 | | Journal (article/letter/editorial) | | Pancake EG&G Technical Services, Inc., Morgantown, West Virginia 26505, USA email: Pancake@eg.netl.doe.gov...Department of Geology, University of Zimbabwe, Harare, Zimbabwe email: jmukwakwami@yahoo.co.uk © 2004...Limpopo Belt; M: Middelburg; MD: main extent of Mashonaland dolerite sheets, from Wilson (1990); PC: Phalaborwa...Lineament; TC: Trompsburg Complex. Modified from Zimbabwe Geological Survey (1994), Keyser (1997), Key and...coeval mafic rocks elsewhere in South Africa and Zimbabwe help to constrain the nature and temporal and |  | | Journal (article/letter/editorial) | | Platinum-Group Element Mineralisation in the Great Dyke, Zimbabwe, and its Relationship to Magma Evolution and Magma...Prendergast 1 Carson Close, Greendale, Harare, Zimbabwe. e-mail: marprend@hotmail.com ABSTRACT The platinum-group...magma chamber. Introduction The Great Dyke of Zimbabwe contains the world’s second largest single resource...Mimosa mine is commencing major expansion, open-cast operations recently began at the Ngezi mine and further...the Archaean granites, and greenstones of the Zimbabwe Craton (Figure 1). Aligned approximately NNE, |  | | Journal (article/letter/editorial) | | PRE-BULAWAYAN METAMORPHITES In the area south and west of Selukwe, Stowe (1968, pp.17--22; 1971, p.379)...Victoria; (9) Ghoko; (10) Gatooma-Hartley; (11) Gwanda; (12) Gwelo; (13) Lonely Mine; (14) Lower Gwanda; (15)...Tod's Hotel; (P) Topisi; (Q) Triangle---Chiredzi;(R) West Tuli. morphism, noted by Oldham {1968, pp.189--190)...successions are noted, viz. 12 km in the Bulawayo District (Amm, 1940), 24 km at Hunters Road, Gwelo (Macgregor...regions. The pattern is obscured by sediments in the west and a Pan-African metamorphic overprint in the north |  | | Journal (article/letter/editorial) | | OBIGIKAL AETICLES. I.—NOTES ON THE GEOLOGY OF MASHONALAND AND MATABELELAND. By J. A. CHALMERS, A.R.S.M...last century, the Portuguese had settlements in Mashonaland, and that they both carried on mining operations...1017/S0016756800121107 194 Messrs. Chalmers 8f Hatch—Mashonaland 8f Matabeleland. The later facts of history...PHYSICAL FEATURES. The area of Matabeleland and Mashonaland, now consolidated, is upwards of 135,000 square...salubrious portions of Matabeleland and Mashonaland, stretches from south-west of Buluwayo, in a north-easterly |  | Stribrny, B., Wellmer, F. -W., Burgath, K. -P., Oberthür, T., Tarkian, M., Pfeiffer, T. (2000) Unconventional PGE occurrences and PGE mineralization in the Great Dyke: metallogenic and economic aspects. Mineralium Deposita, 35 (2) 260-280 doi:10.1007/s001260050019 | Journal (article/letter/editorial) | | redistributions should be kept in mind during planning and mine operation. Investigations of unconventional PGE...initial production from mines in the Great Dyke of Zimbabwe has yielded 2.1 t Pt. The remaining 9.54 t are...Russia Stillwater, USA Sudbury, Canada Great Dyke, Zimbabwe Kupferschiefer, Poland Bregu i Bibes, Albania...production, for example those of the Great Dyke, Zimbabwe, ± potential alternatives in the form of unconventional...mineralizations PGE in layered intrusions: the Great Dyke, Zimbabwe Geological setting The ca. 2.58-Ga-old Great Dyke |  | | Report (issue) | | interest in the geo logy and mineral resources of Zimbabwe which followed the removal of United Nations sanctions...original Bulletin is the insertion of Table IIIA, Zimbabwe Mineral Production and Value, on page 114A. Due...for views of Wankie Colliery and the Trojan nickel mine, and to the Photographic Section of the Ministry...Trojan Nickel Mine, near Bindura. facing page 33 V The Great Dyke. Northern part of the Hartley Complex...Complex. VI Chrome seam in the Great Dyke, Vanad Mine. VII Lower Karoo Landscape. No. 1 Colliery, Wankie. |  | | Journal (article/letter/editorial) | | mineralogy of platinum-group elements at Hartley Platinum Mine, Zimbabwe Part 1. Primary distribution patterns...platinum-group element (PGE) mineralization. At the Hartley Platinum Mine, the MSZ is up to some meters thick and...Æ Main Sulfide Zone Æ Great Dyke Æ Hartley Platinum Mine Æ Zimbabwe Introduction Deposits of platinum-group...Bushveld Complex, South Africa). The Great Dyke of Zimbabwe (Fig. 1) constitutes the world’s second largest...economic-grade primary MSZ ores collected at the Hartley Platinum Mine. The present paper reports on the distribution |  | Oberthür, Thomas, Davis, Donald W., Blenkinsop, Thomas G., Höhndorf, Axel (2002) Precise U–Pb mineral ages, Rb–Sr and Sm–Nd systematics for the Great Dyke, Zimbabwe—constraints on late Archean events in the Zimbabwe craton and Limpopo belt. Precambrian Research, 113 (3) 293-305 doi:10.1016/s0301-9268(01)00215-7 | Journal (article/letter/editorial) | | for the Great Dyke, Zimbabwe —constraints on late Archean events in the Zimbabwe craton and Limpopo belt...Department, Uni6ersity of Zimbabwe, PO Box MP 167, Mount Pleasant, Harare, Zimbabwe Accepted 23 August 2001...interpretations of the crustal development of the Zimbabwe craton. Close temporal links between the intrusion...granitoids (Chilimanzi and Razi suites) of the Zimbabwe craton are indicated by the new precise age data...of the Northern Marginal Zone over the Zimbabwe craton. A west-to-east diachroneity in both thrusting |  | | Journal (article/letter/editorial) | | in the oxidized Main Sulfide Zone, Great Dyke, Zimbabwe Marek Locmelis & Frank Melcher & Thomas Oberthür...Great Dyke mafic/ultramafic layered intrusion of Zimbabwe, economic concentrations of platinum-group elements...Beneficiation . PGE oxides Introduction The Great Dyke of Zimbabwe is a 2,575.4±0.7-Ma-old mafic/ ultramafic layered...cutting Archean granites and greenstone belts of the Zimbabwe Craton (Prendergast 1988; Oberthür et al. 2002)...chromitites, and an upper mafic sequence made up of plagioclase-rich norites, gabbronorites, and olivine gabbros |  | Maier, W.D., Määttää, S., Yang, S., Oberthür, T., Lahaye, Y., Huhma, H., Barnes, S.-J. (2015) Composition of the ultramafic–mafic contact interval of the Great Dyke of Zimbabwe at Ngezi mine: Comparisons to the Bushveld Complex and implications for the origin of the PGE reefs. Lithos, 238. 207-222 doi:10.1016/j.lithos.2015.09.007 | Journal (article/letter/editorial) | | ultramafic-mafic contact interval of the Great Dyke of Zimbabwe at Ngezi mine: Comparisons to the Bushveld Complex and...ultramafic-mafic contact interval of the Great Dyke of Zimbabwe at Ngezi mine: Comparisons to the Bushveld Complex and...contact interval of the Great Dyke of Zimbabwe at Ngezi T mine: Comparisons to the Bushveld Complex...NU 1. SC R Sulfide Zone. The Great Dyke of Zimbabwe is one of the world’s largest layered mafic-ultramafic...Archaean granitoids and greenstone belts of the Zimbabwe craton at T about 2575 Ma (Mukasa et al., 1989; |  | | Journal (article/letter/editorial) | | Main Sulfide Zone at Unki Mine, Shurugwi Subchamber of the Great Dyke, Zimbabwe: Evidence from Petrography...element (PGE) occurrence in the Great Dyke of Zimbabwe, the Main Sulfide Zone (MSZ), is a tabular stratabound...silicate composition study across the MSZ at Unki Mine in the Shurugwi Subchamber was conducted to help...the mineralization. The PGE-enriched zone at Unki Mine is a ~10 m thick package of rocks ranging from gabbronorites...gabbronorites, a chromitite stringer, plagioclase websterite, plagioclase pyroxenite (pegmatitic in one narrow |  | | Journal (article/letter/editorial) | | Nickeliferous Archean Madziwa Igneous Complex, Northern Zimbabwe: Petrological Evolution, Magmatic Architecture...framework ahead of an advancing postcumulus plagioclase crystallization front. 0361-0128/15/4328/1295-18... am bia 30°E 32°E 100 km Fig.2 Eo M P Zimbabwe craton E Harare Mr Mutare 19°S Bulawayo ...Introduction The Madziwa Igneous Complex in northern Zimbabwe comprises a regional group of nickeliferous, mafic-ultramafic...principal causal role in sulfide segregation at Madziwa mine and the camp was later cited as a type-example of |  | Li, Chusi, Ripley, Edward M., Oberthür, Thomas, Miller, James D., Joslin, Gregory D. (2008) Textural, mineralogical and stable isotope studies of hydrothermal alteration in the main sulfide zone of the Great Dyke, Zimbabwe and the precious metals zone of the Sonju Lake Intrusion, Minnesota, USA. Mineralium Deposita, 43 (1) 97-110 doi:10.1007/s00126-007-0159-x | Journal (article/letter/editorial) | | alteration in the main sulfide zone of the Great Dyke, Zimbabwe and the precious metals zone of the Sonju Lake...antimonides occur as inclusions within individual plagioclase crystals and within alteration assemblages that...isotopes . Great Dyke . Sonju Lake Intrusion . Zimbabwe . USA Introduction The debate on the origin of...intruded Archean granites and greenstone belts of the Zimbabwe craton (Worst 1960; Wilson 1996; Fig. 1a). Two...composed of >80 wt% orthopyroxene with interstitial plagioclase, clinopyroxene, phlogopite, and quartz. Variable |  | | Journal (article/letter/editorial) | | communication Timing of thermal stabilization of the Zimbabwe Craton deduced from high-precision Rb–Sr chronology...Keywords: Rb–Sr Cooling age Archean Great Dyke Zimbabwe Craton a b s t r a c t Dating low temperature...4 Ma was obtained from the Archean Great Dyke, Zimbabwe Craton, in contrast to the intrusion age of 2575...age of the Great Dyke marks the final stage of Zimbabwe craton stabilization and that the greater craton...The map shows the Republic of Zimbabwe with the Rhodesian (or Zimbabwe) Craton as a grey-shaded area |  | | Book | | Redistribution in the Main Sulfide Zone of The Great Dyke, Zimbabwe T. Oberthür, F. Melcher 75-96 97-111 6. Placers...Systems: Refining the Classification Using McCreedy West Mine and Podolsky Project Case Studies 163-180 C.E...geochemical surveys M.L. Zientek, S.R. Corson, R.D. West 391-407 19. Exploration and Mining Perspective...Sulfide Zone of the Great Dyke, Zimbabwe - Case Study of the Hartley Platinum Mine A.H. Wilson, R.T. Brown ...REDISTRIBUTION IN THE MAIN SULFIDE ZONE OF THE GREAT DYKE, ZIMBABWE T. Oberthür, F. Melcher INTRODUCTION GEOLOGICAL |  | Piña, R., Gervilla, F., Barnes, S.-J., Oberthür, T., Lunar, R. (2016) Platinum-group element concentrations in pyrite from the Main Sulfide Zone of the Great Dyke of Zimbabwe. Mineralium Deposita, 51 (7) 853-872 doi:10.1007/s00126-016-0642-3 | Journal (article/letter/editorial) | | from the Main Sulfide Zone of the Great Dyke of Zimbabwe R. Piña 1 & F. Gervilla 2 & S.-J. Barnes 3 & T...The Main Sulfide Zone (MSZ) of the Great Dyke of Zimbabwe hosts the world’s second largest resource of platinum-group...other trace element contents in pyrite from the Hartley, Ngezi, Unki, and Mimosa mines of the Great Dyke... LA-ICP-MS . Main sulfide zone . Great Dyke . Zimbabwe Introduction Pyrite [FeS2] is a common minor...distribution of PGE in the deposits. In the Great Dyke of Zimbabwe, the world’s second largest resource of PGE after |  | | Journal (article/letter/editorial) | | mineralogy of platinum-group elements at Hartley Platinum Mine, Zimbabwe Part 2: Supergene redistribution in...present in the Makwiro River close to the Hartley Platinum Mine indicates further mineralogical changes...Sulfide Zone Æ Placers Æ Great Dyke Æ Hartley Platinum Mine Æ Zimbabwe Editorial handling: O. Thalhammer...Espoo, Finland Introduction In the Great Dyke of Zimbabwe, economic concentrations of platinum-group elements...MSZ created in the course of mining at Hartley Platinum Mine. The present study focuses on the redistribution |  | | Book | | Council Glossary of the minerals of the Lake District and adjoining areas B. Young NEWCASTLE UPON...siderite, Force Crag Mine, Braithwaite (MNS 4491) Back cover-'Daisy' gypsum, Birks Head Mine, Long Marton (MNS...Gill Mine, Caldbeck Fells (MNS 4492) (top right) Quartz, variety rock crystal, Carrock Fell Mine, Mosedale...(bottom left) Hematite, variety kidney ore, Nab Gill Mine, Boot (MNS 4490) (bottom right) ISBN O 85272 099...NG12 5GG Plumtree (060 77) 6111 Murchison House, West Mains Road, Edinburgh EH9 3LA 031-667 1000 Windsor |  | | Journal (article/letter/editorial) | | in the Musengezi Subchamber of the Great Dyke, Zimbabwe M.D. Prendergast Guesachan, Shielhill Road, Kirriemuir...Great Dyke straddles the boundary between the Zimbabwe craton and the late Archaean Migmatitic Gneiss...zones suggestive of sequential stacking towards the west. Shearing and associated metasomatism increase from...and deformation along the northern edge of the Zimbabwe craton at ca. 2.57 to 2.62 Ga. Thrust deformation...IN THE MUSENGEZI SUBCHAMBER OF THE GREAT DYKE, ZIMBABWE Introduction The P1 Pyroxenite layer of the Great |  | | Journal (article/letter/editorial) | | of the Darwendale Subchamber of the Great Dyke, Zimbabwe Jefferson B. Chaumba a7* J, Allan H. Wilson b3’...July 1996 Abstract Oxygen isotope values for plagioclase, clinopyroxene and orthopyroxene from the upper...silicates is narrow and the average values are: plagioclase, 8 “0 = + 6.90%0; orthopyroxene, 8 IgO = + 6...oxygen (up to 59%) from the Archaean rocks of the Zimbabwe craton which has whole-rock 6 IgO values going...contamination 1. Introduction The Great dyke of Zimbabwe is the world’s second largest resource of platinum-group |  | | Journal (article/letter/editorial) | | noble-metal distribution in the Great Dyke of Zimbabwe: A model for the origin of the PGE mineralization...noble-metal distribution in the Great Dyke of Zimbabwe: A model for the origin of the PGE mineralization...the Darwendale Subchamber of the Great Dyke of Zimbabwe there are three principal sulfide zones that are...way, and it is suggested that mixing with a plagioclase-saturated magma, possibly generated around the...lithological units (Prender- The Great Dyke of Zimbabwe is the world's second largest reserve of platinum-group |  | | Journal (article/letter/editorial) | | 1985 Mineralisation at the Carrock Fell Tungsten Mine, N. England: Paragenetic, fluid inclusion and geochemical...WC1X 8NG Abstract. Tungsten ore at Carrock Fell Mine comprises wolframite and scheelite in polyminerallic...the Grainsgill Granite and environs Carrock Fell Mine, Cumbria (Fig. 1), the only economic tungsten mineralisation...Kingdom outside the Hercynian province of South-west England, produces wolframite and scheelite from...extracted from three principal veins named, from west to east, the Smith Vein, the Harding Vein and the |  | | Book | | U–Pb Baddeleyite Ages of Mafic Dyke Swarms of the West African and Amazonian Cratons: Implication for Their...from doleritic dykes in the southern part of the West African Craton. The following swarms are distinguished:...provides the first robust LIP bar code for the southern West African Craton, and the results are used in a new...Western Mongolian Altai, Eastern Junggar, North and West Bank of Balkhash, Western Junggar, and Chingis-Taerbahatai...U–Pb Baddeleyite Ages of Mafic Dyke Swarms of the West African and Amazonian Cratons: Implication for Their |  | | Journal (article/letter/editorial) | | GEOLOGICAL EVOLUTION OF THE MAGONDI MOBILE BELT, ZIMBABWE P E T E R J. TRELOAR Department of Geology, Imperial...the Magondi Mobile Belt, Zimbabwe. Precambrian Res., 38: 55-73. The Zimbabwe Archaean craton is flanked...overthrusting of hot earlyProterozoic rocks from the west effectivelysandwiching the Magondi rocks between...interplay between the two may be observed. The Zimbabwe Archaean craton is typical of such blocks being...Mozambique and Zambezi Mobile Belts, respectively. To the west the craton is bordered by the early-mid Proterozoic |  | | Journal (article/letter/editorial) | | 0022-3530/92 $3.00 The Geology of the Great Dyke, Zimbabwe: Crystallization, Layering, and Cumulate Formation...ultramafic to mafic rocks in the Great Dyke of Zimbabwe and is referred to as the PI pyroxenite layer...the Great Dyke. THE GEOLOGY OF THE GREAT DYKE, ZIMBABWE 613 Gabbronorite PI pyroxenite Ultramafic Sequence...rock • Faults Railway Road Village Sel a Selous Mine Borehole/w. number BH FIG. 1. General locality...study area. (A) Location of the Great Dyke in Zimbabwe. (B) Subdivision of the Great Dyke into chambers |
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