Iron ore occurrences are situated on the south-eastern slopes of the Medvednica Mountain. They occur as discontinous, decameters long and 2-3.5 m thick bedded, poorly mineralized (15-35 % Fe) lenses. A narrow, 6 km long, ore zone strikes NE-SW from Tisova Peć to Pustodol-Adolfovac. It is spatially and genetically bounded to the basic volcanogenic-sedimentary series (SEDEX-type), metamorphosed i...

The Itapuranga alkali granite and Uruana quartz syenite are large K-rich EW-elongated intrusions, in the central part of the Neoproterozoic Brasília Belt, central Brazil. They are associated with Pireneus lineaments, which cut the regional NNW-SSE structures of the southern part of the belt. SHRIMP and conventional U-Pb data for the Itapuranga and Uruana intrusions indicate crystallization ages...

The paper presents the results of comprehensive isotope geochemical (Re-Os, Pb and ?34S) study sulfide mineralization Morozkinskoye deposit. ore zones deposit are localized in syenite massif Mount Rudnaya, which is located within Central Aldan region (southern Yakutia). Gold represented by vein-disseminated or vein type manifested acidic low-temperature metasomatites – beresites (Qz-Ser-Ank-Py)...

Centimeter-scale magmatic enclaves are abundant in peralkaline felsic volcanic rocks the Sanshui Basin. Their lithology is mainly syenite and syenitic porphyry, they comprise alkali feldspar amphibole, which similar to mineral assemblage of host trachyte comendite. The SiO2 content ~63 wt%, that but lower than Thermobarometric calculations showed crystallized at temperature pressure conditions ...