 | | Journal (article/letter/editorial) | | Group, cropping out extensively in the Hartland region, as well as in multiple inliers from Amsterdam...central KwaZulu-Natal, with further exposures in Eswatini. Subeconomic gold and uranium mineralisation occur...Skurwerant Formation (Amsterdam region) and Mkaya Formation (Magudu region). Introduction The Pongola Supergroup...locus of sedimentation occurs within the Hartland region east of Paulpietersburg, with outcrops to the north...Amsterdam in the Mpumalanga Province, through southern Eswatini (Swaziland), to the White Mfolozi Inlier east |  | | Book | | systematically present the geology of each country, region and continent on Earth. Each book aims to provide...Nhleko Geological Survey and Mines Department, Mbabane, Swaziland Ancient Gneiss Complex Barberton...gneissic and granitoid terrain to the south in the region around the town of Piet Retief (now Mkhondo; Fig...phases of some plutons such as Sinceni and in the Mbabane area carry cassiterite, which has been worked from...dated Mineral phase(s) Age (Ma) Referencea Mbabane Granite Zircon 2691 ± 4 (a) Granite Hornblende |  | | Journal (article/letter/editorial) | | (Figure 2), forming a northeast-striking hilly region, which has the typical geomorphological expression...magnetite, hemo-ilmenite, hematite, limonite and pyrite. Locally, minor quartz-microcline pegmatites crosscut...scapoliteand pyroxene-bearing amphibolitic units in this region. The amphibolites commonly occur as mesobands,...sulfides has been observed. They comprise chiefly pyrite, but substantial amounts of chalcopyrite and pyrrhotite...proceedings of the 16th Colloquium On African Geology, Mbabane, Swaziland, 19-21. Coolen, J.J.M.M.M., Priem, H |  | Jaguin, J., Poujol, M., Boulvais, P., Robb, L. J., Paquette, J. L. (2012) Metallogeny of precious and base metal mineralization in the Murchison Greenstone Belt, South Africa: indications from U–Pb and Pb–Pb geochronology. Mineralium Deposita, 47 (7) 739-747 doi:10.1007/s00126-012-0422-7 | Journal (article/letter/editorial) | | and 2,970±7 Ma, respectively (zircon U–Pb), while pyrite associated with gold mineralization yielded a Pb–...and Pb–Pb isotopic determinations on zircon and pyrite, respectively; and (2) assess the role that granitoids...et al. 2009). The final magmatic event in this region is represented by the Mashishimale pluton, emplaced...form of stibnite and berthierite associated with pyrite and arsenopyrite, mainly in quartz–carbonate veins...mineralization associated with arsenopyrite and pyrite in ferruginous cherts and banded iron formation; |  | | Journal (article/letter/editorial) | | froillKu•cuandGedikoglu, 1989)andthe G6kgeovacik region (modified fromGraciansky, 1968). TheageoftheLateCretaceous...Chlorite, Grey shale .2'2• Chlorite, illite• pyrite,colcite,quortz Oxidised massive ore Silicate-oxide-carbonate...bixbyite, andhasa distinctive mineralogy thatincludes pyrite,lepi- andlepidoeroeite; the coreof the pisolites...aweakmicrostratificatolepidoeroeite andhematite. Pyrite hasanearly stoiehiomettionthatmayrepresent original...0.14 0.1 0.12 0.31 5.11 0.12 Pyrite-rich cherryshale Pyrite 44.0 Hematite Kutnohorite 58.6 0 |  | | Journal (article/letter/editorial) | | quartz-tourmaline- arsenopyrite-sideritechlorite-pyrite±pyrrhotite. Typical modal abundances from work...Percentage1 Arsenopyrite 5 to 35 Pyrrhotite 0.1 to 5 Pyrite 0.1 to 2.8 Chalcopyrite Trace to 1.3 Rutile 0.1... These minerals predate the crystallisation of pyrite that occurs as massive concordant lenses and blebs...the later working in the tourmalinite. traces of pyrite, occasional coarse scheelite crystals and minor...large, often euhedral crystals associated with pyrite overgrowing the mylonitic texture, and 3) as fine |  | | Journal (article/letter/editorial) | | approximatelatitude33o-35ø N. Liebenbergstatesthat in this region"the alluvial transportof uraniniteextendsup to...blackoxidesof uraniumand vanadium,togetherwith pyrite, galena,chalcopyriteand wulfenite (but with no...Hunter, D. R., 1961, The geologyof Swaziland: Mbabane,104 pp. Geology and MineralDeposits of the Pachuca-Real |  | | Journal (article/letter/editorial) | | the Motuoshala deposit, Xinjiang Uygur Autonomous Region is associated with chert and jasperite ŽFan and...hausmannite, manganosite, bementite, carrollite, pyrite, Pb–Zn sulfides Rhodochrosite, Ca rhodochrosite...Mn calcite Pyrolusite, psilomelane, manganite, pyrite, galena, sphalerite, argentite, chlorargyrite ...ReÕiews 15 (1999) 1–13 Guangxi Zhuang Autonomous Region and can be divided into oxidized, leached and reworked...metallogenic regions are recognized. Ž1. The Yanliao region is located in a rift belt on the northern margin |  | | Journal (issue) | | Brunei. The difficulties of communication in this region are very great, for in the combined territories...building has resulted from the wealth flowing into the region from the rapid expansion of the oil industry, the...water transport; it can thus supply the surrounding region, including the Rajang estuary. It is estimated...University, had made a special examination of the region with the object of finding stone supplies. In general...often provide the first reliable guidance to a region. (In many Colonial territories, the geologists |  | Taylor, Jeanne, Stevens, Gary, Armstrong, Richard, Kisters, Alexander F.M. (2010) Granulite facies anatexis in the Ancient Gneiss Complex, Swaziland, at 2.73Ga: Mid-crustal metamorphic evidence for mantle heating of the Kaapvaal craton during Ventersdorp magmatism. Precambrian Research, 177 (1) 88-102 doi:10.1016/j.precamres.2009.11.005 | Journal (article/letter/editorial) | | / Precambrian Research 177 (2010) 88–102 con, pyrite and ilmenite as accessory phases. Garnet aggregates...16th International Colloquium on African Geology, Mbabane, Swaziland, pp. 201–206. Marsh, J.S., Bowen, M...International Colloquium on African Geology, vol. 2, Mbabane, Swaziland, pp. 294–296. Richardson, S.H., Shirey...1993. Late-stage granite plutons in the Barberton region and Swaziland: an update. In: Ext. Abstr.16th International...International Colloquium on African Geology, Mbabane, Swaziland, pp. 299–301. Sandiford, M., Hand, M |  | | Journal (article/letter/editorial) | | colour-banded, and contains finely disseminated pyrite and other sulfides. Some coarsely disseminated...contrast to the other deposits it does not contain pyrite and it is intensely folded on a small scale. The...of detrital baryte grains together with detrital pyrite, chromite, zircon, magnetite,ilmentite, molybdenite...stringers frequently enrichment of microcrystalline pyrite was observed, in a few instances also some fine-grained...for five samples with a range of + 4.4--+ 6.1%0. Pyrite separates gave values of -3.7 and -6.3o/00. In |  | | Report (issue) | | CASS!'l'E�tf R Copper sulphides, arsenopyrite, pyrite, and ores of bismuth, uranium and iron, are also...was for centuries the most important tin-mining region in the world. The industry dates back to pre-historic...000,000 tons, a figure only exceeded by one other region. The i\1alay Peninsula, including Banka and Billiton...amount of arseno pyrite. (b) ' Blue peach,' with cassiterite, and some arseno pyrite. TV. (a) Fluorspar...conjunction with the geological structure of the region, lead to the important observation that the more |  | | Journal (issue) | | Kingdom of eSwatini (previously known as Swaziland). The superb Archaean geology found in this region continues...numerous publications that still emanate from the region. This bibliography attempts to record most reference...geology, mineral deposits and mining in the Barberton region covering the period 1875 to June 1976. The second...that continues unabated in the Barberton-Swaziland region makes it difficult to keep abreast of all the findings...and HOFMANN, A., (2015). Trace element mapping of pyrite from Archean gold deposits – a comparison between |  | | Journal (issue) | | in the Singo deposits, namely: fluorite, mica, pyrite, haematite, limonite, beryl and scheelite. A notable...minerals-mainly tourmaline and zircon, with very occasional pyrite-were also present. All fractions were weighed after... in the Lipago Mountains, and in the Kete,vaka region. i\. survey of Lake atron was carried out \i\fith...occupied by charnocl{itic rocl{s. In the Ketewaka region and betvveen the Ketewaka and Luano valleys, biotitegneisses...has been done on the occurrence of barytes in Mbabane district, because of lack of agreement betwee11 |  | | Journal (article/letter/editorial) | | 1991). This basin received detritus from a upland region to the northwest. Volcanic rocks at the base of...of some 330 km. The kinematic pattern for this region is dominated by the SW directed emplacement of...role in the Early Proterozoic evolution of the region. Potgieter (1992) recognised a series of southward...plate tectonic r~gime have been operative in this region since the MidArchaean. Following terrane amalgamation... Extended Abstract Volume, Geological Survey, Mbabane, pp. 54 56 Brandl, G., Reimold, W.U. (1990) The |  | | Journal (article/letter/editorial) | | JB = = = = = = / GABORONE KIMBERLEY KURUllAN MBABANE MASEIRU JOHANNESBURG PT = PRETORIA PB = P I E...area south of the Bushveld region and east of the Griqualand West region is overlain by the Phanerozoic...Economically viable, auriferous Witwatersrand-type pyrite- and quartz-pebble conglomerates occur stratigraphically...the Olifantshoek Sequence in the Griqualand West region (Table 1 ) contain a basal ferruginous conglomerate...the Sibasa Basalt Formation of SI in the Bushveld region are pink (Barker, 1979; Brandl, 1981, 1986) and |  | | Journal (article/letter/editorial) | | 165 °C. The occurrence of siderite together with pyrite suggests that the diagenetic processes took place...i'_ . ...""_ i ) X /'C.._"5"-X ~ x ~x/./~ x Mbabane Fig. 1. Locality map showing position of the Barberton...tourmaline, apatite, chromite, and chalcopyrite. Pyrite is a notable constituent of diagenetic origin and...witnessed by the frequent occurrence of diagenetic pyrite. Nevertheless, some oxygen could have been formed...X-ray and chemical data, the Sheba shales contain pyrite together with siderite. This allows the approximate |  | | Book (edition) | | minerals crystallizing in these forms are garnet, pyrite and diamond. C Orthorhombic System. The matchbox-shaped...occur there has been in addition a sinking of the region due to deep earth disturbances and the depressions...recently. The gold here was closely associated with pyrite and not found in the quartz host rock. In the area...iron oxides 86 Limonite has replaced the original pyrite cubes in sandstone, Karoo 87 The typical brown...In Swaziland, 3 km from Oshoek and 20 km from Mbabane, is the Ngwenya Mine which has been in operation |  | | Report (chapter) | | that the iron did not precipitate dominantly as pyrite under the reducing conditions then prevalent in...iron became immobile in adjacent anoxic basins as pyrite thus ensuring the fractionation of manganese from...the ocean would then have been precipitated as pyrite and the content of the remaining ferrous ion in...with the resulting ability to precipitate iron as pyrite under reducing conditions is therefore seen as...trapped in large quantities in the sediment as pyrite. This circumstance meant that manganese and iron |  | | Journal (issue) | | demonstrate the continuity of the Karroo strata in the region north of Serowe and Rakops, east of the estimated...map. It is clear that the northern part of this region joins up with the Livingstone-Wankie area of Rhodesia...Waterberg Sandstone, recognised by du Toit in the region between Toteng and Ghanzi, from the associated...section between Palla Road and Mamabulaa This is the region here referred to as the Protectorate extension...Stormberg Lavas are strongly developed within the region here discussed, along the northern side of a major |  | Chinnasamy, Sakthi Saravanan, Uken, Ron, Reinhardt, Jürgen, Selby, David, Johnson, Spencer (2015) Pressure, temperature, and timing of mineralization of the sedimentary rock-hosted orogenic gold deposit at Klipwal, southeastern Kaapvaal Craton, South Africa. Mineralium Deposita, 50 (6) 739-766 doi:10.1007/s00126-014-0573-9 | Journal (article/letter/editorial) | | Canada epidote, feldspar, and carbonates along with pyrite, arsenopyrite, and chalcopyrite±pyrrhotite. An... In addition, we present Re–Os compositions of pyrite and arsenopyrite from the ore and report on the...within the mylonites (Fig. 7f, g) grew on rigid pyrite and arsenopyrite grains. In addition to quartz...beam diameter was set at 1 μm. For analysis of pyrite and arsenopyrite, an acceleration potential of...used. Beam currents of 200 and 20 nA were used for pyrite and arsenopyrite, respectively. The counting time |  | Argapadmi, Windeati, Toth, Eniko R., Fehr, Manuela A., Schönbächler, Maria, Heinrich, Christoph A. (2018) Silver Isotopes as a Source and Transport Tracer for Gold: A Reconnaissance Study at the Sheba and New Consort Gold Mines in the Barberton Greenstone Belt, Kaapvaal Craton, South Africa☼. Economic Geology, 113 (7) 1553-1570 doi:10.5382/econgeo.2018.4602 | Journal (article/letter/editorial) | | to tectono-metamorphic (orogenic) history of the region evolved over an extended period between 3547 and...magmatic event extended well beyond the Barberton region, as indicated by hydrothermally altered intrusions...lithosphere delamination in an extensive back-arc region (de Ronde et al., 1991; Poujol et al., 2003; Zeh...pyrrhotite + arsenopyrite ± loellingite ± chalcopyrite ± pyrite, with biotite + hornblende + fuchsite ± garnet...chlorite, cpy = chalcopyrite, po = pyrrhotite, py = pyrite, qz = quartz, trm = tremolite 1Mass of solid sample |  | | Journal (article/letter/editorial) | | with anorthosite affinity. The evolution of the region is explained b y a plate tectonic model, which...with an island-arc complex. As a consequence, the region between Tete and SW Malawi mainly comprises migmatised...emphasized by Clifford (1970). He considered the region a thermally and tectonically reactivated basement...study specifically deals with the evolution of a region adjacent to the type area for the Mozambique belt...central Malawi and the other in the Blantyre--Zomba region in the south (Fig. 2b). In both areas the prograde |  | Hein, James R, Fan, Delian, Ye, Jie, Liu, Tiebing, Yeh, Hsueh-Wen (1999) Composition and origin of Early Cambrian Tiantaishan phosphorite–Mn carbonate ores, Shaanxi Province, China. Ore Geology Reviews, 15 (1) 95-134 doi:10.1016/s0169-1368(99)00017-7 | Journal (article/letter/editorial) | | dolomite comprising the Mn mixed-carbonate section. Pyrite occurs in all rock types and alabandite ŽMnS. occurs...widely distributed. In the eastern part of that region mainly Mn deposits occur, such as the Shuijingping...93% for the Mn-II ore bed. Iron mainly occurs in pyrite. The P2 O5 content of individual samples ranges...muscovite Žsericite., and chlorite, with minor pyrite, calcite, graphite, and pyrochroite ŽTable 1.....Ca rhodochrosite, sericite, dolomite, and minor pyrite, quartz, and alabandite. 103 The phosphorite |  | | Journal (issue) | | places with black saturated layers. Claystone and pyrite nodules are common. Most of these pitch sands are...Maloney fault respectively. In addition, in the region of the Moruga road, it seems to be interrupted...be seen at Galfa Point and in the Sangre Grande region. 299 GENERAL AND ECONOMIC GEOLOGY OF TRINIDAD...sh.oals in these Ranges and also in the Naparima region. These shoals afforded favourable conditions for...pegmatites are seen, b11t are not common. Gold,pyrite, specularite,malachite, bornite, and native copper |
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