scholarly journals The Process Designing of Gold Extraction from Placers of Passu to Shimshal (Hunza Valley) Gilgit-Baltistan by Mercury Amalgamation and Cyanidation Leached Method

2020 ◽  
Vol 10 (4) ◽  
pp. 25-29
Author(s):  
Muhammad Alam ◽  
Javed Akhter Qureshi ◽  
Garee Khan ◽  
Manzoor Ali ◽  
Naeem Abbas ◽  
...  
Keyword(s):  
Chemical Process ◽  
Gold Deposits ◽  
Shaking Table ◽  
Fluvial Sediments ◽  
Gold Extraction ◽  
Placer Gold ◽  
Study Results ◽  
Reagent Consumption ◽  
Gilgit Baltistan ◽  
River Banks

Gold wash through panning or washing in the fluvial sediments or sands is done on the river banks inSkardu, Hunza and other places. The method of gold washing is very crude, primitive and most of the gold is washedaway back into the river. The current study mainly focused on extraction of placer gold deposits. Pneumatic machinesfrom Passu to Shimshal (Hunza valley) Gilgit-Baltistan. The mercury amalgamation and cyanide leached methods havebeen used for placer gold deposits extraction from the concentrate obtained from shaking table. The amount of goldrecovered from amalgamation method with mercury was 30.9%. The alloyed gold with other metals, gold dust, and finegold was recovered by chemical process. The reagent consumption, i.e. 1.4 kg/ton of NACN and 6 Kg / ton of CaOwere used for extraction of placer gold deposits. The extracted gold is 10.24 g /t and silver 22 g /t and the remaininggold like the amalgamation residue, tailings and middlings are extracted by cyanidation leached method. The extractionof gold by cyanidation process was compared graphically, and study results revealed that extraction of gold usingcyanidation leached method was 91.40% and silver 100%, respectively.

scholarly journals The Process Designing of Gold Extraction from Placers of Passu to Shimshal (Hunza Valley) Gilgit-Baltistan by Mercury Amalgamation and Cyanidation Leached Method

2020 ◽  
Vol 10 (4) ◽  
pp. 25-29
Author(s):  
Muhammad Alam ◽  
Javed Akhter Qureshi ◽  
Garee Khan ◽  
Manzoor Ali ◽  
Naeem Abbas ◽  
...  
Keyword(s):  
Chemical Process ◽  
Gold Deposits ◽  
Shaking Table ◽  
Fluvial Sediments ◽  
Gold Extraction ◽  
Placer Gold ◽  
Study Results ◽  
Reagent Consumption ◽  
Gilgit Baltistan ◽  
River Banks

Gold wash through panning or washing in the fluvial sediments or sands is done on the river banks inSkardu, Hunza and other places. The method of gold washing is very crude, primitive and most of the gold is washedaway back into the river. The current study mainly focused on extraction of placer gold deposits. Pneumatic machinesfrom Passu to Shimshal (Hunza valley) Gilgit-Baltistan. The mercury amalgamation and cyanide leached methods havebeen used for placer gold deposits extraction from the concentrate obtained from shaking table. The amount of goldrecovered from amalgamation method with mercury was 30.9%. The alloyed gold with other metals, gold dust, and finegold was recovered by chemical process. The reagent consumption, i.e. 1.4 kg/ton of NACN and 6 Kg / ton of CaOwere used for extraction of placer gold deposits. The extracted gold is 10.24 g /t and silver 22 g /t and the remaininggold like the amalgamation residue, tailings and middlings are extracted by cyanidation leached method. The extractionof gold by cyanidation process was compared graphically, and study results revealed that extraction of gold usingcyanidation leached method was 91.40% and silver 100%, respectively.

scholarly journals The Efficiency of Amalgamation and Cyanidation for the Extraction of Placer Gold Deposits of Indus River Basin along Gilgit to Thalachi (Gilgit-Baltistan)

2019 ◽  
Vol 10 (2) ◽  
pp. 134-138
Author(s):  
Muhammad Alam ◽  
Javed Akhter Qureshi ◽  
Garee Khan ◽  
Manzoor Ali ◽  
Irfan Ali ◽  
...  
Keyword(s):  
River Basin ◽  
Vital Role ◽  
Gold Deposits ◽  
Shaking Table ◽  
Not Given ◽  
Indus River ◽  
Gold Extraction ◽  
Placer Gold ◽  
Gilgit Baltistan ◽  
Fine Gold

Separation of gold from placers are not given importance in Pakistan, but in the economy of Gilgit-Baltistan,it plays a vital role. The study mainly focused on shaking table technique for the extraction of gold from placer depositsalong Gilgit river between Gilgit and Thalachi, near Gilgit and Astore river junction. For the separation of gold, fromthe concentration of shaking table the Hg; mercury amalgamation has been used for it. In the result of theamalgamation process recovered gold was 27.12%. The cyanidation process was used to separate from remains ofmercury amalgamation, tailing and middling of shaking table. The graphical results of gold extraction with bottle rollcyanidation and agitation method were compared. The results of gold separation using bottle roll cyanidation andagitation methods were about 87.5% and 29.8% respectively. It is clear from the results, the bottle roll cyanidation is abetter technique for the separation of fine gold from placers along with downstream waterway areas, where placerdeposits occur.

scholarly journals The Efficiency of Amalgamation and Cyanidation for the Extraction of Placer Gold Deposits of Indus River Basin along Gilgit to Thalachi (Gilgit-Baltistan)

2019 ◽  
Vol 10 (2) ◽  
pp. 134-138
Author(s):  
Muhammad Alam ◽  
Javed Akhter Qureshi ◽  
Garee Khan ◽  
Manzoor Ali ◽  
Irfan Ali ◽  
...  
Keyword(s):  
River Basin ◽  
Vital Role ◽  
Gold Deposits ◽  
Shaking Table ◽  
Not Given ◽  
Indus River ◽  
Gold Extraction ◽  
Placer Gold ◽  
Gilgit Baltistan ◽  
Fine Gold

Separation of gold from placers are not given importance in Pakistan, but in the economy of Gilgit-Baltistan,it plays a vital role. The study mainly focused on shaking table technique for the extraction of gold from placer depositsalong Gilgit river between Gilgit and Thalachi, near Gilgit and Astore river junction. For the separation of gold, fromthe concentration of shaking table the Hg; mercury amalgamation has been used for it. In the result of theamalgamation process recovered gold was 27.12%. The cyanidation process was used to separate from remains ofmercury amalgamation, tailing and middling of shaking table. The graphical results of gold extraction with bottle rollcyanidation and agitation method were compared. The results of gold separation using bottle roll cyanidation andagitation methods were about 87.5% and 29.8% respectively. It is clear from the results, the bottle roll cyanidation is abetter technique for the separation of fine gold from placers along with downstream waterway areas, where placerdeposits occur.

Prospects of primary gold potential in southern Siberian platform based on study results for placer gold morphological and geochemical features

2021 ◽  
pp. 97-114
Author(s):  
Ivan Chetvertakov ◽  
Alexey Ivanov ◽  
Ekaterina Mikheeva ◽  
Tatyana Chikisheva ◽  
Tamara Yakich
Keyword(s):  
Siberian Platform ◽  
Geological Structure ◽  
Gold Deposits ◽  
Primary Sources ◽  
Placer Gold ◽  
Genetic Types ◽  
Study Results ◽  
Geochemical Property ◽  
Geochemical Studies ◽  
Primary Gold

Data on geological structure and minerals of the southern Siberian platform are presented. Placer and primary gold occurrences widespread in this region are briefly characterized. Based on placer gold morphological and geochemical property studies using electron microscopy, its four types are revealed. Conclusions are made about potential primary sources of various placer gold types. Using retrospective data and based on the authors’ placer gold morphological and geochemical studies, Ust-Ilimskaya, Chernorechinskaya and Buraevskaya gold areas are characterized, their prospects for discovering primary gold deposits of various genetic types are determined.

scholarly journals Information and computational GIS for monitoring the natural and technical systems of placer gold deposits

2021 ◽  
Vol 895 (1) ◽  
pp. 012036
Author(s):  
V I Usikov ◽  
Y A Ozaryan
Keyword(s):  
Remote Sensing ◽  
Information Technologies ◽  
Precious Metals ◽  
Gold Deposits ◽  
Raw Material ◽  
Expert Assessment ◽  
Labor Costs ◽  
Resource Base ◽  
Placer Gold ◽  
Geological Information

Abstract It is known that nowadays one of the main problems of mining is the depletion of reserves. The researchers consider mining waste as a source of replenishment of the resource base. Disputes on the prospects for technogenic raw material processing are becoming especially relevant. The object of research chosen by the authors in this article is the technogenic neoplasms resulting from dredging and hydraulic processing of placer gold. The paper presents the results of assessing the prospects and application of the information technologies, in particular, the analysis of data from remote sensing of the Earth in the design and organization of work to involve technogenic placers in operation. It is shown that these technologies are able to increase the efficiency of work and reduce labor costs at the stage of preliminary study of potential development targets. Technogenic complexes of depleted fields are a significant reserve of the mineral resource base of gold and other precious metals. This paper presents the results of the creation of a method for expert assessment of spatial and volumetric indicators of technogenic complexes of alluvial fields and other landscape objects using remote sensing of the territory and analysis of geological information. The Kerbinsky gold-bearing region of the Khabarovsk Region was chosen as the object of research.

scholarly journals Biological and Geochemical Development of Placer Gold Deposits at Rich Hill, Arizona, USA

Minerals ◽  
2018 ◽  
Vol 8 (2) ◽  
pp. 56 ◽  
Author(s):  
Erik Melchiorre ◽  
Paul Orwin ◽  
Frank Reith ◽  
Maria Rea ◽  
Jeff Yahn ◽  
...  
Keyword(s):  
Gold Deposits ◽  
Placer Gold

scholarly journals Typomorphic Features of Placer Gold from the Billyakh Tectonic Melange Zone of the Anabar Shield and Its Potential Ore Sources (Northeastern Siberian Platform)

Minerals ◽  
2020 ◽  
Vol 10 (3) ◽  
pp. 281
Author(s):  
Boris Gerasimov ◽  
Vasily Beryozkin ◽  
Alexander Kravchenko
Keyword(s):  
Native Gold ◽  
Gold Mineralization ◽  
Coarse Fraction ◽  
Gold Deposits ◽  
Primary Sources ◽  
The Arctic ◽  
Geochemical Data ◽  
Placer Gold ◽  
Anabar Shield ◽  
Tectonic Mélange

Precambrian shields and outcropped Precambrian rock complexes in the Arctic may serve as the most important sources of various types of mineral raw materials, including gold. The gold potential of the Anabar shield in the territory of Siberia has, thus far, been poorly studied. A number of primary and placer gold occurrences have been discovered there, but criteria for the prediction of and search for gold mineralization remain unclear. The main purpose of this paper was to study the typomorphic features of placer gold in the central part of the Billyakh tectonic mélange zone in the Anabar shield and to compare them to mineralization from primary sources. To achieve this, we utilized common methods for mineralogical, petrographic, and mineragraphic analyses. Additionally, geochemical data were used. As a result of this investigation, important prospecting guides were identified, and essential criteria for the prediction of and search for gold deposits were elucidated. The characteristics of the studied placer gold were specific for gold derived from a proximal provenance. These characteristics included the poor roundness of the native gold grains, a cloddy–angular and dendritic form, an uneven surface, and a high content of coarse-fraction native gold (0.5–2 mm), which was as high as 24% of the volume of analyzed native gold. In addition, we conducted a study on the mineralogical features of the gold-sulfide mineralization that was disseminated throughout a small exposure area of paleo-Proterozoic para- and orthogneisses in the Anabar shield basement. A comparison of mineral inclusions in the coarse-fraction native gold and mineral assemblages in the ore deposits showed that one of the possible primary sources for placer gold might be small bodies of metasomatically altered orthogneisses associated with large granitoid plutons.

Sign in / Sign up

Export Citation Format

Share Document