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Beaverite-(Zn), Pb(Fe2Zn)(SO4)2(OH), a new member of the alunite group, from Mikawa Mine, Niigata Prefecture, Japan

Published online by Cambridge University Press:  05 July 2018

E. Sato
Affiliation:
Department of Applied Chemistry, Tokyo University of Science, Kagurazaka, Shinjuku, Tokyo 162-8601, Japan
I. Nakai
Affiliation:
Department of Applied Chemistry, Tokyo University of Science, Kagurazaka, Shinjuku, Tokyo 162-8601, Japan
Y. Terada
Affiliation:
JASRI Spring-8, 1-1-1 Kouto, Sayo, Hyogo 679-5198, Japan
Y. Tsutsumi
Affiliation:
Department of Geology and Paleontology, the National Museum of Nature and Science, 3-23-1, Hyakunin-cho, Shinjuku, Tokyo 169-0073, Japan
K. Yokoyama
Affiliation:
Department of Geology and Paleontology, the National Museum of Nature and Science, 3-23-1, Hyakunin-cho, Shinjuku, Tokyo 169-0073, Japan
R. Miyawaki*
Affiliation:
Department of Geology and Paleontology, the National Museum of Nature and Science, 3-23-1, Hyakunin-cho, Shinjuku, Tokyo 169-0073, Japan
S. Matsubara
Affiliation:
Department of Geology and Paleontology, the National Museum of Nature and Science, 3-23-1, Hyakunin-cho, Shinjuku, Tokyo 169-0073, Japan
*

Abstract

The Zn-bearing beaverite of Sato et al. (2008) has been named ‘beaverite-(Zn)’ in accordance with the alunite supergroup nomenclature of Bayliss et al. (2010), and data for the mineral have been approved by the IMA-CNMNC. Beaverite-(Zn) occurs as a dark-brown secondary mineral in the hydrothermal Cu-Zn-Pb ore deposit of the Mikawa mine, Niigata Prefecture, Japan. Electron microprobe analysis gave an empirical formula of Pb0.95(Fe1.88Al0.10)(Zn0.83Cu0.03)(SO4)2[(OH)5.36O0.38] on the basis of S = 2. The Rietyeld analysis (Sato et al, 2008) indicated it to be trigonal, R3̄m, a = 7.3028(2), c = 17.0517(4) Å, V = 787.56(4) Å3.

Type
CNMNC Newsletter 8
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 2011

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References

Bayliss, P., Kolitsch, U., Nickel, E.H. and Pring, A. (2010) Alunite supergroup: recommended nomen-clature. Mineralogical Magazine, 74, 919-927.CrossRefGoogle Scholar
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