Mechanisms of Ore Formation of Gold Deposits in Black Shale Strata on The Example of The Krasny Deposit (Bodaybinsky District, Irkutsk Region)

2021 ◽  
Author(s):  
A.E. Budyak ◽  
A.V. Blinov ◽  
V.D. Baikin
Keyword(s):  
Black Shale ◽  
Gold Deposits ◽  
Ore Formation ◽  
Irkutsk Region

scholarly journals Innovative methods of extracting the loose gold from technogenic deposits in the Irkutsk region

2018 ◽  
Vol 212 ◽  
pp. 01016
Author(s):  
Elena Golovina ◽  
Anastasia Dykusova ◽  
Maxim Zhizhelev
Keyword(s):  
Mineral Resource ◽  
Gold Mining ◽  
Mining Industry ◽  
Precious Metals ◽  
Gold Deposits ◽  
Resource Base ◽  
Processing Technologies ◽  
Irkutsk Region ◽  
Equipment Modernization ◽  
Production Capacities

In Russia and abroad, the scope of the use of gold has significantly expanded, which undoubtedly affected the level of production. However, despite the fairly high rates of gold mining, the economic situation that has developed in recent years makes the companies look for new innovative placer processing technologies that will allow preserving and increasing the extraction of the precious metals. The search for and exploration of new placer gold deposits requires very considerable financial resources and time, and therefore the proposed project for the extraction of alluvial gold from technogenic deposits is of great importance for the functioning of the mining industry of the Irkutsk region, since it helps to overcome at least two negative trends: firstly, the deterioration of the mineral resource base, and secondly, large losses of gold with dump products (up to 50%) associated with the use of obsolete washing equipment. Modernization of production capacities and processing technologies is not only one of the main factors for increasing competitiveness in the gold mining industry and attracting investors, but will also help increasing the mineral resource base of the Irkutsk region by reassessing technogenic deposits, setting gold technogenic deposits on the balance, development of technologies for technogenic deposits and processing, and involvement of technogenic deposits in the mass processing.

scholarly journals Modelling Seismically Induced Mesothermal Goldfields along the Deep-Rooted Cadillac-Larder Lake Fault, Abitibi, Canada

Geofluids ◽  
2018 ◽  
Vol 2018 ◽  
pp. 1-21 ◽  
Author(s):  
Pierre Bedeaux ◽  
Silvain Rafini ◽  
Pierre Pilote ◽  
Réal Daigneault
Keyword(s):  
Gold Deposits ◽  
Hydrothermal Systems ◽  
High Potential ◽  
Seismic Events ◽  
Two Dimensional ◽  
Ore Formation ◽  
Predictive Mapping ◽  
Geological Constraints ◽  
Structural Heterogeneities

Gold deposits are not uniformly distributed along major faults due to complex (and long-debated) interactions between seismicity, hydrothermalism, and structural heterogeneities. Here, we use static stress modelling (SSM) to quantitatively investigate these interactions, by exploring the role of Cadillac-Larder Lake Fault (CLLF) Archean seismicity in the genesis of the regional goldfields. Various rheological factors are evaluated for optimizing the models’ ability to reproduce known gold occurrences, regarded as the fossil primary markers of synkinematic hydrothermal systems. We propose that the marked structural heterogeneities of the CLLF induced persistent seismic segmentation and recurrent ruptures of the same fault windows that arrested on robust node points. These ruptures favour repeated occurrences of seismically triggered hydrothermalism along long-existing fluid pathways having an enhanced permeability and iterative ore formation into supracrustal discharge zones by means of episodic drops and build-ups of pressure. Two-dimensional SSM permits the predictive mapping of these high-potential zones. These modelled zones correlate positively with the actual observed gold distribution. We demonstrate that (1) the ruptures along the Joannes Segment arresting on the Davidson Fault and Lapa’s bend can explain the occurrence and location of the Rouyn and Malartic goldfields; (2) the models’ validity is improved by implementing regional geological constraints; and (3) the distant gold occurrences from the CLLF, including the Bourlamaque field, can be explained by doublet seismic events along the Rivière-Héva and Lapause subsidiary faults. Our results provide new perspectives from a fundamental standpoint and for exploration purposes.

Features of Ore Formation of Gold Deposits of the Glukharinskii Ore Cluster (Cis-Kolyma Terrain)

2019 ◽  
Vol 484 (1) ◽  
pp. 7-11
Author(s):  
A. A. Biryukov ◽  
A. V. Volkov ◽  
K. Yu. Murashov ◽  
A. A. Sidorov
Keyword(s):  
Gold Deposits ◽  
Ore Formation

Chemical evolution of pyrite at the Kopylovsky and Kavkaz black shale-hosted gold deposits, Bodaybo district, Russia: Evidence from EPMA and LA-ICP-MS data

2015 ◽  
Vol 57 (1) ◽  
pp. 64-84 ◽  
Author(s):  
E. E. Palenova ◽  
E. V. Belogub ◽  
O. Yu. Plotinskaya ◽  
K. A. Novoselov ◽  
V. V. Maslennikov ◽  
...  
Keyword(s):  
Chemical Evolution ◽  
Black Shale ◽  
Gold Deposits ◽  
Icp Ms

scholarly journals GOLD AND MERCURY IN THE PROCESSES OF ORE FORMATION IN KAMCHATKA

2018 ◽  
pp. 54-60
Author(s):  
V. A. STEPANOV
Keyword(s):  
Chemical Properties ◽  
Mineral Resources ◽  
Gold Deposits ◽  
Ore Deposits ◽  
Ore Formation ◽  
Natural Processes ◽  
The Difference ◽  
Physical And Chemical ◽  
Gold Mercury ◽  
And Chemical Properties

The main features of the difference and similarity of the physical and chemical properties of gold and mercury have been given, which  determine their behavior in the natural processes of formation of  deposits of both metals in Kamchatka. It has been shown that the  difference in the properties of gold and mercury led to the  emergence of independent monometallic deposits, differing in  connection with intrusive formations, in depth and temperature of  ore formation. The similarity of the properties of these elements  determined the appearance of mercury minerals on gold ore deposits and gold in mercury deposits, as well as the formation of complex  gold-mercury deposits. Four geological-industrial types of gold- mercury deposits have been distinguished: the Knoxville, the Carlin,  the Kyuchus and the Chemlian ones, which include deposits with  large gold reserves both abroad and in Russia. The identification of  gold deposits, including through the revision of mercury ore  occurrences and deposits of Kamchatka for gold presence, will strengthen the mineral resources base of gold in this region.

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