نتایج جستجو برای: orogenic gold mineralization

تعداد نتایج: 97355  

Journal: :Mineralium Deposita 2021

Abstract The Juomasuo Au–Co deposit, currently classified as an orogenic gold deposit with atypical metal association, is located in the Paleoproterozoic Kuusamo belt northeastern Finland. volcano-sedimentary sequence that hosts was intensely altered, deformed, and metamorphosed to greenschist facies during 1.93–1.76 Ga Svecofennian orogeny. In this study, we investigate temporal relationship b...

حیدریان, محمدرضا, عسکری, علی‌, ملک‌زاده‌شفارودی, آزاده, ‌کریم‌پور, محمدحسن,

Exposed rocks at Hired gold-tin prospecting area are mainly Mesozoic and Paleocene sedimentary and Eocene volcanic rocks. Oligo-Miocene Granitoids are intruded the Eocene and older rocks. Based on petrology and physical characteristics of rocks, granitoids are two types: 1) S-type and 2) I-type. Mineralization is seen as stockwork, fault mineralized zone, skarn and in replacement. Stockwork min...

Journal: :Bulletin of the mineral research and exploration 2021

In gold (Au) exploration, the analysis of both bulk leach extractable (BLEG) and acid-extractable Au in <180μm stream sediment fraction are two most common approaches. The Eskişehir- Sivrihisar region Western Türkiye hosts several orogenic type mineral deposits. purpose this study is to delineate geochemical anomalies ore-related elements track their dispersion, which may lead discovery unknown...

Journal: :Bulletin De La Societe Geologique De France 2021

The Puy-les-Vignes W deposit, located in the northwestern French Massif Central (FMC), is a rare occurrence of wolframite-mineralized hydrothermal breccia pipe hosted high-grade metamorphic gneisses. We present an integrated study this deposit aiming to characterize ore-forming system link with Variscan late-orogenic evolution FMC. Based on set representative samples from host rocks and mineral...

2015
Amin Beiranvand Pour Mazlan Hashim

The area under investigation is the Bau gold mining district in the State of Sarawak, East Malaysia, on the island of Borneo. It has tropical climate with limited bedrock exposures and the other constraints imposed in the environment. Bau is a gold field with Carlin style gold deposits. Geological analyses coupled with remote sensing data were used to detect structure elements and hydrothermall...

2002
James R. Clark A. E. Williams-Jones

This report presents three new potassium-argon isotopic age determinations of minerals associated with epithermal alteration from the Toodoggone district, north-central British Columbia. The Toodoggone area has received extensive exploration attention over the past 10 years. In addition to a former goldsilver producer (Baker mine), the district contains a major new gold-silver mine in developme...

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