Geochemical features of native gold from the Shamanikha-Stolbovaya ore region, Magadan Oblast

DOI: 10.47765/0869-5997-2026-10003

Abstract

The paper presents data on native gold from the Shamanikha-Stolbovaya ore region of the Prikolymskoe uplift in the Northeastern Russia. Gold mineralization developed in the region, taking into account its geochemical characteristics and data on the composition of microinclusions within it, can be
assigned to the type of gold deposits related to reduced granitoids. Its characteristic zonality is expressed in change of gold-hematite-pyrite mineralization to gold-polysulfide and to gold-silver-polysulfide ones. These mineral assemblages are characterized by native gold of predominantly high, medium, and low fineness and by high frequency and elevated contents of copper, lead, bismuth, and iron, respectively. The gold-polysulfide mineralization played the main role in feeding the gold placers. Using combination of the cluster analysis, correlation analysis, and principal component methods allow us to reveal an indicative significance of the manganese-arsenic-tellurium-bismuth-palladium-lead and iron-bismuth-lead-nickelarsenic-manganese geochemical types of native gold with a general gold-rare metal character of the oreforming systems. Native gold of the Shamanikha-Stolbovaya ore region differs in the role of the geochemical types from the native gold derived from gold-quartz objects of the Central Kolyma and from porphyry molybdenum-copper occurrences of the Topolevaya-Khetachan ore region.