 | | Journal (article/letter/editorial) | | and other sulfides. Some coarsely disseminated sphalerite occurs in one of the deposits. In the upper part...thus be about 3350 Ma. LOWER ONVERWACHTBARYTES Londozi baryte The lowermost of the baryte deposits of...Barberton Mountain Land occurs in the valley of the Londozi River in the northwestern part of Swaziland close...The sequence as developed around the Londozi River baryte mine can be described as follows. The volcanic..." "~/ ~ ~..':.~ / / 1002~300~.OOm ~ "~"0~ LONDOZI BARYTE / / tquartz-senc,te Schists ! ton,iL |  | | Journal (article/letter/editorial) | | Swaziland (Fig. 1), as described below. 2.1. Londozi The Londozi deposit is located in the southeastern part...deposit include disseminated and layered pyrite, sphalerite and to a lesser extent chalcopyrite and galena...the barite horizon. An age of 3.55 Ga for the Londozi barite implies that this is the oldest sulfate...Hofmann (2005). Barite deposits indicated: (a) Londozi barite, 3.55 Ga Theespruit Formation, lower Onverwacht...30°39′ 39″E), 4 km south of the Stolzburg asbestos mine. Barite occurs in a narrow chert band that likely |  | Roerdink, Desiree L., Mason, Paul R.D., Whitehouse, Martin J., Brouwer, Fraukje M. (2016) Reworking of atmospheric sulfur in a Paleoarchean hydrothermal system at Londozi, Barberton Greenstone Belt, Swaziland. Precambrian Research, 280. 195-204 doi:10.1016/j.precamres.2016.05.007 | Journal (article/letter/editorial) | | sulfur in a Paleoarchean hydrothermal system at Londozi, Barberton Greenstone Belt, Swaziland Desiree L...D36S-values in a 3.52 Ga hydrothermal barite deposit at Londozi, Barberton Greenstone Belt, Swaziland. In situ...between abiotic and biological processes in the Londozi hydrothermal system complicate the interpretation...analysis of pyrite from the 3.52 Ga Paleoarchean Londozi barite deposit in the Theespruit Formation of the...involvement of older crustal material in the magma source region (Kröner et al., 2013; Kröner et al., 1996; Van |  | Agangi, Andrea, Hofmann, Axel, Eickmann, Benjamin, Marin-Carbonne, Johanna, Reddy, Steven M. (2016) An atmospheric source of S in Mesoarchaean structurally-controlled gold mineralisation of the Barberton Greenstone Belt. Precambrian Research, 285. 10-20 doi:10.1016/j.precamres.2016.09.004 | Journal (article/letter/editorial) | | igneous sources, or a combination of these (Hutti mine, India; Rogers et al., 2013; Western Australia,...responsible for the formation of deposits in a single region over a range of depths and temperatures (from <200...arsenopyrite, with minor chalcopyrite, Ni–As sulfide and sphalerite. Most gold is hosted by sulfides as ‘‘invisible”...1995). In contrast, mineralisation at New Consort mine is hosted in medium metamorphic grade rocks, and...thrust faults. This may not apply to New Consort mine, where mineralisation is hosted in medium metamorphic |  | Baumgartner, Raphael J., Caruso, Stefano, Fiorentini, Marco L., Van Kranendonk, Martin J., Martin, Laure, Jeon, Heejin, Pagès, Anais, Wacey, David (2020) Sulfidization of 3.48 billion-year-old stromatolites of the Dresser Formation, Pilbara Craton: Constraints from in-situ sulfur isotope analysis of pyrite. Chemical Geology, 538. 119488 doi:10.1016/j.chemgeo.2020.119488 | Journal (article/letter/editorial) | | non–porous, massive pyrite (white arrow). Note the sphalerite (Sp) grains layer (white line) that is arranged...barite and sulfide microinclusions (Ni–sulfide, sphalerite and galena), as well as larger in size than the...dominantly composed of pyrite (plus subordinate sphalerite and accessory millerite and galena) that is variably...bacteria from a geothermally active underground mine in Japan. Appl. Environ. Microbiol. 72, 3759–3762...sulfur in a Paleoarchean hydrothermal system at Londozi, Barberton Greenstone Belt, Swaziland. Precambrian |  | A. Marques, Ana Filipa, Roerdink, Desiree L., Baumberger, Tamara, de Ronde, Cornel E. J., Ditchburn, Robert G., Denny, Alden, Thorseth, Ingunn H., Okland, Ingeborg, Lilley, Marvin D., Whitehouse, Martin J., Pedersen, Rolf B. (2020) The Seven Sisters Hydrothermal System: First Record of Shallow Hybrid Mineralization Hosted in Mafic Volcaniclasts on the Arctic Mid-Ocean Ridge. Minerals, 10 (5) 439 doi:10.3390/min10050439 | Journal (article/letter/editorial) | | mineralization is characterized by the occurrence of sphalerite, chalcopyrite, galena, and Ag-sulfosalts (Figure...cryptocrystalline silica (Figure 5H,J). Fe-poor, translucent sphalerite grains, commonly associated with chalcopyrite...anhedral when rimming pyrite and barite. However, if sphalerite has grown into open spaces, it tends to be spherical...pyrite subhedral pyrite rimmed by chalcopyrite sphalerite (dark grey), and galena (light grains rimmed...rimmed by grains chalcopyrite (yellow), sphalerite (yellow), (dark grey), and galena (light grey) surrounded |  | | Journal (article/letter/editorial) | | Brazil (Fig. 1). It is the largest underground gold mine in the country, containing 150 t Au. As of 2015...the Nova Lima Group. The world-class Morro Velho Mine started production in 1834, and has produced more...brevity. The lithostratigraphic succession at the mine area, first defined by Vial (1980), includes volcanic...pyrite-pyrrhotite-arsenopyrite with minor chalcopyrite and sphalerite, and gold in equilibrium. Gold is also found...Cuiabá fold, contains the richest gold ore of the mine. The orebody shows a reasonably constant thickness |  | Selvaraja, Vikraman, Fiorentini, Marco. L., Jeon, Heejin, Savard, Dany D., LaFlamme, Crystal K., Guagliardo, Paul, Caruso, Stefano, Bui, Thi-Hao (2017) Evidence of local sourcing of sulfur and gold in an Archaean sediment-hosted gold deposit. Ore Geology Reviews, 89. 909-930 doi:10.1016/j.oregeorev.2017.07.021 | Journal (article/letter/editorial) | | have been outlined for the purposes of near- 148 mine exploration (Fig. 4). These local members are the...tectonic events in the 2.5 billion year history of the region (Fig. 158 4). 159 Most of the Wyloo Dome, as...detection of five ion species from the same analysis region. Secondary ion 249 images were obtained by rastering...lower Fortescue Group in the southern 777 Pilbara region, Western Australia. Aust. J. Earth Sci. 52, 403–410...sulfur in a Paleoarchean hydrothermal system at Londozi, Barberton 872 Greenstone Belt, Swaziland: Precambrian |  | | Book | | systematically present the geology of each country, region and continent on Earth. Each book aims to provide...Amphibolite-Facies Gold Deposits—The New Consort Mine . . . . . . . . . . . . . . . . . . . . . . . ...gneissic and granitoid terrain to the south in the region around the town of Piet Retief (now Mkhondo; Fig...development of the Pongola Supergroup (Central Region), South Africa. Precambr Res 224:268–286 Murphy...characteristics of late granite plutons in the Barberton Region and Swaziland with emphasis on the Dalmein Pluton–a |  | | Book | | outer regions to the terrestrial planet-forming region in the disk, the migration of giant planets has...experimental glasses are given in the legend. The shaded region represents predicted solubility of C as CO3 2...4.2, blue line) to kimberlitic (Figure 4.2, red region) in composition. The fO2 at which diamond and CO2-bearing...transition in the mixed spin state. Outside the region of the spin transition, they observed a linear...close spatial association at Earth’s surface in a mine may have similar physical characteristics and may |
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