 | | Journal (article/letter/editorial) | | daubréelite, ferrorhodsite, fletcherite, florensovite, greigite, indite, kalininite, linnaeite, malanite, polydymite...cube-octahedral crystal with calcite from Kambove District, Katanga Copper Crescent, Katanga, Democratic...natural chromites from the Bushveld Complex, South Africa, are reported by Lenaz et al. (2007). Cochromite—CoCr2O4...described from the Bon Accord nickel deposit, Barberton, South Africa (De Waal 1978), in a trevorite-liebenbergerite-bunsenite...Hill (Brukunga quarry), Nairne, Mt. Lofty Ranges, South Australia, Australia, by Graham (1978). It occurs |  | | Journal (article/letter/editorial) | | in temperature. Thermal ground lying above the local water table may impose soil temperatures on root...character of the local underlying geothermal system, surface topography relative to the local water table...mean that plant preservation seldom occurs unless local water chemistry undergoes a rapid change to alkali-chloride...vent pools of Rhynie hot springs would favour a local saltmarsh ecosystem. Sinter deposition entombing...waters were responsible for killing and preserving local vegetation. Taphonomic studies of microbes indicate |  | | Journal (article/letter/editorial) | | . . . . . . . . . . . . . . The 3.26–3.24 Ga Barberton asteroid impact cluster: Tests of tectonic and... . . . . . Magnetite dissolution, diachronous greigite formation, and secondary magnetizations from pyrite...High-resolution paleoceanographic evidence from a north–south transect along the eastern Nordic Seas B. Risebrobakken...lavas and hyaloclastites from the Barberton Greenstone Belt, South Africa N.R. Banerjee, H. Furnes, K. Muehlenbachs...earthquake location and seismic structure in the Kanto district, central Japan Zhi Wang and Dapeng Zhao . . . |  | | Journal (article/letter/editorial) | | in the ;2.5 Ga Mt. McRae Shale, the Hamersley District, Western Australia TAKESHI KAKEGAWA,1,2,* HAJIME...old shales and cherts from the Barberton Greenstone Belt, South Africa. On the basis of these data, they...other intermediates, such as polysulfides, to form greigite (Fe3S4; Skinner et al., 1964; Goldhaber and Kaplan...Wilkin and Barnes, 1996). The mackinawite and greigite are highly unstable, and the transition to FeS2...1977). The solubility products of mackinawite and greigite are higher than that of pyrite (Berner, 1967; |  | | Report (issue) | | famous Mesoarchean Witwatersrand Supergroup in South Africa that contains Earth’s largest gold-uranium deposits...signatures in sulfur and carbon isotopes from Isua, Barberton, Wabigoon (Steep Rock), and Belingwe Greenstone...glacier-associated sediments of the Neoproterozoic of south China: Oceanic anoxia or sulfate limitation? .....and “ready-made” clusters corresponding to the greigite (Fe5NiS8) structure. Such clusters were precursors...until the early Proterozoic. Keywords: CODH/ACS, greigite, origin of life, oxygenic photosynthesis, ranciéite |  | | Journal (article/letter/editorial) | | precipitation rates and the concurrent formation of a greigite (Fe3S4) phase is modulated by the amount of initially...δ56FeFeSx, where FeSx includes FeS, Fe(II)aq, and greigite) of -0.51 ± 0.22‰ throughout the experiments irrespective...irrespective of precipitation pathways and greigite formation. Early-stage precipitation is associated...variables (e.g., oxygen variation at global or local spatial scales) or microbial iron reduction (e.g... with occasional formation of an intermediate greigite (Fe3S4) phase (Schoonen and Barnes, 1991; Wang |  | Cavalazzi, B., Agangi, A., Barbieri, R., Franchi, F., Gasparotto, G. (2014) The formation of low-temperature sedimentary pyrite and its relationship with biologically-induced processes. Geology of Ore Deposits, 56 (5) 395-408 doi:10.1134/s107570151405002x | Journal (article/letter/editorial) | | University of Johannesburg 2006, Johannesburg, South Africa b Dipartimento di Scienze Biologiche, Geologiche...Amorphous FeS less stable Fe(II)S amorphous form Greigite metastable FeII/FeIII sulfide Mackinawite metal...Late Carboniferous deposits, Main Karoo Basin, South Africa. The images show individual wood cells and circular...Department of Geology, University of Johannesburg, South Africa). the most abundant iron sulfide in terrestrial...pyrite presum ably suggests mackinawite and greigite sulfides as pre cursor minerals, which accommodate |  | | Journal (article/letter/editorial) | | lavas and hyaloclastites from the Barberton Greenstone Belt, South Africa Barazangi, M., see Gomez, F. Barruol...Glikson, A. and Vickers, J., The 3.26–3.24 Ga Barberton asteroid impact cluster: Tests of tectonic and...High-resolution paleoceanographic evidence from a north–south transect along the eastern Nordic Seas 241 (2006)...Roberts, A.P., Magnetite dissolution, diachronous greigite formation, and secondary magnetizations from pyrite...earthquake location and seismic structure in the Kanto district, central Japan Watkeys, M.K., see Jourdan, F. |  | Busigny, Vincent, Marin-Carbonne, Johanna, Muller, Elodie, Cartigny, Pierre, Rollion-Bard, Claire, Assayag, Nelly, Philippot, Pascal (2017) Iron and sulfur isotope constraints on redox conditions associated with the 3.2 Ga barite deposits of the Mapepe Formation (Barberton Greenstone Belt, South Africa) Geochimica et Cosmochimica Acta, 210. 247-266 doi:10.1016/j.gca.2017.05.002 | Journal (article/letter/editorial) | | deposits of the Mapepe Formation (Barberton Greenstone Belt, South Africa) Vincent Busigny, Johanna Marin-Carbonne...deposits of the Mapepe Formation (Barberton Greenstone Belt, South Africa), Geochimica et Cosmochimica Acta...deposits of the Mapepe Formation 3 (Barberton Greenstone Belt, South Africa) 4 5 6 Vincent Busigny1,*, Johanna...(Kaapvaal craton, South Africa), recovered from the drill-core BBDP2 of the 37 Barberton Barite Drilling...data could therefore have been 86 affected by local effects, unrelated to atmospheric “whiffs” of oxygen |  | | Journal (article/letter/editorial) | | precipitated, disordered mackinawite, Fe+&, and greigite, Fe&, in solutions containing aqueous H2S, HS...pyritization rates were the fastest. Although greigite formation occurred in experiments that produced...produced framboids, not all experiments that produced greigite led to framboid formation. The formation of pyrite...(i.e.. disordered mackinawite, mackinawite, or greigite) and ‘S”‘ represents a source of sulfur. In support...profound effects on the results of the experiments. Greigite, Fe&, was prepared following the general method |  | | Journal (article/letter/editorial) | | SUBJECTINDEX TO VOLUME 55 Africa Mineralogy Molybdenite (Frondel,JudithW., er a/.) I l-12 1857 Aluminum...Mackinawite South Africa. Transvaal. Vlakfontein (Clark. Alan H.) 9-10 1802 South Africa. Transvaal...Reservation, Czechoslovakia, Bohemia, Trebenice, South Africa, Kimberley, pyrope 7-8 1374 (Reid, Arch M....Major-element analyses Pegmatite Composition, South Dakota, Kevstone ( N o r t o n , J a m e sJ . )...(Morse, S. A.) 1-2 303 Laterites Composition New South Wales, Sydney duricrusts, maghemite quarry (Leelanandam |  | | Journal (article/letter/editorial) | | Rhodesiangold deposits have been recognized by local geologistsas many parts of the world such as Australia...from the Canada, India, and central and southern Africa. cross-cutting vein-type lode deposits. Furthermore...Investigationsin the Barbertongreenstonebelt, Group). South Africa (Viljoen and Viljoen, 1969a, 1970), Similar...suggestingaffinities to the basaltickomatiitesof the Barberton greenstonebelt (Viljoen and Viljoen, 1969a). ...and stilpnomelane Sulfide Pyrite, marcasite, greigite, melnikovite Predominant metamorphic iron minerals |  | | Journal (article/letter/editorial) | | (Fe9Ss) ~ greigite (Fe3S4) ~ pyrite (FeS2). The formation and growth of precursor ferrimagnetic greigite is...Pavlovic (1979) have identified framboids composed of greigite in recent lacustrine sediments, and Roberts and...apparently containing residual greigite cores, implying that greigite is a precursor phase in the development... Several experimental studies have shown that greigite forms by a redox-dependent process requiring dissolved...specifically address the depth distribution of greigite, this mineral is present dominantly near the redox-interface |  | | Book | | phosphorite of the Doushantuo Formation at Weng’an in South China. Photograph by Shuahai Xiao. Photo at the...Disentangling the Microbial Fossil Record in the Barberton Greenstone Belt: A Cautionary Tale [Walsh, M.M...Israel; Italy; Japan; Mexico; Norway; Romania; South Africa; Spain; Sweden, United Kingdom; the United States...research at the University of Stellenbosch, R. South Africa; at the Center for the Studies of the Evolution...and fieldwork around the world, from Australia to South America, Southeast Asia, India, and China. He currently |  | | 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) | | review] De lVaal, S. A. Nickel minerals from Barberton, South Africa; V, Trevorite, redescribed De Waard, D...Quartz Creek Silhydrite,Trinity County,BonanzaKing District Quadrangle (Rosenberg, 3-4 571 P. E.) (Gude,Arthur...(Brindley, G. W.) l-2 334 Great Lakes Mineralogy Greigite, sediments, Lake Superior (Dell, C. I.) 7-8 1303...) 5-6 995 Dawsonite, petrography, genesis, New South Wales (Loughnan,F, C., et al.) 9-t0 t437 Huntite...Frameworksilicates,zeolitegroup Analcite, petrography,New South Wales 9-10 143'l (Loughnan,F. C., et al) Erionite | | | 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 |  | | Journal (article/letter/editorial) | | American Association of Petroleum Geologists, 1444 South Boulder Avenue, Tulsa, OK 74119-3604 AMERICAN JOURNAL...Street, Suite 308, Tulsa, OK 74135-5814 JOURNAL OF SOUTH AMERICAN EARTH SCIENCES Elsevier Science, Customer...Malden, MA 02148 SOUTH AFRICAN JOURNAL OF GEOLOGY Geological Society of South Africa, P.O. Box 61809,... Marshalltown 2107, Johannesburg, South Africa TECTONICS American Geophysical Union, 2000 Florida Avenue...microstructure, composition, and morphology of greigite nanocrystals in magnetotactic bacteria from electron |  | | Journal (article/letter/editorial) | | i d l e y The petrochernistry of a unique lava, South Atfantic cordierite-bearing new nineral 11 986...d e W a a l Liebenbergite, a nickel olivine South Africa Callaghanite, calcite-muscovite-quart assenblages...at high tenperatures at high ternperatures from South Dakota at high teilperatures 636 435 Pentagonite...CZAMANSKE, GERALD Sulfides in eclogite nodules fron South Africa DAL NEGRO,ALBERTO with E. Cannillo and G. Rossi...in eclogite nodules fron a kimberlite pipe, South Africa, with 195 stoichiometry corrurents on violarite |  | Hazen, R. M., Papineau, D., Bleeker, W., Downs, R. T., Ferry, J. M., McCoy, T. J., Sverjensky, D. A., Yang, H. (2008) Mineral evolution. American Mineralogist, 93 (11) 1693-1720 doi:10.2138/am.2008.2955 | Journal (article/letter/editorial) | | EvOLUTION 3200 ±3230 Fig Tree & Moodies Groups, Barberton greenstone belt ±3460 3465 ±3500 ±3530 3600 ...deposits (ca. 3490 Ma, Pilbara & Barberton) Onverwacht Group, Barberton greenstone belt Oldest microfossils...3.25 Ga Fig Tree Group of the Barberton Greenstone Belt in South Africa. The mineralogy of BIFs can be...(FeS2), siderite (FeCO3), and uraninite (UO2) in the South African Witwatersrand and Canadian Blind River Archean...known barite deposits (3.5 to 3.4 Ga) are from South Africa, Western Australia, and India (Strauss 2003; |  | | Journal (article/letter/editorial) | | heavy-mineral deposition in the eastern Eucla Basin, South Australia—B. Hou, L.A. Frakes, N.F. Alley, and P...Heithersay Diamonds of multiple origins from New South Wales: Further data and discussion—F.L. Sutherland...Taiwan: Influence of geochemical environment on greigite and pyrrhotite formation—Shuh-Ji Kao, Chorng-Shern...2003 3 He/4He ratios in well gases in the Kinki district, SW Japan: Surface appearance of slab-derived...compositions in polymict peridotites, Kaapvaal craton, South Africa—H.-F. Zhang, M.A. Menzies, and D. Mattey A comparison |  | | Book | | Association. In the end, they approved the name greigite since the term melnikovite had been used variably...found in some Russian literature as a synonym for greigite. Buchanan (1890, p. 29) wrote: When a mud containing...iron sulfide minerals, such as mackinawite and greigite, is generally a mistake as discussed in Chapters...or FeS2 with sulfur (cf. Allen et al., 1912), greigite, or a result of incomplete analyses. However,...minerals survive over long periods as long as their local environments do not become undersaturated with respect |  | | Book (edition) | | Meta/lurgical and Mineralogical Society o/ South Africa Journal of Chemical Phy ics Journal cif the...and Proceedings of the Royal Socief) 1 of Ne,v South Wales JPSJ Journal of rhe Physical Society of...Cand CSPG Pennskiye gubemskiye wdomo.sti (Perm district ga=elle) Pl,ilosopl,ical Maga=ine Periodico de...Artrocitc, Ivigtul cryolitc deposit. Ivittuut municipality. southwest Wi tgreenl Greenland. 73. 1492, ZK...2iOH)~. Lric.,3 km south of thc mouth of Akatorc Crcek, castcm Otago, Dunedin, South Island, New Zealand |  | | Journal (article/letter/editorial) | | biogeochemical processes, which are independent of the local abundance of Mo. Our calculations indicate that...such as mackinawite (FeS; Helz et al., 2004) and greigite (collectively known as acid volatile sulfide, or...and/or Fe-sulfides (including FeS, mackinawite, greigite, pyrite; Erickson and Helz, 2000). However, approximately...The high Mo enrichment was not the result of the local or regional abundance in the surrounding sediments...Early Archean Onverwacht Group, Barberton Mountain Land, South Africa. Precambrian Res. 54, 271–293. Walsh |  | | Journal (article/letter/editorial) | | Witwatersrand in South Africa, the Blind River effect of upward-finingcycleswhich usuallystart district(Elliot...heavy mineral grainsare characterizedby and ates(Barberton greenstone belt) ca.3.'25Ga (Saager, roundedshapes...gin fromultramaficandmaficrocksof the Archcan greigite)fromthe river waters. belts. The •a4Svaluesfor...followingsection,we assume, unless maekinawite,greigite),aswell asuncertaintiesin the otherwisestated...and gold-bearingTarkwaiansedimentsin Ghana,West Africa: Precambrian Research,v. 67, p. 89-107. Eales,H |
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