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Title:
Typomorphism and parasteresis of Yushkinite, the Pai-Khoi anticlinorium
Authors:
Koval'Chuk, N. S.; Makeev, A. B.
Affiliation:
AA(Institute of Geology, Komi Scientific Center Ural Division, Russian Academy of Sciences), AB(Institute of Geology, Komi Scientific Center Ural Division, Russian Academy of Sciences)
Publication:
Geology of Ore Deposits, Volume 50, Issue 7, pp.503-517
Publication Date:
12/2008
Origin:
SPRINGER
Abstract Copyright:
(c) 2008: Pleiades Publishing, Ltd.
DOI:
10.1134/S1075701508070015
Bibliographic Code:
2008GeoOD..50..503K

Abstract

Yushkinite found in quartz-calcite hydrothermal veins in the Pai-Khoi Anticlunorium (the middle reaches of the Silova-Yakha River) is associated with fluorite, sphalerite, and sulvanite and occurs as fine-lamellar aggregates. The mineral is pinkish purple, with perfect cleavage parallel to (0001). The Moh hardness is lower than 1. In reflected light, yushkinite is anisotropic, with strong bireflectance. It is uniaxial and optically negative. Yushkinite was discovered and approved by the Commission on New Minerals and Mineral Names, International Mineralogical Association, in 1983. Twenty years later, reexamination of yushkinite and associated minerals gave rise to the discovery of a new carbonate phase and specification of the physical properties and chemical composition of yushkinite.
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