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Vol 212
Pages:
40-49
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RUS
Article

Geology, mineralogy and geochemistry of weathering crust of the Svetloborsky and Nizhnetagilsky massifs, the Middle Urals

Authors:
A. M. Duryagina1
N. I. Vorontsova2
E. S. Nikolaeva3
About authors
  • 1 — post-graduate student National Mineral Resources University (Mining University)
  • 2 — Ph.D. associate professor National Mineral Resources University (Mining University)
  • 3 — post-graduate student National Mineral Resources University (Mining University)
Date submitted:
2014-08-11
Date accepted:
2014-10-25
Date published:
2015-04-10

Abstract

The article encompasses the analysis of the mineral composition and geochemistry of weathering crusts of the Svetloborsky and Nizhnetagilsky massifs of the Ural Platinum Belt. Weathering crusts are represented by a partial profile and composed of disintegrated lizardite-chrysotile and loose leached lizardite serpentinite, which are overlapped by clays of nontronite zone at the Svetloborsky massif. The supergene process reveals accumulation of trace elements and rare earth elements (REE) upwards within the weathering profile. Rocks of the Svetloborsky massif con-tacting with dike complexes show high levels of REE content and their accumulation coefficients. In weathering profile of the Svetloborsky and Nizhnetagilsky massifs, the average content of precious metals is low; palladium and platinum prevail, in contrast to primary substrate rocks, where the main platinum group metals are platinum and iridium.

Область исследования:
(Archived) Geological support for Russia’s mineral resources development
Keywords:
Светлоборский массив Нижнетагильский массив Платиноносный пояс Урала кора выветривания редкоземельные элементы элементы платиновой группы золото серебро
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References

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