 | | Journal (article/letter/editorial) | | Mineralogy and Petrology 9 Springer-Verlag 1994 Sudoite in the Archaean Witwatersrand Basin Tahie Zhou...20, 1993 / Accepted October 15, 1993 Abstract. Sudoite, with almost ideal composition of MgzA14Si3Olo(OH)8...Khaki shale of the Witwatersrand Basin, South Africa. The sudoite occurs in aggregates of elongate bundles...assemblage of sudoite - pyrophyllite - muscovite - quartz - rutile pyrite. The stability of sudoite is attributed...similar metamorphic conditions. As the first find of sudoite in the Archaean, this occurrence in the Witwatersrand |  | ZHOU, T., DONG, C., PHILLIPS, G. N. (1994) Chemographic analysis of assemblages involving pyrophyllite, chloritoid, chlorite, kaolinite, kyanite, quartz: application to metapelites in the Witwatersrand goldfields, South Africa. Journal of Metamorphic Geology, 12 (5) 655-666 doi:10.1111/j.1525-1314.1994.tb00049.x | Journal (article/letter/editorial) | | metapelites in the Witwatersrand goldfields, South Africa T . ZHOU, G . D O N G A N D G . N . P H I L...constrained by the andalusite to kyanite, and the sudoite/chlol-ite to carpholite boundaries, i.e. 1.5-2...the Witwatersrand goldfields, and the local occurrence of sudoite indicate a consistent low-pressure environment...chloritoid, pyrophyllite, kaolinite, kyanite and/or sudoite, but fail to do so because of bulk rock compositional...of kaolinite and kyanite. Sudoite occurs in an MgO-rich pelite from Welkom (Zhou & Phillips, 1994). Assemblages |  | | Journal (article/letter/editorial) | | Genmin, P.O. Box 61820, Marshalltown, 2107, South Africa (Received November 4, 1992; revised version...biotite, pyrrhotite and arsenopyrite have more local distribution. Pelites ("shales"), quartzites, meta-conglomerates...Dome, Johannesburg, and other important towns (Welkom, W; Klerksdorp, K; Carletonville, C; Randfontein...~ O K ~AR N M A , N,EEF .: :" K'M ERL REEF WELKOM SEQUENCE ELDORADO ". ' , FORMATION ...,. •, "...~r' ...°o ,,~.,. •.; :,... Loraine ~ F r e e State Geduld Western ~ 0 25 50 km Hol ding~"~,~rereaident |  | | Report (chapter) | | Downloaded from http://sp.lyellcollection.org/ at Ohio State University Library on September 16, 2012 Geological...mineralization within the Witwatersrand Basin, South Africa: evidence for a modified placer origin, and...02 Email alerting service click here to receive free e-mail alerts when new articles cite this article... Downloaded from http://sp.lyellcollection.org/ at Ohio State University Library on September 16, 2012 Gold mineralization...mineralization within the Witwatersrand Basin, South Africa: evidence for a modified placer origin, and |  | | Journal (article/letter/editorial) | | PYRRHOTITE IN THE WITWATERSRAND GOLD FIELDS, SOUTH AFRICA TAIHE ZHOU, G. NEIL PHILLIPS*, GuoYI DONG,... Q = quartz, Qtz= quartzite, Rt = futile,Sud= sudoite, Tur = tourmaline. Po-PrlandPo-Kyarenotconsidered...crystals. Ventersdorp contact reef,Western DeepLevels south mine.Reflected light. Field of view = 2.7 mm. of... Ventersdorp contact reef, Western Deep LeveLs south mine. Cross polars. Field ofview = 1.3min. C.Intergrowth... Ventersdorp contact reef, Western Deep Levels south mine. Crossed polars. Field ofview= 2.1min.D.Round |  | | Journal (article/letter/editorial) | | margin of the Archaean Witwatersrand Basin of South Africa associated with regional greenschist facies...in producing gold deposits were the widespread local concentrations of C and Fe on unconformity surfaces...Sciences, University of Stellenbosch, Stellenbosch, South Africa 2 *Corresponding author, email neil@phillipsgold...model. Keywords: Gold, Witwatersrand, Archaean, South Africa, Metamorphism, Devolatilisation, Replacement...Origin of Witwatersrand gold 1 (A) Map of southern Africa showing the major Archaean cratons; the Witwatersrand |  | | Journal (article/letter/editorial) | | Cape Town, South Africa 2 Department of Geology, University of Stellenbosch, South Africa With 6 Figures...(reefs) in the late Archaean Witwatersrand Basin, South Africa. These data, supplemented by oxygen isotope...in the late Archaean Witwatersrand Basin in South Africa is famous for hosting the world's largest known...evidently detrital morphology in the Basal Reef, Welkom goldfield (Minter et al., 1993), occurs within...(italics) studied; K Klerksdorp, J Johannesburg, W Welkom Transvaal crustal thickening, burial metamorphism |  | | Journal (article/letter/editorial) | | University of the Witwatersrand, Johannesburg, South Africa With 7 Figures Received August 13, 1998; revised...Group shales from three boreholes to the east and south of the Vredefort Dome is lower greenschist facies...availability of exposure, as almost all of the central and south-eastern portions of the basin are covered by post-Witwatersrand...the deposition of the 2.6-2.2Ga Transvaal 126 South G. Stevens and R. F. Preston , Transvaal Supercjroup...Rand ~ West R a n d - Carletonville - Klerksdorp - Welkom Eo,9. ~ - Greenschist facies Amphibolite facies |  | | Journal (article/letter/editorial) | | blueschist facies. In particular, phase relations among sudoite (Sud), trioctahedral chlorite (Chl), carpholite...between carpholD ite, chloritoid, chlorite and sudoite with P-T is not known yet with an accuracy sufficient...(unpublished) 26 Omphacite Zone 27 Welkom goldfield Zhou & Phillips (1994) Zhou et al. (1994)...carpholite, Elb: Elenbergerite, Nam: Na-amphibole, Sud: sudoite, Rect: rectorite, other mineral abbreviations from...that D were not representative of an equilibrium state, we considered only those analyses that were made |  | | Book | | relevant protective laws and regulations and therefore free for general use. Product Liability: The publishers...Hong Kong 32/3145-5 4 3 2 1 0 - Printed on acid-free paper Preface An important prerequisite to the...recognition criteria of uranium mineralizations on a local (individual deposit) and regional scale (uranium...individual deposits or districts. (in brackets country, district, deposit reviewed): Adamek P. (Scandinavia), Adams...(general), Bernik J. (Yugoslavia), Brynard S.A. (South Africa, Namibia), Chenoweth W. (Colorado Plateau, USA) |  | | Report (issue) | | expensive task, as is getting acceptance by the local community. Some of these higher costs for nuclear... Langer Heinrich (Namibia) Witswatersrand (S. Africa), Blind River/ Elliot Lake (Canada) Streltsovsk...(Namibia), Ilimaussaq (Greenland), Palabora (S. Africa) Olympic Dam (Australia) Pervomayskoye (Ukraine)...Niger, Kazakhstan, Uzbekistan and the Karoo of South Africa. (3) Vein deposits occur as veins in metamorphic...(Namibia), Ilimaussaq (Greenland) and Palabora (South Africa). They tend to have low grades and comprise |  | | Book | | Sciences University of Cape Town Rondebosch, South Africa ISSN 2510-1307 ISSN 2510-1315 (electronic)...relevant protective laws and regulations and therefore free for general use. The publisher, the authors and...substance, including each mineral in the crystalline state, is distinguished by its characteristic, geometrically...occupied by 2s22p2 electrons, whereas in the excited state each of the electrons is situated in the 2s and...depending on the respective thermodynamic conditions of state. Examples of polymorphic minerals are orthorhombic |  | Gaines, Richard V., Skinner, H. Catherine W., Foord, Eugene E., Mason, Brian, Rosenzweig, Abraham, King, Vandall T. (1997) Dana's New Mineralogy (8th ed.) Wiley-Interscience. p.1872 | Book (edition) | | SINGAPORE - TORONTO This text is printed on acid-free paper. Copyright ©1997 by John Wiley & Sons, Inc...when mineralogy has close affiliation with solid-state physics, materials science, and inorganic chemistry...Smithsonian Inst., Washington, D.C. Alan Pring: South Australian Museum, Adelaide, SA, Australia. Gunnar...Norway. Richard J. Reeder: Dept. of Earth Sciences, State Univ. of N.Y., Stonybrook, NGY:. Louise Reif: U...10. India 11. South east Asia 12. Middle East 13. African Countries, from north to south 14. Oceania 15 |  | | Book | | Südaustralien (Orrorroo nördlich Adelaide) und New South Wales ließen Australien in kurzer Zeit zum wichtigsten...Blei-Silber-Zink-Lagerstätte ist Broken Hill in New South Wales (Australien), eine der größten Erzanhäufungen...on the emplacement of the Bushveld Complex, South Africa. Lithos 111:21–36 Hildreth W (2004) Volcanological...(1969) Pyroxenes of the Bushveld intrusion, South Africa. J Petrol 10:222–249 Boettcher AL, Burnham CW...relations of plagioclase at high pressures. New York State Mus Sci Mem 18:39–46 Longhi J, Boudreau AE (1980) |  | | Book | | Südaustralien (Orrorroo nördlich Adelaide) und New South Wales ließen Australien in kurzer Zeit zum wichtigsten...Blei-Silber-Zink-Lagerstätte ist Broken Hill in New South Wales, eine der größten Erzanhäufungen der Erde...(1969) Pyroxenes of the Bushveld intrusion, South Africa. J Petrol 10:222–249 Boettcher AL, Burnham CW...relations of plagioclase at high pressures. New York State Mus Sci Mem 18:39–46 Longhi J, Boudreau AE (1980)...Fe-Ni-Cu sulfides and host rocks, Insizwa, Southern Africa: Proof on coexisting immiscible sulfide and silicate |
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