Abstract Magnetite is a common mineral in the Paleoproterozoic Stollberg Zn–Pb–Ag plus magnetite ore field (~6.6 Mt of production), which occurs 1.9 Ga metamorphosed felsic and mafic rocks. Mineralisation at consists bodies massive to semi-massive sphalerite–galena pyrrhotite (with subordinate pyrite, chalcopyrite, arsenopyrite magnetite) hosted by metavolcanic rocks skarn. sulfides, skarn, amp...

Abstract The surrounding rock of the Lannigou gold mine roadway is mainly sandstone, most which contains thin interlayers argillaceous and carbonaceous minerals. To explore deformation failure mechanism interbedded sandstones under static load caused by stress, macroscopic modes, physical properties, microscopic fracture surface characteristics were studied from different inclination angles. Tr...

Sediments of the Nezam-Abad area, south-east of Bam have been studied for the first time. Sedimentary facies are composed of thin-bedded clay, silt and fine grained sand interbedded with thin laminated limestone. Chemical analysis of X-Ray florescent indicates that more than 50% of sediments consist of silisium and aluminum oxide that can be used for reconstruction of environment. Ninety eight ...

Hybrid sedimentary rocks (HSR) are a major reservoir type in unconventional oil exploration. The characteristics and controlling factors of the content HSR not clear, restricting understanding storage mechanism sweet spots within HSR. Lucaogou Formation western Jimusar Sag is taken as case study. Starting with classification lithofacies system, differences microscopic pore structure, reservoirs...