نتایج جستجو برای: Gold Deposits

تعداد نتایج: 110924  

Journal: :journal of mining and environment 2016
c. bempah h-j. voigt a. ewusi

the focus of this research work is on the determination of the impact of mining on the groundwater quality in the historical mining region of sw ashanti region in ghana. this work describes the characteristics of the groundwater chemistry and pollution of the aquifer in the gold-ore bearing formation, which is highly weathered and fractured. the fractures control the permeability and depth of t...

Journal: :geopersia 2012
behzad mehrabi ebrahim tale fazel maryam shahabifar

the muteh gold deposit (ne of golpaygan) in the central part of intrusive-metamorphic belt of sanandaj-sirjan zone comprises nw-se trending gold-quartz vein occurred in metamorphic complex. gold mineralization is associated with quartz veins that formed during regional deformation across the mylonitic zones in metamorphic rocks of predominantly meta-volcanic, gneiss and schist. the sulfidation ...

Elkhan A. Mamedov

This article lists a number of geological data on the conditions of formation of some major gold deposits in the conglomerates of the Earth's crust. We analyze the metallogenic, tectonic, stratigraphic and other factors controlling the formation of gold-bearing conglomerates in certain fields, such as the Witwatersrand (S. Africa) and Darwaz (Tajikistan). The following tectonic factors play the...

Journal: :Andean Geology 2021

A review of gold and bearing base metals deposits in Chile, indicate the existence at least six different type ore deposits, most largely formed during Cenozoic with predominance Miocene. Mesozoic are common but less relevant regarding their size content. These hydrothermal genetically associated subduction related Andean arc magmatism. Due to its relationship episodic magmatism migrating eastw...

Journal: :Quarterly Journal of the Geological Society 1893

Journal: :مهندسی معدن 0
رضا قوامی ریابی دانشگاه صنعتی شاهرود میرمهدی سید رحیمی نیارق دانشگاه صنعتی شاهرود رضا خالوکاکایی دانشگاه صنعتی شاهرود محمد رضا هزاره سازمان زمین شناسی و اکتشافات معدنی کشور

the gold mineralization in kurdistan province of iran was classified as shear zone gold type by some of the researchers. in the current study, the geochemical samples collected from the secondary environment, stream sediments, at the sw of saqquez area were used to investigate the geochemical characteristics of the gold mineralized zones in this environment. the multi-variant statistical analys...

2010
Abduwasit Ghulam

This paper proposes a method to find gold deposits in the Eastern Desert of Egypt. Different methods including various classification methods, principle component transform (PCT), band ratios, and a constrained energy minimization technique are evaluated for their performance for hydrothermal alteration zone mapping. First, these techniques are carried out to highlight known gold deposits over ...

Journal: :Annals of the rheumatic diseases 1977
H Nakamura M Igarashi

The localization of gold in the synovial membrane of rheumatoid arthritis patients treated with sodium aurothiomalate was examined and quantitative analysis of epon-embedded sections was carried out with a wavelength dispersive x-ray microanalyser. Gold was only detected in the lysosomes of synovial lining type A cells and subsynovial mononuclear cells in the form of filamentous deposits and hi...

Delineation of oxide and sulfide zones in mineral deposits, especially in gold deposits, is one of the most essential steps in an exploration project that has been traditionally carried out using the drilling results. Since in most mineral exploration projects there is a limited drilling dataset, application of geophysical data can reduce the error in delineation of the sulfide and oxide zones....

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