 | | Report (issue) | | SURVEY OF SOUTH AFRICA COUNCIL FOR GEOSCIENCE GEOLOGICAL SURVEY OF SOUTH AFRICA MINERALOGY OF SOUTH AFRICA:... COUNCIL FOR GEOSCIENCE GEOLOGICAL SURVEY OF SOUTH AFRICA Scientific Editor R.D. Dixon Linguistic and...Council for Geoscience (Geological Survey of South Africa), 280 Pretoria Street, Silverton, Pretoria or........................... 69 5.1 Overview of South African Occurrences ..............................LAYEREDSUITE,BUSHVELDCOMPLEX.... 111 MINERALOGY OF SOUTH AFRICA: TYPE-MINERAL SPECIES AND TYPE-MINERAL NAMES |  | Hren, Michael T., Lowe, Donald R., Tice, Michael M., Byerly, Gary, Chamberlain, C. Page (2006) Stable isotope and Rare Earth Element evidence for recent ironstone pods within the Archean Barberton greenstone belt, South Africa. Geochimica et Cosmochimica Acta, 70 (6) 1457-1470 doi:10.1016/j.gca.2005.11.016 | Journal (article/letter/editorial) | | ironstone pods within the Archean Barberton greenstone belt, South Africa Michael T. Hren a,*, Donald R....m long) hematite and goethite ironstone bodies within the 3.2 to 3.5 Ga Barberton greenstone belt. We...and Rare Earth Element (REE) concentrations of goethite and hematite components of the ironstones to determine...surface and shallow subsurface spring systems. Goethite d18O values range from 0.7 to +1.0& and dD from...meteoric water. REE in the goethite and hematite are derived from the weathering of local sideritic ironstones |  | | Journal (article/letter/editorial) | | in the west-central part of the Barberton greenstone belt, South Africa, were analyzed by ion chromatography... Approximate Br-/Cland I-/Clratios of 3.2 Ga Barberton seawater are 2.5 X lop3 and 40 X 10e6, respectively...in the N 3.1-3.5 Ga Barberton greenstone belt of the Kaapvaal craton, South Africa, and interpreted as...pods are located in the west-central part of the Barberton greenstone belt in the Jamestown Ophiolite Complex...interpreted as fault talus. Chimney structures with goethite-rich rims, porous interiors, and linings of sugary |  | | Journal (article/letter/editorial) | | billion years ago at Schagen, East Transvaal district, South Africa YUMIKO WATANABE,1,* BRIAN W. STEWART,2...Abstract—A ⬃17-m paleosol sequence at Schagen, South Africa, which developed on a serpentinized dunite intrusion...fragments (and minerals) that were transported from local sources (serpentinite and granite) by fluvial and/or...the paleosol sequence were largely supplied from local sources (mostly serpentinite), but the Ca, Sr, and...areas of the Eastern Transvaal district (Mpumalanga Province), South Africa (Fig. 1). These paleosols developed |  | | Journal (issue) | | Twenty-three, Number Three ® Articles Gold in South Africa ..............................................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...lent a distinction to his stock of minerals that local dealers found hard to match. During his time with...later years he just purchased from the miners and local dealers. He did not like to be hurried, and drove |  | | Journal (article/letter/editorial) | | 4oAr/39Arage spectra from early Archean (-3.5 Ga) Barberton greenstone belt sediments: A technique for detecting...in the central part of the circa 3.2 to 3.5 Ga Barberton greenstone belt (BGB) have been analyzed by the...Geology, University of Cape Town, RondeLwsch7700, South Africa. 1933 1934 C. E. J. de Ronde et al. MOOD/ES...GRANOOmRlTES FIG. 1.Generalized geologymap of the Barberton greenstone belt (modified after ANHAEUSSER et...Bushveld igneous complex with respect to the Barberton mountain land. The striped pattern of the Bushveld |  | Hazen, R. M., Golden, J., Downs, R. T., Hystad, G., Grew, E. S., Azzolini, D., Sverjensky, D. A. (2012) Mercury (Hg) mineral evolution: A mineralogical record of supercontinent assembly, changing ocean geochemistry, and the emerging terrestrial biosphere. American Mineralogist, 97 (7) 1013-1042 doi:10.2138/am.2012.3922 | Journal (article/letter/editorial) | | 2005). The world’s largest Hg deposit, the Almadén district of central Spain, is representative of concentrations...reworking of the mercury-hosting rocks of the Almadén district (primary mineralization 427–380 Ma) led to at...west-central California. This important mining district, including the New Almadén mine in Santa Clara...in the literature. For example, the Hg mining district of Pike County, Arkansas, is hosted in Carboniferous...weathering during the Cretaceous or Tertiary, when goethite deposits formed in the banded iron formations | | | Journal (issue) | | Mowry Place Tucson, AZ 85741 Articles Gold in South Africa ..............................................and this must have introduced him to many other local mineral collectors and pos sibilities for further...of this typically natrolite covered material for local dealers as well as himself. He used much of this...lent a distinction to his stock of minerals that local dealers found hard to match. During his time with...later years he just purchased from the miners and local dealers. He did not like to be hurried, and drove |  | | Report (issue) | | 33 Fe2.00 (CO3 )(OH)16 4H2 O. (2) Bon Accord, South Africa; by electron microprobe; two partial elemental...rocks (Bon Accord, South Africa); on chromatite (Unst, Scotland). Association: Goethite, nickelian maghemite...willemseite, nimite, “opal”, quartz (Bon Accord, South Africa); honessite, hydrohonessite, theophrastite (Unst...Scotia talc mine, Bon Accord area, Barberton, Transvaal, South Africa. In the Hagdale quarry, Unst, Shetland...Creek, San Benito Co., California; in the Fremont district, Hidalgo and Luna Co., New Mexico; and at Barrett |  | Yoshiya, Kazumi, Sawaki, Yusuke, Shibuya, Takazo, Yamamoto, Shinji, Komiya, Tsuyoshi, Hirata, Takafumi, Maruyama, Shigenori (2015) In-situ iron isotope analyses of pyrites from 3.5 to 3.2Ga sedimentary rocks of the Barberton Greenstone Belt, Kaapvaal Craton. Chemical Geology, 403. 58-73 doi:10.1016/j.chemgeo.2015.03.007 | Journal (article/letter/editorial) | | pyrites from 3.5 to 3.2 Ga sedimentary rocks of the Barberton Greenstone Belt, Kaapvaal Craton Kazumi Yoshiya...2015 Editor: K. Mezger Keywords: Middle Archean Barberton Greenstone Belt (BGB) Iron isotope geochemistry...(DIR) a b s t r a c t The Barberton Greenstone Belt (BGB), South Africa, consists of volcano-sedimentary...Fig Tree, and Moodies. After deposition, the Barberton Greenstone Belt underwent relatively low-grade...year sedimentary rocks of the Barberton Greenstone Belt (BGB) in South Africa and East Pilbara in Western |  | | Journal (article/letter/editorial) | | VOL. 56, MAY_JUNE, 1971 MINERALS FROM BARBERTON, SOUTH AFRICA: IV. REEVESITE, A MEMBER OF THE GROUP HYDROTALCITE...eNn E. A. Vrr.1ooN,I{ational Institute Jor g, South Africa. M etallurgy, J ohannesbur Aesrnlct Reevesite...frorn the Bon Accord area in the Barberton Mountain Land, South Africa. The mineral occurs in druses as...of the Scotia Talc Mine in the Barberton Mountain Land, South Africa, led to the discovery of a series...quartz crystals, thin fiIms of opaline silica, and goethite, the last named usually not more than a mere brown |  | | Journal (article/letter/editorial) | | com/locate/gca Texture-specific Si isotope variations in Barberton Greenstone Belt cherts record low temperature...from the Onverwacht Group of the Barberton Greenstone Belt, South Africa. This geochemical data is then...successions, such as the Barberton Greenstone Belt (3.5–3.2 Ga), South Africa, contain abundant sedimentary...of evidence that chert d18O in post-3.445 Ga Barberton cherts was set during burial and not affected by...relationships reveal that early Archean cherts in the Barberton belt contain an array of micro-scale textures |  | De Ronde, Cornel E.J., Channer, Dominic M.deR., Faure, Kevin, Bray, Colin J., Spooner, Edward T.C. (1997) Fluid chemistry of Archean seafloor hydrothermal vents: Implications for the composition of circa 3.2 Ga seawater. Geochimica et Cosmochimica Acta, 61 (19) 4025-4042 doi:10.1016/s0016-7037(97)00205-6 | Journal (article/letter/editorial) | | been identified and mapped in the Barberton greenstone belt, South Africa and are known as the Ironstone...K (18.9), Mg (50.9), Ca (232), and Sr (4.52). Barberton seawater components are commonly within an order...Sulfate concentrations are minimum estimates for Barberton seawater. Fluid inclusion samples containing the...dominated by the hydrothermal endmember fluid. Barberton ambient seawater is considered to have been an...are consistent with the chemistry of 3.23 Ga Barberton seawater being buffered by the mantle. Copyright |  | Bonnand, P., Lalonde, S.V., Boyet, M., Heubeck, C., Homann, M., Nonnotte, P., Foster, I., Konhauser, K.O., Köhler, I. (2020) Post-depositional REE mobility in a Paleoarchean banded iron formation revealed by La-Ce geochronology: A cautionary tale for signals of ancient oxygenation. Earth and Planetary Science Letters, 547. 116452pp. doi:10.1016/j.epsl.2020.116452 | Journal (article/letter/editorial) | | of the 3.22 Ga Moodies Group, Barberton Greenstone Belt (South Africa), which are interbedded with near-shore...100 Ma, possibly upon surface exposure of the Barberton Greenstone Belt to wetter conditions during the...and stratigraphy of Moodies Group BIF in the Barberton Greenstone Belt. (A) Map showing sampling locations...by Hayashi et al. (2004) on samples from the Barberton Greenstone Belt (BGB) show that the presence of...phyllosilicates (likely stilpnomelane and chamosite), goethite, and rare ankerite (see Table S2 for X-ray diffraction |  | | Report (issue) | | 18.994(6) X-ray Powder Pattern: Bon Accord, South Africa. 9.40 (100), 3.12 (28), 2.503 (23), 4.57 (16)...Total 100.33 Chemistry: 2+ (1) Bon Accord, South Africa; corresponds to (Ni 2: 12 Mg 0:80 Fe3+ 0:10Co...trevorite, nimite, violarite, millerite, reevesite, goethite, \opal." Distribution: Found three km west of...talc mine, Bon Accord area, Barberton, Transvaal, South Africa. Name: Africa. For Johannes Willemse, Professor...Professor of Geology, University of Pretoria, Pretoria, South Type Material: National Museum of Natural History |  | | Journal (article/letter/editorial) | | JTTLY_AUGUST, 1969 NICKEL MINERALS FROM BARBERTON, SOUTII AFRICA: I. FERROAN TREVORITE S. A. nB W.L.Ll...Scotia Tale Mine in the Bon Accord area, Barberton, South Africa, was reinvestigated, mainly to ascertain...associatedsilicate minerals that are reported to be nepouite (South Africa GeologicalSurvey, 1959).During this investigation...first reported by Trevor (1920)' According to the South African GeologicalSurvey (1959), the ore constitutes...mildly stained by iron oxide and small amounts of goethite are present. Mineralogy oJ the Treaorite.The general |  | | Report (issue) | | 14.302(3) X-ray Powder Pattern: Bon Accord, South Africa. 7.10 (100), 3.55 (45), 14.2 (25), 4.74 (16)...Total 100.80 Chemistry: 2+ (1) Bon Accord, South Africa; corresponds to (Ni2:62 Mg 1:66 Al0:98 Fe3+...reevesite, goethite. Distribution: From three km west of the Scotia talc mine, Bon Accord area, Barberton, Transvaal...Transvaal, South Africa. Name: An acronym for the National Institute of Metallurgy of South Africa. Type...minerals from Barberton. II. Nimite, a nickelian chlorite. Nat. Inst. Met. (South Africa) Res. Rep. 344 |  | van Zuilen, Mark A., Chaussidon, Marc, Rollion-Bard, Claire, Marty, Bernard (2007) Carbonaceous cherts of the Barberton Greenstone Belt, South Africa: Isotopic, chemical and structural characteristics of individual microstructures. Geochimica et Cosmochimica Acta, 71 (3) 655-669 doi:10.1016/j.gca.2006.09.029 | Journal (article/letter/editorial) | | com/locate/gca Carbonaceous cherts of the Barberton Greenstone Belt, South Africa: Isotopic, chemical and structural...deposits of the 3.4–3.2 Ga old Barberton Greenstone Belt (BGB), South Africa, has experienced low grade regional...regional metamorphism and variable degrees of local hydrothermal alteration. Here a detailed study is...altered cherts of the 3.4–3.2 Ga old Barberton Greenstone Belt, South Africa. This study highlights the complexity...samples from the Onverwacht Group of the BGB, South Africa, are described here in detail. The Onverwacht |  | | Journal (article/letter/editorial) | | Stellenbosch, Private Bag X1, Matieland 7602, South Africa b Walkabout Resources Ltd, PO Box 263, West...Region, 50 km east of Lake Malawi and about 125 km south from the town of Njombe (Fig. 1). The APGD lies...transect of one of the Au nuggets. 4. Results 4.1 Local geology and geomorphology The study area encompasses...magnetite, pyrite, chalcopyrite, bornite, covellite, goethite and gold mineralization (Fig. 3c-d). Sulphides...distinct gossanous material (Fig. 3e-f) with abundant goethite (Fe-oxide networks) and pseudomorphic covellite |  | | Journal (article/letter/editorial) | | pages 733-735, 1973 Nickel Mineralsfrom Barberton,South Africa: A NickelOlivine Vl. Liebenbergite, SvsneNoA...Metallurgy, I Yale Road.,Milner Park, I ohannesburg,South Alrica Lnwrs C. ClI.x Il. S. GeologicalSuruey,345...Director-General of the National Institute for Metallurgy, South Africa. mission on New Minerals and Mineral Names...trevorite deposit at Bon Accord in the Barberton Mountain Land, South Africa, led to the discovery of two peculiar...ritehave been dereevesite-millerite-violarite-goethite scribed in earlier papers in this series (de Waal |  | | Report (issue) | | 87 Total 99.91 96.17 100.00 (1) Bon Accord, South Africa. (2) Mt. Clifford, Australia; by electron microprobe...quartzite and an ultramafic intrusive (Bon Accord, South Africa); below a nickel sulfide deposit in gabbro intruding...violarite, millerite, reevesite, goethite (Bon Accord, South Africa); nickel, heazlewoodite, millerite...Scotia talc mine, Bon Accord area, Barberton, Transvaal, South Africa. In the Mt. Clifford nickel deposit...Welsh–South African geologist, Mining Inspector for the Pretoria district, Transvaal, South Africa. Type |  | | Journal (article/letter/editorial) | | JANUARY-FEBRUARY, 1970 NICKEL MINERALS FROM BARBERTON, SOUTH AFRICA: III. WILLEMSEITE, A NICKEL-RICH TALC S...two miles west of the Scotia Talc Mine in the Barberton Mountain Land, Transvaal. The nickeliferous rock...the Scotia Talc Mine, in the Bon Accord area, Barberton, Transvaal. In addition to violarite and millerite...Trevor (Partridge, 1944) in 1920. According to the South African Geological Survey (1959), the ore constitutes...mildlv stained bv iron oxide, and small amounts of goethite are present. Expnntwlqt.n r- Mergoos The experimental |  | | Journal (article/letter/editorial) | | in Archean Tholeiites from the Barberton Greenstone Belt, South Africa Kent C. Condie 1, M.J. Viljoen...Randfontein,South Africa 3 Nuclear PhysicsResearch Unit, Universityof Witwatersrand,Johannesburg, South Africa...epidotized, and carbonated tholeiite flows from the Barberton greenstone belt. Au, As, Sb, Sr, Fe +3, Ca, Br...carbonization in tholeiites from the Barberton greenstone belt in South Africa. Although Archean 76 K.C. Condie...post-metamorphic) minerals such as carbonate. The Barberton belt was selected for this investigation in that |  | de Wit, Maarten, Furnes, Harald, MacLennan, Scott, Doucouré, Moctar, Schoene, Blair, Weckmann, Ute, Martinez, Uma, Bowring, Sam (2018) Paleoarchean bedrock lithologies across the Makhonjwa Mountains of South Africa and Swaziland linked to geochemical, magnetic and tectonic data reveal early plate tectonic genes flanking subduction margins. Geoscience Frontiers, 9 (3) 603-665 doi:10.1016/j.gsf.2017.10.005 | Journal (article/letter/editorial) | | lithologies across the Makhonjwa Mountains of South Africa and Swaziland linked to geochemical, magnetic...Uma Martinez a, f, Sam Bowring g a AEON-ESSRI (Africa Earth Observatory Network-Earth Stewardship Science... Nelson Mandela University, Port Elizabeth, South Africa Department of Earth Science & Centre for Geobiology... Nelson Mandela University, Port Elizabeth, South Africa e Department Geophysics, GFZ - German Research...14473 Potsdam, Germany f GISCAPETOWN, Cape Town, South Africa g Earth, Atmosphere and Planetary Sciences, |  | | Journal (article/letter/editorial) | | the Lr-V deposit of Mounana, Haut-Ogoue, Gabon, Africa (the tlpe locality for francevillite, chervitite... vanuralite, and curienite), associated rvith goethite, francevillite, and curienite. NLW MINERAL NAMES...Nickel minerals from Barberton. rr. Nimite, a nickelian chlorite. Nat. Inst. Met. (South Africo) Res. Rep...about two miles west of the Scotia talc miner, Barberton Mountain Land, Transvaal Associated minerals include...milIerite, willemseite, and secondary reevesite and goethite. The name is for the abbreviation of the National |
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