 | | Journal (article/letter/editorial) | | illustrating the nature of Archean volcanismin southern Africa and elsewhereare made available for purposesof...mineralization. The Archean mineralization of southern Africa is briefly compared and contrasted with that of...the easternpart southern Africa. of Botswana, the northeasternsegment of South The purposes of this paperare...paperare, briefly,to consider Africa, and Rhodesia,the shield consistsof two crathe nature and distribution...GREENSTONE BELT LITHOLOGICAL UNITS RHODESIA/BOTSWANA SOUTH AFRICA/SWAZILAND Sedimentary unit ShamraJah Mafic-to-l'el$ic |  | | Report (issue) | | = 5.777 Z=1 X-ray Powder Pattern: Onverwacht mine, South Africa. 3.32 (100), 2.87 (100), 1.74 (100)...11.47 Total 98.3 98.7 100.42 (1) Driekop mine, South Africa; by electron microprobe, corresponding to...Occurrence: In chromite in hortonolite dunite (South Africa); as inclusions in chrompicotites (Bulgaria);...ruthenarsenite, rutheniridosmine, chalcopyrite, chalcocite, pyrrhotite, cobaltite, gersdorffite, pentlandite...Distribution: In South Africa, in the Merensky Reef, Bushveld complex, Transvaal, from the Onverwacht [TL] and |  | | Book | | that the former part of the Territory lying to the south of the Molopo River, known as Bechuanaland or British...part of the Cape Province of the Republic of South Africa, is not included. The compiler would gratefully...Afr. Proceedings of the Geological Society of South Africa. Johannesburg. Proc.Rhod.sci.Ass. Proceedings... Leeds. S.Afr.J.Sci. South African Journal of Science. Johannesburg. South African Mining and Engineering...Engineering Journal. Johannesburg. South African Mining and Engineering Yearbook. Johannesburg. S.Afr.Min |  | | Book (edition) | | Southern Africa a Collector’s Guide ■ Rocks, Minerals and Gemstones of Southern Africa & — - ... T ~ '' .rats en&nes L of Southern Africa A Collector’s Guide - Struik Publishers (an operating...typical accessory mineral from the world famous Tsumeb mine Overleaf: Crystalline incrustations of vanadinite...suggestions and advice. Author’s Preface Southern Africa has much to offer the amateur geologist, whatever...best plan is to take local advice wherever you are. 9 In small places try the local police station first |  | | Journal (article/letter/editorial) | | SteynsdorpGoldfield, Barberton Mountain Land, South Africa R. P. VILJOEN',R. S^AGER,A•rD M. J. V•tJOEN...The Barberton Mountain Land of the Republic of South Africa representsa typical early Precambriangreenstonebelt...T•- Barberton Mountain Land of the Republic of South Africa, constitutesa typical early Precambrian greenstonebelt...of meta-volcanicsoverlain by sediments,the whole South African Upper Mantle Publication No. 12. succession...Middle M. J. Viljoen and R. P. Viljoen as part of South Marker. Above this marker, which constitutesthe |  | | Journal (article/letter/editorial) | | southwest of the Rhodesian cration and north of the Limpopo mobile belt. Stratigraphic, structural and lead...equivalent to the Shashi metasediments in the Limpopo belt. There is strong evidence that the Matsitama...a shallow-water facies that occurs only in the Limpopo area. There is no structural evidence that the...There is a major ductile shear zone of F 4 age, south of which F 4 folds are tight, while to the north...belt to the east and in the northern part of the Limpopo mobile belt. Lead isotope evidence suggests that |  | | Journal (article/letter/editorial) | | tectonics, magmatism, and mineralisation of the South African Precambrian shield is discussed. A geosynclinal...five times as long as the post-Precambrian. The South African shield appears highly suitable for investigations...preserved and well exposed. The Precambrian in southern Africa comprises a more or less continuous suite ofmetasediments...of more than 35,000 m. Furthermore, in southern Africa the earth's history, at least in outline, appears...mineralisation. There is hardly anywhere else in Africa an orogenic zone to which this applies. Recent |  | | Report (issue) | | (Sb2.46 As0.54 )Σ=3.00 . (2) Tweefontein Farm, South Africa; by electron microprobe, corresponding to (Pd7...)Σ=8.02 (Sb2.67 As0.30 Sn0.03 )Σ=3.00 . (3) Oktyabr mine, Russia; by electron microprobe, corresponding to...above massive cubanite–mooihoekite ore (Oktyabr mine, Russia). Association: Gold, sperrylite, laurite...Pt–Ir–Os alloys, Pt–Fe alloy, stibiopalladinite, chalcocite, bornite, heazlewoodite, galena, chalcopyrite...and at the Onverwacht mine, in the Merensky Reef, Bushveld complex, Transvaal, South Africa. From the |  | de Ronde, C. E. J., Spooner, E. T. C., de Wit, Maarten J., Bray, C. J. (1992) Shear zone-related, Au quartz vein deposits in the Barberton greenstone belt, South Africa; field and petrographic characteristics, fluid properties, and light stable isotope geochemistry. Economic Geology, 87 (2) 366-402 doi:10.2113/gsecongeo.87.2.366 | Journal (article/letter/editorial) | | minimumscaleof •60 x 10 km andfor phaseseparation on a local(mine)scale.Evidencefor phaseseparation is notedby...>95 percentof the goldproducedhasbeen 1980).The Onverwacht Groupisthoughtto rangein minedfromanareadefinedby...locatedslightlyto the south, therefore,hasa geologichistorythat spansca. 300 and the Three Sisters mine to the northeast...curwithinlater shearzonesandall arehostedby ma(Onverwacht-type) rocks. formationbut prior to the eraplacementof...majorfluidtyperesponsiblethis studyincludethosedescribedfor Onverwacht for the pervasivemetasomatism on the basisof |  | | Book | | t a t e d Bibliographies of Mineral Deposits in Africa, Asia (exclusive of t h e U S S R ) a n d Australasia...him. I have tried to include all ore districts in Africa, Asia (exclusive of the U.S.S.R.)> and Australasia...incluir todos los distritos mineros conocido en Africa, Asia (con exclusion de la Union Soviética), y...Greenland. This volume covers mineral deposits in Africa, Asia exclusive of the U.S.S.R., and Australasia...Philippines, and Japan are included with Asia. In South Africa, the deposits are arranged by prov inces, in |  | | Book (edition) | | Left: Reflection colours of bornite (brown), chalcocite (blue), and pyrite (creme). 2 Reflectance... Hydrothermal Replacements (continued) Right: Chalcocite (bluish grey) irregularly replaces chalcopyrite...stellate forms redbrown strong, red Mineral Chalcocite Selenium, native yes Proustite Tiemannite... Mineral Descriptions Molybdenite in Graphite; Bogala Mine, Sri Lanka 51 Copper, native Synonym(s): Cuivre...deposits, • meteorites not known Azurite, Bornite, Chalcocite, Cuprite, Domeykite, Fe-oxides, Jasper, Malachite |  | Amstutz, G. C., Goresy, A. El, Frenzel, G., Kluth, C., Moh, G., Wauschkuhn, A., Zimmermann, R.A. - Eds. (1982) Ore Genesis. Springer Berlin, Heidelberg. doi:10.1007/978-3-642-68344-2 | Book | | block I experienced recently when visiting a gold mine in virtually unmetamorphosed ground. A fault cuts..."common sense" observations described from the gold mine with the chert and the organic matter. Another potent...Alterations of Conglomeratic Uranium Ores, Pronto Mine, Ontario, Canada E.Wm. Heinrich (With 1 Figure)...Pre-Witwatersrand and Witwatersrand Conglomerates in South-Africa: A Mineralogical Comparison and Bearings on...Observations on Ore Rhythmites of the Trzebionka Mine, Upper Silesian-Cracow Region, Poland L. Fontbote |  | Amstutz, G. C., Goresy, A. EI, Frenzel, G., Kluth, C., Moh, G., Wauschkuhn, A., Zimmermann, R.A. - Eds. (1982) Ore Genesis - The State of the Art - A Volume in Honour of Professor Paul Ramdohr on the Occasion of His 90th Birthday With Special Reference to His Main Scientific Interests - Special Publication of the Society for Geology Applied to Mineral Deposits No. 2. Springer Berlin Heidelberg. | Book | | block I experienced recently when visiting a gold mine in virtually unmetamorphosed ground. A fault cuts..."common sense" observations described from the gold mine with the chert and the organic matter. Another potent...Alterations of Conglomeratic Uranium Ores, Pronto Mine, Ontario, Canada E.Wm. Heinrich (With 1 Figure)...Pre-Witwatersrand and Witwatersrand Conglomerates in South-Africa: A Mineralogical Comparison and Bearings on...Observations on Ore Rhythmites of the Trzebionka Mine, Upper Silesian-Cracow Region, Poland L. Fontbote |  | Montinaro, Alice, Strauss, Harald, Mason, Paul R.D., Roerdink, Desiree, Münker, Carsten, Schwarz-Schampera, Ulrich, Arndt, Nicholas T., Farquhar, James, Beukes, Nicolas J., Gutzmer, Jens, Peters, Marc (2015) Paleoarchean sulfur cycling: Multiple sulfur isotope constraints from the Barberton Greenstone Belt, South Africa. Precambrian Research, 267. 311-322 doi:10.1016/j.precamres.2015.06.008 | Journal (article/letter/editorial) | | constraints from the Barberton Greenstone Belt, South Africa Alice Montinaro a,∗ , Harald Strauss a , Paul... University of Johannesburg, Auckland Park, South Africa i Institute für Mineralogie, Technische Universität...the Barberton Greenstone Belt (3550–3215 Ma), South Africa, provide constraints for sulfur cycling on the...2 to 3.5 Ga old Barberton Greenstone Belt of South Africa and samples should collectively provide an understanding...successions in Canada (Papineau et al., 2007), South Africa (Guo et al., 2009) and on the Fennoscandian |  | | Journal (article/letter/editorial) | | sulfide deposits in the Murchison greenstone belt, South Africa Ulrich Schwarz-Schampera & Hennie Terblanche...Archean Murchison greenstone belt, Limpopo Province, South Africa, represents a rifted epicontinental...volcanic-hosted massive sulfide (VMS) district in Southern Africa. The so-called Cu– Zn line is host to...schwarz-schampera@bgr.de H. Terblanche METOREX Ltd., Rosebank, South Africa higher temperature upflow, reflected by proportions...Murchison greenstone belt . Kaapvaal craton . South Africa Introduction Volcanic-hosted massive sulfide |  | | Report (edition) | | bookseller 1936 Price 3s. Net IMPERIAL INSTITU1··E SOUTH KENSINGTON, S.W. 7 Ts E~ Imperial Institute was...Protecto1·ate .. Southe1n Rhodesia • • • • Union of South Africa • • • • Canada .. •• • • • • Newfoundland •...Empire, especially in Canada and the Union of South Africa. During 1913, Russia was responsible for over...the list of producers of the platinum metals. South Africa has large reserves of platinum ore, and is the...as in the alluvial gold workings of the Choco district, it was usually thrown away as worthless, although |  | | Journal (article/letter/editorial) | | balls and otjotsumeite crystals, Tsumeb, South West Africa (7 cm). Figure 8: Lustrous lead-grey acanthite...Golden brown barite crystals, Villamassargia, near mine, Guanajuato, Mexico (8.5 cm). Iglesias, Sardinia...Enna, Sicily (6 cm). West 800 Level, White Capps mine, Man- 11: Dark grey stibnite crystals, (variety...15: Lustrous pearly grey leiteite, Tsumeb, South West Africa (6 cm). This is part of the type specimen...fluorite crystals on grey galena crystals, Elmwood mine, Carthage, Tennessee (5 cm). Figure 17: Transparent |  | | Journal (article/letter/editorial) | | (Cu) associated with magnetite (Mag) and minor chalcocite (Cct). 4 E: a globular grain of pentlandite (Pn)...%, corresponding to (Ni2.94Fe0.07)S3.01S2.00. Chalcocite is nearstoichiometric (Cu1.99Fe1.01); it occurs...West and “(Pd,Ni)0.44(Te,Sb)0.56” from the Thompson mine, Canada (dillonleitch et al. 1986, chen et al....steWart, J. M. (1977): Platinumgroup minerals from Onverwacht. II. Platarsite, a new sulfarsenide of platinum...minerals and gold in arsenic-rich ore at the Thompson mine, Thompson Nickel Belt, Manitoba, Canada. – Mineral |  | | Report (issue) | | ___________________________________ _ Sudbury district _______________________ ~ Discovery and present...lacers-------------------------------Tulameen district __________________ _ Other placers ______________________...provinces ___________________________ _ Republic of South Africa ___ ------------- __ -----Transvaal and Orange...ores ____________ _ Placers of the Witwatersrand district __ History and production _____________ _ General...---------------N oril'sk district ____________ -----_---- _____ _ Petsamo district ___________________________ |  | McCallum, M. E., Loucks, R. R., Carlson, R. R., Cooley, E. F., Doerge, T. A. (1976) Platinum metals associated with hydrothermal copper ores of the New Rambler Mine, Medicine Bow Mountains, Wyoming. Economic Geology, 71 (7) 1429-1450 doi:10.2113/gsecongeo.71.7.1429 | Journal (article/letter/editorial) | | intrusive rocks elsewherein the region. mining district ,of the Medicine Bow Mountains in southeastern...Wyoming, showing the location of the New Rambler mine with respectto the Mullen CreekNash Fork shear zone...activeintermittently through Laramide time. Shear zone rocks the mine is a mylonitic biotite-epidote-plagioclase comprisea...mafic plutoniccomplexesand ortho- prevalentin the mine vicinity. Most abundantare metadioriteand metagabamphibolites...duction from Precambrian ores. pyroxenitein the mine workingsconsistschieflyof uralitizedort.hopyroxeneand |  | | Book | | approximately 5 cm taii and is from the Eagle's Nest mine, Piacer County, California. Ross Beaty Collection.... . . . . . . .. 18 Cassiterite . . ..20 Chalcocite . . . . . . . . . . . . . . . . . . . . . . .... • .. .•.••...••••. . . . . .. .•. .... 14 Chalcocite . ........ ..... .. .... Chalcopyrite • ....References: Chace F.M. (1956) Abbreviations in field and mine geclogical mapping. Economic Geclogy, v. 51, p....Metallogeny of the Proterozoic Rocks of Thunder Bay District, Ontario. PhD. thesis. University of Western Ontario |  | | Journal (issue) | | Twenty-three, Number Three ® Articles Gold in South Africa ..............................................Cairncross & C. R. Anhaeusser Minerals of the Linwood mine, Scott County, Iowa ............. 231 by P. L. Garvin...and this must have introduced him to many other local mineral collectors and possibilities for further...of this typically natrolite covered material for local dealers as well as himself. He used much of this...in the still open underground workings of the Gem mine. He encountered an open pocket containing well formed |  | | Book | | Stellenbosch, Private Bag X 01, Matieland 7602, South Africa V.C. BENNETT Research School of Earth Sciences...KwaZulu-Natal, Private Bag X 54001, 4000 Durban, South Africa (hofmann@ukzn.ac.za) K. HORIE Department of...Stellenbosch, Private Bag X 01, Matieland 7602, South Africa (kisters@sun.ac.za) T. KOMIYA Department of...Stellenbosch, Private Bag X 01, Matieland 7602, South Africa (jfmoyen@wanadoo.fr) P.A. MUELLER Department...Stellenbosch, Private Bag X 01, Matieland 7602, South Africa R.K. STEVENSON GÉOTOP-UQÀM-McGill and Département |  | | Book | | Stellenbosch, Private Bag X 01, Matieland 7602, South Africa V.C. BENNETT Research School of Earth Sciences...KwaZulu-Natal, Private Bag X 54001, 4000 Durban, South Africa (hofmann@ukzn.ac.za) K. HORIE Department of...Stellenbosch, Private Bag X 01, Matieland 7602, South Africa (kisters@sun.ac.za) T. KOMIYA Department of...Stellenbosch, Private Bag X 01, Matieland 7602, South Africa (jfmoyen@wanadoo.fr) P.A. MUELLER Department...Stellenbosch, Private Bag X 01, Matieland 7602, South Africa R.K. STEVENSON GÉOTOP-UQÀM-McGill and Département |  | | Journal (article/letter/editorial) | | elementsassociatedwith chromite. from the dunitcpipes(Mooihoek,Onverwacht,and Driekop)in theeasternpartof theBushveld Complex...layer f Major faults Potgietararu ,f f wS Steelpoort Wonderkopfault fault e Dunite pipas Naboomspruit...Western BushveldComplex Thickness (cm) North South Northwest 90 to 155 15to 255 ? 15to 150 15...15to $0 85 to 220 50 to 200 8 to 28 Central South 60 to 140 90 to 220 $05to $70 75 to 140 5 to...considered,there is even a local increase from west to east within the south- Platinum-groupelement contentsof |
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