Platinum and platinoids in the Bolotisty gold-placer deposit (Khabarovsky Krai, Russia)
| Autor: | Natalya Lavrik, Valentina Stepanova, Alexandra Lavrik |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
lcsh:GE1-350
010504 meteorology & atmospheric sciences biology Tourmaline Andesites Geochemistry chemistry.chemical_element 010502 geochemistry & geophysics biology.organism_classification 01 natural sciences Placer deposit chemistry.chemical_compound chemistry Osmium Chromite Platinum Quartz lcsh:Environmental sciences Geology 0105 earth and related environmental sciences Magnetite |
| Zdroj: | E3S Web of Conferences, Vol 192, p 03012 (2020) |
| ISSN: | 2267-1242 |
| Popis: | The article shows the results of studies the platinum mineralization (within the framework of studying the complexity of deposits) in the waste of heavy concentrate in the southeastern flank of the Bolotisty gold-placer deposit, which the located in the Khabarovsky Krai (Russia). The deposit is localized in the “erosion window” among the covers of Miocene basalts and Eocene andesites, where Cretaceous sedimentary, tuffaceous-sedimentary rocks of the basement of the volcano structure, broken through by an Eocene intrusive body of intermediate and basic composition, come to the surface. An abbreviated mineralogical analysis for monofraction of precious metals was carried out for a concentrate fraction weighing 1.813 kg with a grain size of -3.0 + 0.1 mm. Gold and platinum were found - 1.38 mg and 1.08 mg. Platinum has an iron impurity up to 3-5 % Fe and Cu, Ir, Rh impurities are variable. There are plate-like inclusions of native osmium with an admixture of ruthenium in 43 % of the studied platinum grains. There are single inclusions of ehrlichmanite. A large amount of high-temperature dipyramidal quartz, along with magnetite, chromite, tourmaline and other minerals is a characteristic feature of the concentrate and platinum grains of this area. |
| Databáze: | OpenAIRE |
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