 | Layer, Paul W., Krƶner, Alfred, McWilliams, Michael, York, Derek (1989) Elements of the Archean thermal history and apparent polar wander of the eastern Kaapvaal Craton, Swaziland, from single grain dating and paleomagnetism. Earth and Planetary Science Letters, 93 (1) 23-34 doi:10.1016/0012-821x(89)90181-7 | Journal (article/letter/editorial) | | dated to define the thermal history of the Archean Mbabane Pluton, Swaziland. Coincident ZĀ°vPb/2Ā°6pb zircon...time of emplacement at - 2690 Ma. Because the Mbabane Pluton is one of a suite of granites which represent...represents this age of magnetization. Thus, the Mbabane Pluton yields a precisely dated Archean (2687 +...locations of the Gaborone Granite, Botswana and the Mbabane Pluton, Swaziland. The area enlarged in the main...location of the younger granite plutons. MB = Mbabane Pluton, MP = Mpageni Pluton, NG = Ngwempisi Pluton |  | | Journal (article/letter/editorial) | | Occurrence of Chrysotile Asbestos, Usushwana Valley, Mbabane District, Swaziland By D. R. HUNTER 1 ABSTRACT...the Usushwana river valley some 10 miles west of Mbabane, has been sporadically prospected since its discovery...Usushwana river valley, about 10 miles west of Mbabane, capital of Swaziland, Southern Africa. Since that...laths of tremolite, residual cores of olivine, magnetite, and carbonate. The greater abundance of residual...schists composed of tremolite, talc, chlorite, magnetite, and some carbonate. These occur commonly as rectangular |  | | 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) | | Fig. 1. (a) Geological sketch map of the sampling region (after Huddleston, 1951 and Schoeman, 1949). Sampling...mobility. 2. Geology and tectonics of the Kisii region Kabete et al. (2012a, 2012b) summarized recent... Fig. 2. Generalized stratigraphy of the Kisii region. Ages are summarized in Kabete et al. (2012) and/or...40Ar/39Ar ages from the Nyanzian basalts in the Kisii region yielded plateau ages between 2670 and 2680 Ma that...dips <10Ā°). The age of the minor tilting in the region is not known, but is most probably related to the |  | | Journal (article/letter/editorial) | | vectors. unblocks at 580 ā¦ C is single domain (SD) magnetite, and the small unblocking window suggests it is...580 ā¦ C), but instead suggest slightly oxidised magnetite (van Velzen and Zijderveld, 1995). This could...Curie balance show that the contribution of SD magnetite to the bulk magnetic mate- rial of the sample...Nhlebela Fm. sample. The contribution of (SD) magnetite to the total induced magnetisation appears to...parameter is higher in situ than tilt-corrected. (F) Mbabane Pluton site VGP position and mean palaeopole (Layer |  | | Journal (article/letter/editorial) | | models which propose plate tectonic analogues in the region. The two granite suites are distributed along two...cross-cut all other Archaean rock types in the region. A total of 10 granite plutons have been recognized...recognized in the Archaean terrane of the Barberton region and Swaziland (Fig. l). Their distribution roughly...the west, this trend is defined by the Mpageni, Mbabane, Ngwempisi and Sicunusa plutons, whereas the easterly...variety of other Archaean granite lithologies in the region and several of them also cut across the 2871 + |  | Gumsley, Ashley, Olsson, Johan, Sƶderlund, Ulf, de Kock, Michiel, Hofmann, Axel, Klausen, Martin (2015) Precise U-Pb baddeleyite age dating of the Usushwana Complex, southern Africa ā Implications for the Mesoarchaean magmatic and sedimentological evolution of the Pongola Supergroup, Kaapvaal Craton. Precambrian Research, 267. 174-185 doi:10.1016/j.precamres.2015.06.010 | Journal (article/letter/editorial) | | the Barberton-Badplaas Dyke Swarm in the larger region of the south-eastern Kaapvaal Craton formed along...Pongola Supergroup. A ferruginous shale in this region has been dated at 2860 Ā± 26 Ma by Walraven and...Fig. 4. This map is modiļ¬ed from the 1:250 000 Mbabane (2630), Vryheid (2730) and Swaziland geological...Complex was derived from a Pb-Pb isochron on a magnetite layer in the Piet Retief Gabbro Suite (Walraven...30.887470ā¦ E. Maps modiļ¬ed from the 1:250 000 Mbabane (2630), Vryheid (2730) and Swaziland geological |  | | 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...quartz; Garnet + orthopyroxene + grunerite + magnetite + quartz Garnet + clino-pyroxene + hornblende...phases of some plutons such as Sinceni and in the Mbabane area carry cassiterite, which has been worked from |  | | Journal (article/letter/editorial) | | (Figure 2), forming a northeast-striking hilly region, which has the typical geomorphological expression...rutile and sphene. The opaque minerals comprise magnetite, hemo-ilmenite, hematite, limonite and pyrite...scapoliteand pyroxene-bearing amphibolitic units in this region. The amphibolites commonly occur as mesobands,...and pentlandite are seen together with minor magnetite and ilmenite, and point to an igneous origin of...proceedings of the 16th Colloquium On African Geology, Mbabane, Swaziland, 19-21. Coolen, J.J.M.M.M., Priem, H |  | Gumsley, A.P., de Kock, M.O., Rajesh, H.M., Knoper, M.W., Sƶderlund, U., Ernst, R.E. (2013) The Hlagothi Complex: The identification of fragments from a Mesoarchaean large igneous province on the Kaapvaal Craton. Lithos, 174. 333-348 doi:10.1016/j.lithos.2012.06.007 | Journal (article/letter/editorial) | | NW-trending dolerite dyke swarm on the southeastern region of the Kaapvaal Craton in northern KwaZulu-Natal... cpx ā clinopyroxene, act ā actinolite, mg ā magnetite, ep ā epidote, and plg ā plagioclase feldspar...2966 Ā± 1 Ma and 2967Ā± 1 Ma in the southeastern region of the craton (Olsson et al., 2010). Following...old as the 2782 Ā± 5 Ma Derdepoort basalts. The region is also cross-cut by the 2686 Ā± 6 Ma to 2662 Ā±...swarm (Olsson et al., 2010). The whole southeastern region of the Kaapvaal Craton was also then intruded by |  | | Journal (issue) | | survey was continued over the large deposits of magnetite at the Busumbu complex; attention has largely...concentrates at Sukulu, after washing and the removal of magnetite, includes about 90 per cent. apatite, 5 per cent... 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...\videspread. Some small, uncommon occurrences of magnetite were noted, and two beds of crystalline z,Ā£mestone |  | | Journal (issue) | | Southern Nyasaland page Linear Parallelism of Magnetite Phenocrysts in Sovite, Chilwa Mountain '' 316...ITE r-:::_~~ALLUVIUM TITAN I fE:ROUS ā¢-ā¢ TMā¢ -Ā·MAGNETITE. P ELUVIAL PLATINUM, \ (f SPECKOR MORE/ 10 LB...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 |  | | Journal (article/letter/editorial) | | the Motuoshala deposit, Xinjiang Uygur Autonomous Region is associated with chert and jasperite ŽFan and...Devonian FeāMn Hematite, rhodochrosite, braunite, magnetite Mn calcite, manganiferous calcite Sandstoneāmudrockā...todorokite Hematite, rhodochrosite, braunite, magnetite, jasper Dounan Mugui Motuoshala FeāMn Sedimentary...Braunite, bixbyite, jacobsite I, jacobsite II, magnetite, hematite, tephroite, pyroxmangite, bustamite...Alabandite, rhodochrosite, Fe rhodochrosite, magnetite, hematite, galena, pyrrhotite, arsenopyrite, sphalerite |  | Gutzmmer, J., Beukes, N. J., Kleyenstuber, A. S. E., Burger, A. M. (1995) Magnetic hausmannite from hydrothermally altered manganese ore in the Palaeoproterozoic Kalahari manganese deposit, Transvaal Supergroup, South Africa. Mineralogical Magazine, 59 (397) 703-716 doi:10.1180/minmag.1995.059.397.12 | Journal (article/letter/editorial) | | these The magnetic hausmannite is, similar to magnetite erosional relicts covers an area of about 35 km...magnetic hausmannite is very similar to that of magnetite as reported by Yamazaki et al. (1991) (Fig. 6)...manganese content. It is for example 858 K in magnetite (Table 3). a) Electron spin configuration of...e. not far off from the Curie temperature of magnetite. The Mn3+-Fe3+ exchange apparently enforces the...according to all these studies, into the two-phase region, the single phase 'magnetic hausmannite' should |  | | Journal (article/letter/editorial) | | Ng= Ngwempisi Pluton; Kw=Kwetta granite; Mbb= Mbabane Pluton. sists of a great many components of different...minerals present in all samples include ilmenite, magnetite, zircon, monazite, apatite and allanite. Tourmaline...Distinctive mineralogy tourmaline, muscovite biotite, magnetite, garnet, beryl, Li-minerals rare tourmaline Distribution...cycle. This appears not to be the case for the Mbabane Pluton, which has been precisely dated at about...logistical support in the field. R.M. Maphalala (Mbabane) is thanked for his active support and hospitality |  | | Journal (article/letter/editorial) | | approximatelatitude33o-35Ćø N. Liebenbergstatesthat in this region"the alluvial transportof uraniniteextendsup to...sulfides butcontain animmense quantity ofmartitized magnetite oā¢ hematite. Professor Kotlyarandhiscolleagues...Hunter, D. R., 1961, The geologyof Swaziland: Mbabane,104 pp. Geology and MineralDeposits of the Pachuca-Real |  | | Journal (issue) | | compounds of Ti, Mn and P, and very small amounts of magnetite, quartz and zircon. The Caribbean terra rossa...probably as a phosphate of aluminium or iron. Magnetite, quartz, and well-developed zircon crystals are...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 |  | | 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...Hill Formation is directly associated with the magnetite-bearing quartzite and pisolitic ironstones developed...Ironatones eatall~ng Icr ~.101ms. Thin (1 - 8.5m) magnetite martzlto ext ;.-.&.-~ lof 380kin Woll red Ā¢olouratl~n...the Olifantshoek Sequence in the Griqualand West region (Table 1 ) contain a basal ferruginous conglomerate |  | | Journal (issue) | | at temperatures far in excess of tl1e stability region of chrysotile. . The remaining aqueous solutions...in the cement process. These minerals include magnetite, pyrochlore, apatite, baddeleyite, zircon, knopite...Rift in connection with oil prospecting of the region. This survey, apart from its purely practical value...System and Older Granite of the S.W. portion of the Mbabane district has resulted in considerable advances...cassiterite-bearing pegmatites in the vicinity of Mbabane reveals an estimated tonnage of 50,000 running |  | | Journal (article/letter/editorial) | | clinozoisite, titanite, zircon, ilmenite, and magnetite are minor phases. At the type locality (sites...surrounding Baviaanskloof Gneiss indicate that the region last cooled below 300 Ā°Cbetween ~2.04 and ā1.82...magma source region. The ~2.79 Ga Rb-Sr isochron age may also reflect the magma source region. Postulated...northeastern Transvaal. Ext. Abstr., ColloquiumAft Geol., Mbabane, Swaziland, 54ā56. 16ih Burger, A.J. and Walraven |  | | Journal (article/letter/editorial) | | sample A G C 28 (black squares). The measured (magnetite-corrected) pattern of light and middle REE for...staff at the Geological Survey and Mines Dept., Mbabane, for logistic support and for help during field...available an unpublished geological map of the Dwalile region. W. Compston and I.S. Williams provided assistance...geochemistry of Archean granitic rocks from the Barberton region, South Africa. Earth Planet. Sci. Lett., 29: 389-400...geochronology of Archean plutonism in the Barberton region, South Africa. 800 m.y. of crustal evolution. Geol |  | van Schijndel, Valby, Stevens, Gary, Zeh, Armin, Frei, Dirk, Lana, Cristiano (2017) Zircon geochronology and Hf isotopes of the Dwalile Supracrustal Suite, Ancient Gneiss Complex, Swaziland: Insights into the diversity of Palaeoarchaean source rocks, depositional and metamorphic ages. Precambrian Research, 295. 48-66 doi:10.1016/j.precamres.2017.04.025 | Journal (article/letter/editorial) | | chlorite), and accessory ilmenite, hercynite-magnetite, apatite, zircon and monazite (Figs. 3e and f)...Swaziland Geological Survey and Mines Department, Mbabane, Swaziland. Wilson, A.C., 1982. Geological map...Swaziland Geological Survey and Mines Department, Mbabane, Swaziland. Wilson, A.H., Groenewald, B., Palmer...orthopyroxene, cordierite, ilmenite and hercynite-magnetite. Replacement by chlorite. (f) Pseudomorph after...cordierite, quartz, biotite, ilmenite, and hercynite-magnetite. Sample DW1437 (g) metapelite with quartz, sillimanite |  | | 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) | | together with detrital pyrite, chromite, zircon, magnetite,ilmentite, molybdenite and gold. The baryte was...sphene, calcite, pleonast spinel, garnet and magnetite (Viljoen and Viljoen, 1969b). They tend to occur...following detrital minerals: gold, molybdenite, magnetite and ilmenite. The grain morphology of the softer...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) | | to 1.3 Rutile 0.1 to 2.6 Ilmenite Trace to 0.8 Magnetite Trace to 0.4 Pentlandite Trace Sphalerite Trace...been recorded at other mesothermal lodes in the region such as the small Bochum Mine in the granulites...Abstracts: 16th Colloquium of African Geology, Mbabane, Swaziland, 171-172. Kerrich, R. (1983) Geochemistry |
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