Author: Pekov Igor V. Zubkova Natalia V. Yapaskurt Vasiliy O. Belakovskiy Dmitry I. Vigasina Marina F. Sidorov Evgeny G. Pushcharovsky Dmitry Yu
Publisher: Mineralogical Society
E-ISSN: 1471-8022|79|1|133-143
ISSN: 0026-461X
Source: Mineralogical Magazine, Vol.79, Iss.1, 2015-02, pp. : 133-143
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Abstract
The new mineral popovite, Cu5O2(AsO4)2, was found in the sublimates of the Arsenatnaya fumarole at the Second scoria cone of the Northern Breakthrough of the Great Tolbachik Fissure Eruption, Tolbachik volcano, Kamchatka, Russia. It is associated with ericlaxmanite, kozyrevskite, urusovite, lammerite, lammerite-β, johillerite, bradaczekite, tenorite, hematite, aphthitalite, anhydrite, langbeinite, calciolangbeinite, As-bearing orthoclase, etc. Popovite occurs as prismatic or tabular crystals and as grains up to 0.2 mm in size forming clusters up to 1.5 mm in size and as crusts on basalt scoria or on aphthitalite incrustations. Popovite is transparent with a vitreous to greasy lustre. Its colour is olive green to dark olive-green, but fine-grained varieties are light yellow-green. The mineral is brittle, with Mohs' hardness ∼3½. Cleavage was not observed and the fracture is uneven.
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