Alvanite from Kazakhstan, U.S.S.R.: New Crystallographic and Chemical Data

Pete J. Dunn, Andrew C. Roberts and Franz Pertlik

Department of Mineral Sciences, Smithsonian Institution, Washington, DC 20560
Geological Survey of Canada, 601 Booth Street, Ottawa, Ontario, Canada K1A OE8
Institut für Mineralogie und Kristallographie, Universitat Wien, A-1010 Wien, Austria

Abstract: Alvanite is monoclinic P2₁/n, with a = 17.808(8), b = 5.132(3), c = 8.881(4)Å, and β = 92.11(3)⁰. The density is 2.49 g/cm³ (meas), 2.492 g/cm³ (calc), Microprobe analysis yielded Al₂O₃ 34.2, FeO 0.3, ZnO 7.6, NiO 4.2, V₂O₅ 27.5, H₂O (by difference) 26.2, total = 100.0 wt. %. This leads to the idealized formula (Zn,Ni)Al₄(VO₃)₂(OH)_12·2H₂O with Z = 2.

Keywords: alvanite • crystallography • Kazakhstan • U.S.S.R.

Mineralogical Magazine; December 1990 v. 54; no. 377; p. 609-611; DOI: 10.1180/minmag.1990.054.377.13
© 1990, The Mineralogical Society
Mineralogical Society (www.minersoc.org)