Abstract

The Kolyma Terrane is one of the long-developed regional structures in Northeast Asia. Specifics of its neotectonic evolution promoted the wide distribution of Cenozoic overburden rocks, weathering crusts included. We studied the spatial distribution, mineralogy, chemistry, grain size composition, and morphology of native gold in this region. Only relicts of lower horizons of the weathering crust are preserved at present. Lithology of bedrocks was unfavorable for the formation of the well-developed weathering crust and its enrichment with Au. Very weak supergene alteration of native gold in placer specimens indicates their direct delivery from the bedrock source. The studied weathering crusts in this region lack economic significance for gold exploration.

中文翻译：

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Glukharinyi矿床矿区（俄罗斯东北部的科利马·特拉恩）中的风化壳及其金矿潜力

摘要

Kolyma Terrane是东北亚历史悠久的区域结构之一。其新构造演化的特征促进了新生代覆盖岩的广泛分布，包括风化壳。我们研究了该地区天然金的空间分布，矿物学，化学性质，粒度组成和形态。目前仅保留风化壳下部地平线的遗物。基岩的岩性不利于发达的风化壳的形成及其富金。砂矿样品中天然金的极弱的超基因改变表明它们是从基岩源直接输送的。在该地区研究的风化壳对金矿勘探没有经济意义。