 | | 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 (article/letter/editorial) | | Metamorphic ShearZonesof the RencoMine, Southern Zimbabwe ALEXANDER F. M. KISTERS, • JOCHEN KOLB, ANDF...Germany Abstract TheRencogoldminein southern Zimbabwe istheonlyknownmajorgolddeposit in thegranulite...Associated wall-rock alteration comprises a garnet-biotite-quartz _+sideritemineralassemblage. Mineral textures...textures withinthehostmylonites, aswellasgarnet-biotite thermometry, indicate golddeposition attemperaturesofabout600øC...havegivenrise hosted outside the realms of the Zimbabwe eraton. The Reneo to a debateabouttheconditions |  | | 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 |  | | Report (chapter) | | from the north marginal zone of the Limpopo belt, Zimbabwe H. R. Rollinson The Limpopo mobile belt is an...belt. This contrast is most obvious in southern Zimbabwe at the junction between the Zimbabwean craton...craton-mobile-belt boundary along a line from Masvingo to Rutenga (Fig. 1) shows a steeply dipping reflective...quartzplagioclase-garnet-orthopyroxene + orthoclase + biotite _+ F e - T i oxides. Ferruginous granulites (metamorphosed...retrogression of granulites and the growth of biotite. Geothermometry and barometry 1 The Fe/Mg exchange |  | | Journal (issue) | | Geological Society of Zimbabwe G Z S Newsletter October 2015 No. 3 of 3 of 2015 Heavy mineral concentrate...Society of Zimbabwe, P.O. Box CY 1719, Causeway, Harare Geological Society of Zimbabwe Newsletter ... ARTICLES AND REPORTS A Review of Diamonds in Zimbabwe – a Century On .................................11 12 NEWS Geology Department, University of Zimbabwe – Maideyi Meck ……………… The Professor Tom Blenkinsop... ! ! ! ! ! ! ! ! ! 2 Geological Society of Zimbabwe Newsletter October, 2015 Editorial Welcome to |  | | Journal (article/letter/editorial) | | mid-crustal auriferous mylonites of the Renco mine, southern Zimbabwe Received: 27 October 1998 / Accepted:...constraints on auriferous shear zones of the Renco mine in the Northern Marginal Zone of the late-Archaean...late-Archaean, granulite-facies Limpopo Belt in southern Zimbabwe indicate that deformation and associated mineralization...medium-grade granite-greenstone terrains of the Zimbabwe craton. Mineral assemblages indicate that the...overthrusting of the Northern Marginal Zone onto the Zimbabwe craton, and coeval amphibolite-facies hydration |  | | 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) | | 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 (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) | | (NORTHERN MARGINAL ZONE, LIMPOPO BELT, ZIMBABWE)--A THE RENCO MINE DISCUSSION ALEXANDER F. M. KISTERS...waspromoted bytransiently suprazone,Limpopobelt,Zimbabwe)" in whichtheauthors pres- lithostatie fluidpressures...datawhichtheyinterpretto be consistent withthe garnet-biotite-quartz alteration-mineral assemblage indicates...ralparageneses containing a ubiquitous garnet-biotite-quartz _+carbonate (siderite)al- greenschist suggests...sulfidemineralization and garnet-biotite-quartz alteration, catinga fluid-dominated here that biotite which is regarded |  | | 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 (article/letter/editorial) | | ornetite: University ofToronto Rencogoldmine,southern Zimbabwe: TerraNova,Abstract supplement Studies, Geological...goldmineralizationat Rencomine,Zimbabwe: Unpublished Ph.D.dissertation, London, Zimbabwe: Geofluids II '97 Symposium...TECTONICS AT THE RENCO MINE (NORTHERN MARGINAL ZONE, LIMPOPO BELT, ZIMBABWE)--A REPLY TOM G. BLENKINSOP...Geology, University of Zimbabwe, P.O.BoxMP167,MountPleasant, Harare,Zimbabwe AND ROBERT FREI Geologisk...compatible with a single mineralization such as Renco is often contentious and has eventof LateArcheau |  | 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...mineralization. The major gold-bearing pyrite-biotite-sericite mineralization formed in association with...This occurred at ca. 2520 Ma as determined from biotite (ca. 2515 Ma, 40Ar/39Ar age), pyrite (ca. 2505...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 |  | | Report (chapter) | | Archaean granulites in the Northern Marginal Zone, Zimbabwe: evidence for secular change in orogenic style...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) | | with muscovite and K-feldspar, and surrounding biotite schists, all derived by intense premetamorphic...based on phase relations, geobarometers and garnet-biotite Fe-Mg exchange partitioning. Partial melting occurred...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 |  | | 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...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...molybdenite,andarsenopyrite. Preliminarygeochemical the mine series share immobile trace and minor eledata indicate |  | 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...calcite-microcline-calcic-amphibole veins and biotite altered wallrock adjacent to the veins. Temperatures...640~ based on amphibole-plagioclase and garnet-biotite thermometry. In this respect, the deposits are...Kalgoorlie at higher crustal levels. The Mt. York District is located in the Archaean Pilgangoora greenstone |  | | Journal (article/letter/editorial) | | type. Other deposits around the world, such as Renco and Griffins Find, are hosted in granulite facies...paper: Als, aluminosilicate; Asp, arsenopyrite; Bt, biotite; Cpx, clinopyroxine; Crd, cordierite; Grt, garnet;...the host rock is a monotonous, pelitic garnet-biotite gneiss with varying amounts of orthopyroxene and...within the deposit. Rock types other than garnet-biotite gneiss comprise a very small proportion (<5%) of...Structural features Within the migmatitic garnet-biotite gneiss, the rock is generally comprised of leucosome |  | 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 |  | | Journal (article/letter/editorial) | | chlorite, sericite, biotite, calcite alteration and a 3–5-mwide proximal biotite, plagioclase, quartz...authors would like to thank the mine management of the Hutti Gold Mine Ltd. for the permission to publish...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...conditions and fluid evolution in the Hutti Gold Mine, India. Berichte der Deutschen Mineralogischen Gesellschaft |  | | Journal (article/letter/editorial) | | Marginal Zone of the Limpopo Belt in southern Zimbabwe represent a suite of dry magmas of tonalite-t...during late Archaean crustal growth in southern Zimbabwe invites comparison with modern convergent margins...rocks. The Limpopo Belt is located between the Zimbabwe and Kaapvaal Archaean Cratons of southern Africa...Northern Marginal Zone, which is situated in southern Zimbabwe (Fig. 1 ). The geology of the NMZ was first described...northern boundary of the NMZ, adjacent to the Zimbabwe Craton. Following Robertson and Du Toit (1981) |  | 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) | | mineralization. Major gold-bearing pyrite-biotite-sericite 120 mineralization is interpreted to...facilitated fluid movement and the formation of hydrous biotite and 235 sericite, and disseminated sulphide....anorthite, 20% quartz, 10% orthoclase, 3% hematite, 7% biotite, and 358 accessory corundum, ilmenite, and apatite...microcline and microperthitic orthoclase exsolution. Biotite grains display a prominent sagenitic texture of...quartz, biotite, chlorite, muscovite, rutile, pyrite, ilmenite, zircon, 398 and monazite. Biotite occurs |  | | Journal (article/letter/editorial) | | granulite-facies deposits (the amphibole-biotite-calcite and garnet-pyroxene-biotite classes of Mueller and Groves...ricite-biotite _ albite assemblages (greenschistamphibolite transition) to amphibole-biotite-plagioclase...quartz biotite, albite Quartz, biotite, calcic-amphibole, calcite, plagioclase Quartz, biotite, clinopyroxene...(K-feldspar) Quartz, K-feldspar, clinopyroxene, garnet, biotite, (wollastonite) Pyrite, arsenopyrite 250-350~...Pyrrhotite, arsenopyrite, loellingite 600-700~ Biotite-ankerite Amphibole Diopside Diopside-K-feldspar |  | | Journal (article/letter/editorial) | | palladium gold under lateritic conditions, Maquiné Mine, Minas Geraies, Brazil—C.A.C. Varãjao, F. Colin...1343 Chlorine-bearing amphiboles from the Fraser mine, Sudbury, Ontario, Canada: Description and crystal...1385 Paragenesis and composition of amphibole and biotite in the MacLellan gold deposit, Lynn Lake greenstone...1405 The oxidation ratio of iron in coexisting biotite and hornblende from granitic and metamorphic rocks:...lead-copper selenite chloride from the Baccu Locci mine, Sardinia, Italy—I. Campostrini, C.M. Gramaccioli |  | | Book | | USSR Academy of Sciences, Chernogolvka, Moscow district, U . S . S . H . J. Foden, Bureau of Mineral Resources...Rhodesia, Box M.P. 167, Mount Pleasant, Harare, Zimbabwe. R.W. Ojakangas, Department of Geology, University...O. B o x . MP. 1 6 1 , Mount Pleasant, Harare, Zimbabwe. B.F. Windley, Department of Geology, University...MINERALISATION IN THE EARLY PRECAMBRIAN CRUST OF ZIMBABWE J.F. Wilson and T.H.C. Nutt 555 MINERAL OCCURRENCES...631 LITHIUM PEGMATITES OF AMARESHWAR, RAICHUR DISTRICT, KARNATAKA, INDIA T.C. Devaraju, N. Rajshekhar |
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