 | | Journal (article/letter/editorial) | | Belt in Zimbabwe H. ROLLINSON' & T. BLENKINSOP Department of Geology, University of Zimbabwe. PO Box...Box M P 167, Harare, Zimbabwe I Present address: Department of Geography and Geology, Cheltenham and Gloucester...with the Areverse-senseshearzoneformstheboundary Zimbabwe craton. The southern boundaryis the Triangle shear...Archaean, granulites, Limpopo Belt, Zimbabwe Marginal Zone in Zimbabwe, and interpret these in the light...representsazone of crustal thickening relative tothe Zimbabwe craton. It is the prime purpose of this paper |  | | Journal (issue) | | Geological Society of Zimbabwe G Z S Newsletter June 2013 The hand of Tom Blenkinsop – movement indicators...Society of Zimbabwe, P.O. Box CY 1719, Causeway, Harare Geological Society of Zimbabwe Newsletter ...….. 12 NEWS Geology Department, University of Zimbabwe ……………………………….. Geological Survey Department ………………………………………………...debeer@cadline.co.zw 2 Geological Society of Zimbabwe Newsletter June, 2013 Editorial Welcome to the...towards Zimbabwe Geology; and also to Luckmore Chiteshe for his winning project at the Zimbabwe School |  | | Journal (article/letter/editorial) | | Zone, Limpopo Belt, Zimbabwe, and relevance to gold mineralization at Renco mine Tom G. Blenkinsop Department...Geology, University of Zimbabwe, P.O. Box MP 167, Mount Pleasant, Harare, Zimbabwe Present Address: School...uni-mainz.de V. Chiwara Rio Tinto, Zimbabwe, PO Box AY 266, Harare, Zimbabwe e-mail: Victor.Chiwara@riotinto...field mapping and geochronological studies in the Renco mine area of the Northern Marginal Zone of the Limpopo...Archaean. Amphibolite facies gold mineralization at Renco mine probably occurred at this time, followed by Palaeoproterozoic |  | | Journal (article/letter/editorial) | | purposely lacking, as all information on regional and mine geology, host rock and ore sample descriptions,...Brazil [10–13]: Ajjanahalli, India [14,15]; Renco, Zimbabwe [16–20]; Hutti [21–27], Hira Buddini [28,29]...and Lega Dembi are situated in greenstone belts, Renco formed in a granulite facies mobile belt, Pilgrim’s...Geologic Settings New Consort Cuiabá Ajjannahalli Renco Hutti Hira Buddini Pilgrim’s Rest Lega Dembi Navachab...metasedimentary rocks and banded iron formation. Renco is an example of an unusual setting in that it is |  | | Journal (issue) | | Geological Society of Zimbabwe G Z S Newsletter February 2013 A Group Photograph taken during the...Society of Zimbabwe, P.O. Box CY 1719, Causeway, Harare Geological Society of Zimbabwe Newsletter ...for the Palaeoproterozoic Magondi Supergroup, Zimbabwe … 7 Geology and Petrology of the Umkondo Diamond...………. 16 NEWS Geology Department, University of Zimbabwe ……………………………….. Geological Survey Department ………………………………………………...debeer@cadline.co.zw 2 Geological Society of Zimbabwe Newsletter February, 2013 Editorial Thanks, |  | | Journal (article/letter/editorial) | | inclusion record of the hypozonal orogenic Renco gold deposit (Zimbabwe) during the retrograde P–T evolution...Springer-Verlag 2002 Abstract The hypozonal Renco gold deposit in Zimbabwe is hosted by a shear zone system cutting...inclusions in the mineralized lithologies of the Renco gold mine are dominated by carbonic inclusions of highly...ore fluid. All the aqueous inclusions observed at Renco can be attributed to a late, retrograde greenschist-facies...investigations of CO2-rich inclusions from the Renco gold deposit in the granulitefacies Northern Marginal |  | | Journal (article/letter/editorial) | | Archaean Limpopo Belt, Northern Marginal Zone, Zimbabwe John Ridley Key CentreJor Strategic Mineral Deposits...Archaean Limpopo Belt, Northern Marginal Zone, Zimbabwe. In: D.D. Van Reenen, C. Roering, L.D. Ashwal...northern boundary of the Limpopo Belt against the Zimbabwe Craton. The steep dip of this structure puts a...separates the granite-greenstone terrains of the Zimbabwe and Kaapvaal Cratons which were both developing...which dominate the central segment of the zone in Zimbabwe, (b) the possible tectonic settings of the charnockites |  | | Journal (article/letter/editorial) | | Mineralization and Tectonics at the Renco Mine (NorthernMarginalZone,LimpopoBelt,Zimbabwe) T. G. BLENKINSOP Department...Geology, University of Zimbabwe, P.O.BoxMP167,MountPleasant, Harare,Zimbabwe AND R. FREI GruppeIsotopengeologie...mostof the greenstone-associated deposits of the Zimbabwe eraton,whichareknownor inferredto be LateAreheart...Limpopobeltin andgenesis of thisgoldmineralization. Zimbabwe, in contrast withthemanygolddeposits associated...RegionalGeology withgreenstone beltswithinthe Zimbabwe craton.Furthermore,it is oneof the fewgolddeposits |  | | Journal (issue) | | Geological Society of Zimbabwe G Z S Newsletter February 2017 No. 1 of 3 of 2017 The last great...Society of Zimbabwe, P.O. Box CY 1719, Causeway, Harare Geological Society of Zimbabwe Newsletter ...collision for a Neoarcaean Limpopo orogen and Zimbabwe Craton since 2.75-2.74Ga ……… A field trip to the...11 12 NEWS Geology Department, University of Zimbabwe – Maideyi Meck …………… The Professor Tom Blenkinsop...………………………………... 13 16 17 18 GEOLOGICAL SOCIETY OF ZIMBABWE - AGM ……………………….. 20 RESEARCH FUNDING OPPORTUNITIES |  | Doyle, M. G., Fletcher, I. R., Foster, J., Large, R. R., Mathur, R., McNaughton, N. J., Meffre, S., Muhling, J. R., Phillips, D., Rasmussen, B. (2015) Geochronological Constraints on the Tropicana Gold Deposit and Albany-Fraser Orogen, Western Australia. Economic Geology, 110 (2) 355-386 doi:10.2113/econgeo.110.2.355 | Journal (article/letter/editorial) | | Australia Abstract Gold mineralization at the Tropicana mine occurs within the Plumridge terrane along the eastern...the Dharwar craton, India, and the Limpopo belt, Zimbabwe, economic gold mineralization at Tropicana postdates...studied examples include Hemlo in Canada, Renco in Zimbabwe, Hutti in India, Challenger in South Australia...July 27, 2014 356 DOYLE ET AL. (particularly K-feldspar and garnet) support a largely prepeak metamorphic...been used in support of a retrograde timing of the Renco deposit (e.g., Blenkinsop and Frei, 1996; Kisters |  | | Report (chapter) | | Marginal Zone, Zimbabwe: evidence for secular change in orogenic style T H O M A S G. B L E N K I N S O P...Marginal Zone (NMZ) of the Limpopo Belt in southern Zimbabwe is an essentially plutonic terrain, now consisting... The Northern Marginal Zone (NMZ) in southern Zimbabwe is a late Archaean, granulitegneiss belt that...2005. 194 T.G. BLENKINSOP & A. F. M. KISTERS Zimbabwe Craton to the north (James 1975) (Fig. 1). This...present-day crustal thicknesses of the NMZ and the Zimbabwe Craton (c. 35-40 km; Stuart & Zengeni 1989; Nguuri |  | | Journal (article/letter/editorial) | | sulphide-bearing ('lode') schists with muscovite and K-feldspar, and surrounding biotite schists, all derived...complex metamorphic assemblages occurs around the mine, compared to the assemblages developed regionally;...no evidence of higher metamorphic grades at the mine, nor that this might have been the prime control...lOOt Au), the Renco mine in the Rhodesian Craton of Zimbabwe (c. 30t Au), and the Consort mine in South Africa...the important parameters stabilizing the different K-bearing phases in the three auriferous rock types |  | 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...thrusting of the Northern Marginal Zone over the Zimbabwe craton. A west-to-east diachroneity in both thrusting |  | | Report (chapter) | | evolution of the Zimbabwe Craton HIELKE A. J E L S M A 1 & P A U L H. G. M . D I R K S 2 I CIGCES, Department...the Neoarchaean granites and greenstones of the Zimbabwe Craton, southern Africa. A major tectono-magmatic...2015 184 H. A. J E L S M A & P. H. G. M. D I R K S 0 z_,zzzzz~zzzzzzzzzzzzzzzzzzzz OO 0 0 ~ 0 0...University on June 26, 2015 TECTONIC EVOLUTION OF THE ZIMBABWE C R A T O N ~, ~ - - ~'~" ~ ~ ' ,~ _~... o o o o ~ o o o o o o o o o o o o F-F- ~ ZIMBABWE THE ~ o o o o o o o o o o o ~ 0 F- OF 9 |  | | Journal (article/letter/editorial) | | techniques. An early experiment on Precambrian K-feldspar used a stepwise HF attack and volatilization...convincingly showed that a stepwise HF dissolution can mine distinctive zones with characteristic U/Pb ratios...manner on age-constrained samples from southern Zimbabwe. Our study is confined to Ca-bearing silicates...15.03 0.02 33 85 0.05 ,957 quartz bulk. re Renco skarn 2. Analytical clinopyroxene techniques...07 35.03 0.15 ,994 Metaleucosome 92/135 K-feldspar hulk 21.30 0.04 16.69 003 41.07 0.08 .986 |  | | Journal (article/letter/editorial) | | gyof Western Australia; and Renco, Zimbabwe. For these the Calumet mine (Goranson, 1925; Moorhouse, depositsthere...Varndell, 1986), or in association transitionzone (mine series,Fig. 2) betweenfootwall with (Walfordet al...high-grade felsicgneisses (quartz-plagioclase-K feldspar-biotitemetamorphism. sillimanite)with subsidiary...whichwasalreadyin productionat that time separatedfrom the mine seriesby a fault or shear (Gauthieret al., 1985;...metamorphism followedby de- Hangingwallamphibolites Mine series & &gneisses limit of calcite-diopside alteration |  | | Journal (article/letter/editorial) | | type. Other deposits around the world, such as Renco and Griffins Find, are hosted in granulite facies...clinopyroxine; Crd, cordierite; Grt, garnet; Ksp, K-feldspar; Lo, löllingite; Musc, muscovite; Opx, orthopyroxine;...are generally composed of quartz + perthitic K feldspar ± plagioclase ± coarse-grained biotite and typically...with an intercumulus matrix of quartz, perthitic K feldspar, and plagioclase. In several samples, quartz...textures, where it was replaced by perthitic K feldspar. Both garnet and orthopyroxene contain larger |  | | Journal (article/letter/editorial) | | surrounded by an up to 5-cm-wide inner chlorite, K-feldspar, quartz, calcite, scheelite, tourmaline, titanite...authors would like to thank the mine management of the Hutti Gold Mine Ltd. for the permission to publish...syn-tectonic) ore deposits. In: Pasava J, Kribek B and Zak K (eds) Mineral deposits. Balkema, Rotterdam, pp 865–...interaction in auriferous mylonites of the Renco Mine, southern Zimbabwe. Miner Deposita 35:109–125 Kolb J, Rogers...inclusion record of the hypozonal orogenic Renco gold deposit (Zimbabwe) during the retrograde P–T evolution |  | | Journal (article/letter/editorial) | | solution are similar at all conditions with Na >>K _ Ca, although Ca may be less abundant at low temperatures...ore-fluid component concentrations (e.g. CO2, C1, __ K) suggests fluid-buffering and high fluid-rock ratios...reactions. Extrapolation to high temperatures of the K, Na and Ca contents of the gold-bearing fluids indicates...calcic-amphibole, plagioclase, (garnet), (K-feldspar) Quartz, K-feldspar, clinopyroxene, garnet, biotite, (wollastonite)...Biotite-ankerite Amphibole Diopside Diopside-K-feldspar 471 Where necessary, the above thermodynamic |  | Kirkland, C.L., Spaggiari, C.V., Smithies, R.H., Wingate, M.T.D., Belousova, E.A., Gréau, Y., Sweetapple, M.T., Watkins, R., Tessalina, S., Creaser, R. (2015) The affinity of Archean crust on the Yilgarn—Albany–Fraser Orogen boundary: Implications for gold mineralisation in the Tropicana Zone. Precambrian Research, 266. 260-281 doi:10.1016/j.precamres.2015.05.023 | Journal (article/letter/editorial) | | contains about 336 60% microcrystalline quartz–feldspar mosaic, 30% sericite, 5% epidote, and minor 338...some grains (Figure 365 4). 359 360 361 362 feldspar shows both microcline and microperthitic orthoclase...approximately 50% quartz, 40% plagioclase, 8% K-feldspar, 1% muscovite, and 380 accessory zircon, epidote...from 60.2 – 60.3 m depth, consists of about 20% feldspar 396 phenocrysts and 80% fine-grained, recrystallized...453 this drillcore consists of about 40–45% K-feldspar, 30% quartz, 20% plagioclase, 5% 454 biotite |  | Neumaryr, P., Groves, D. I., Ridley, J. R., Koning, C. D. (1993) Syn-amphibolite facies archaean lode gold mineralisation in the Mt. York District, Pilbara Block, Western Australia. Mineralium Deposita, 28 (6) 457-468 doi:10.1007/bf02431602 | Journal (article/letter/editorial) | | Archaean lode gold mineralisation in the Mt. York District, Pilbara Block, Western Australia P. Neumayr ~...The Archaean lode gold deposits in the Mt. York District, Pilbara Block, Western Australia are hosted in...Kalgoorlie at higher crustal levels. The Mt. York District is located in the Archaean Pilgangoora greenstone...Hill/Breccia Hill and Zakanaka prospects in this district. Gold was first discovered in the Pilbara Craton...1990), Western Australia, and location of Mt. York District recent production from a few relatively small |  | | Journal (article/letter/editorial) | | http://www.tandfonline.com/loi/tigr20 The Hadamengou Mine: A Typical Gold Deposit in the Archean Granulite...-Y. Yang & D. D. Van Reenen (1994) The Hadamengou Mine: A Typical Gold Deposit in the Archean Granulite...& Son, Inc. All rights reserved. The Hadamengou Mine: A Typical Gold Deposit in the Archean Granulite...the Proterozoic or Mesozoic eras. The Hadamengou mine is located in the E-W-trending Archean Daqingshan...northern margin of the North China craton. In the mine area, the Archean Wulashan Group rocks were metamorphosed |  | Smit, C.A., Van Reenen, D.D., McCourt, S., Huizenga, J.M., Belyanin, G., Vafeas, N.A. (2019) Hypozonal orogenic gold mineralization in the Giyani Goldfield, Northern Kaapvaal Craton/Limpopo Complex. South African Journal of Geology, 122 (4) 455-488 doi:10.25131/sajg.122.0037 | Journal (article/letter/editorial) | | New Consort in the Barberton greenstone belt and Renco in the Northern Marginal Zone (NMZ) of the Limpopo...that of Renco gold mine in the granulite facies terrane of the NMZ of the LC in Zimbabwe. The Renco deposit...against medium-grade granite-greenstone belts of the Zimbabwe Carton (ZC) to the north (Figure 5) (e.g., Kolb...2000, 2015; Blenkinsop, 2011). The ore deposit at Renco was formed at a minimum temperature of 600°C and...trending Birthday section hosts the Birthday gold mine as well as several gold prospects such as Boltman’s |  | | Book | | Deccan Traps, Aravalli, the Precambrian rocks o k Eastern and Southern India, etc., have been taken...Chadwick, Prof. R.M. Shakelton, Prof. K.C. Condie, Prof. K. Naha, Prof. R.K. Verma, P r o * . A.B. Roy, Prof...Srinivasan, Dr.U. Raval, Dr.M. Ramakrishnan, Dr. K. Gopalan, Dr.A.G. Menon and other friends f o r critically...USSR Academy of Sciences, Chernogolvka, Moscow district, U . S . S . H . J. Foden, Bureau of Mineral Resources...in Geology, Karnatak University, Dharwar, India. K. Laajoki, Department of Geology, University of Oulu |  | | Journal (article/letter/editorial) | | salinities of 3-7 wt. percent NaCl equiv., with Na>K>>Ca,Mg. This fluid composition consistency favors...geothermal gradients; (4) hydrothermal addition of K, S, CO2, H2O, Si, and Au, with variable additions...generally is defined by Na>K>>Mg and Ca, although precipitation of muscovite or K-feldspar from such a fluid will...albite because of the greater supersaturation of K relative to Na (e.g., Kerrich and Fyfe, 1981). MA...carbonaceous host rocks, such as in the Loulo district in Mali (Lawrence et al., 2013), may also lead |
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