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the challenger mine sa gneiss

(pdf) the geology of the mulgathing complex, from eastern the challenger g deposit in south australia is hosted by pelitic migmatites that underwent peak metamorphism at 7.5 ± 1.5 kbars and at least 800°c. nd model ages suggest a protolith age of 3the geology of the mulgathing complex: from eastern dominion mining is acknowledged for access to challenger mine and drill core from golf bore and kelpie south australia, showing the gneiss, the south lake gabbro and other metaigneous challenger g mine calcrete anomaly exploration success nov 22, 2019 · the mining of challenger challenger started as an open pit in 2002 and was mined to a depth of 135m and completed in april 2004. a total of 120,000 ounces of g was mined. due to the massive nature of the challenger gneiss, the mining process was complicated. challenger overview kingsgate .authe challenger g deposit was a g discovery made by dominion mining in may 1995. open pit mining commenced in mid2002 and plant and infrastructure was completed during the september 2002 quarter. the geology of the mulgathing complex: from eastern dominion mining is acknowledged for access to challenger mine and drill core from golf bore and kelpie south australia, showing the gneiss, the south lake gabbro and other metaigneous gneiss eve wiki fandomgneiss is a popular ore type because it hs a bit of many minerals, increasing its utility value. it has a little something of tritanium, mexallon, isogen and zydrine. it requires 400 ore units to refine there are two variants: 1 iridescent gneiss 2 prismatic gneiss 3 mining 4 refining 5 links gneiss is often the first major league ore that up and coming miners graduate to. finding the more

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overview of geology and mineralisation in south australianewton et al. geology and mineralisation in south australia geophysical signatures of south australian mineral deposits 3 fig.2. map showing the locations of selected mines and mineral occurrences in south australia. portergeo database ore deposit descriptionthe challenger g deposit is hosted by the archaean christie gneiss which comprises banded ironformation, cordieritegarnet gneiss, layered calcsilicates, marble (locally dolomite), basic gneiss and quartzite. it is the basal unit of the 3150 to 2950 ma mulgathing complex. new challenger mine owner to produce first g the lead sajun 26, 2017 · challengers carboninpulp processing plant has a capacity of 650,000 tonnes a and will eventually also take ore from wpgs nearby tarcoola g mine. jacobsen said wpg would continue with its exploration work and he was confident of increasing operation at tarcoola. the 4x4 km moonbi g target located on marmotas 100% owned sulphides indicative of challengerstyle g potential intercepted in first five holes drilled at the 4x4 km moonbi g target located on marmotas 100% owned indooroopilly project strong similarities observed in rocks intercepted to those at the nearby producing challenger g mine challenger mine the challenger mine is a g mine in the far north of south australia, 165 km west of the stuart highway and 740 km northwest of adelaide. it was operated by dominion, kingsgate and then wpg resources. the mine is now on care and maintenance. the deposit was named by the geologist who discovered it (david edgecombe), after his dog. 201213 australia 66,216 south australiachallenger mine, mobella station, central north, south located at mobella station, 740 km north of adelaide, on the northwestern margin of the gawler craton, 165 km west of the stuart highway. the lode systems are contained within a feldsparquartzcordieritegarnetbiotite gneiss. challenger g mine mining technology mining news and the mine remained an undeveloped operation for s after dominion discovered it in 1995. in december 2000, dominion purchased the 50% stake held by resolute and began a feasibility study on the development of an opencut mining operation. the study was completed in 2001. shortly after that, the company began construction and related infrastructure works. the plant was commissioned in september 2002 and on 24 october 2002 the first shipment of g bullion was achieved. see full list on miningtechnology the deposit is characterised by archean metasedimentary christie gneiss. ores are hosted within feldsparquartzcordieritegarnetbiotite gneiss. highgrade rough g minerals are found in combination with slightly disseminated arsenopyrite, loellingite and pyrrhotite within and next to veins that bear coarse quartz, feldspar, garnet and bionite. trace amounts of bismuth minerals, tellurides, chalcopyrite, pentlandite and sphalerite are also hosted within the deposit. four main ore positions are outlined in the deposit: the m1, m2, m3 lodes and the m1 shadow zone. more than 98% of g underground is found in m1 and m2 lodes, and the m1 shadow zone. all lodes are open at depth. the orebody in m1 lode continues to a depth of 1,000m below surface. see full list on miningtechnology ores occur as high grade, narrow and partially parallel lodes that exist as connected dilational zones within an irregular f system. wellstructured shoots that plunge 30° towards the 055° local grid also host the ores. the internal veins are geometrically slanted towards the plunge azimuth of the shoots. the veins are characterised by consistent and elongated down plunge and short strike lengths. the reserves of the mine are estimated at 702,570oz of g. approximately 940oz of g is contained in circuit. see full list on miningtechnology to mine the orebody hosted in m1 lode, an optimum stope design was drafted in the last quarter of 2004 after testing two stopes above the 1020 level. drilling and blasting techniques were adopted and that reduced mining dilution to stopes. the m1 lode has been mined 700m below the surface. stoping was completed at 600m of the m1 lode. during the same time, stoping progressed on the 400 and 380 levels of the m1 and m2 shoots. the m2 shoot was also fully developed on the 840, 820 and 760 levels and partially developed between levels 540 to 600. the ores are processed in a typical carboninpulp (cip) g processing facility. the facility can process up to 425,000t of primary ore per . it includes a jaw crusher complete with a cone crusher, a ball mill, a gravity circuit that recollects hardgrained g, cyanidation leaching and absorption circuit and conventional elution and electrowinning for producing g bullion. the site also has a laboratory that uses leachwell equipment t see full list on miningtechnology the mine produced 98,755oz of g during 200809. approximately 430,798t of ore was mined and a total of 434,087t was processed. the ore was graded at 7.54g / t and the recovery rate was 94%. as of june 2010, 647,205oz of g was produced from the mine. see full list on miningtechnology to increase processing capacity to 530,000t per , an expansion of the mines processing unit is currently under way. the expansion, due for completion by december 2011, will boost g production to 120,000oz per from 98,755oz achieved in 200809. the contract for the extension was awarded to hwe mining for a value of 202m. see full list on miningtechnology

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marmotas g focus implementing a new gawler craton craton, south australia around the challenger g mine total area 5,700km2 centred on the challenger g mine mc large coverage of prospective archaean mulgathing complexchristie gneiss numerous g prospects g province remains underexplored new g deposit recently discovered at aurora tank 350,000m e 6,700,000m n major mines ampprojects challenger minethe challenger area consists predominantly of the christie gneiss, which is a compositionally layered granulite facies metasediment. the most prominent and persistent type of outcrop in the region is bif, which, in places, has been complexly fed and oxidised to haematite goethite gneiss. challenger 1 byrnecutthe challenger mine was extremely remote, located 730km northwest of adelaide in the woomera protected area. access was via unsealed road from coober pedy, or by air from adelaide. the mine operated 24 hours per day, 365 days per , with a contractor workforce of approximately 100 people. (pdf) the geology of the mulgathing complex, from eastern the challenger g deposit in south australia is hosted by pelitic migmatites that underwent peak metamorphism at 7.5 ± 1.5 kbars and at least 800°c. nd model ages suggest a protolith age of new challenger mine owner to produce first g the lead sajun 26, 2017 · challengers carboninpulp processing plant has a capacity of 650,000 tonnes a and will eventually also take ore from wpgs nearby tarcoola g mine. jacobsen said wpg would continue with its exploration work and he was confident of increasing operation at tarcoola. challenger operations kingsgate .authe challenger mine produced 66,216 ounces of g for the with an average milled grade of 3.91 grams per tonne (g/t), and a total cash cost of 1,107 per ounce. the grade was low due to a shortfall in ore supply from the mine that was supplemented by low grade ore from stockpiles. higher dilution in stopes at the base of the mine and depletion on those levels due to the additional displacement of the ore horizons following the identification of the 215 shear, contributed to the lower than expected production from the lower levels. a shortfall in underground development also access to ore sources. development and mining commenced at the higher grade challenger west orebody during the but was insufficient to offset the shortfall from the base of the mine. because of the poor ore recovery from the bottom of the mine and the drop in the g price, a strategic review of the mine operation was carried out. this resulted in a new plan that focuses on the higher grade see full list on kingsgate .au significant geological milestones at challenger for the include the identification of the 215 shear, confirmation of m2 lode mineralisation below the 215 shear, and continued development on the high grade challenger west lode. development of the 215 level highlighted a moderate angle ductile brecciated zone dipping to the north west (termed the 215 shear). this structure, rather than the 79 fault, has resulted in the offset in the lode system below the 215 level and this has been confirmed in reexamination of the drill core. mining on various levels above and below the structure revealed it bisected the 79 fault in a very similar position to where the lodes were truncated on a number of levels, and hence its significance wasnt recognised for some time. due to the orientation and moderate dip of the 215 shear, the lodes were offset more than previously expected, and the immediate levels beneath, abutting the feature, had greatly reduced stope size. development to test ch see full list on kingsgate .au the current decline and mining front of the m1/ m2 orebodies has continued below the 215 shear, with the establishment of the 205, 195, 175, 155 and 135 levels. stoping has been initiated on the 205, 195 and 175 levels where ground conditions in the stopes have led to greater than planned dilution. poor ground conditions were noted in the levels just above the 215 shear and are thought to be associated with the shear rather than with the depth of the mine. in an effort to control the dilution, stope dimensions, pillar placement and cable bolting is being trialled. a combination of these ground control methods has resulted in a degree of success in reducing the dilution. the mine schedule continued with a combined focus of development and stoping on two separate work areas being the high grade shoot at challenger west on the 790, 810, 890 and 870 levels, and the mining of high grade ore pods below the 215 shear on m1 and m2. a total of 6,799 metres of development was achieved for the see full list on kingsgate .au in april 2013, kingsgate was saddened to report that an employee was fatally injured off site while returning home from the challenger g mine. its important to reflect for a moment to acknowledge the important contribution this individual made to his place of work but to also recognise the loss this persons family suffers. kingsgate is fully cognisant of the valuable contribution and dedication shown by this individual and will strive to ensure that his legacy is respectfully remembered. during 2013 there were four incidents resulting in lost time injuries, three restricted work injuries, and six medically treated injuries, an overall reduction of 48 percent on the previous s 25 recordable injuries. total injuries reported have also decreased by 15 percent. there were no air medical evacuations during the . the services provided by the oh s team at challenger include onsite emergency and clinical medical services for work related or private injuries, illness and cou see full list on kingsgate .au

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