The material source and the evolution of ore-forming hydrothermal fluids Xiaojiashan gold deposits remain controversial. We carried out a mineralogical characteristics analysis, trace elements sulfur isotope composition fluid inclusion microthermometry in order to explore sources, conditions, process this deposit. Gold mineralization can be divided into three stages: quartz-pyrite stage, quartz...

The Raman spectra for pure CO2 and CH4 gases their ten gas mixtures were collected at pressures temperatures ranging from 2 MPa to 40 room temperature (?24°C) 300°C, respectively. A systematic analysis was carried out establish a methodology the quantitative determination of composition, pressure, density CO2-CH4 mixtures. shift in peak position ?1 band sufficiently large enable accurate pressu...

Introduction: The Zhangjiapingzi gold deposit, located at the western margin of Yangtze Craton and controlled by Jinhe-Chenghai deep fault, is a newly discovered super-large deposit in Danba-Mianning metallogenic belt. ore bodies are hosted Middle Triassic (T 2 ) altered dolomite (Dm), have two types mineralization: rock type quartz vein type. Previous studies on this rare, especially ore-fluid...

Brambang is one of the porphyry copper-gold prospects/deposits situated along eastern Sunda arc. This study aimed to understand geological framework, alteration geochemistry and ore fluid characteristics prospect. Fieldworks various laboratory analyses were performed including petrography, microscopy, rock geochemistry, chlorite chemistry inclusion microthermometry. The prospect composed andesi...

Abstract Tasmania is the most important tin province in Australia, having been endowed with >0.65 Mt Sn. Some granitic intrusions western have distinctive tourmaline- and quartz-rich magmatic-hydrothermal features, whether they are mineralized (e.g., Heemskirk Granite) or barren (Pieman Heads Granite). The Devonian Pieman plutons crop out on coast of characterized by similar mineralogica...

The formation of carbonate build-ups associated with seafloor methane vents – where microbially mediated sulphate-dependent anaerobic oxidation produces alkalinity is well documented in modern marine environments and the geologic record. However, triggering event(s) behind processes leading to hydrocarbon disequilibrium, seeping consequent deposition seep-carbonates remain poorly constrained. T...