 | Buchholz, P., Oberthur, T., Luders, V., Wilkinson, J. (2007) Multistage Au-As-Sb Mineralization and Crustal-Scale Fluid Evolution in the Kwekwe District, Midlands Greenstone Belt, Zimbabwe: A Combined Geochemical, Mineralogical, Stable Isotope, and Fluid Inclusion Study. Economic Geology, 102 (3) 347-378 doi:10.2113/gsecongeo.102.3.347 | Journal (article/letter/editorial) | | Crustal-Scale Fluid Evolution in the Kwekwe District, Midlands Greenstone Belt, Zimbabwe: A Combined Geochemical,...The Kwekwe district comprises the central part of the Archean Midlands greenstone belt of Zimbabwe and...represents one of few Archean gold provinces in the world hosting gold deposits associated with massive...low-grade Sb-bearing stage 3. Four gold deposits within the Kwekwe district have been studied. The Primrose...Globe and Phoenix gold deposits display typical features of Archean orogenic lode gold systems such as |  | | Journal (article/letter/editorial) | | Granite-hosted gold mineralization in the Midlands greenstone belt: a new type of low-grade gold deposit in...in Zimbabwe Received: 29 January 1997 / Accepted: 22 September 1997 Abstract In 1992, the Ford gold deposit...in the Kwekwe district near the Indarama mine, approximately 200 km southwest of Harare, Zimbabwe. Based...are at least 3 Mt with an average gold content of 2.5 g/t. The gold deposit is located within a porphyritic...as the Sherwood- and Taba-Mali deformation zones. Gold mineralization is con®ned to the s-shaped part of |  | | Report (chapter) | | structure and gold mineralization in the Kadoma region of the Midlands greenstone belt, Zimbabwe R. J. H E...Archaean greenstone gold deposits are located in distinctive structural settings, and Zimbabwe is a good example...example with over 90% of its gold production being derived from structurally controlled veisns, shear zones...hosted deposits. The structural framework of the Zimbabwe craton is dominated by the evolution of the c...major shear zones focused strain, which in the Midlands greenstone belt, evolved from pure N-S compression |  | | Journal (issue) | | Geological Society of Zimbabwe Newsletter September 2006 Geological Society of Zimbabwe Newsletter September...Tarka Forest ‘Gold Rush’ July, 2006 Collins Mwatahwa THE GEOLOGICAL SOCIETY OF ZIMBABWE, P.O. BOX CY...1719, CAUSEWAY, HARARE Geological Society of Zimbabwe Newsletter September 2006 Contents EDITORIAL...Department, University of Zimbabwe ………………………………………….. 8 The Geological Survey of Zimbabwe ……………………………………………………...…………………………………………………… …. 15 2 Geological Society of Zimbabwe Newsletter September 2006 Editorial Welcome |  | Nutte, T. H. C., Oberth�r, T., Saager, R., Tomschi, H. -P. (1988) The geology, mineralogy and geochemistry of the broomstock gold deposit, Kwekwe Greenstone Belt, Zimbabwe; Some implications for gold mineralization in jaspilite iron formations. Mineralogy and Petrology, 39 (2) 145-162 doi:10.1007/bf01184820 | Journal (article/letter/editorial) | | the Broomstock Gold Deposit, Kwekwe Greenstone Belt, Zimbabwe; Some Implications for Gold Mineralization...Geology Department, University of Zimbabwe, Mount Pleasant, Harare, Zimbabwe, 2 Mineralogisches Institut,...April 22, 1988 Summary At Broomstock Mine, three types of gold mineralization have been identified: (i)...jaspilite-hosted ore, revealed that areas carrying economic gold grades are characterized by fracturing, brecciation...in the jaspilites as channelways. Deposition of gold and sulfides occurred in response to changing P-T |  | | Journal (article/letter/editorial) | | and Geochemical Features of Fluids of Precamrbian Gold Deposits V. Yu. Prokofieva, *, V. B. Naumovb, **...composition of fluids of Precambrian endogenous gold deposits. The average values and ranges of temperature...salinity of fluids from the Archean and Proterozoic gold deposits are estimated. It is revealed that fluids...geodynamics of the planet in the Proterozoic. The large gold deposits (>100 tons) are characterized by narrower...large Proterozoic deposits is established. Keywords: gold deposits, Archean, Proterozoic, fluid inclusions |  | Oberthür, T., Blenkinsop, T. G., Hein, U. F., Höppner, M., Höhndorf, A., Weiser, T. W. (2000) Gold mineralization in the Mazowe area, Harare-Bindura-Shamva greenstone belt, Zimbabwe: II. Genetic relationships deduced from mineralogical, fluid inclusion and stable isotope studies, and the Sm-Nd isotopic composition of scheelites. Mineralium Deposita, 35 (2) 138-156 doi:10.1007/s001260050012 | Journal (article/letter/editorial) | | Weiser Gold mineralization in the Mazowe area, Harare-Bindura-Shamva greenstone belt, Zimbabwe: II. Genetic...the Mazowe area some 40 km NW of Harare in Zimbabwe, gold mineralization is hosted in a variety of lithologies...the mainly granodiorite-hosted workings at Mazowe mine are on pyrite-rich reefs, mines of the Bernheim...arsenopyrite-rich ores, and Stori's Golden Shaft and Alice mine, both in metabasalts, work sul®de-poor quartz veins...the Mazowe gold ®eld markedly contrast to ore ¯uids ``typical'' of Archean mesothermal gold deposits on |  | | Journal (article/letter/editorial) | | Geochemical Features of Ore-Forming Fluids for Orogenic Gold Deposits Throughout Geological Time Vsevolod Yu...composition of ore-forming fluids from orogenic gold deposits formed during various geological epochs...fluids (their salinity and pressure) at orogenic gold deposits are demonstrated to systematically vary...some parameters of mineralizing fluids at orogenic gold deposits are principally new information. The parameters...the mineralizing fluid systems. Keywords: orogenic gold deposit; mineralizing fluid; fluid inclusions; temperature; |  | | Report (issue) | | SURVEY DESCRIPTIVE, AND GRADE AND TONNAGE MODEL FOR GOLD-ANTIMONY DEPOSITS by Vladimir I. Berger1 Open-File...of antimony deposits. Gold-antimony deposits are associated with low-sulfide gold-quartz vein deposits...investigations I started in the former USSR. Until recently, gold-antimony deposits were not recognized as an individual...that may be useful for geologists interested in gold and antimony deposits. CONTENTS Page Abstract......................... 1 Descriptive model of gold antimony deposits.............................. |  | Obolensky, A.A., Gushchina, L.V., Borisenko, A.S., Borovikov, A.A., Nevol’ko, P.A. (2009) Computer thermodynamic modeling of the transport and deposition of Sb and Au during the formation of Au-Sb deposits. Russian Geology and Geophysics, 50 (11) 950-965 doi:10.1016/j.rgg.2009.10.004 | Journal (article/letter/editorial) | | solutions play a crucial role in the formation of gold parageneses of Au-Sb ores. © 2009, IGM, Siberian...quartz-vein Au-Sb deposits are referred to as Au-Sb or gold-stibnite beresite ore association (Berger, 1977...recognized a group of gold-stibnite-quartz deposits as an ore association among other gold-quartz ore associations...South African (Gravelot, United Jack, Weigel, Indarama, Gothic), Australian (Blue Speck, Wiluna), Yenisei...Thompson et al., 1999). Gold-antimony deposits show no relationship with gold deposits in granites, which |  | | Journal (article/letter/editorial) | | precipitation mechanism of stibnite-gold mineralization at the Wiluna lode-gold deposits, Western Australia:...Ó Springer-Verlag 2003 Abstract The Wiluna lode-gold deposits are located in the Archean Wiluna greenstone...shear veins and breccias. The 13 individual lode-gold deposits have produced around 115 t Au from 1901...Historically, they also produced 38.3 t As and 3.5 t Sb. Gold formed in two stages: stage 1 goldpyrite-arsenopyrite...wallrock and breccia fragments, whereas stage 2 gold-stibnite is located in massive shear veins and breccia |  | | Journal (article/letter/editorial) | | precipitation mechanism for ores in the Xikuangshan ore district, conventional and infrared microthermometric measurements...stibnite and associated gangue minerals in this ore district display significant differences. Fluid inclusions...stibnite and gangue minerals in the Xikuangshan ore district were not co-genetic, they were deposited from... 2014), but those orogenic-type and Carlin-type gold deposits usually share a low-salinity signature...mostly less than 6.0 wt% NaCl equiv. for the orogenic gold deposits (Groves et al., 1998, 2003; Ridley and |  | | Report (volume) | | Blenkinsop examine Archaean deformation patterns in Zimbabwe and the adjacent Limpopo Belt and discuss the...Stratigraphic and tectono-stratigraphic problems in Zimbabwe and Western Australia are described in the next...discuss the lode-gold deposits of the Yilgarn Block, in particular the source of the gold-bearing fluids...Archaean structure and gold mineralization in the Kadoma region of the Zimbabwe Midlands. Three papers describe...and others show that Archaean basins, such as the gold-bearing Witwatersrand basin in South Africa, formed |  | | Journal (article/letter/editorial) | | ableto causethe acidification neededto inducestibnite-gold mineralprecipitation. Introduction ALTHOUGH therehavebeennumerous...andthe conditions of deposition. fromthe Seiniijoka district,Finland(Borodaev et al., 1983), Stibnite,ashasalreadybeennoted...1988). vanandAndrS•,1994),andtheAlpha-Gravelotte mine,South Interestingly, theprincipal mineral associations...late Ore:arsenopyrite-pyrite followed by stibnite-gold tectonic in brittle structures Gangue:quartz,serieite...Nativeantimony or gudmundite dominant Seiniijoki district,Finland PiiakkOnen (1966),Balitsky et al. (1976) |  | | Journal (issue) | | Geological Society of Zimbabwe G Z S Newsletter February 2015 The annual Summer Symposium has been...Society of Zimbabwe, P.O. Box CY 1719, Causeway, Harare Geological Society of Zimbabwe Newsletter ...Dyke, Zimbabwe Freddy Chikwiri …………………………………………………………………….. Hydrocarbon Potential in Zimbabwe - Brent...……………………………… 14 NEWS Geology Department, University of Zimbabwe ……………………………….. The Professor Tom Blenkinsop UZ...………………………………………. 24 2 Geological Society of Zimbabwe Newsletter February, 2015 Editorial Its AGM |  | | Journal (article/letter/editorial) | | Light rare earth elements enrichment in an acidic mine lake (Lusatia, Germany)—Elke Bozau, Marc Leblanc...anthropogenic factors influencing mercury speciation in mine wastes: An EXAFS spectroscopy study— Christopher...polymetamorphic evolution of the granulite-hosted Challenger gold deposit: Implications for assembly of the northwest...Petersen 95 Morphological and chemical study of placer gold from the San Luis Range, Argentina—Maria Florencia...Wabigoon subprovince, Ontario, and implications for gold mineralization—Bruno Lafrance, Jerry C. DeWolfe |  | | Journal (article/letter/editorial) | | mineralization. Important depositsof chrome, nickel-copper,gold, and chrysotile asbestosare associated with the...ultramafic-maficcomponentof the volcanicpile, whereasantimony, gold, and lesseramountsof mercury,barite, corundum,copper-lead-zinc...fumarolic-exhalativeprocesses,also contain significantstratiform gold mineralization. The Archean mineralization of southern... correlatedwith copper, zinc, silver, lead, and gold, as well as antithe Lower UltramaficUnit, are widespreadin...opments of andesiticpillow category are certain gold and copper depositsin intrusionsof felsiccomposilavas |  | | Book (edition) | | Average Hardness Soft minerals, such as galena or gold, are very difficult to polish without any scratches;...certain degree of bending, while some metals, such as gold, may be deformed into very thin sheets. The term...pyrite, and irregular late stage pore-fillings of gold (yellow). Right: Finely laminated iron oolith with...Mineral lamellar faint, red yes brown bright green gold-yellow, silver-white (Ag) to copper-red (Cu); 72...bluish tint; 55.12 Internal Twinning Reflect. Gold, native Polarite yes Nickelskutterudite yes |  | | 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...near Salisbury. facing page 23 IV Trojan Nickel Mine, near Bindura. facing page 33 V The Great Dyke...Complex. VI Chrome seam in the Great Dyke, Vanad Mine. VII Lower Karoo Landscape. No. 1 Colliery, Wankie |  | | Book (edition) | | Silicides Copper I/A.01-10 4 Silver I/A.01-20 6 Gold I/A.01-40 8 Auricupride I/A.01-50 10 Amalgam I/A...Alloys and Alloy-like Compounds, with Copper, Silver, Gold and Nickel Algodonite II/A.01-10 Domeykite II/A...Tellurium < 1:1, Tellurides with Copper, Silver and Gold Linnaeite II/D.01-20 320 Polydymite II/D.01-30 322...Silver and Gold Series I/A.01-10 Copper I/A.01-15 Allabogdanite I/A.01-20 Silver I/A.01-40 Gold I/A.01-50...Silver and Gold Series I/A.01-10 Copper I/A.01-15 Allabogdanite I/A.01-20 Silver I/A.01-40 Gold I/A.01-50 |  | | Journal (article/letter/editorial) | | Gudmondite+ pyrrhotite Bollden, Sweden Jacob(19•2) Nikko mine, South Korea Imai (•9•9) Little CarpathianMtns....ambiguities. One is to measure the scribed from several gold mines (Graham and heat contents of all phases, especially...stibniteqthe entropiesof reaction. Another is to check the gold is a commonone and it is of interestto define antimonyq-stibnite...in- the boundarybetweenaurostibiteand stibniteq- gold. Hultgren and others (1963) tabulatedata that, with...(Fe•S• spinel) + stibnite for aurostibite+ stibnite+ gold (+ vapor). This assemblagedescribedby Radusinovid |  | | Journal (article/letter/editorial) | | pressure fluctuation – Application to understand gold mineralization in quartz veins of Gadag (southern...circle analysis of vein opening, Indarama lode-gold deposit, Zimbabwe: Implications for exploration; J...Delhi supergroup of rocks around Siyawa, Sirohi district, Rajasthan, NW India; PhD Thesis. Sarkar S C, |  | | Journal (issue) | | Sci 69(5):452-454 Research article Arsenic in mine waters: an international study M. Williams Abstract...are presented for arsenic (As) in the mine waters of 34 gold and base-metal mining localities in seven...As**-As°* relationship with mine water pH/Eh regime. Important determinants of mine water As fluxes include...sequence that follows sulphide oxidation, climate and mine management. Human toxicological im- pacts of As...risk assessment. Keywords Speciation Arsenic - Mine waters - Toxicity - Mobility - transformations |  | | Journal (issue) | | White Development Officer William D. Panczner GOLD! Associate Editors written content Paul E. Desautels...Julius Weber Mamaroneck, N.Y. Articles Collecting gold mining memorabilia................................323 by W. E. Wilson and R. Bentley Nova Scotian gold ..................................................Colorado Quartz mine, Mariposa County, California: a modem source of crystallized gold ................... 347 by A. R. Kampf and P. C. Keller Harvard gold ............................................... |  | | Book | | further detail than, for example, some of the minor gold and copper fields of Australia, which may be responsible...plumbago, sapphires, and asbestos—like tin, nickel, gold, and diamonds— merit particular notice as products...Introduction CHAPTER I Mink Labotjb 1. Census of mine employees.—2. Socialistic Unionism.—3. Premium on...CONTEXTS CHAPTER IV INDIAN EMPIRE—Continued KOLAR GOLD-FlBLD PAGES 1. Ancient workings.—2. An old soldier's...Turn of fortune.—5. Nature of the schist band. — 6. Gold in chutes.—7. Methods of exploitation.—8. Ore reduction |
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