 | | Journal (article/letter/editorial) | | The Geologyand Geochemistryof the Waterfall Gorge Section of the Insizwa Complex with ParticularReferenceto...Jurassic-aged mafic rocksfrom the Waterfall Gorge sectionof the Insizwa layered complex,Transkei, range...responsiblefor the compositionalvariationin this unit at Insizwa, however, to accountfor the upward increasein the...Basalzone and showsa consistentfractionationinto pyrrhotite-pentlandite-richore at the baseandchalcopyrite-rich...the productionof the basalgabbro. Introduction Gorge,the sequenceof intrusiverocksand contact THE Karoo-agedInsizwa |  | Groves, David I., Marchant, Trudi, Maske, S., Cawthorn, R. Grant (1986) Compositions of ilmenites in Fe-Ni-Cu sulfides and host rocks, Insizwa, southern Africa; proof of coexisting immiscible sulfide and silicate liquids. Economic Geology, 81 (3) 725-731 doi:10.2113/gsecongeo.81.3.725 | Journal (article/letter/editorial) | | IN Fe-Ni-Cu SULFIDES AND HOST ROCKS, INSIZWA, SOUTHERN AFRICA: PROOF OF COEXISTING IMMISCIBLE SULFIDE...which can be usedto indicatea magmaticorigin. the Insizwa complexin southernAfrica. Here, coexThesefeaturesinclude:(1)...platinum-group elements)andthose Geologyof the Insizwa Fe-Ni-Cu Sulfide Deposits predictedon the basisof...sulfide depositsof the Waterfall mentaldata,and (4) chalcophileelementdepletion Gorge sectionof the Insizwaintrusionand...mined camefromthe WaterfallGorgesectionof the Insizwa * Presentaddress:GoldfieldsExplorationPty. Ltd |  | | Report (issue) | | 55.2 2.4 7.7 Total 101.0 100.5 (1) Insizwa deposit, South Africa; by electron microprobe, average of... in a vein cutting massive pyrrhotite ore (Insizwa deposit, South Africa); in Cu–Ni sulfide ore (Sudbury...magnetite, pyrrhotite. Distribution: From the Insizwa Cu–Ni deposit, Waterfall Gorge, East Cape, South Africa...western Siberia, Russia. Name: For the Insizwa deposit, South Africa, where it was discovered. Type Material: |  | | Report (issue) | | 37.83 Total 99.3 99.66 100.00 (1) Insizwa deposit, South Africa; by electron microprobe, corresponding...parkerite, insizwaite, cubanite, pyrrhotite (Insizwa deposit, South Africa); stannopalladinite, hessite,...Distribution: From the Insizwa Cu–Ni deposit, Waterfall Gorge, Eastern Cape, South Africa [TL]. At Monchegorsk |  | | Report (issue) | | corresponds to Ni3.18 Bi2.12 S2.00 . (3) Insizwa, South Africa; by electron microprobe; corresponds to...chalcopyrite, pyrrhotite, pentlandite, siegenite, bravoite. Distribution: In South Africa, from the Insizwa Cu–Ni...Cu–Ni deposit, Waterfall Gorge, Eastern Cape, South Africa [TL], and in the Loolekop carbonatite, Phalaborwa...deposit, northwest Vietnam. At Kambalda, 56 km south of Kalgoorlie, Western Australia. Name: After Professor |  | | Journal (article/letter/editorial) | | at Carolusberg and East Okiep, Namaqualand, South Africa Received: 12 April 1999 / Accepted: 27 November... due to the paucity of refractory ores in the district. Assimilation of Cu-rich country rocks during...The Cu-sulphide ores of the Okiep district of Namaqualand, South Africa (Fig. 1), remain one of the more...more enigmatic mineral deposits in southern Africa. The ores are hosted by the pyroxenitic and, to a lesser...Sciences, University of Pretoria, Pretoria 0002, South Africa e-mail: wdmaier@scientia.up.ac.za et al. 1983; |  | Barnes, Stephen J., Mungall, James E., Le Vaillant, Margaux, Godel, Belinda, Lesher, C. Michael, Holwell, David, Lightfoot, Peter C., Krivolutskaya, Nadya, Wei, Bo (2017) Sulfide-silicate textures in magmatic Ni-Cu-PGE sulfide ore deposits: Disseminated and net-textured ores. American Mineralogist, 102 (3) 473-506 doi:10.2138/am-2017-5754 | Journal (article/letter/editorial) | | predominant minerals under most circumstances are pyrrhotite, pentlandite, and chalcopyrite, forming aggregates...distribution of S abundance in ores from the Ovoid and Eastern Deeps at Voisey’s Bay, after Lightfoot et al. (2012)...deflected close to the contact line to achieve local textural equilibrium. (c) Axial cross section of...instrumental noise from the image (generally a non-local mean filter was applied), and a 3D gradient watershed...north-eastern Brazil (Barnes et al. 2011c), the Merensky Reef of the Bushveld Complex in South Africa |  | | Journal (article/letter/editorial) | | pseudomalachite, aragonite, copper, silver, vanadinite, pyrrhotite, stibnite, clinochlore and quartz, serpentine...papers dealing mainly rvith regional studies in South Africa. The articles are of special interest in the...Rivers in Southern Africa by S. Maske by S. Maske The Diorites of Yzerfontein, Darling, Cape Province On the...Deposit of Abenab West in the Otavi Mountains, South West Africa. . . by W. J. Verwoerd The Application of...Structural Geology by V. Vellet The Dyke Rocks of Cape St. Martin . by J. D. T. Otto The Geology of the |  | | Journal (article/letter/editorial) | | Other sulphide stringers in the area contain pyrrhotite and chalcopyrite. Scattered grains of native...Yukon-Alaska boundary southeast through the White River pyrrhotite showing to the Hudson Bay nickel-copper property...amounts of oxidized sulphide ore from Waterfall Gorge, Insizwa, South Africa. Microchemical tests showed the |  | | Report (issue) | | SURVEY OF SOUTH AFRICA COUNCIL FOR GEOSCIENCE GEOLOGICAL SURVEY OF SOUTH AFRICA MINERALOGY OF SOUTH AFRICA:... COUNCIL FOR GEOSCIENCE GEOLOGICAL SURVEY OF SOUTH AFRICA Scientific Editor R.D. Dixon Linguistic and...Council for Geoscience (Geological Survey of South Africa), 280 Pretoria Street, Silverton, Pretoria or........................... 69 5.1 Overview of South African Occurrences ..............................LAYEREDSUITE,BUSHVELDCOMPLEX.... 111 MINERALOGY OF SOUTH AFRICA: TYPE-MINERAL SPECIES AND TYPE-MINERAL NAMES |  | | Journal (article/letter/editorial) | | Other sulphide stringers in the area contain pyrrhotite and chalcopyrite. Scattered grains of native...Yukon-Alaska boundary southeast through the White River pyrrhotite showing to the Hudson Bay nickel-copper property...amounts of oxidized sulphide ore from Waterfall Gorge, Insizwa, South Africa. Microchemical tests showed the |  | | Journal (article/letter/editorial) | | 1986), O'Toole, Brazil (Marehetto, 1990), Waterfall Gorge, Pondoland (Tischler et al., 1981), Ivrea-Verbano...striking northeast and plunging steeply to the south. Mine workings include the T-1 and T-3 underground...whereas the T-3 mine and the open pit are on the eastern limb (Fig. 2). The locus of the Ni sulphide ore...of about 5 kin, with local concentrations along the southern portion of the eastern limb of the fold, around...dominated by pentlandite and pyrrhotite with minor chalcopyrite and pyrite. Local Lithologies. Lithologies |  | | Journal (article/letter/editorial) | | extremities of one of the ore-bodies in the Sudbury district, Ontario. Obtained in crystalline masses by fusing...Although the original description of parkerite from South Africa (Scholtz, 1936) is too indefinite to permit...a new nickel sulphide from the nickel oresof South Africa. A closercomparison of the properties of the...gold, together with the prevailing chalcopyrite, pyrrhotite, and pentlandite. The association with galena...consisting largely of galena, with parkerite, pyrrhotite, and chalcopyrite. From its behaviour on the |  | | Journal (article/letter/editorial) | | Noril'sk-Talnakharea, the Duluth Complex,the InsizwaComplex,andthe Cape Smithbelt. Someof the marginalsulfidesat Muskoxare...RegionalGeologicSetting The country rocks to the south, east, and west of the Muskox intrusion are paragneissesand...4 0.10 0.10 0.10 1.0 4.0 2.0 Marginalzone--pyrrhotite lake traverse Po 4 51.69 Pierite 64 Po 6...suggested that the rifting event and the openingof Local Geology the oceanwere associatedwith a mantle plume...by 11 km wide in the north by 100 m wide in the south andpossiblybefore mostof the CoppermineRiver flood |  | | Journal (article/letter/editorial) | | magmatic sulfide ores from Sudbury, Canada and the Insizwa complex, Transkei are not consistent with derivation...although the Cu-rich ores of the Noril’sk-Talnakh district, Russia could have evolved through a complex sequence...Transkei (LIGHTFOOT et al., 1984), Noril’sk-Talnakh district, Russia (DUZHIKOV and DISTLER, 1992; CZAMANSKE...assemblages of the Sudbury district, Canada (NALDRETT et al., 1982; LI et al., 1992), Insizwa Complex, EXPERIMENTAL...is Shangani, 3 is Trojan deposit: Sudbury district and Insizwa complex-solid squares are main or average |  | | Journal (article/letter/editorial) | | blebs and rounded globules of chalcopyrite and pyrrhotite with some Fe–Ti oxides and platinum-group minerals...show geopetal indicators. Sulphur isotopes imply a local crustal source of S in these from pyritic sediments...of these sulphide occurrences was controlled by local country rock type. Low Ni/Cu and Pt/Pd ratios, also...abundant pyrite as large cubic crystals. Further south, in the Eskimonaes Segment, the Miki Fjord Macrodyke...xenoliths in the area around the ‘Saddle’ on the eastern side of the dyke (Fig. 3b), as described in the |  | Barnes, Sarah-Jane, Cox, R. A., Zientek, M. L. (2006) Platinum-group element, Gold, Silver and Base Metal distribution in compositionally zoned sulfide droplets from the Medvezky Creek Mine, Noril’sk, Russia. Contributions to Mineralogy and Petrology, 152 (2) 187-200 doi:10.1007/s00410-006-0100-9 | Journal (article/letter/editorial) | | located in the major sulfide minerals (pentlandite, pyrrhotite, chalcopyrite and cubanite), to establish whether...Ru, Rh and Re were found to be concentrated in pyrrhotite and pentlandite. Palladium and Co was found to...minerals. The enrichment of Os, Ir, Ru, Rh and Re in pyrrhotite and pentlandite (exsolution products of mss)...enriched in Cu-rich sulfides and the base is rich in pyrrhotite. By analogy with the large zoned massive sulfide...Os–Ir–Ru–Rh-rich margins composed primarily of pyrrhotite (Czamanske et al. 1992; Distler 1994; Stekhin |  | | Book | | 1. Mafic dyke swarms in the Kaapvaal Craton, South Africa 189 3.4.2. The Mackenzie dyke swarm, Canada...controls of intracontinental alkaline magmatism in Africa 194 3.5.2. The Damaraland alkaline province, Namibia...Namibia 6.3.2. Anorogenic metamorphism in the eastern Pyrenees 6.3.3. Anorogenic metamorphism and intraplate...intraplate magmatism around the Vredefort Dome, South Africa 6.3.4. Metamorphism and fluid generation; metamorphogenic...Bushveld lgneous Complex, South Africa 8.2.3. Molopo Farms Complex, South Africa and Botswana 8.3 Magmatic |  | | Book | | Bushveld chromite–platinum group metals (PGMs), South Africa, Sudbury nickel–copper, Canada, and a few new...occurrences/deposits/mines of six continents: Africa, North America, South America, Asia, Oceania (including Australia)...or Nickeline 1.3.2.3 Pentlandite 1.3.2.4 Pyrrhotite 1.3.3 Minerals of Chromium 1.3.3.1 Chromite...Earth’s element family. The working deposits in South Africa and Russia are by far the largest for the PGM...significant in Canada, United States, Australia, Africa, Brazil, New Caledonia, Philippines, Indonesia |  | | Book (edition) | | nature when observed under XPL; the matrix is pyrrhotite. Left (bottom): Polysynthetic hematite twinning...Colour & Ø Reflectance light brown, similar to pyrrhotite; 40.00 brownish tints; 39.24 light to brownish...visible Internal Twinning Reflect. Troilite yes Pyrrhotite yes Stibnite moderate, light lamellar and...Mine; NBH Mine), Broken Hill, Yancowinna Co., New South Wales, Australia; PPL B Anhedral native copper (dark;...Taimyr Peninsula, Taymyrskiy Autonomous Okrug, Eastern-Siberian Region, Russia (sample: Melcher/Oberthür); |  | | Journal (article/letter/editorial) | | FIG. 1. Production of Ni metal from the Sudbury district, together with the companies responsible for the...attention, that of the former Transvaal State in South Africa. Platinum was first recorded in chromitite layers...following October, to that at Onverwacht farther south. It should be emphasized that these pipes, despite...He had been working on the Vredefort dome in South Africa, and came to Sudbury to look for shatter cones...successful in identifying shatter cones in quartzite south of Kelly Lake. His 1964 paper (Dietz 1964) was the |  | | Journal (article/letter/editorial) | | Desulphidisation (involving conversion of pyrite to pyrrhotite) in the country rocks was driven by thermal energy...contaminated by LIL and LRE elements derived from local greywacke-slate turbidites (Peltonen, submitted)...whole-rock chemistry is proposed. Regional and local geology The Fennoscandian (formerly known as Baltic)...north (Nironen, 1989) and probably also to the south. The areal extent of moderate gravity anomaly maxima...VNiB and in particular around the Vammala Mining District, are best depicted as boudins, lenses or pipes |  | Karykowski, Bartosz T., Maier, Wolfgang D., Groshev, Nikolay Y., Barnes, Sarah-Jane, Pripachkin, Pavel V., McDonald, Iain, Savard, Dany (2018) Critical Controls on the Formation of Contact-Style PGE-Ni-Cu Mineralization: Evidence from the Paleoproterozoic Monchegorsk Complex, Kola Region, Russia. Economic Geology, 113 (4) 911-935 doi:10.5382/econgeo.2018.4576 | Journal (article/letter/editorial) | | to the local addition of water and, potentially, carbon dioxide to the magma, resulting in local small-scale...sulfide liquid accumulation at the base, while the local decrease in magma viscosity facilitated gravitational...intrusions, such as in the Bushveld Complex (South Africa), the Great Dyke (Zimbabwe), and the Stillwater...Monchegorsk Complex. It is located approximately 120 km south of Murmansk on the Kola Peninsula of Russia and...interstitial patches of up to 10 mm, comprising pyrrhotite, pentlandite, and chalcopyrite with minor pyrite |  | | Book (edition) | | Meta/lurgical and Mineralogical Society o/ South Africa Journal of Chemical Phy ics Journal cif the...and Proceedings of the Royal Socief) 1 of Ne,v South Wales JPSJ Journal of rhe Physical Society of...Cand CSPG Pennskiye gubemskiye wdomo.sti (Perm district ga=elle) Pl,ilosopl,ical Maga=ine Periodico de...Artrocitc, Ivigtul cryolitc deposit. Ivittuut municipality. southwest Wi tgreenl Greenland. 73. 1492, ZK...2iOH)~. Lric.,3 km south of thc mouth of Akatorc Crcek, castcm Otago, Dunedin, South Island, New Zealand |  | | Journal (issue) | | a great rarity. However recent discoveric in South Africa mean that g od hand pccimcns arc now readily...adamitecrystal2 mm acrossfrom PuttapaMine, Beltana,South Australia.This image is a combinationof 9 separateslices...per anally may be available through friends or a local ociety. Using the combination technique with a digital...nickeliferous deposits at Waterfall Gorge, Insizwa, Pondoland, Transkei, South Africa. There was insufficient...Canada Sudbury, Canada Ban Phuc, Vietnam Insizwa, South Africa 10.11 10.05 9.80 10.16 9.98 9.89 9.82 9 |
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