhauerite-2a: A silver-bearing mineral with a baumhauerite-like supercell from Lengenbach, Switzerland. American Mineralogist , 75, 915-922.Google Scholar
Sheldrick, G.M. (1997a) SHELXS-97. A computer program for crystal structure determination . University of Göttingen, Germany.Google Scholar
Sheldrick, G.M. (1997b) SHELXL-97. A computer program for crystal structure refinement . University of Göttingen, Germany.Google Scholar
Solly, R.H. (1902) Sulpharsenites of lead from the Binnenthal. Part III. Baumhauerite, a new mineral; and dufrenoysite. Mineralogical Magazine, 13, 151-171.CrossRefGoogle Scholar
Topa, D., Makovicky, E., Tajedin, H., Putz, H. and Zagler, G. (2013) Barikaite, Ag3Pb10(Sb8As11)Σ19S40, a new member of the sartorite homologous series. Mineralogical Magazine , 77, 3039-3046.CrossRefGoogle Scholar
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Anisotropic displacement parameters Table 3 c,d

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