sar-kuh porphyry copper deposit is located 6 km southwest of the sar-cheshmeh copper mine, kerman province, iran. based on field geology, petrography and fluid inclusions studies, four alteration types have been identified in the sar-kuh area. early hydrothermal alteration formed a potassic zone in the central parts of mamzar granite/grano-diorite stock and propylitic alteration in its peripher...

chlorite flakes, as a product of alteration of biotite, the dominant ferromagnesian mineral in the paleozoic granitic rocks of the canadian appalachians, have been analyzed by electron microprobe for major elements and by 57fe m?ssbauer spectroscopy for the coordination and oxidation state of fe. comparison of m?ssbauer fe3+/fe ratios obtained from chlorite and its host biotite indicates that c...

Informal lending and savings institutions exist around the world, and often include regular door-to-door deposit collection of cash. Some banks have adopted similar services in order to expand access to banking services in areas that lack physical branches. Using a randomized control trial, we investigate determinants of participation in a deposit collection service and evaluate the impact of o...

The newly discovered Federation deposit, with a resource estimate of 2.6 Mt @ 7.7% Pb, 13.5% Zn, 0.8 g/t Au, and 9 Ag, lies 10 km south the Hera deposit within Cobar Basin Lachlan Orogen. Located just north Erimeran Granite contact between Lower Amphitheatre Group underlying shallow marine Mouramba Roset Sandstone, host siltstones sandstones have been brecciated, intensely silicified, chloritiz...

The ore mineralogy of a new promising target the Aldan–Stanovoy gold province—the Spokoininsky cluster—is considered. Gold mineralization is represented by volumetric, nonlinear type, unconventional for region; it related to elements fold structures and reverse fault in enclosing metamorphic basement rocks. Vein-disseminated sulfide–(pyrite)–quartz ores build up deposit-like bodies beresites fr...

Abstract This paper is dedicated to the isotope-geochemical study of zircon from riebeckite granites Verkhnee Espe rare earth-rare metal deposit and specification its U–Pb age. Zircon massif peculiar in high content non-formula elements (up 43000 ppm REE, up 22000 Y, others) demonstrates a clearly expressed heterogeneous structure. The central rim zones show “magmatic” rare-earth element (REE) ...

The biosand filter (BSF) is an intermittently operated, household-scale slow sand filter for which little data are available on the effect of sand composition on treatment performance. Therefore, bench-scale columns were prepared according to the then-current (2006-2007) guidance on BSF design and run in parallel to conduct two microbial challenge experiments of eight-week duration. Triplicate ...