 | | 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 |  | | Journal (article/letter/editorial) | | (Figure 2), forming a northeast-striking hilly region, which has the typical geomorphological expression...scapoliteand pyroxene-bearing amphibolitic units in this region. The amphibolites commonly occur as mesobands,...comprise chiefly pyrite, but substantial amounts of chalcopyrite and pyrrhotite with intergrowths of millerite...proceedings of the 16th Colloquium On African Geology, Mbabane, Swaziland, 19-21. Coolen, J.J.M.M.M., Priem, H...and Mesozoic sedimentation in the Rukwa - Tukuyu Region, Tanzania. Journal Of African Earth Science, 11 |  | | 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 (issue) | | localities tourmaline., beryl, damourite, fluorspar, chalcopyrite, molybdenite and certain clay minerals have...occurrence along a few feet of the vein of abundant chalcopyrite. The quartz vein is here only about 3 in. in...width and consists of glassy ,vhite quartz and chalcopyrite, which accordi11g to its abundance, varies from...the edges of the pocket, where, by decrease of chalcopyrite, t·he vein passes into the normal wolfram-bearing...fluorspar partly fill drusy cavities. Occasionally chalcopyrite and/or molybdenite are also found in the mica |  | | Journal (article/letter/editorial) | | to 35 Pyrrhotite 0.1 to 5 Pyrite 0.1 to 2.8 Chalcopyrite Trace to 1.3 Rutile 0.1 to 2.6 Ilmenite Trace...networks. Significant amounts of pyrrhotite±chalcopyrite trail on the ends of some ore shoots in unaltered...networks of concordant pyrrhotite-arsenopyrite(±chalcopyrite) veinlets also occur in foliated tourmaline...been recorded at other mesothermal lodes in the region such as the small Bochum Mine in the granulites...of a breccia with quartz, chlorite, pyrite, chalcopyrite, gold and bismuthinite (Sieber 1991) and locally |  | | Report (issue) | | 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...lodes are cassiterite, with some stannite ; chalcopyrite, bornite, and chalcocite ; wolframite and scheelite...conjunction with the geological structure of the region, lead to the important observation that the more...tourmaline, cassiterite, chlorite, :fluorite, chalcopyrite and pyrite. 28 SOURCES OF SUPPLY OF TIN ORES |  | 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) | | et al. 2009). The final magmatic event in this region is represented by the Mashishimale pluton, emplaced...association between pyrite (Pyr) with mingled chalcopyrite (Ccp) and ullmanite (Ull; bar scale, 100 μm)...exploration strategy should be employed in the region, recognizing the Baderoukwe Batholith as the central...object of concerted exploration targeting in this region. Miner Deposita (2012) 47:739–747 Acknowledgments...Survey of Mines Department, 14–16th September 1993, Mbabane, Swaziland, pp 54–56 Brandl G, Jaeckel P, Kröner |  | | Book (edition) | | occur there has been in addition a sinking of the region due to deep earth disturbances and the depressions...serpentine, Barberton 75 Amosite asbestos, Pcnge 81 CHALCOPYRITE A copper and iron sulphide. H. 3,5-4. R.D....feathers. Bornite is not as rich in copper as chalcopyrite and chalcocite, but is found in close association...are the sulphides - chalcocite, bornite and chalcopyrite. The remains of ancient smelting works also...source of phosphates. The main copper ore is chalcopyrite with lesse amounts of bornite and chalcocite |  | | 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 |  | 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) | | carbonates along with pyrite, arsenopyrite, and chalcopyrite±pyrrhotite. An inner alteration zone is dominated...minor chalcopyrite, pyrrhotite, and galena. In the proximal zone pyrite, arsenopyrite, chalcopyrite, pyrrhotite...inclusions within arsenopyrite I. c Gold (Au) and chalcopyrite inclusions within pyrite I with arsenopyrite...arsenopyrite II at the pyrite I boundary. d Chalcopyrite, pyrrhotite, and arsenopyrite II inclusions within pyrite...foliation (Figs. 7g, h and 8b). Sulfides such as chalcopyrite, pyrrhotite, and galena and gold also occur |  | | 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 |  | | 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 |  | | Journal (article/letter/editorial) | | some fine-grained sphalerite and rarely some chalcopyrite and galena. The sulfur isotope composition of...the Londosi Valley, Crown mineral area No. 7, Mbabane District. Rep. Swaziland Geol. Survey. (unpubl...upper matle and the ore deposits of the Barberton region. Geol. Soc. S. Afr., Spec. Publ., 2: 221--244. |  | | Journal (article/letter/editorial) | | i'_ . ...""_ i ) X /'C.._"5"-X ~ x ~x/./~ x Mbabane Fig. 1. Locality map showing position of the Barberton...include zircon, tourmaline, apatite, chromite, and chalcopyrite. Pyrite is a notable constituent of diagenetic |  | 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...by pyrrhotite + arsenopyrite ± loellingite ± chalcopyrite ± pyrite, with biotite + hornblende + fuchsite...orebody contains minor sulfides comprising ~5% chalcopyrite, 15% pyrrhotite, and 80% needle-shaped arsenopyrite |  | | Report (Issue volume) | | occurrence of diamonds in this region. Gold, native copper, chalcopyrite, molybdenite, scheelite and cinnabar...'Gaylussite-bearing clays from the Lake Amboseli region of Kenya' ; November, 1 965. No. 2 1 3 : 'Samples...rougl1 tracks and wadi beds. The economy of the region was originally based upon pearling, fishing, goat...Geology The first clear outline of the geology of the region as a whole was given by Lees ( 1 928) ; detailed...Trucial States. For the purpose of this account the region may be divided into three parts : ,. PLA fE |  | | Journal (article/letter/editorial) | | terrains, and its stabilization within a larger region of continental lithosphere. The Megasequence comprises...Bickle et al. (1983)]. apatite, together with chalcopyrite, molybdenite and pyrite. A representative major...Barberton region and Swaziland: an update. 16th Int. Symposium on African Geology, Mbabane, Swaziland...geochronology of Archaean felsic units in the Marble Bar region, Pilbara Craton. Precambrian Res. 56, 169–189....geochemistry of Archaean granites in the Kalgoorlie region of the Eastern Goldfields, Western Australia. Precambrian |  | | Book | | basic understanding of the geology of an area or region will never happen without initial observation of...(1872) on East Africa, in which the Great Lakes region of central eastern Africa is very poorly figured...suture zone along the southern Lake Tanganyika region; it also cut across the Mesoproterozoic Kibaran...environments of Eurasia, and varied extensively from region to region. Synchroneity of climatic change through the...to the Tuareg shield, which comprises the Hoggar region and its southwestern and southeastern prolongations |  | | Report (issue) | | arsenopyrite, iron-pyrites~ \volframite, sometimes chalcopyrite and small quantities of bismt1thinite and molybdenite...tin has been wo1~ked a.l ong the oourse of the Mbabane River, where it is d,e rived fnom pegmatitic portions...principally froim the Swazi Tin Company, Ljmited, at Mbabane. The, deposits are worked by the well-kno•w n alluvial...:-Arsenopyrite, p,y rite, scheelite, wo,l framite, chalcopyrite, magnetite, molybdenite, hoomatite, galena,...s siterite are tourmaline, fluorspar, topaz, chalcopyrite, arsenopyrite, wolframite, bismuthinite, magnetite |  | | Journal (article/letter/editorial) | | minor amounts of quartz, carbonate, pyrite and chalcopyrite. According to Reimer (1980), the mineralised... but lesser, amounts of galena, tennantite, chalcopyrite and covellite. Sphalerite and galena are preferentially...deformation. Finely disseminated pyrite and chalcopyrite is present in the immediate footwall, while...Johnstone for access to properties in the Three Sisters region, and for assistance during fieldwork. D. du Toit...Africa. Ext. Abstr. 16th Int. Coll. Afr. Geol., Mbabane, pp. 201 –206. Martin, H., 1986. Effect of steeper |  | | Journal (issue) | | first deposit to be seriously exploited in the region. of native gold. Most of these specimens were...the Barberton goldfields were discovered. This region is located in the Transvaal Lowveld (i.e., lower...Langlaagte farm was not an isolated event in that region. The dates of these various gold finds are shown...which is considered to be the source of gold in the region. Komatiites, which are magnesiun1-rich ultramafic...near the granite-greenstone contacts (e.g., the Hhohho, Pigg's Peak and Forbes Reef areas). Mineralization |  | | Report (issue) | | Core drilling is being carried out in the Western Region to trace the extension of the mangani ferous zone...zone of the Birrimian, and in the Eastern Region the discovery that nickel is associated with sulphides...investigation by the seismic 1nethod of the headwater region of the Lupa River in Southern Tangan yika where...of the work 0f the seismologist in the Caribbean Region. COLONIAL GEOLOGICAL SURVEYS VOLCANIC-SEISMIC...seismic and volcanic activity in the Caribbean Region was inaugurated in 1952 under the auspices of the | | | Journal (issue) | | first deposit to be seriously exploited in the region. of native gold. Most of these specimens were ultimately...the Barberton goldfields were dis covered. This region is located in the Transvaal Lowveld (i.e., lower...Langlaagte farm was not an isolated event in that region. The dates o f these various gold finds are shown...is considered to be the source o f gold in the region. Komatiites, which are mag nesium-rich ultramafic...near the granite-greenstone contacts (e.g ., the Hhohho, Pigg’s Peak and Forbes R eef areas). M ineralization |  | | Book | | underground water supply in the south-central Kalahari region. The primary objective of a visit to Ngamiland...salt deposits in the Nata area of the Makarikari region. Mapping was started in Ngamiland. Water borehole...east and southeast of Sua Pan in the Makarikari region and although the single core borehole drilled picked...development of the brine deposits of the Makarikari region. C.A.L. 5 24. Anon. 1963 Searching for mineral...has been opened up at Bomvu Ridge northwest of Mbabane. A large china clay deposit occurs in the southern |  | | Journal (article/letter/editorial) | | southern Africa. Previous isotopic dating in the region suggests an ~150 my period of prograde granulite-facies...dating of the major orthogneissic units of the region. These data point to Kibaran crustal growth at...took place between ~2000 and 1800 Ma. Between this region and the OCD, amphibolite-facies granitic orthogneisses...history of granulite-facies metamorphism in the region. NUMBER 12 ROBB et al. GRANULITE METAMORPHISM...biotite + sillimanite + quartz. The OCD occurs in a region characterized by lower granulite-facies (Fig. 1) |
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