 | | Journal (article/letter/editorial) | | The THABAZIMBI Mine Cave Limpopo Province, South Africa Downloaded by [University of California Santa...Gauteng, South Africa brucec@uj.ac.za ALLAN FRASER PO Box 369 Fourways 2055 Gauteng, South Africa. mineralman@telkomsa...Iron Ore PO Box 9679 Centurion 0046 Gauteng, South Africa stuart.macgregor@angloamerican.com Figure 1...Cairncross The Thabazimbi mine cave in South Africa contains fine examples of aragonite speleothems. The cave...and/or damaged by human or animal activity. N SOUTH AFRICA, the Transvaal Supergroup comprises a geological |  | | Journal (article/letter/editorial) | | Transvaal carbonate platform, Kaapvaal Craton, South Africa Dawn Y. Sumner Department of Geology, University...Park, 2000 South Africa e-mail: njb@na.rau.ac.za Ā© 2006 March Geological Society of South Africa ABSTRACT...~2.67 to ~2.46 Ga lower Transvaal Supergroup, South Africa, consists of a mixed siliciclastic-carbonate...carbonate platform of the Transvaal Supergroup, South Africa, is one such platform (Beukes, 1980; 1987; Sumner...folding and faulting in the Kheis Belt and the SOUTH AFRICAN JOURNAL OF GEOLOGY, 2006, VOLUME 109 PAGE |  | Mƶller, V., Klemd, R., Joachimski, M., Barton, J.M. (2014) Hydrothermal controls on iron and lead mineralization on the farms Leeuwbosch and Cornwall, Thabazimbi District, South Africa. Ore Geology Reviews, 63. 40-63 doi:10.1016/j.oregeorev.2014.04.009 | Journal (article/letter/editorial) | | farms Leeuwbosch and Cornwall, Thabazimbi District, South Africa V. Mƶller a,b,1, R. Klemd a, M. Joachimski...of Fort Hare, Private Bag X1314, Alice 5700, South Africa a r t i c l e i n f o Article history: Received...a c t The Paleoproterozoic Malmani Subgroup and Penge Formation (Transvaal Supergroup) exposed on the...Leeuwbosch and Cornwall north of Thabazimbi (Limpopo Province, South Africa) host hydrothermal PbāAgā CuāZn and...deposits which include the historic Leeuwbosch lead mine. Based on ore petrography, ļ¬uid inclusion and stable |  | | Journal (article/letter/editorial) | | wo]framite, 995. Pengenna mine, St. Kew: meneghinite, 424. South Terras mine, St. Stephen-in Brannel:...milarite, rhodizite, lvii. Shallowford Bridge, South ]lolton : meneghinite, 424. INDEX Yorkshire Turf...argentojarosite, li. WALES Benallt mine, Rhiw, Caernarvonshire: celsian, 508. Clogau mine, Dolgelly, ~ier.ionethshire:...ionethshire: tellurbismuth, 424. Vigra mine, Dolgelly, Merionethshire: tellurbismuth, 424. SCOTLAND Morar... Rome: leucite, 596. Gulf of Venice: ferroan aragonite, 781. Monte Catini, Tuscany: leucite, 596. Vesuvius: |  | | Book | | Struik Nature (an imprint of Penguin Random House South Africa (Pty) Ltd) Reg. No. 1953/000441/07 The Estuaries...Century City, 7441 PO Box 1144, Cape Town, 8000 South Africa Visit www.randomstruik.co.za and join the Struik...published edition, 2015: Penguin Random House South Africa (Pty) Ltd Publisher: Pippa Parker Managing editor:...Hatfield Campus, University of Pretoria Pretoria, South Africa Dr Lynnette Greyling Department of Geological...Town Private Bag X3 Rondebosch 7701 Cape Town, South Africa Note: The authors and the publishers cannot | | | Book | | Struik Nature (an imprint of Penguin Random House South Africa (Pty) Ltd) 1953/000441/07 Reg. No. The Estuaries...Century City, 7441 PO Box 1144, Cape Town, 8000 South Africa Visit www.randomstruik.co.za and join the Struik...published edition, 2015: Penguin Random House South Africa (Pty) Ltd Publisher: Pippa Parker Managing...Hatfield Campus, University of Pretoria Pretoria, South Africa Dr Lynnette Greyling Department of Geological...Town Private Bag X3 Rondebosch 7701 Cape Town, South Africa Note: The authors and the publishers cannot |  | | Journal (article/letter/editorial) | | the 2.52 Ga Campbellrand carbonate platform (South Africa). Shale-normalised rare earth element and yttrium...Campbellrand Subgroup, Transvaal Supergroup, South Africa. An interlayered volcanic tuff bed in the Campbellrand...1977). Scherer and Seitz (1980) showed that aragonite coral skeletons that had been replaced by calcite...of Montana. However, REE mobilisation was only local in nature and did not affect limestones that were...diagenetic overprint and facilitates recognition of local late diagenesis. The selected samples were drilled |  | | Journal (article/letter/editorial) | | country should he on view in the ācity of gold.ā South Africa is not well known for its institutional or statefunded...treasures of the earth. not only from South Africa but also from southern Africa as a whole and other regions...Mines and the Museum of the Geological Society of South Afiicil (Kennedy 1970). The Chamber of Mines collection...secretary and treasurer of the Geological Society of South Africu.) Several years later, in 1904, the collection...mammal-like reptiles from the famous Karoo region of South Africa, Cretaceous ammonites, Permian and Triassic |  | | Journal (article/letter/editorial) | | 801. Age determinations: monazite, sphene, South-west Africa, 519; charnockites, Andhra Pradesh, India...Almandine, Israel, anal., opt., cell-size, 385; New South Wales, anal., opt., X-ray, 561; Rajasthan, India...in, 46; classification of, lxv, 945. Andamoolca, South Australia, opal, 429. Andalusite, pseudomorphs of...Congo, anal., 995. Antimony, geochemistry of, 88. Aragonite, ferroan, Adriatic Sea, anal., X-ray, 781. Ardara...ternperature, formation of secondary minerals, 408; New South Wales, anal. of glass in, 847. BASDEN (I~.), see |  | Paris, Guillaume, Fischer, Woodward W., Johnson, Jena E., Webb, Samuel M., Present, Theodore M., Sessions, Alex L., Adkins, Jess F. (2020) Deposition of sulfate aerosols with positive Ī33S in the Neoarchean. Geochimica et Cosmochimica Acta, 285. 1-20 doi:10.1016/j.gca.2020.06.028 | Journal (article/letter/editorial) | | across the Campbellrand-Malmani platform in South Africa. Results illustrate that within this comprehensive...values measured in Paleoarchean barites from South Africa, India and Australia (Bao et al., 2007; Philippot...Geological context The Transvaal Supergroup in South Africa is preserved in two distinct structural basins...(Kuruman Iron Formation in Griqualand West and the Penge Iron Formation in the Transvaal). Compared to...carbonate/chert layers and finally into the Penge Iron Formation. The Penge and Kuruman Iron formations cap the |  | | Journal (article/letter/editorial) | | negative Eu anomaly when patterns are normalised with local tonalite gneiss strengthens this interpretation...as the early Archaean gneisses of south-central Zimbabwe. A local ancient (3.5ā3.8 Ga) source is also...deformation structures. Orpen and Wilson (1981) described local geology and complex field relationships and first...and Weiner, 1985, 1989) and then mediating the local fluid environment so as to maintain elevated alkalinity...but also by differences in skeletal minerals. Aragonite skeletal material will almost invariably contain |  | BlƤttler, C. L., Kump, L. R., Fischer, W. W., Paris, G., Kasbohm, J. J., Higgins, J. A. (2017) Constraints on ocean carbonate chemistry and pCO2 in the Archaean and Palaeoproterozoic. Nature Geoscience, 10 (1) 41-45 doi:10.1038/ngeo2844 | Journal (article/letter/editorial) | | selected as the bestavailable candidates to express local evaporative distillation of calcium in such ancient...Campbellrand Platform (Transvaal Supergroup, South Africa) is a well-preserved carbonate rampto-shelf...influence the buffering capacity of seawater to local changes in DIC and ALK; with higher DIC increasing...Campbellrand Subgroup, Transvaal Supergroup, South Africa. Precambrian Res. 79, 25ā35 (1996). 14. Beukes...Campbellrand Subgroup, Transvaal Supergroup, southern Africa. Sediment. Geol. 54, 1ā46 (1987). 15. Sumner, D |  | | Journal (article/letter/editorial) | | difference the Helen SVOP-IF (Goodwin,1962). The local between band thicknesses of MECS-IF ironstone in...Pisolitic-Timeball SCOS Magnetic-Timeball MECS Kuruman q- Penge MECS Hotazel MECS MECS MECS MECS Boolgeeda-Hamersley...all ages. Someironstone in Silurian in both South Africa Clinton SCOS-IF of New York State doesnot...Dolomiteof South Africa, underlyingthe fannaand flora typicallyalsoindicateshallowxvater. Penge MECS-IF...respectively,nonooliticconcentrations of in South Africa is closelyassociatedwith a coal bed glauconite |  | Morgan, Rachael, Orberger, Beate, RosiĆØre, Carlos A., Wirth, Richard, Carvalho, Camila da Mota, Bellver-Baca, M. Teresa (2013) The origin of coexisting carbonates in banded iron formations: A micro-mineralogical study of the 2.4Ga Itabira Group, Brazil. Precambrian Research, 224. 491-511 doi:10.1016/j.precamres.2012.10.013 | Journal (article/letter/editorial) | | Hooggenoeg Formation (Barberton Greenstone Belt, South Africa; Rouchon et al., 2009). Carbonates inferred...appearance of local intertidal carbonate deposits in the ā¼3.0 Ga Nsuze Group (South Africa; Beukes and...Simonson et al., 1993) and Transvaal Supergroup (South Africa; Altermann and Siegfried, 1997). The ā¼2.6ā2...carbonate platform in the Transvaal Supergroup (South Africa) is the largest preserved platform representing...present in situ precipitations of calcite and/or aragonite that were later dolomitised (Sumner and Grotzinger |  | | Book | | of Canada, and of the Transvaal Supergroup of South Africa, are syntheses considerably superior t o any...University, Auckland Park, PO 524, Johannesburg 2000, South Africa. J.A. BUNTING Exploration Department, BHP...DEPOSITIONAL BASIN O F THE TRANSVAAL SUPERGROUP. SOUTH AFRICA N.J. Beukes Introduction . . . . . . . . ..... . . . . . . . . . . . . . . Correlation with Penge Iron Formation and regional depositional model ...Anomaly. U.S.S.R., 480 - TransvaalGriquatown. South Africa. 4 8 0 - Minas Gerais. Brazil. 4 8 1 - Hamersley |  | Lin, Yongjie, Zheng, Mianping, Ye, Chuanyong, Power, Ian M. (2019) Rare earth element and strontium isotope geochemistry in Dujiali Lake, central Qinghai-Tibet Plateau, China: Implications for the origin of hydromagnesite deposits. Geochemistry, 79 (2) 337-346 doi:10.1016/j.chemer.2019.02.002 | Journal (article/letter/editorial) | | derived from the ancient Selin Co basin due to local uplift caused by the tectonic movement. The margins...groundwater in the alluvial plain of a coastal watershed, south-eastern Tanzania. J. Geochem. Explor. 130, 1ā14...hydrothermal carbonate deposits from Lake Tanganyika, east Africa. Geochim. Cosmochim. Acta 64, 287ā298. https://doi...elements in the Penge and Kuruman iron-formations, Transvaal Supergroup South Africa. Precambrian Res...associated with hydromagnesite and needle-ļ¬ber aragonite deposits in a karstic cave (Altamira, Northern |  | | Journal (article/letter/editorial) | | Griqualand West basin, Transvaal Supergroup, South Africa were dated using the Perth Consortium Sensitive...precipitating microbiota. The Kaapvaal craton of southern Africa hosts three major Archaean to Palaeoproterozoic...West basin in the Northern Cape Province of South Africa and the Kanye basin of Botswana share lithostratigraphically...quartzites, siltstones and lava. According to the South African Committee for Stratigraphy (SACS, 1980)...sample dated by Sumner and Bowring (1996) was taken south of Kuruman. Note Prieska region southwest of Griquatown |  | | Catalog/List | | l~lt". Ā£4.50. 6. 7. -. 8. AZURITE. Copper Queen Mine, Bisbee, Cochise Co., Arizona, U.S.A. Bright, sparkling...colourful specimen., 3i;x2txlt". Ā£14.00. AZURITE. TVnagh Mine, Co. Galwav, Eire. Select bright blue small sparkling... 12. 13. 14. 15. 16. -2BARYTES. Hailemoor Mine, Egremont, West Cumberland. Specimen A - Choice...specimen. 3tx2~-x2". Ā£8.00. BARYToCALCITE. Nentsberry Mine, Alston Moor, Cumberland. Fine, sharp, creamy spear-like...mineral and the sample came from an area of the mine known as the Admiralty Flats, a lease which belonged |  | | Journal (article/letter/editorial) | | under-estimate of seawater 87Sr/86Sr ratios if a local hydrothermal component was present during mineral...at other locations, were probably originally aragonite (Sumner and Grotzinger, 2000). Detailed sample...higher Sr contents, consistent with the inferred aragonite precursor of the fans (Edwards et al., 2015 and...interpretation that the crystal fans were originally aragonite, which has substantially higher Sr contents than...measured in the 2.5 Ga Campbellrand carbonates of South Africa reflect a significantly lower seawater Sr residence |  | | Book (volume) | | Papers and Discussions Volume I , I JOHANNESBURG SOUTH AFRICAN INSTITUTE OF MINING AND METALLURGY 1961... 01", ~TALLUf>iYY. Ā© Copyright 1961 by The South African Institute of Mining and Metallurgy Ext'racts...I (1v DEC 196f Printed in t!te Republic of South Africa by Hortors Limited, Johannesburg V r. 1 The...and n1anagement of the gold mining industry in South Africa -C. B. ANDERSON . . . . . . . . . page r J ... ( 2. The economy of the Union of South Africa-W. J. BusSCI-IAU 9 3. An introduction to the physical |  | | Book (edition) | | Southern Africa a Collectorās Guide ā Rocks, Minerals and Gemstones of Southern Africa & ā - ... T ~ '' .rats en&nes L of Southern Africa A Collectorās Guide - Struik Publishers (an operating...typical accessory mineral from the world famous Tsumeb mine Overleaf: Crystalline incrustations of vanadinite...suggestions and advice. Authorās 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 |  | Tong, Hongpeng, Feng, Dong, Peckmann, Jƶrn, Roberts, Harry H., Chen, Linying, Bian, Youyan, Chen, Duofu (2019) Environments favoring dolomite formation at cold seeps: A case study from the Gulf of Mexico. Chemical Geology, 518. 9-18 doi:10.1016/j.chemgeo.2019.04.016 | Journal (article/letter/editorial) | | Key Laboratory of Ocean and Marginal Sea Geology, South China Sea Institute Institute for Geology, Center...compositions dominated by high Mg-calcite (HMC) and aragonite, but also including low Mg-calcite (LMC) and dolomite...Ridge, the Niger Delta, off Costa Rica, and the South China Sea (e.g., Roberts and NU Aharon, 1994;...(Roberts et al., 2010). The primary reasons for the local abundance of oil and gas seeps are the combined...Roberts et al., 1990; Roberts and Aharon, 1994). The local faults were initiated by salt PT diapirism. Dive |  | Bolhar, Robert, Hofmann, Axel, Siahi, Mehrnaz, Feng, Yue-xing, Delvigne, Camille (2015) A trace element and Pb isotopic investigation into the provenance and deposition of stromatolitic carbonates, ironstones and associated shales of the ā¼3.0 Ga Pongola Supergroup, Kaapvaal Craton. Geochimica et Cosmochimica Acta, 158. 57-78 doi:10.1016/j.gca.2015.02.026 | Journal (article/letter/editorial) | | 2050, South Africa Department of Geology, University of Johannesburg, Auckland Park 2006, South Africa...Department of Earth Sciences, Royal Museum of Central Africa, 3080 Tervuren, Belgium b Received 11 April 2014;...University of the Witwatersrand, Wits 2050, South Africa. http://dx.doi.org/10.1016/j.gca.2015.02.026...preserved supracrustal rocks can be found in South Africa, represented by the Pongola and Witwatersrand...ca. 3.0ā2.9 Ga ago on continental crust of the south-eastern part of the Kaapvaal Craton (Fig. 1; Gold |  | | Catalog/List | | RAINBOW OF AFRICA GEM & MINERAL COLLECTION Front Cover: Gems from the Rainbow of Africa Collection... Heritage SignatureĀ® Auction #5236 The Rainbow of Africa Collection Gems & Minerals October 15, 2015 | New...SignatureĀ® Internet Session 2 Heritage Auctions Design District Annex 1518 Slocum Street ā¢ Dallas, TX 75207 (HERITAGELive...RAINBOW OF AFRICA COLLECTION You have in front of you our presentation of the Rainbow of Africa Collection:...The mineral riches of Africa are not the only things making up the Rainbow of Africa Collection. For the |  | | Journal (article/letter/editorial) | | conditions in the paleo-groundwater at the Samkwang Mine Site, Korea (Lee et al., 2003). Hence the YREE abundance...previous study of YREE geochemistry at the Tono Mine two kilometers north-east of the present study area...bedrock granite, the ā150 m groundwater in Tono Mine and the present-day ā500 m deep groundwater (Fig...from the Toki granite by KNA-6 borehole in the Tono Mine was also slightly alkaline (8.2 and 8.5). The concentration...groundwater from granite (KNA-6 borehole) in the Tono Mine (Arthur et al., 2006), higher than that in the present-day |
|
