Results 21 to 30 of about 86,925 (244)

Witwatersrand composite paleoplacers

open access: yesИзвестия высших учебных заведений: Геология и разведка, 2021
Background. The Witwatersrand gold province located in South Africa is the richest in the world. The Witwatersrand deposits are composite, where osmirids and diamonds are mined along with gold, silver and uranium.
V. A. Stepanov
doaj   +1 more source

Reflectivity and microhardness of sulfide minerals as genetic information source (case study: pyrite and arsenopyrite) [PDF]

open access: yes, 2005
Reflectivity and microhardness of pyrite and arsenopyrite of black shale gold-ore deposits in Chertovo Koryto (Patom upland) were studied. It was found that sulfides of different generations are characterized by different values of above-mentioned ...
Sinkina, Ekaterina Andreevna   +3 more
core   +2 more sources

Discriminating fluid source regions in orogenic gold deposits using B-isotopes [PDF]

open access: yes, 2016
The genesis of orogenic gold deposits is commonly linked to hydrothermal ore fluids derived from metamorphic devolatilization reactions. However, there is considerable debate as to the ultimate source of these fluids and the metals they transport ...
Lambert-Smith, James   +3 more
core   +1 more source

COARSE GOLD AND NUGGETS IN THE AMUR REGION

open access: yesИзвестия высших учебных заведений: Геология и разведка, 2020
This paper investigates the aggregation forms, sizes and composition of native gold present in the ore deposits and placers of the Amur province. The province corresponds to the zone of the Late Mesozoic collision of geoblocks of the South-Eastern ...
V. A. Stepanov
doaj   +1 more source

A preliminary study on the Mesozoic massive gold metallogenic mechanism of the deep-large fault coupling with critical water in the Jiaodong area, China

open access: yesDizhi lixue xuebao, 2021
This study aims to study the reason why a huge accumulation of gold deposits occurred in the Jiaodong area. We summarized and analyzed the geological background and metallogenic characteristics of the Jiaodong gold deposits.
HU Baoqun   +4 more
doaj   +1 more source

Metallogenic characteristics and tectonic setting of the Jiaodong gold deposit, China

open access: yesSolid Earth Sciences, 2021
Jiaodong is the largest gold deposit concentration area in China. In recent years, great breakthroughs have been made in deep prospecting, and it has become the third largest concentration area of gold deposits in the world.
Ming-chun Song   +5 more
doaj   +1 more source

Gold deposition and resource potential of the Linglong gold deposit, Jiaodong Peninsula: Geochemical comparison of ore fluids

open access: yesOre Geology Reviews, 2020
Abstract The Linglong gold deposit is a super large deposit in the Linglong goldfield, northern Jiaodong Peninsula. The orebodies consist of hundreds of auriferous quartz veins that surrounded by relatively narrow K-feldspar alteration halos.
Lin-Nan Guo   +6 more
openaire   +1 more source

Archaean Gold Mineralization in an Extensional Setting: The Structural History of the Kukuluma and Matandani Deposits, Geita Greenstone Belt, Tanzania [PDF]

open access: yes, 2018
Three major gold deposits, Matandani, Kukuluma, and Area 3, host several million ouncez (Moz) of gold, along a ~5 km long, WNW trend in the E part of the Geita Greenstone Belt, NW Tanzania.
Blenkinsop, Thomas   +4 more
core   +4 more sources

Quartz-tourmaline metasomatites in gold deposits in Aktyuz-Boordinsky ore district (Northern Tien Shan, Kyrgyzstan)

open access: yesРуды и металлы, 2023
In the Aktyuz-Boordinsky ore district in the Northern Tien Shan, numerous deposits and ore occurrences of gold, rare and rare earth metals and base metals are discovered.
Pak N. T.   +4 more
doaj   +1 more source

Ore‐Forming Fluid Characteristics of the Dayingezhuang Gold Deposit, Jiaodong Gold Province, China [PDF]

open access: yesResource Geology, 2009
AbstractThe Dayingezhuang gold deposit is located in the central part of the Zhaoping Fault Zone, which is one of the most important gold‐hosting faults in the Jiaodong gold province of China. Dayingezhuang is a typical large‐scale shear zone‐hosted disseminated gold deposit with superimposed silver mineralization.
Liqiang Yang   +7 more
openaire   +1 more source

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