Isoferroplatinum mineral assemblage in the northwestern Salair gold placer

Podlipsky, M. Yu.; Nesterenko, G. V.; Krivenko, Aleksandr P.

doi:10.1016/j.rgg.2005.11.001

Cited by 7 publications

(1 citation statement)

References 6 publications

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“…PGE mineralization (Ru-Ir-Os alloys) was identified in serpentinites (Gusev et al, 2004). This is the only grain containing high-purity platinum among the hundreds of mineral grains of platinum group elements (PGE) investigated in the mountain region including Gornaya Shoria, Kuznetsk Alatau and Salair Ridge (Krivenko et al, 1994;Agafonov et al, 1996;Tolstykh et al, 1996 andPodlipsky and Krivenko, 2001;Zhmodik et al, 2004;Podlipsky et al, 2007). The development of modern high-resolution electron microscopy allows to investigate a material of few nanometers in size which was previously impossible.…”

Section: Introductionmentioning

confidence: 99%

Colloform high-purity platinum from the placer deposit of Koura River (Gornaya Shoriya, Russia)

Nesterenko

Жмодик

Airiyants

et al. 2017

Ore Geology Reviews

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A microinclusion of colloform high-purity platinum in a grain of platinum-group minerals (PGM) from the alluvial gold-bearing placer deposit in the south of Western Siberia (Russia) was detected and characterized for the first time. It is different in composition, texture, and conditions of formation from high-purity platinum of other regions described in the literature. The main characteristics of investigated high-purity platinum are colloform-layered texture, admixture of Fe (0.37-0.78 wt.%), and paragenesis of Cu-rich isoferroplatinum, hongshiite, and rhodarsenide. The PGM grain with high-purity platinum is multiphase and heterogeneous in texture. It is a product of intensive metasomatic transformation of Cu-rich isoferroplatinum (Pt3 (Fe0.6Cu0.4)). The transformation was carried out in two stages: 1 -copper stage including three substages (Cu-rich isoferroplatinum, copper platinum and hongshiite); and 2 -arsenic (rhodarsenide). The formation of high-purity platinum was separated in time from the formation of isoferroplatinum and was carried out by precipitation from postmagmatic solutions.

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Section: Introductionmentioning

confidence: 99%

Colloform high-purity platinum from the placer deposit of Koura River (Gornaya Shoriya, Russia)

Nesterenko

Жмодик

Airiyants

et al. 2017

Ore Geology Reviews

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Fine gold particles and gold dust in alluvial autochthonous placers in southern West Siberia

Nesterenko

Kolpakov

2007

Russian Geology and Geophysics

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This paper deals with the behavior of fine gold particles (0.25–0.1 mm) and gold dust (<0.1 mm) during the formation of alluvial placers in denudation areas in southern West Siberia. Native gold particles with a low settling velocity, <5–10 cm/s, such as dust (<0.1 mm) and fine flat particles, are transported with a river stream beyond denudation areas. This easily migrating gold participates in the formation of lithochemical flows, which are an important indicator of gold mineralization. It occurs in the upper beds of alluvial section. Heavier fine gold particles are partly retained at the site of river activity, and the rest are partly redeposited in cooler parts of placers, being graded according to their settling velocity, as evidenced from the direct relationship between the flatness and size of gold particles. Fine gold particles do not form large accumulations in alluvial autochthonous placers. The main typomorphic features of fine gold particles and gold dust are their abundance in ore sources, compositional similarity to larger gold fractions, and high migration ability. In contrast to morphological features of gold, these ones remain stable during the river drift.

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Isoferroplatinum mineral assemblage from the Burgastain Gol placer (Western Mongolia)

Oyunchimeg

Изох

Vishnevskiy

et al. 2009

Russian Geology and Geophysics

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Platinum group element (PGE) mineral assemblage has been discovered in the gold placers along the Burgastain Gol and Iljgen Gol (Western Mongolia). It includes isoferroplatinum (Pt3Fe) grains with inclusions of cooperite (PtS), laurite-erlichmanite (RuS2-OsS2), cuprorhodsite-malanite (CuRh2S4-CuPt2S4), irarsite-hollingworthite (IrAsS-RhAsS), and bowieite (Rh2S3). It has been established that the isoferroplatinum assemblage was generated from a volcanoplutonic picrite complex in the Ureg Nuur area, which is widespread in the central part of the Harhiraa accretionary terrane. According to composition, the PGE mineral–Cr-spinel assemblage was referred to as the Ural-Alaskan type.

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Isoferroplatinum mineral assemblage in the northwestern Salair gold placer

Cited by 7 publications

References 6 publications

Colloform high-purity platinum from the placer deposit of Koura River (Gornaya Shoriya, Russia)

Colloform high-purity platinum from the placer deposit of Koura River (Gornaya Shoriya, Russia)

Fine gold particles and gold dust in alluvial autochthonous placers in southern West Siberia

Isoferroplatinum mineral assemblage from the Burgastain Gol placer (Western Mongolia)

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