نتایج جستجو برای: epithermal gold

تعداد نتایج: 83832  

2014
Amin Beiranvand Pour Mazlan Hashim

This paper provides a review of the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER), Advanced Land Imager (ALI), and Hyperion data and applications of the data as a tool for ore minerals exploration, lithological and structural mapping. Spectral information extraction from ASTER, ALI, and Hyperion data has great ability to assist geologists in all disciplines to map the d...

Journal: :Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine 2004
O E Kononov V N Kononov M V Bokhovko V V Korobeynikov A N Soloviev A S Sysoev I A Gulidov W T Chu D W Nigg

A modeling investigation was performed to choose moderator material and size for creating optimal epithermal neutron beams for BNCT based on a proton accelerator and the (7)Li(p,n)(7)Be reaction as a neutrons source. An optimal configuration is suggested for the beam shaping assembly made from polytetrafluoroethylene and magnesium fluorine to be placed on high current IPPE proton accelerator KG...

Journal: :Environmental sciences proceedings 2021

The intermediate-sulfidation epithermal Strauss deposit is part of the Drake Goldfield north-eastern NSW, Australia. mineralization gold dominant with minor silver and significant zinc, copper lead. has a combined total resource 2.66 Mt @ 1.5 g/T Au 1.9 Ag. Petrographic analysis shown to be hosted by varying layers dacitic ash flow tuffs cross-cutting lamprophyre dyke though previous authors cl...

Journal: :Mineralium Deposita 2021

Abstract Pyrite geochemistry has proven useful for tracking changes in the composition and physico-chemical conditions of hydrothermal fluids ore-forming environments. Here, we investigated microtextural features chemical pyrite, a main Au-bearing phase Akeshi Kasuga deposits (Southern Kyushu, Japan), to better constrain processes these high-sulfidation epithermal Au deposits. Despite widesprea...

2006
Fred A. Kruse Sandra L. Perry Alejandro Caballero

The Los Menucos District, Rio Negro, Argentina, provides an excellent case history of a complex epithermal gold system mapped and explored using a combination of field mapping and multispectral/hyperspectral remote sensing. The district offers a host of argillic and advanced argillic alteration minerals at the surface, many of which are difficult to identify visually. A strategy utilizing regio...

Journal: :Journal of South American Earth Sciences 2022

This work describes the structural and lithological controls that affect distribution, orientation, precipitation mechanism of mineralization in Martinetas district, from context analysis role played by geological units host mineralization. is a low sulfidation epithermal gold silver mining district located northeastern sector Deseado Massif, Argentina. The characterized numerous quartz veins, ...

Journal: :Journal of geology, geography and geoecology 2021


 The article describes Reza gold deposit of Ugur exploration area located in Geda- bek Ore District the Lesser Caucasus NW Azerbaijan. It is established that main mineralization consists hematite-barite-quartz-kaoline veins- veinlets and breccia, pyrite stock-stockverk quartz-sulfide veins. On orebody surface center secondary quartzites with vein-veinlets barite-hematite have occured over...

Journal: :Indonesian mining journal 2021

Halmahera Island retains several gold deposits. One of the deposits is called as low sulphidation epithermal (LSE) quartz veins which currently being mined and situated in Gosowong goldfield. The mostly originated N-S NNE-SSW direction. This study aimed to determine prospect area northern portion goldfield covering West Kao sub district based on surface mapping rock/float- BLEG stream sediment ...

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