 | | Journal (article/letter/editorial) | | Cu-sulphide ores at Carolusberg and East Okiep, Namaqualand, South Africa Received: 12 April 1999 / Accepted:...Abstract Cu-sulphide ores at Carolusberg and East Okiep have Cu/Ni ratios of up to 80, an order of magnitude... 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 |  | | Journal (article/letter/editorial) | | Springer-Verlag 1976 The Copper Deposits of the O'Okiep District, South Africa: New Data and Concepts E...Ltd., Springbok, 8240, South Africa The copper deposits of the O' okiep District rank amongst the top...extension of the 1200 m.y. Kibaran orogenic belt. Copper mineralization is linked to cross-cutting bodies...exsolution lamellae contain up to 14% ZnO. The copper sulphides occur as granular aggregates with silicates...activities were commenced The Copper Deposits of the O' okiep District ~/'~I Fig. I. Sketch map |  | CLIFFORD, T. N., BARTON, E. S., RETIEF, E. A., REX, D. C., FANNING, C. M. (1995) A Crustal Progenitor for the Intrusive Anorthosite--Charnockite Kindred of the Cupriferous Koperberg Suite, O'okiep District, Namaqualand, South Africa; New Isotope Data for the Country Rocks and the Intrusives. Journal of Petrology, 36 (1) 231-258 doi:10.1093/petrology/36.1.231 | Journal (article/letter/editorial) | | WITWATERSRAND, PRIVATE BAG 3, WITS 2050, JOHANNESBURG, SOUTH AFRICA "BERNARD PRICE INSTITUTE FOR GEOPHYSICAL RESEARCH...UNIVERSITY OF THE WITWATERSRAND, JOHANNESBURG, SOUTH AFRICA 'DIVISION OF EARTH, MARINE AND ATMOSPHERIC SCIENCE...SCIENCE AND TECHNOLOGY, CSIR, PRETORIA, SOUTH AFRICA ā¢DEPARTMENT OF EARTH SCIENCES, UNIVERSITY OF LEEDS...suggest mines have been established in the O'okiep District in the a crustal-melt source for the intrusive...metamorphism in the O'okiep District is The two principal copper-producing areas in South recorded by a Rb-Sr |  | | Journal (article/letter/editorial) | | of sulfur to selenium ratios in magmatic nickelācopper and platinum-group element deposits Matthias Queffurus...Pyrrhotite-rich ores 18 25.6 Pyrite-rich ores 8 23.5 Millerite-rich ores 12 11.6 Metasedimentary ores 4 ...ores 1 21.3 13.0 10.6 0.24 174 474 1.10 South End Fault Zones SF-MS 5 32.5 15.1 11.1 0.13... Thompson Pipe II Namew Lake Cape Smith All ores SF-Diss 89 Cape Smith (Delta) Delta 8 SF-MS ...5 Country rocks Sedimentary rock 3 Delta 9 Cape Smith (Raglan) Whole rock ā geomean 2ā3 Donaldson |  | | Journal (article/letter/editorial) | | Sulfide oxidation as a process for the formation of copper-rich magmatic sulfides Cora C. Wohlgemuth-Ueberwasser...the Koperberg suite of the Oāokiep Copper District in South Africa (e.g., Maier 2000; McIver et al. 1983)...solidify at a thermal minimum with bornite and millerite present as crystalline phases (i.e., Cu- and Ni-rich)...was then sealed by pressing on a conical metallic copper lid, and equilibrated in a piston cylinder press...progressive oxidation of (Fe, Ni, Cu)1āxS is a copper sulfide composition. We can use the phases present |  | | Journal (article/letter/editorial) | | sulļ¬de deposits: A cautionary case study from the northern Bushveld Complex Jennifer W. Smith a,b, David...Grasvally NoriteāPyroxeniteāAnorthosite (GNPA) member, northern Bushveld Complex was used as a case study based...integrated emplacement and contamination model for the northern limb of the Bushveld Complex. Although the multitude...149 We use a magmatic sulļ¬de deposit from the northern limb of the Bushveld Complex; the Grasvally N...GNPA member is located in the northern limb of the Bushveld Complex, south of the YsterbergāPlanknek Fault |  | | Journal (article/letter/editorial) | | Present address: Independence Group NL, PO Box 496, South Perth, Western 6 Australia 6951. 7 2 School...with 29 the presence of titaniferous magnetite. Copper, Au, Pt, Pd and S concentrations are low to 30...increase in 32 Fe2O3+TiO2+V2O5 concentrations. Copper grades up to 0.42 wt.% and Pt+Pd+Au grades to 2...are typically >1). Cobalt-rich pentlandite and millerite are trace 36 sulfides in these prospects, but...46 mineralization in the Stella Intrusion, South Africa, whereas Navigator mineralization occurs 47 |  | | Book (edition) | | colours once they occur in their oxidised states: Copper minerals then show green, blue, and sometimes red...tenorite and/or malachite plus azurite; native copper and cuprite are less common in this suite. Right...bright green gold-yellow, silver-white (Ag) to copper-red (Cu); 72.26 very light grey with yellowish...native Polarite yes Nickelskutterudite yes Millerite Arsenopalladinite Stibiopalladinite Reflection...92.20 isotropic yes Copper, native gold-yellow, silver-white (Ag) to copper-red (Cu); 82.00 light |  | | Book | | talc vug in 1997, is 1.7 cm long (Marty, 2004 ). AFRICA widely in Litchfield County, where good crystals...Mount Malosa, Chilwa alkaline province, Zomba district. "Illite" is the name of a series of incompletely...which they called the Bentley Lake Road occurrence, south of Bancroft. Sharp, flattened rhombohedral ilmenite...Girardville, itself 40 km northwest of Lac Saint-Jean in south-central Quebec, very large and sharp ilmenite Cl)...the town of Amsteg, subordinate drainages running south to Val Caverdiras; ilmenite rose-bearing clefts |  | Karykowski, Bartosz T., Maier, Wolfgang D., Groshev, Nikolay Y., Barnes, Sarah-Jane, Pripachkin, Pavel V., McDonald, Iain (2018) Origin of Reef-Style PGE Mineralization in the Paleoproterozoic Monchegorsk Complex, Kola Region, Russia. Economic Geology, 113 (6) 1333-1358 doi:10.5382/econgeo.2018.4594 | Journal (article/letter/editorial) | | famous Merensky reef in the Bushveld Complex of South Africa (e.g., Cawthorn, 2010), it is of particular...Ga, thus producing the Fennoscandian Shield of northern Europe (HƶlttƤ et al., 2008). In the Paleoproterozoic...chalcopyrite, pyrrhotite, pentlandite, and locally millerite (Grokhovskaya et al., 2000). Based on the presence...whereas broadly coeval komatiites and picrites from northern Finland have >30 ppm Zr (Hanski et al., 2001)...crosscutting relationships were also observed in the northern Bushveld Complex, where the voluminous, mafic |  | | Book (edition) | | Compounds, Carbides, Nitrides, Phosphides and Silicides Copper I/A.01-10 4 Silver I/A.01-20 6 Gold I/A.01-40 8...Sulphosalts II/A - Alloys and Alloy-like Compounds, with Copper, Silver, Gold and Nickel Algodonite II/A.01-10...Freboldite Polarite Sobolevskite Cherepanovite Millerite Covellite Klockmannite Idaite Valleriite Tochilinite... Selenium and Tellurium < 1:1, Tellurides with Copper, Silver and Gold Linnaeite II/D.01-20 320 Polydymite...Sb,Bi = x), Sulfosalts with Predominant Iron and Copper x = 2.0 Berthierite II/E.01-10 458 Wittichenite |  | | Journal (issue) | | Russell Society 1997. ISSN 0263 7839 FRONT COVER: Millerite, acicular crystals up to 7 mm long, on crystalljsed...siderite. Ferndale , Rhondda Fach, Mid Glamorgan , south Wales. Peter Wallace specimen and photograph. JOURNAL...vivianite H. Howard 93 NOTES Coronadite from the Northern Pennine Orefield, England B. Young, EX Hyslop...concentrated (e.g. rare earth pegmatites and porphyry copper deposits), the ability to identify daughter phases...quartz-<:assiterite vein in the Mole Granite, New South Wales, Western Australia. Two types of coexisting |  | | Book (edition) | | OF OF SOUTH AFRICA MINES GEOLOGICAL SURVEY MINERAL RESOURCES OF REPUBLIC OF THE SOUTH AFRICA...Second World War, and partly as a result of it, South Africa experienced vast industrial expansion. This...official āhandbook on the mineral resources of South Africa, it has become necessary to revise, or rather...reason of the great diversity and magnitude of South African mineral deposits and local mining operations...Chamber of Mines of South Africa with Mr G. H. Grange as co-ordinator, and the South, African mining industry; |  | | Conference Proceedings (Volume) | | org Cover photograph: View of the Aitik open pit copper mine in the very north of Sweden. Mining operations...million tonnes of ore containing 67 100 tonnes of copper, 51 700 tonnes of silver and 1,9 tonnes of gold...different types of Ni-laterite profiles from the northern Caribbean: a geochemical comparison . . ........charnockitic footwall of the Spruce Road deposit, South Kawishiwi intrusion, Duluth Complex, Minnesota,...Geochemistry of the Sakatti magmatic Cu-Ni-PGE deposit, northern Finland .................................... |  | | Book | | Salvador Porphyry Copper Deposit, Chile .................................. . Porphyry Copper Deposits in Island...Porphyry Copper Deposit, Bougainville, Papua New Guinea ......... . Genetic Models for Porphyry Copper Deposits...1.2.5 1.2.6 1.2.7 1.2.8 1.3 1.3.1 1.3.2 1.3.3 Copper-Bearing Breccia Pipes ............ . 22 23 24...Magnetite Deposits ............... 1.6.2 Manto-Type Copper Deposits .............. 64 66 1.7 67 Discussion.................. . 83 The Fresnillo Ag-Pb-Zn District, Zacatecas, Mexico .......................... |  | | Book | | knowledge and understanding of the Archaean geology of South India. Among his pioneering works are studies of...well-preserved Archaean terrains, such as in the South Indian shield, and to build up and test models...Mineral Development of the Karnataka and Chitradurga Copper Corporation. He was responsible for starting several...ventures to exploit chromite, vii iron, manganese, copper, bauxite and clay deposits. It is a measure of...CONTRIBUTORS C.R. Anhaeusser, Witwatersrand, 1 Africa. Economic Geol.ogy Research Unit, University of |  | | Book | | Pretorius 117 Sediment-Hosted Stratiform Deposits of Copper, Lead, and Zinc. . Lewis B. Gustafson and Neil...Lead Deposits and their Relationship to Red-Bed Copper and CarbonateHosted Lead-Zinc Deposits.A. Bjfirlykke...Bjfirlykke and D. F. Sangster 179 Porphyry Copper Deposits Part I. Geologic Settings, Petrology, and Tectogenesis...making a profit. Initially incorporated in the District of Columbia, the Publishing Company was reincorporated...whatever the origin of its magmas. It contains as much copper as nickel, a sign of progressing geochemical evolution |  | | Book | | Corporation of South Africa, the Chair of Economic Geology at Rhodes University, South Africa, and since...appointments at the Astrobiology Centre, University of New South Wales, Sydney, and the China University of Geosciences...which has included work in Europe, southern Africa, South East Asia, New Zealand, the southwest Pacific...Felsic Phase of the Bushveld Igneous Complex, South Africa . . . . . . . . . . . 4.3.6 The Sn-W Deposits.... . . . . . . . 4.4.4 Sabie-Pilgrimās Rest, South Africa . . . . . . . . . . . . . . . . . 4.4.5 Capricorn |  | | Book | | Billiton in London and the Geological Society of South Africa Trust. My colleagues at Wits were extremely...PGEbearing Merensky Reef, Bushveld Complex, South Africa. This unit and the ores within it can be altered...U-bearing conglomerate from the Witwatersrand Basin, South Africa. Quartz veins cutting this unit attest to the...of ore deposits as defined by the Australian and South African Institutes of Mining and Metallurgy. now...essentially only one element exists in the structure. Copper, silver, gold, and platinum are all characterized |
|
