 | | Journal (article/letter/editorial) | | University of Natal , Pietermaritzburg, 3200, South Africa d U.S. Geological Survey , Box 25046, Mail...University of Natal, Pietermaritzburg 3200, South Africa AND ROY KNIGHT Downloaded by [ECU Libraries]...LGS (Dennilton, Verena-Balmoral, Enkeldoorn, Sekhukhune Plateau, Zaaiplaats-Potgeitersrus, and Western...50978 Âą 8 and ÎľCHUR = -5.12. Samples from the Sekhukhune Plateau have higher l 4 3 Nd/ l 4 4 Nd ratios...Bushveld Complex (BC) of the central Transvaal, South Africa (Figs. 1 and 2), consists of three major rock |  | | Journal (article/letter/editorial) | | variousopinions part of the BushveldComplex of South Africa. In which havebeen expressedon the natureand...geologicstudieshave been made on the the granophyre(Hall, 1932); and formationof the BushveldComplexanda...related and Molengraaff (1924), Daly (1928), and Hall to the Rooiberg Group) by the Nebo Granite (Du (1932)...Zwartbank Pseudogranophyre Diepkloof Granophyre Stavoren Granophyre Rooikop Porphyry 2,024 2,052 2,051...Sequence Zooiploot: T Iâ˘-â˘AN S V A A L Ă Nylstroom Stavoren Rustenburg _a_Br-â˘s- - Middenbur PRETORIA |  | Scoates, James S, Wall, Corey J, Friedman, Richard M, Weis, Dominique, Mathez, Edmond A, VanTongeren, Jill A (2021) Dating the Bushveld Complex: Timing of Crystallization, Duration of Magmatism, and Cooling of the Worldâs Largest Layered Intrusion and Related Rocks. Journal of Petrology, 62 (2) doi:10.1093/petrology/egaa107 | Journal (article/letter/editorial) | | Paleoproterozoic Bushveld Complex in the Kaapvaal craton of South Africa includes an immense layered intrusion characterized...magmatism. GEOLOGICAL SETTING OF THE BUSHVELD COMPLEX South Africaâs Bushveld Complex intruded into the Kaapvaal...Diorite Rooderkraal Complex Moshaneng Granite Marble Hall Diorite Uitkomst (diorite) Upper Zone Upper Zone... stratigraphic relations, and xenolith studies (Hall, 1932; Cawthorn & Walraven, 1998; Webb et al., 2011)...contemporaneous volcanic rocks of the Rooiberg Group, the Stavoren Granophyre of the Rashoop Granophyre Suite, and |  | | Journal (article/letter/editorial) | | Caesars âsomething newâ has ever been coming âout of Africa.â Nowadays geologists are there finding novelties...copper deposits of Katanga in the center, and in the south the Ehodesian âGreat Dike,â the clear evidences...all these and many other newer discoveries in- Africa are { f ^ ' i n g the very foundations of general...readily accessible to geologists outside of South Africa, and the majesty of the Bushveld Complex, with...support of the Geological Survey of the Union of South Africa, which has its headquarters at Pretoria. Dr |  | | Journal (article/letter/editorial) | | level in the north and become shallower to the south. Communicated by Timothy L. Grove. Electronic supplementary...Intrusion of Antarctica, and Bushveld Complex of South Africa. The Bushveld Complex is part of the massive...limb alone crops out for more than 150 km northâsouth. Due to the enormous size of the Bushveld, the roof...immediate roof in four locations from north to south in the eastern limb. The present report builds on...recrystallized, 13 Contrib Mineral Petrol (2015) 170:56 quartz-feldspar, meta-volcanic or metasedimentary, supracrustal |  | | Journal (article/letter/editorial) | | Department, Pretoria University, Hillcrest 0002, South Africa Received: 17 May 1994/Accepted: 9 December 1994...Box 91230, Auckland Park, 2006, Johannesburg, South Africa ** Anglo American Research Laboratories, P.O...O. Box 106, Crown Mines, 2025, Johannesburg, South Africa The events comprising the Bushveld Complex...Granophyre Suite, RGS; SACS, 1980) in southern Africa are of enormous spatial extent. Volcanic rocks...International Boundary 24 o- / SOUTH AFRICA I ... BOTSWANA - F Fragment / Stavoren/Makaok?~an~ + "e + + |  | | Journal (article/letter/editorial) | | inevitable temporary eclipse due to war conditions, our local geological societies are now making praiseworthy...new section in Glacial deposits and Oolites near South Cave ; by Mr. Sheppard on the water supply of Hull...MUTUE FIDES-STAVOREN TINFIELDS. By PERCY A. WAGNER, Ing.D., B.Sc, etc. Union of South Africa Geological...general conditions and physical features of " ^ the district, the writer deals at some length with the petrology...Mining Camp, B.C. showing all variations from pure quartz to pure felspar. The quartzrich pegmatites predominate |  | | Journal (article/letter/editorial) | | cumulates to granitoids in the Bushveld Complex, South Africa: Examples from the western and eastern limbs...cumulates to granitoids in the Bushveld Complex, South Africa: Examples from the western and eastern limbs...cumulates to granitoids in the Bushveld Complex, South Africa: Examples from the western and eastern limbs...University of the Witwatersrand, P.O. Wits, 2050, South Africa Corresponding author: Jo ur na lP Ole Skursch...cumulates to granitoids in the Bushveld Complex, South Africa: Examples from the western and eastern limbs |  | | Journal (issue) | | Articles Famous mineral localities: The Castle D om e district, Yuma County, A r iz o n a ..................... Hay M icrominerals from the Bushveld Complex, South A f r ic a .......................................from the Elura lead-zinc-silver mine, No. 1 Level, Cobar, New South Wales, Australia. Mined in 1988 by...noticed about the previous issue on the Sweet Home mine was the peel-off temporary cover. The story behind...red is what it was all about for the Sweet Home mine! Had the rhodochrosites not been found in that stunningly |  | | Journal (article/letter/editorial) | | microminerals of Mont Saint-Hilaire, the Evans-Lou mine, and other unusual localities in southern QuCbec...species. Jerry gave a great deal of support to local mineral organizations and became widely known in...time to fill. Our second loss was that of Charlie Hall. Charlie, a southem gentleman to the core, made...(MineralogicalRecord, 1993). Figure 1. The late Charlie Hall enjoying life at the Northern California Mineralogical...Friday evening receptions in the basement of a local church! At Redlands, after a potluck dinner, the |  | | Journal (article/letter/editorial) | | are ferroan. The ferroan rocks also include the Stavoren Granophyre, which exists regionally as a seve...Shango Solutions, P.O. Box 2591, Cresta 2118, South Africa the ferroan lavas indicate formation by fractional...compositional characteristics and geologic relations, the Stavoren Granophyre is the most likely candidate for the...Critical Zone Rooiberg Felsite RLS Main Zone Stavoren Granophyre RLS Upper Zone Leptite RLS Floor...originally comprised a melt sheet at least 350 km northâsouth by more than 650 km eastâwest. Overlying the RLS |  | | Journal (article/letter/editorial) | | Studies of the Rooiberg Group, Bushveld Complex, South Africa: No evidence for an impact origin P.C. Buchanan...Witwatersrand, PriĂate Bag 3, Wits 2050, Johannesburg, South Africa Received 18 July 1997; revised 11 November 1997;...been suggested that the Bushveld Complex of South Africa could be the result of multiple large meteorite...sedimentary breccias. The presence of needles of quartz that may represent paramorphs after tridymite in...rocks represent superheated impact melt. However, quartz paramorphs after tridymite have been recognized |  | Cook, Robert B. (2017) Microminerals of the Bushveld Complex, South Africa by Maria T. Atanasova, Bruce Cairncross, and Wolfgang R. Windisch. Council for Geoscience, 280 Pretoria St., Silverton, Private Mail Bag 112, Pretoria 0001, South Africa; www.geoscience.org.za. 437 pages; 2016; R1,000 (US $74) plus shipping and handling (hardbound). Rocks & Minerals, 92 (3) 293 doi:10.1080/00357529.2017.1283666 | Journal (article/letter/editorial) | | 2017 Microminerals of the Bushveld Complex, South Africa by Maria T. Atanasova, Bruce Cairncross, and...Silverton, Private Mail Bag 112, Pretoria 0001, South Africa; www. geoscience.org.za. 437 pages; 2016; R1...techniques, and over twenty minerals new to South Africa were identified during research for the text...alphabetically beginning with the Argent silver mine and ending with the Vergenoeg flu- orite deposit...Boekenhouthoek quartz locality, the Buffalo fluorite mine, the Edendale lead-zinc mine, the Houtenbek |  | | Journal (article/letter/editorial) | | A. LEUBE PART II. PETROLOGY, AND SOUTH TIN MINES, AFRICA E. F. STUMPFL MINERALOGY AND GEOCHEMISTRY.......................................... 531 B-Mine (Nieuwpoort) .....................................packingand somerecrystallization (especially of quartz), however,have takenplace.Thus,thesubrounded character...many C LAY (serocite. chlorate) FELDSPAR 25 QUARTZ (and chert) Fzc. 19. Position of Rooiberg arkosites...They replacefeldsparespecially,but commonlyattack quartz, too, and thus producecharacteristic patterns. |  | | Journal (article/letter/editorial) | | plateau, 4 = Tauteshoogte, 5 = Loskop Dam,6 = Stavoren fragment, 7 = Rooiberg fragment. Alsoshown arethestudy... andpyroclastic flows(.v ,) Intrusive Level Stavoren Fragment FIG.2. Regional stratigraphic subdivision...andclinopyroxenes in theupperpor- rocksisalteredto quartz,chlorite,andepidote; tionof the Dullstroom Formation...rocks silicification is associated with calcite,quartz,epidote,and Chayes(1966)andIrvineandBaragar(1971)considered...rmation.The basalrhyoliteoccurrences from the Stavoren fragment(n = 7) are normalized to their equivalents |  | | Report (volume) | | __________________ New South Wales___________________________ Victoria_________________________________ South Austra... ILLUSTKATIONS >Fage PLATE I. Molybdenite from quartz veins: A, From Railroad Creek near Lake Chelan...Calif______________________ II. Silicified and sericitized quartz porphyry (?) carrying molybdenite along veinlets...molybdenite, from a pipe in quartz monzonite in the Deep Creek Mountains, 4 miles south of Gold Hill, Tooele...County, Utah; B, Sericitized quartz porphyry breccia with a cement of quartz, sericite, and molybdenite_________________ |  | | Journal (article/letter/editorial) | | detachment in my right eye while visiting mines in Africa. The restorative operation in Moshi, Tanzania,...was associated with a member of the Micromounters Hall of Fame. Much of his collection has reached the...talented artist. One of his watercolors of the Levant mine in Pendeen, Cornwallâa prized gift in 2001âhangs...included his adventures in locating the Green Monster mine and identifying the copper vanadate minerals occurring...Housely spoke on Glimpses of History of the Blue Bell Mine, in which he began by describing the first claims |  | | Journal (article/letter/editorial) | | investigations of some orogenic belts in Central Africa. - - Res. Instit. African Geol., Univ. Leeds, 1Oth...geochronology of Zambia and adjacent parts of Central Africa. - - Canad. J. Earth Sci., 5, 621--628, 1968. VAIL...Bushveld granites around Rooiberg, Transvaal, South Africa*) By PASQUALEIANNELLO,Francistown **) With 11...of the author: Anglo-American Corporation of South Africa (Pry) Ltd. P.O. Box 326, Francistown, Botswana...Bushveld granites around Rooiberg, Transvaal South Africa Abstract The detailed investigation of the |  | | Journal (article/letter/editorial) | | Province: The Rooiberg Group, Kaapvaal Craton, South Africa Nils Lenhardt â , Patrick G. Eriksson Department...Geology, University of Pretoria, Pretoria 0002, South Africa a r t i c l e i n f o Article history: Received...volcanism Large Igneous Province Rooiberg Group South Africa Volcanic evolution a b s t r a c t The volcanic...deposited on the stable Kaapvaal Craton in northern South Africa. Although the Rooiberg Group is stratigraphically...in detail. Most previous studies have involved local ďŹeld mapping in separate areas, together with minor |  | | Journal (article/letter/editorial) | | being introduced to micromounting by Micromounters Hall of Fame member Phil Evanoff, he was captured by...Barstow, California. At the north shaft of the Pedry mine, one group located wulfenite, while the other group...saw tables laden with freebies at the rear of the hall and several microscopes available on side tables...a professional organization. The container held quartz crystals from Cap Diamant in QuCbec, Canada. Aside...seventeenth century to the creation of the Micromounters Hall of Fame. Sunday morning brought me back with Some |  | | Journal (article/letter/editorial) | | arsenopyrite, galena, sphalerite and chalcopyrite with quartz, feldspar, limonite, siderite, muscovite, biotite...and topaz as accessory minerals." about 8 miles south (S.S.E. to be exact) of Yellville, on a bee-line...the center of the county. I do not know if this mine is still in operation, as I haven't any recent report...Greenockite. "turkey fat", was on display at our recent local mineral show, as several nice specimens, by one...of the dealers ; however I did not ask from what mine these were from." ARIZONAâWe recently received |  | | 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 âhandbook on the mineral resources of South Africa, it has become necessary to revise, or rather...great diversity and magnitude of South African mineral deposits and local mining operations, the Economic...Chamber of Mines of South Africa with Mr G. H. Grange as co-ordinator, and the South, African mining industry; |  | | Journal (article/letter/editorial) | | scorodite, and some scorodite from the large Gold Quarry mine in Nevada contains significant phosphorus and vanadium...at the cobalt mine at Great Hill north of Cobalt, Middlesex County; the Booth bismuth mine at Monroe, Fairfield...Fairfield County; and the arsenic mine between Seymour and Derby on the west bank of the Naugatuck River...Januzzi 1976). It has also been found in the Wheeler mine, Merrimack County, and in the Parker Mountain pegmatite...the old arsenic mine at Warwick, Orange County, and similarly at the arsenopyrite mine at Pine Pond near |  | | Journal (article/letter/editorial) | | African literature is essentially concerned with local areas within each country, only one country is represented...The geology and physiography of parta of Ncheu, South Syasa and Upper Shire districti: Nyaaaland Geol...dolerite, gabbro. norite. amphibolite, pyroxenite, quartz diorite. BALL, JOHE: (1912) The meteorite of El...Belgian Congo: 9; basalt, gebbro, quartz gabbro, tonalite, quartz anorthosite. granite. BODIN, LBON (1961)...107 pp. Ft. Weat Afr.: 35; granite, granodiorite, quartz diorite, diorite. monzonite, plauenite, amphibolite |  | | Journal (article/letter/editorial) | | STEWARTIsland is a rugged,bush-cladislandlying off the south coastof New Zealand. It is composedmainly of granific...consistsof alternatinglaminâ˘eof light and dark mica. Quartz is not presentin all samplesof the schist' it may...processeswere not unconnectedwith the introduction of a quartz-magnetite-sericitefinal ichor that penetrated fracture-systemsin...crystallized as a fine-grained#reisencomposed mainly of quartz, topaz, and micas. c. A liquid metalliferousresiduethat...mainly faint-brown mica, but green spinel (gahnite), quartz, and muscovitewere also recognized. The absenceof |
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