 | | 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) | | resembles those from the ca. 1900 Ma Hartley lavas and Mashonaland sills. The MAM-2 overprint may be related...magma-driven fluid migration during rifting as the Hartley-Mashonaland igneous event perforated the Kalahari craton...upgrading with east vergent thrusting in the Griqualand West foreland, during the early or medial stages of the...flow to thrusting and crustal thickening from the west during the Kheis orogenic event at ca. 1700 to 1800...inclusion studies 23°00'E A. Wessels Mine N'chwaning II Mine Hydrothermally altered area containing |  | | Report (issue) | | ZIMBABWE GEOLOGICAL SURVEY BULLETIN No. 90 The Erosion Surfaces of Zimbabwe L. A. LISTER, M.Sc., D.Phil...LIBRASÏ ZU - 06.01 Ölungen ïte Cstteilands 72& ZIMBABWE GEOLOGICAL SURVEY BULLETIN No. 90 iSRiC LIBRARY...Wagentngen, The Netherlands The Erosion Surfaces of Zimbabwe L. A. LISTER, M.Sc, D.Phil. ISSUED BY AUTHORITY...the erosion surfaces of Zimbabwe. She has lectured at the University of Zimbabwe since 1963 and this Bulletin...earlier authors had postulated. Cainozoic tilting in Zimbabwe, which raised the eastern margin of the country |  | | Journal (issue) | | Geological Society of Zimbabwe G Z S Newsletter October 2014 Prof. Nic Beukes, A.L. du Toit Memorial...contributing to the field excursion at the Orpheus Mine, Redcliff, 26th October 2014. See Field Notes in... Geological Society of Zimbabwe Newsletter October, 2014 The Geological Society of Zimbabwe, P.O. Box CY 1719...……………………………….. NEWS Geology Department, University of Zimbabwe ……………………………….. The Professor Tom Blenkinsop UZ...Drive, Mount Pleasant, Harare, Zimbabwe. 2 Geological Society of Zimbabwe Newsletter October, 2014 Editorial |  | | 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) | | PRE-BULAWAYAN METAMORPHITES In the area south and west of Selukwe, Stowe (1968, pp.17--22; 1971, p.379)...almandine + magnetite Retrograde schists now consist of tremolite + olivine + chlorite + magnetite, tremolite/anthophyllite...diopside hornblende + andesine + garnet grunerite + magnetite fuchsite + biotite Because of the marked difference...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) |  | Oberthur, T., Weiser, T. W., Melcher, F., Gast, L., Wohrl, C. (2013) DETRITAL PLATINUM-GROUP MINERALS IN RIVERS DRAINING THE GREAT DYKE, ZIMBABWE. The Canadian Mineralogist, 51 (2) 197-222 doi:10.3749/canmin.51.2.197 | Journal (article/letter/editorial) | | PLATINUM-GROUP MINERALS IN RIVERS DRAINING THE GREAT DYKE, ZIMBABWE Thomas OBERTHÜR§, Thorolf W. WEISER, Frank MELCHER...and PGE-oxides (unstable). Keywords: Great Dyke, Zimbabwe, alluvial sediments, Pt-Fe alloy, Os-Ir-Ru alloy...Bushveld Complex of South Africa, the Sudbury district in Canada, and later Norilsk in Russia came into...intrusions (Bushveld, South Africa; Great Dyke, Zimbabwe; Stillwater, USA) that host the overwhelming proportion...of knowledge on the Great Dyke of Zimbabwe. The Great Dyke of Zimbabwe constitutes the world’s second largest |  | | 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 |  | | 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 |  | | Journal (article/letter/editorial) | | setting of the Palaeoproterozoic Magondi Supergroup, Zimbabwe – Type locality for the Lomagundi carbon isotope...the Archaean granitoid-greenstone terrain of the Zimbabwe Craton and experienced deformation and metamorphism...deeper-water shelf to continental slope deposits in the west (Piriwiri Group). Based on the upward-coarsening...strike and, more dramatically, across strike to the west, reaching upper amphibolite to granulite facies...the Magondi Basin, the Limpopo Belt between the Zimbabwe and Kaapvaal cratons, and the Kheis Belt on the |  | | 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)...from the base–metal refinery (Evans 2002). At Hartley Mine, the recovered grades of Pt and Pd from pristine |  | 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 |  | 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...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...al. (2003). They were collected from the Hartley Platinum Mine in the Darwendale subchamber (Fig. 1c)....Darwendale Subchamber Harare Zimbabwe 0 Meter 19° S 1500 Mimosa Mine Local Road iver ro R Orthopyroxenite |  | 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 (issue) | | Geological Society of Zimbabwe Newsletter February, 2007 Geological Society of Zimbabwe Newsletter February...SOCIETY OF ZIMBABWE, P.O. BOX CY 1719, CAUSEWAY, HARARE • Geological Society of Zimbabwe Newsletter...Department, University of Zimbabwe ……………………………………… The Geological Survey of Zimbabwe ………………………………………………… Mining...…………………………………………………… …. 22 2 Geological Society of Zimbabwe Newsletter February 2007 Editorial All the very...endeavours is critical. 3 Geological Society of Zimbabwe Newsletter February 2007 We continued to pursue |  | | 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...Zambezi belt and the underlying, well-developed magnetite gabbro unit at the top of the Great Dyke sequence...and deformation along the northern edge of the Zimbabwe craton at ca. 2.57 to 2.62 Ga. Thrust deformation |  | | 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 |  | D’Agrella-Filho, Manoel S., Trindade, Ricardo I.F., Tohver, Eric, Janikian, Liliane, Teixeira, Wilson, Hall, Chris (2011) Paleomagnetism and 40Ar/39Ar geochronology of the high-grade metamorphic rocks of the Jequié block, São Francisco Craton: Atlantica, Ur and beyond. Precambrian Research, 185 (3) 183-201 doi:10.1016/j.precamres.2011.01.008 | Journal (article/letter/editorial) | | 008 Atlantica (Amazonian, West Congo-São Francisco, Rio de la Plata and West Africa proto-cratons), Ur...Ur (Antarctica, Australia, India, Madagascar, Zimbabwe and Kaapvaal cratons) and Nena (North America,...craton (SFC), considered to be an extension of the West Congo craton (WC) in a pre-Atlantic configuration...samples (e.g., JQ24D in Fig. 2) indicates SD-magnetite is present in these rocks. Most curves present...185 (2011) 183–201 which is typical of (titano)magnetite. Examples of hysteresis loops for samples from |  | 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) | | 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...of sulfide mineralization likely occurred at Unki Mine with primary sulfides occurring in association with |  | | Journal (issue) | | Geological Society of Zimbabwe Newsletter May 2006 Geological Society of Zimbabwe Newsletter May 2006...SOCIETY OF ZIMBABWE, P.O. BOX CY 1719, CAUSEWAY, HARARE Geological Society of Zimbabwe Newsletter .............7 GEOLOGY DEPARTMENT, UNIVERSITY OF ZIMBABWE ...................................................................7 THE GEOLOGICAL SURVEY OF ZIMBABWE ………………………………………………………… 8 RECENT EARTHQUAKE ACTIVITY........................15 GEOLOGICAL SOCIETY OF ZIMBABWE HONORARY MEMBERS…………………………. 15 CONTACT DETAILS |  | | Journal (article/letter/editorial) | | Nickeliferous Archean Madziwa Igneous Complex, Northern Zimbabwe: Petrological Evolution, Magmatic Architecture... 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...light of investigations carried out before final mine closure (including detailed mapping, walk-over surveys |  | | 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 |  | | Journal (issue) | | CONSTRAINTS ON GOLD MINERALIZATION IN GRANITOIDS IN THE ZIMBABWE CRATON: STRUCTURAL CONTROLS AND IMPLICATIONS FOR...CONSTRAINTS ON GOLD MINERALISATION IN GRANITOIDS IN THE ZIMBABWE CRATON: STRUCTURAL CONTROLS AND IMPLICATIONS FOR...CONSTRAINTS ON GOLD MINERALISATION IN GRANITOIDS IN THE ZIMBABWE CRATON: STRUCTURAL CONTROLS AND IMPLICATIONS FOR...CONSTRAINTS ON GOLD MINERALISATION IN GRANITOIDS IN THE ZIMBABWE CRATON: STRUCTURAL CONTROLS AND IMPLICATIONS FOR...CONSTRAINTS ON GOLD MINERALISATION IN GRANITOIDS IN THE ZIMBABWE CRATON: STRUCTURAL CONTROLS AND IMPLICATIONS FOR |
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