the cu, pb, zn, ag-au deposit of amensif is located on the northern flank of the western high atlas. this deposit is hosted in lower cambrian carbonate bars and is structurally controlled by ne-sw to e-w trending fault structures and is spatially associated with the permian 273 ma azegour granite. ore reserves are around 0.5 mt and grades are 3.21% zn, 0.58% pb, 0.86% cu with 83.31 ppm ag and 0...

Although native bismuth is a relatively common mineral, native antimony is less abundant, and Sb-Bi alloys are relatively rare phases in Nature. Sb-Bi alloys and Ag-Cu-Pb-Sb-Bi sulphosalts have been discovered in the Jialong vein-type Cu-Sn deposit in North Guangxi, South China. The Jialong deposit is hosted by schist within the contact zone of a Neoproterozoic granite. Four stages of ore forma...

groundwaters hydrochemistry of ayrakan and cheshmeh shotori areas and geochemistry of rare earth elements, indicate ayrakan alkali granite as the origin of uranium and other dissolved elements in groundwaters of these areas. geochemical and hydrogeochemical studies as well as the trend of uranium and thorium transition and mobility in aqueous environments of these areas indicate uranium adsorpt...

The Jinba deposit is an orogenic gold located in the Markakuli shear zone, southern part of Altay belt, northwestern China. Several granite and diorite dykes are present area mine, with ore bodies occurring dykes. However, diagenetic age, genesis, evolution these magmas, tectonic setting dyke emplacement process, remain unclear. study based on a detailed geological survey, zircon U–Pb dating, L...

The Lower Jurassic (ca. 177 Ma) Bokan Mountain granitic complex, located on southern Prince of Wales Island, southernmost Alaska hosts a high-grade uranium-thorium deposit with past production. complex is circular body (~3 km in diameter) which intruded Paleozoic granitoids as well metasedimentary and metavolcanic rocks the Alexander Terrane North American Cordillera. This shallow seated intrus...

The Xiawolong gold deposit, located in the Muping–Rushan metallogenic belt (eastern Jiaodong Peninsula), is a newly discovered deposit that developed late Early Cretaceous as fine-grained granite. Gold mineralization, which mainly occurs middle of fresh granite dikes, consists stockwork-style and disseminated ores. They are characterized by middle-high-temperature mineral assemblages, such moly...