Abstract. Deformation of polymineralic aggregates can be accommodated by viscous granular flow, a process mediated the interplay among intracrystalline plasticity and dissolution–precipitation, each active in specific minerals under given P–T conditions. Some rock-forming like quartz feldspars have been intensively studied terms deformation processes. Instead, behavior epidote its role during f...

The Conceição mine, which is located in the Itabira district, southern São Francisco craton, is a rare example of gold and palladium mineralization hosted by jacutinga, an altered Lake Superior-type iron-formation. The mine sequence consists of three metamorphosed lithostratigraphic units, which are from the oldest to the youngest: (1) an Archean volcanosedimentary sequence, (2) a Paleoproteroz...

The W–Sn Panasqueira ore deposit is a magmatic-hydrothermal system, which includes high-grade quartz-vein type mineralization and disseminated greisen-type occurring in the upper part of two-mica granite. We investigated genetic chronological relationships between greisenization granite formation ore-bearing quartz veins by monitoring major trace elements variations quartz-white mica assemblage...

Abstract The Freiberg district hosts one of the largest series epithermal polymetallic vein deposits in Europe. availability a systematic collection historical samples provides an excellent opportunity to study anatomy these systems. Detailed petrographic investigations, geochemical analyses, and fluid inclusion studies were conducted on several vertical profiles within decipher mineralogical z...

The Muteh gold deposit (NE of Golpaygan) in the central part of intrusive-metamorphic belt of Sanandaj-Sirjan zone comprises NW-SE trending gold-quartz vein occurred in metamorphic complex. Gold mineralization is associated with quartz veins that formed during regional deformation across the mylonitic zones in metamorphic rocks of predominantly meta-volcanic, gneiss and schist. The sulfidation ...

The Baghuo gold mine (Kuhzar) is located about 100 km S-SE of Damghan. The area is part of Torud- Chahshirin volcano- plutonic belt. The hosts of quartz – tourmaline veins are mainly granite, granodiorite and volcanic rocks such as andesite and dacite.  Mineralization occurs as a copper- gold bearing silica vein. Quartz, pyrite, chalcopyrite, gold, hematite, malachite, azurite, covellite and Fe...