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Zincalstibite-9R: the first nine-layer polytype with the layered double hydroxide structure-type

Published online by Cambridge University Press:  05 July 2018

S. J. Mills ,
A. G. Christy ,
A. R. Kampf ,
R. M. Housley ,
G. Favreau ,
J.-C. Boulliard  and
V. Bourgoin
S. J. Mills*
Affiliation:
Geosciences, Museum Victoria, GPO Box 666, Melbourne, Victoria 3001, Australia
A. G. Christy
Affiliation:
Centre for Advanced Microscopy, Sullivans Creek Road, Australian National University, Canberra 0200, Australia
A. R. Kampf
Affiliation:
Mineral Sciences Department, Natural History Museum of Los Angeles County, 900 Exposition Boulevard, Los Angeles, California 90007, USA
R. M. Housley
Affiliation:
Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, California 91125, USA
G. Favreau
Affiliation:
421 Avenue Jean Monnet, 13090 Aix-en-Provence, France
J.-C. Boulliard
Affiliation:
Association Jean Wyart, Collection des Minéraux de Jussieu, IMPMC, Université Pierre et Marie Curie, case courrier 73, 4, place Jussieu, F-75252 Paris Cedex 05, France
V. Bourgoin
Affiliation:
Association Jean Wyart, Collection des Minéraux de Jussieu, IMPMC, Université Pierre et Marie Curie, case courrier 73, 4, place Jussieu, F-75252 Paris Cedex 05, France
*
*E-mail: smills@museum.vic.gov.au
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Abstract

Zincalstibite-9R, a new polytype in the hydrotalcite supergroup is reported from the Monte Avanza mine, Italy. It occurs as pale blue curved disc-like tablets flattened on {001} intergrown to form rosettes typically less than 50 μm in diameter, with cyanophyllite and linarite in cavities in baryte. Zincalstibite-9R is uniaxial (–), with refractive indices ω = 1.647(2) and ε = 1.626(2) measured in white light. The empirical formula (based on 12 OH groups) is (Zn1.092+Cu0.872+Al0.04)Σ2.00Al1.01(Sb0.975+Si0.02)Σ0.99(OH)12, and the ideal formula is (Zn,Cu)2Al(OH)6[Sb(OH)6]. Zincalstibite-9R crystallizes in space group R, with a = 5.340(2), c = 88.01(2) Å, V = 2173.70(15) Å3 and Z = 9. The crystal structure was refined to R1 = 0.0931 for 370 unique reflections [Fo > 4σ(F)] and R1 = 0.0944 for all 381 unique reflections. It has the longest periodic layer stacking sequence for a layered double hydroxide compound reported to date.

Keywords

zincalstibitecualstibitehydrotalcitelayered double hydroxideLDHpolytypecrystal structureMonte Avanza
Type
Research Article
Information
Mineralogical Magazine , Volume 76 , Issue 5 , October 2012 , pp. 1337 - 1345
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 2016

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References

Bonaccorsi, E., Merlino, S. and Orlandi, P. (2007) Zincalstibite, a new mineral, and cualstibite: crystal chemical and structural relationships. American Mineralogist, 92, 198–203.CrossRefGoogle Scholar
Brese, N.E. and O’Keeffe, M. (1991) Bond-valence parameters for solids. Acta Crystallographica, B47, 192–197.CrossRefGoogle Scholar
Ciriotti, M.E., Möckel, S., Blass, G. and Bortolozzi, G. (2006) Cualstibite: ritrovamenti italiani. Micro, 1/2006, 19–24.Google Scholar
Favreau, G., Berbain, C. and Meisser, N. (2003) Cyanophyllite et autres espéces rares de la mine du Tistoulet, Padern (Aude). Le Cahier des Micromonteurs, 4/2003, 17–23.Google Scholar
Mills, S.J., Christy, A.G., Chen, E.C.-C. and Raudsepp, M. (2009) Revised values of the bond valence parameters for [6]Sb(V)-O and [3–11]Sb(III)-O. Zeitschrift für Kristallographie, 224, 423–431.CrossRefGoogle Scholar
Mills, S.J., Kampf, A.R., Housley, R.M., Favreau, G., Pasero, M., Biagioni, C., Merlino, S., Berbain, C. and Orlandi , P . (2012a) Om s i t e , (Ni,Cu)2Fe3+(OH)6[Sb(OH)6], a new member of the cualstibite group from Oms, France. Mineralogical Magazine, 76, 1347–1354.CrossRefGoogle Scholar
Mills, S.J., Christy, A.G., Génin, J.-M.R., Kameda, T. and Colombo, F. (2012b) Nomenclature of the hydrotalcite supergroup: natural layered double hydroxides. Mineralogical Magazine, 76, 1289–1336.CrossRefGoogle Scholar
Patterson, A. L. (1934) A Fourier series method for the determination of the components of interatomic distances in crystals. Physical Review, 46, 372–376.CrossRefGoogle Scholar
Sheldrick, G.M. (2008) A short history of SHELX. Acta Crystallographica, A64, 112–122.CrossRefGoogle Scholar
Walenta, K. (1984) Cualstibit, ein neues Sekundärmineral aus der Grube Clara im mittleren Schwarzwald (BRD). Chemie der Erde, 43, 255–260.Google Scholar
Wendel, W. and Bayerl, R. (2001) Typlokalität Grube Clara - Erstfunde aus vier Jahrzehnten. Lapis, 26(7/8), 56–60.Google Scholar