introduction the aqkand cu occurrence, 48 km north of zanjan, is located in the tarom subzone of the western alborz-azerbaijan structural zone. apart from small scale geological maps of the area, i.e., 1:250,000 geological maps of bandar-e-anzali (davies, 1977) and 1:100,000 geological maps of hashtjin (faridi and anvari, 2000) and a number of unpublished perlite exploration reports, prior to t...

The Upper Jurassic Mantos Blancos copper deposit (500 Mt at 1.0% Cu), located in the Coastal Range of northern Chile, displays two superimposed hydrothermal events. An older phyllic alteration probably related to felsic magmatic–hydrothermal brecciation at ∼155 Ma, and younger (141–142 Ma) potassic, propylitic, and sodic alterations, coeval with dioritic and granodioritic stocks and sills, and ...

• Supergene copper mineralization (SCM) from Atacama Desert and SW of Burkina Faso. Paragenesis chemical characterization SCM different geodynamic context. The same mineralogy geochemical patterns are observed in both areas. REE study suggests oxidizing conditions to form supergene mineralization. Geological climatic controls involve the genesis these similar. Using optical microscopy, SEM, EPM...

The feasibility of processing low-grade copper-nickel ores by heap bioleaching was investigated. It found that an iron-oxidizing strain acidophilic microorganisms, Acidithiobacillus ferrivorans, is effective in the leaching sulfide from deposits Russia’s Murmansk region. Sulfide mineralization studied mineral feeds described using methods X-ray phase analysis and optical microscopy. In process ...

Indonesia is a country that has several world-class copper-gold deposits, particularly in eastern Sunda arc. The Hu’u complex prospects the surface as lithocap of extensive epithermal style alteration, but some were detected associated with porphyry beneath surface. study focuses on hydrothermal breccia cement factor influencing system district. methods used mineralogical analysis petrography a...

The combination of electrospinning and sol-gel methods is attracting the interest scientific community for developing three-dimensional bioactive glass (BG)-based fibers. This paper reports fabrication cotton-like copper-doped BG fibers by combining techniques. Acellular bioactivity in simulated body fluid, ion release, cell viability scratch tests were performed. Results showed that copper was...

A systematic regional geochemical stream sediment survey for base metals copper, lead, and zinc over an area of 200 sq.km was carried out around Wapsa in Solukhumbu District. samples were collected from active streams analyzed them using atomic absorption spectrometry (AAS) method. All chemical analysis data interpreted with geostatistical inverse distance weighing (IDW) multivariate interpolat...

This paper presents preliminary results of bedrock mapping in the Taseko Lakes area. This work represents part of a Master’s project funded by International Jaguar Equities (JAG), NWC Exploration Inc. and the University of British Columbia. Fieldwork was completed over two summers; two months of reconnaissance mapping in 1998 and two and a half months of more detailed 1:15 000-scale mapping in ...