usgs scientific investigations report 20105070c ore composition may be pbzn, cuzn, or pbcuzndominated, and some deposits are zoned vertically and laterally. many deposits have stringer or feeder zones beneath the massive zone that consist of crosscutting veins and veinlets of sulfides in a matrix of pervasively altered host rock and gangue. solved: station 12 porphyry copper deposit (note complete argilli alteration otzkaolacht phyllic alteration otser.py low grade core pyrite shell 90% pynte potassic alteration otz kisbi ore zone 13% coy + unattered porphyry magmatic fluids are (1) hot(2) acidic (usually hci, hf, and h5so): (3) contain small concentrations of heavy metals such as zn. fe, pb, mo, cu, and in really small classification of deposits earth scia. felsic volcanic hosted cupbznagau b. mafic volcanic hosted cu (zn, au) c. mixed volcanic/sedimentary cuzn (au) sedimentary massive sulphide (sedex) these are formed by hydrothermal emanations on or near the sea floor in association with the deposition of sedimentary rocks. a. pbznag b. ba magmatic layered mafic intrusion xinhai cupbzn ore dressing processxinhai cupbzn ore dressing process it is reported that more than 90% of nonferrous metal ores (copper, lead, zinc, etc.) adopt flotation process, especially for those with fine grain and complex symbiosis. boliden areaore production 300 kt/y depth 1,250 meters cutandfill mining 20 km from concentrator complex oreau, ag, cu, zn and pb multiple small deposits high ore value new hoist machinery reserves ampresources: 2.3 amp6.1 mt 100 employees 3 lead zinc energymining.sa.gov.authe angas mine was commissioned in july 2008 producing znpbcuagau ore from massive sphalerite and galena hosted by tapanappa formation quartzgarnetmicagahnitestauroliteandalusite schist. annual production was around 6 million tpa at 7% zn, 2.72% pb, 0.24%cu, 1 g/t ag and 0.48 g/t au.
descriptive model of sedimentary exhalative znpbdescriptive model of sedimentary exhalative znpb by joseph a. briskey approximate synonyms shalehosted znpbsedimenthosted massive sulfide znpb. description stratiform basinal accumulations of sulfide and sulfate minerals interbedded with euxinic marine sediments form sheetor lenslike tabular ore bodies up to a few tens of meters cu, au, and znpb skarn deposits (models 18b,ccox and skarn about 30 km to the north, high grade ore is sulfide mineral rich, and includes mostly pyrrhotite as well as lesser amounts of chalcopyrite, pyrite, arsenopyrite, and native bismuth. deposit trace element geochemistry cu skarns: cu, au, ag in proximal zonespb, zn, and ag in distal zon, as, sb, bi, and mo anomalies in 2.7 orogenic mineral system geoscience australiaalthough au, cu, zn, pb and ag, in that order, are the main products of the orogenic mineral system, critical commodities, in particular sb and w, are presently being recovered from deposits of this mineral system. lode sbau deposits form a small, but important, subset of lode g deposits. heavy metal pollution caused by smallscale metal ore mining heavy metal pollution in a smallscale metal ore mining area was investigated. pollution generally decreased with increasing distance from the mining district. cu, zn, cd, and pb in local farmland soils came primarily from the mining activities. heavy metal pollution of local farmland soils posed high potential ecological risk. solved: station 12 porphyry copper deposit (note complete argilli alteration otzkaolacht phyllic alteration otser.py low grade core pyrite shell 90% pynte potassic alteration otz kisbi ore zone 13% coy + unattered porphyry magmatic fluids are (1) hot(2) acidic (usually hci, hf, and h5so): (3) contain small concentrations of heavy metals such as zn. fe, pb, mo, cu, and in really small 3mesoproterozoic base metal sulphide geoscienceworldfurther east much smaller and subeconomic stratabound deposits occur at putsberg (cuznpbag) and adjoining geelvloer (zncupbagau). magmatic ore deposits include minor magnetitecopper skarn/ironoxidecopperg (iocg) deposits associated with syntectonic granitoids (~1200 ma) in the east and small syntectonic gabbronorite hosted nicu galileo resources plc ferber projectcommodities: cu, pb, zn, ag, au, bi . deposit type: contact skarn and replacement in limestone and intrusive adjacent to a major composite intrusive. possible structuralcontrolled sediment hosted g deposit present, as well as a porphyry target. location: 25 miles south of wendover, nv, ferber hills, elko county, nevada.
copperleadzinc orestherefore the standard cupbzn flotation practice involves an initial flotation of a cupb bulk concentrate followed by two parallel circuit stages of copperlead separation and separate zinc flotation from the bulk flotation tails. heavy metal pollution caused by smallscale metal ore mining the mean contents of cu, zn, as, cd, and pb in the surface soils of local farmlands were up to 7 times higher than the corresponding background values, and results of multivariate statistical analysis clearly indicate that cu, zn, cd, and pb were largely contributed by the mining activities. zehang sun, xiande xie, ping wang, yuanan hu, hefa cheng 96 2018i n.t.s.: m'vein, returned an assay of 22.42 g/t au, 447.3 ag, 1.5% pb, .96% zn. the average assay values are in the range of: 12 g/t au, 3060 g/t ag, and 6% combined pbzn. the geochemical talus fines survey outlined a broad, strong pbznag anomaly and a moderate to strong cuau anomaly. scandinavian caledonide metallogeny in a plate tectonic this setting is considered to have been host to two characteristic types of strataboundstratiform ores: massive to disseminated znpbcu and cuzn sulphides in sedimentary and mixed sedimentaryvolcanic lithologies with original ore reserves up to 56 mt (bleikvassli, mofjellet)and numerous, laterally extensive, magnetitehematite deposits experiment 9 electrochemistry i galvanic cellzn(s) + cu2+(aq) zn2+(aq) + cu(s) (4) the electrons are not shown because they are neither reactants nor products but have simply been transferred from one species to another (from zn to cu2+ in this case). in this redox reaction, the zn(s) is referred to as the reducing agent because it causes the cu2+ to be reduced to cu. scandinavian caledonide metallogeny in a plate tectonic this setting is considered to have been host to two characteristic types of strataboundstratiform ores: massive to disseminated znpbcu and cuzn sulphides in sedimentary and mixed sedimentaryvolcanic lithologies with original ore reserves up to 56 mt (bleikvassli, mofjellet)and numerous, laterally extensive, magnetitehematite deposits