The eruptions of Campi Flegrei (Southern Italy), one the most studied and dangerous active volcanic areas world, are fed by mildly potassic alkaline magmas, from shoshonite to trachyte phonotrachyte. Petrological investigations carried out in past decades on rocks provide crucial information for understanding differentiation processes its magmatic system. However, compositional features a palim...

sangan magnetite skarn mine is located 300 km southeast of mashhad, along the eastern part of khaf-drouneh volcanic-plutonic belt. granitoids from three areas within the sangan mine a, c-north and dardvay were studied. within the study area, three intrusive rocks including biotite-hornblende monzonite porphyry, biotite syenite and syenogranite were recognized. based on field cross cutting, abse...

Noble gas isotopic composition of fluid inclusions was analyzed in amphibole, plagioclase and clinopyroxene phenocrysts from the shoshonitic dacitic volcanic products Ciomadul dome field, youngest system within Carpathian-Pannonian Region. The highest Rc/RA ratios (3.0–3.8 RA) were obtained for high-mg Malnaş shoshonite. High-Al amphiboles Bixad pumices have between 1.16 2.11 RA. These values o...

Shanmen silver deposit is located on the south section of Daheishan horst polymetallic mineralization belts in central Jilin province, Northeast China. The supplies not only greatest portion and a significant amount gold also. exhibits closely spatiotemporal relationship with Mesozoic ore-hosting diorite granite intrusions basic-felsic dikes. Among dikes felsite one occurred at same fault zone ...