Porphyry Cu-Mo deposits are among the world’s largest source of Cu, Mo, and Re, also an important other trace elements, such as Au Ag. Despite fact that chalcopyrite, bornite, pyrite most common sulfides in this deposit type, their element content remains poorly constrained. In particular, little is known about minor elements partitioning into Cu-(Fe) a function temperature pH hydrothermal flui...

The origin of hypogene alteration and mineralization features in the Escondida porphyry Cu deposit resulted from intense overprinting related to three main hydrothermal stages. beginning each stage is recorded by deposition bright quartz crystals on vein walls that precipitated high-temperature fluids. In deepest zones deposit, earliest started with exsolution intermediate-density fluids, which...

Seasonal changes in herbage elements (Cu, Mo, S, Fe), pasture growth, and soil moisture were measured and their relationships with liver Cu concentration in weaner heifers (n=10–12) and breeding cows (n=10–12) were determined on 7 commercial farms in the Wairoa region. Liver biopsy samples were collected at 2 to 4 monthly intervals and herbage and soil moisture monthly from spring 1996 to sprin...

I. Black-hooded weanling rats were given a copper-deficient diet or diets providing 3 ppm Cu with or without supplements containing combinations of molybdate, sulphate and sulphide salts to provide 35 ppm molybdenum and z pg atoms sulphurlg. Changes in weight and blood haemoglobin concentration were studied during 48 d of treatment. The subcellular distribution of Cu and Mo in the liver was sub...

The reactivity of the Cu(II) complex N,N’-bis(pyridin-2-ylmethylene)propane-1,3-diamine (py2pn), [Cu(py2pn)(ClO4)2], toward O2.− and H2O2 has been examined. reacts with fast second order kinetics, kMcF=4.05×106 M−1 s−1, employing Cu(II)/Cu(I) couple proved by spectroscopic detection reduced form at low temperature. At −40 °C in DMF, reaction H2O2/Et3N yields an stable end-on Cu(II)-hydroperoxid...

Forty crossbred wether lambs, 44 kg initial body weight, were used to study relative bioavailability of Mo in supplemental Mo sources and their effects on body Cu storage. The basal maize-soya-bean meal-cottonseed hulls diet contained 11.5 mg kgÿ1 Cu, 1.1 mg kgÿ1 Mo and 2.1 g kgÿ1 S (DM basis) and was supplemented with 0, 15, 30, or 45 mg kgÿ1 (as-fed basis) added Mo as reagent grade sodium mol...

In this research, selective flotation of Mo from the Sungun Cu-Mo concentrate was evaluated in different operating conditions. It was found that the addition of 16 kg/t Na2S into flotation pulp and aeration decreased rapidly the initial oxidized- reduction potential (ORP) of the pulp from +228mV to -597 mV (with reference to standard Ag/AgCl electrode) and increasing the amount of Na2S by 50kg/...

In this study, a high energy planetary ball milling technique was used to synthesize nano-crystalline Mo-Cu alloys. Molybdenum trioxide (MoO3) and copper oxide (CuO) were used as the starting materials. Carbo-thermal co-reduction of mixed Mo and Cu oxides powders was done with milling followed by a heat treatment at a high temperature. Differential thermal analysis/thermogravimetric (DTA/TG) wa...

The Hunt Mo skarn deposit is one of the best examples of a late tectonic, granitic pegmatite-related, skarn system in the Grenville province. An Re-Os age of 1069 ± 11 Ma was obtained from a molybdenite crystal (6.4 ppm Re) hosted in proximal skarn (sample 50O) consistent with a contact metasomatic origin related to the granitic body. Although less evolved than other Grenvillian pegmatites, the...