scholarly journals DISCOVERY AND STUDY HISTORY POKROVSKY GOLD ORE DEPOSIT IN THE AMUR REGION

2020 ◽  
pp. 63-72
Author(s):  
ANTON VLADIMIROVICH MELNIKOV ◽  
◽  
VITALY ALEKSEEVICH STEPANOV ◽  
DMITRIY VALERYEVICH YUSUPOV ◽  
◽  
...  
Keyword(s):  
Native Gold ◽  
Amur Region ◽  
Near Surface ◽  
Ore Deposit ◽  
Gold Ore ◽  
Gold Silver ◽  
History Of ◽  
Typical Composition ◽  
Gold Ore Deposit

A brief history of the discovery and study of the large Pokrovsky gold ore deposit of the Amur Region, from the ores of which about 63 tons of gold were extracted, is given. The role of scientific and production organizations and individual geologists in the discovery of the deposit is shown. According to the results of almost half a century of research, the deposit is classified as a near-surface gold-silver formation with a typical composition of ores, near-ore metasomatites and native gold for deposits of this type. The closest analogue of Pokrovka is the Kubak deposit of the Omolonsky gold-silver province.

scholarly journals Platinum metals on the Bam gold ore deposit of the Upper Amur region

Georesursy ◽  
2019 ◽  
Vol 21 (1) ◽  
pp. 26-30
Author(s):  
Sergey M. Radomskii ◽  
Valentina I. Radomskaya
Keyword(s):  
Noble Metals ◽  
Practical Importance ◽  
Amur Region ◽  
Platinum Metals ◽  
Ore Deposit ◽  
Gold Ore ◽  
Gold Silver ◽  
Upper Amur Region ◽  
Gold Ore Deposit ◽  
Platinum Mineralization

The problems of complex extraction of noble metals (Ru, Rh, Pd, Ag, Os, Ir, Pt, Au) during the development of gold-silver deposits have recently acquired increasing practical importance and relevance, due to the clear tendency to exhaust the base of available ores, their concentration of useful components and deterioration of mining processing conditions. The aim of the work was an additional study of platinum mineralization in ore objects at the large Bam gold ore deposit of the Upper Amur region and obtaining estimates of noble metal contents by atomic absorption, electrochemistry and chemical analyzes. It is shown that industrial concentrations for mining are gold and silver, and platinum metals are present at concomitant concentrations and do not reach the values required for cost-effective industrial processing. The revealed peculiarities of the Bam deposit are superposition of high-temperature and low-temperature stages of mineralization of precious metals within the ore columns, which leads to averaging of general geochemical regularities and leveling of characteristic local differences. It is noted that platinum mineralization increases with depth and proximity to the source of volcanic heat, just like the relative sample of gold.

scholarly journals Mineralogy of the Drazhnoye gold ore deposit, the Republic of Sakha (Yakutia)

2019 ◽  
pp. 57-63
Author(s):  
V. Yu. Chikatueva ◽  
S. A. Sitkevich
Keyword(s):  
Native Gold ◽  
Hydrothermal Solutions ◽  
Mineral Formation ◽  
Ore Deposit ◽  
Gold Ore ◽  
Ore Mineralization ◽  
The Republic ◽  
Deep Source ◽  
Gold Ore Deposit ◽  
Gold Bearing

New data on the mineral composition of the Drazhnoye gold deposit, located within the Taryn ore field, have been presented. The samples from the central and flank areas of the deposit, which characterize ore and barren zones, have been studied. Based on the detailed studies of the interrelationship and the form of mineral exhalations and their aggregates, the stages of mineral formation have been proposed, including two main stages: sediment-diagenetic and hydrothermal-metasomatic. It has been revealed that the main precipitator of early native gold was pyrrhotite, which later, with an increase in fugacity of sulfur, was almost replaced by later pyrite. At the end of hydrothermalmetasomatic stage, native gold is formed from gold-bearing solutions and is located often in quartz and quartzcarbonate veinlets as independent precipitates, less commonly associated with polymetallic minerals, pyrite and arsenopyrite. Previous researchers of the Drazhnoye deposit established its genetic relationship with hydrothermal solutions. The data obtained confirm this. According to the type of gold ore mineralization and the type of prospective deep source of solution, this field is previously attributed to a hydrothermal pluton-related gold — quartz formation.

scholarly journals U AND TH IN METASOMATITE OF POKROVKA GOLD DEPOSIT (THE AMUR REGION)

2020 ◽  
pp. 80-84
Author(s):  
NATALIA VALENTINOVNA MOISEENKO ◽  
Keyword(s):  
Rare Earth ◽  
Correlation Analysis ◽  
Gold Deposit ◽  
Negative Correlation ◽  
Amur Region ◽  
Radioactive Elements ◽  
Ore Deposit ◽  
Gold Ore ◽  
Gold Ore Deposit ◽  
Gold Bearing

Data on the content of radioactive elements in the metasomatites of the Pokrovskoe gold ore deposit were obtained. It was found that U and Th are scattered in gold-bearing metasomatites. According to the results of the correlation analysis, a positive and negative correlation of U and Th with rare, rare-earth and ore elements in the metasomatites of the deposit was established.

scholarly journals DISCOVERY, DEVELOPMENT AND STUDY OF THE KIROVSKYI GOLD ORE DEPOSIT OF AMUR PROVINCE (AMUR REGION, RUSSIA)

2021 ◽  
pp. 108-116
Author(s):  
VITALY ALEKSEEVICH STEPANOV ◽  
◽  
ANTON VLADIMIROVICH MELNIKOV ◽  
Keyword(s):  
Gold Mineralization ◽  
Isotopic Age ◽  
Ore Deposit ◽  
Gold Ore ◽  
Ore Bodies ◽  
History Of ◽  
Gold Ore Deposit ◽  
Gold Sulfide ◽  
Sr Method ◽  
Gold Bearing

The history of the discovery, development and study of the Kirovskyi gold ore deposit in the Priamur gold-bearing province is considered. The deposit is attributed to the gold-bismuth type of vein deposits of the gold-sulfide-quartz formation. Gold mineralization is genetically related to the formation of the Dzhalinda intrusion of Early Cretaceous granitoids or a series of later dikes of «variegated» composition. The isotopic age of gold mineralization, determined by the Rb-Sr method, is in the fork 131-126 Ma. Further prospects of the deposit are associated with the search for large-volume deposits with stockwork type ore bodies.

scholarly journals HISTORY OF DISCOVERY AND STUDY OF «ZOLOTAYA GORA» DEPOSIT OF PRIAMUR GOLD-BEARING PROVINCE (AMUR REGION, RUSSIA)

2021 ◽  
pp. 87-95
Author(s):  
ANTON VLADIMIROVICH MELNIKOV ◽  
◽  
VITALY ALEKSEEVICH STEPANOV ◽  
Keyword(s):  
Amur Region ◽  
Isotopic Age ◽  
Ore Deposit ◽  
Quartz Veins ◽  
Ore Bodies ◽  
History Of ◽  
Gold Ore Deposit ◽  
Gold Sulfide ◽  
Sr Method ◽  
Gold Bearing

Information about the history of discovery, development and study of the gold ore deposit «Zolotaya Gora» in Priamur gold-bearing province is present. The deposit is represented by six gold-sulfide-quartz veins located in the zone of crumpling and diaphthoresis along the gneisses and crystalline schists of the Archean. Ore bodies intersect with diorite porphirites of the Mesosoic age. The deposit had the richest gold-sulfide-quartz ores in the Amur region with an average gold grade of about 120-140 g/t. The isotopic age of mineralization, determined by Rb-Sr method, is 155±7 million years.

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