 | | Journal (article/letter/editorial) | | data of BIFs from the greenstone terranes of the Zimbabwe and Kaapvaal cratons. The study revealed that...consisting of alternating thin layers of chert (quartz) and iron minerals (iron-oxides, -carbonates, -silicates...geochemistry of some BIF-hosted gold deposits in Zimbabwe and considers mineralogical and geochemical aspects...greenstone belts of the Kaapvaal and the adjacent Zimbabwe cratons (Fig. 1). The two cratons are separated...previously (Fripp 1976, Fos- S 126 BROOMSTOCK MINE _~7-" ZIMB,ABWE CRATON Distribution of ] ore zones |  | | Journal (article/letter/editorial) | | -HostedGold Mineralization in the Gwanda Greenstone Belt, Zimbabwe RUDOLF SAAGER,*THOMAS OBERTH/JR,AND...Germany Abstract The metamorphicrocksof the Archcan Gwanda greenstonebelt of southwesternZimbabwe consistof...which was obscuredby metamorphicoverprint. At Vubachikwe,discordantore stringersare explainedasmetamo...significantpart of the country'sforeignexchangeincome. In Zimbabwe gold mineralizationoccursgenerally in Archcangreenstoneterranes...1986, and our data). At presentonly the Bar 20, Vubachikwe, Blanket, and Lima mines are producing gold from |  | | Journal (article/letter/editorial) | | Ferruginous Quartzites (As Exemplified by the Zimbabwe Deposits) Ye. M. Nekrasov a a All-Union Research...Ferruginous Quartzites (As Exemplified by the Zimbabwe Deposits), International Geology Review, 26:1...FERRUGINOUS QUARTZITES (AS EXEMPLIFIED BY THE ZIMBABWE DEPOSITS) Downloaded by [Monash University Library]...who has studied regional metallogeny of gold in Zimbabwe. belts have been divided into three groups (Sebakwe...granite porphyries, quartz diorites, monzonites, and syenites, and dike-like stocks of quartz-feldspar and felsite |  | | Journal (article/letter/editorial) | | of Rhodesia. The occurrenceof gold at the Vubachikwe gold mine has been studied together with samplesof...Pickstone, and Sherwood Starr mines. At the Vubachikwe mine the orebodies occur in several thin beds of...bandediron-formation,which consistof layers alternately rich in quartz (cherty), arsenopyrite,pyrrhotite, and ankerite...Both he and Kleinot (1963), who later mappedthe mine in further detail,consideredthe gold to be of h...wasfaciI58 A detailed examination of the Vubachikwe mine has been made, and the stratigraphic situation |  | | 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 |  | | 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 (article/letter/editorial) | | Amm,1940;Goldberg, 1964;Lewis, Canada,Australia, Zimbabwe, SouthAfrica,Brazil,and lierworkers 1965) pointed...Theseincluderemobilizationof goldin bandediron-formation hosts Zimbabwe; Barberton; MorroVelho,Brazil).Thetwo earliersyngenetic...adaptedfromFripp's(1976a)modelforSebakwian timesin Zimbabwe. In developingcriteria for syngenesis or epigenesis...oxide thedeposits muts and Theron, 1975), on the mine scale(Groves (or carbonate) on a mesoscopic or microscopic...goldores.The oresare at Barberton, South Africa, and from Zimbabwe are characterized byhighconcentrations |  | | Journal (article/letter/editorial) | | Kalahari Goldridge deposit, Kraaipan Greenstone Belt, South Africa Received: 1 June 2005 / Accepted: 29 May...Springer-Verlag 2006 Abstract The Kalahari Goldridge Mine is located within the Archaean Kraaipan Greenstone...southwest of Mafikeng in the North West Province, South Africa. The ore body thickness varies from 15 to...mineralisation is associated with two generations of quartz–carbonate veins, dipping approximately 20° to 40°...whereas the second generation consists of large quartz–carbonate veins (group IIB), which locally crosscut |  | | Journal (article/letter/editorial) | | pohwatp@si.edu Siderite Siete Suyos Mine, Atocha-Quechisla District Sud Chichas Province, Potosí Department...species include azurite, pyromorphite, fluorite, quartz, and calcite. Then there are the minerals that...1. Gemmy siderite from Siete Suyos mine, Atocha-Quechisla district, Sud Chichas Province, Potosí Department...pseudomorph siderite include hematite, magnetite, quartz, cacoxenite, calcite, barite, and various chlorite...ROCKS & MINERALS Figure 2. Siderite with quartz, from Mine Hill, Roxbury, Litchfield County, Connecticut |  | | Journal (article/letter/editorial) | | Africa. of Botswana, the northeasternsegment of South The purposes of this paperare, briefly,to consider...+++•+++++++* *++7+++**+ 19 BULAWA¾O-9UBI + 20 FILABUSI -- 21 GWANDA ++++++++++ **+*++7+++++ +•*++++*+++ *+•**+++++++...GREENSTONE BELT LITHOLOGICAL UNITS RHODESIA/BOTSWANA SOUTH AFRICA/SWAZILAND Sedimentary unit ShamraJah Mafic-to-l'el$ic...Swazilandsuccession in the BarbertonMountainLand, South Africa. The distribution of the Lower Ultramafic...ith TABLE the Barberton Stratigraphic Model SOUTH AFRICA Barberton SWAZILAND Belt MOODIES MOODIES |  | | Journal (article/letter/editorial) | | craton of south India is well knownfor its gold mineralizationand mining.Gold occurshere as quartz-carbonate...gold occursin native form in association with quartz Variablewidths(1-60 cm) Trace,0 to ,•1 vol percent...oxidefaciesbandediron-formation by The Kolarschistbelt is a north-south-trending, 80fluidsgenerated frommetamorphic dewatering...depositsand their exploration,our proposedmodel gold quartz veinsindicatethat the vein mineralizafor the origin...Lodes •1-•BIF [ I•ChampmnGnefss :ra::;t'c Gne,sses South Kolar SchfstBelt :..',•Bonded IronFormorion Chompion |  | | Journal (article/letter/editorial) | | by-productgold, of which the bestknown exampleis the Horne mine at Noranda, Quebec.Their high gold content and coregionality...cur- units; thin felsic fragmental strata; small quartz u.s. •rcheon •reenstone••l• 011oø' Vz' Proterozoic...veins,asin the "flow ore body" at the Kerr-Addison mine in Kirkland Lake, Ontario (Bakeret al., 1957; Kishida...(Fleischerand Routhier,1973), and West Africa, and Zimbabwe and for at least three in the newly discoveredHemlo...bodiesof massiveauriferouspyrite as at the AgnicoEagle mine in Joutel,Quebec (Barnettet al., 198œ),andthe Dumagamimine |  | Steadman, Jeffrey A., Large, Ross R. (2016) Synsedimentary, Diagenetic, and Metamorphic Pyrite, Pyrrhotite, and Marcasite at the Homestake BIF-Hosted Gold Deposit, South Dakota, USA: Insights on Au-As Ore Genesis from Textural and LA-ICP-MS Trace Element Studies. Economic Geology, 111 (7) 1731-1752 doi:10.2113/econgeo.111.7.1731 | Journal (article/letter/editorial) | | Marcasite at the Homestake BIF-Hosted Gold Deposit, South Dakota, USA: Insights on Au-As Ore Genesis from...Paleoproterozoic Homestake deposit, northern Black Hills, South Dakota, is the largest banded ironformation (BIF)-hosted...that the volume of upper Poorman Formation in the mine area (approx. 12 km3) could potentially yield ~4...districts. Introduction The Homestake deposit in Lead, South Dakota (Fig. 1a-d), was among the world’s giant...Precambrian and Tertiary lithologies within the mine; (2) other gold deposits of known Tertiary age in |  | | Journal (article/letter/editorial) | | pneumatolytic-hydrothermal (quartz-free disseminated sulfide ores in zones of fault breccia and quartz vein ores in...thick, with which the metamorphic-hydrothermal quartz-vein type of gold mineralization is associated;...accompanied by gold mineralization of the stockwork and quartz-vein types overlie volcanics of basic-ultrabasic...chlorite-talc-serpentine-carbonate and sericite-quartz-carbonaceous schists, amphibole-carbonate rock...epidote-amphibolite facies schists (quartz-biotite ± garnet, albite-muscovite-quartz ± epidote, albite-actinolite |  | Olivo, G. R., Gauthier, M., Williams-Jones, A. E., Levesque, M. (2001) The Au-Pd Mineralization at the Conceicao Iron Mine, ItabiraDistrict, Southern Sao Francisco Craton, Brazil: An Example of aJacutinga-Type Deposit. Economic Geology, 96 (1) 61-74 doi:10.2113/gsecongeo.96.1.61 | Journal (article/letter/editorial) | | Au-Pd Mineralization at the Conceição Iron Mine, Itabira District, Southern São Francisco Craton, Brazil:...3P8 Abstract The Conceição mine, which is located in the Itabira district, southern São Francisco craton...an altered Lake Superior-type iron-formation. The mine sequence consists of three metamorphosed lithostratigraphic...folding. The Conceição orebody consists of a single quartz vein surrounded by jacutinga. The vein is parallel...magnetite, and a finely laminated envelope around the quartz vein, which is composed mainly of Fe hydroxides |  | | Journal (article/letter/editorial) | | komatiitic Thin felsic fragmental-pyroclastic rock Quartz and/or feldspar porphyritic stock: may be sub-volcanic...pyrite, pyrrhotite; coarse visible gold in coarse quartz; spectacular but minor Diverse suite of associated...Vipond Series: decline into Hoyle Falconbridge pit, South Porcupine, Ontario. Fig. 2 (b). Coarse felsic agglomerate...agglomerate, probably a subaqueous pyroclastic flow; south pit rim, Dumagami surface orebody, Cadillac, Quebec...clasts of auriferous pyrite 1422 E drift, Pamour Mine, Timmins, Ontario. 354 R.W. HUTCHINSON Fig. |  | Phillips, G.N., Vearncombe, J.R., Anand, R.R., Butt, C.R.M., Eshuys, E., Groves, D.I., Smith, R.E. (2019) The role of geoscience breakthroughs in gold exploration success: Yilgarn Craton, Australia. Ore Geology Reviews, 112. 103009 doi:10.1016/j.oregeorev.2019.103009 | Journal (article/letter/editorial) | | Australia of Earth Sciences, Stellenbosch University, South Africa. Resource Management Pty Ltd, Box 1093 Canning...to the smaller inset area only. Water Tank Hill mine, Western Australia; magnetite to the left, pyrrhotite...with high-grade gold on the right adjacent to a quartz vein. Silica layers are black (bottom) and near-white...software enabling drilling, geology, structure, mine plans and grade to be portrayed with simple changes...there was existing literature from mine geologists documenting quartz veins in banded iron formation that |  | | Report (volume) | | greenschistfacies metamorphism; the Vermilion district is located within this subprovince, southeast...with the Minnesota Geological Survey, along north-south lines spaced 0.4 km apart at an elevation of 90...WawaShebandowan subprovince which includes the Vermilion district of Minnesota, is a greenstone-granite terrane...and others, 1989). The terrane is bounded on the south by the Rainy Lake-Seine River fault. In the area...north and the Rainy Lake-Seine River fault on the south (fig. 3), the metavolcanic rocks, which Lawson ( |  | | Report (issue) | | GRANDFATHER TENNESSEE ~~ MOUNTAIN KIOKEE BELT SOUTH CAROLINA ug 5; “A BARTLETT'S/.2 FERRY FAULT ? ...Metallogeny Settings of Base and 1 Precious of the South-Central Sulfide Mineralization along Mountain,... for Volcanogenic Appalachians E. Geologic South Sulfide (Thornton The Aspects Carolina Faulkner...Carolina Robert Butler) District, 78 Southernmost at Four Gold Slate Belt Mine, 97 F. Hollister) ...Element Signature of Some Major Dahlonega District, Lumpkin County, Jc., and James R. Burnell, Jr |  | | Book | | ............... . 83 The Fresnillo Ag-Pb-Zn District, Zacatecas, Mexico .............................Massive Sulfide Deposits of the BathurstNewcastle District, New Brunswick, Canada Discussion of Tectonic................... . 4.5.2 The Homestake Gold Mine, South Dakota .. 4.5.3 Pre-Metamorphic Stratiform Gold........ . 4.5.4 Post-Metamorphic Quartz-Rich Vein Ores: The Sigma Mine, Quebec ................ . 4.5.5.............. The Chromite Deposits of Selukwe, Zimbabwe .............................. Discussion ... |  | | Journal (article/letter/editorial) | | Pyromorphite Pyrophyllite Pyroxmangite Pyrrhotite Quartz, lechatelierite, keatite, stishovite, christobalite...double-triangular plot also called Q–A–P–F diagram (quartz, alkaline feldspar, plagioclase, and foid) designed...salinity as a result of devolatilization of subducted South Pennic rocks. During the Paleogene orogeny under...hanging wall. During a subsequent mining period, the mine was re-opened to recover sideritic parts of the...wolframite, tetrahedrite and base metal sulfide quartz veins have successfully been used to constrain | | | Journal (article/letter/editorial) | | Pyromorphite Pyrophyllite Pyroxmangite Pyrrhotite Quartz, lechatelierite, keatite, stishovite, christobalite...double-triangular plot also called Q–A–P–F diagram (quartz, alkaline feldspar, plagioclase, and foid) designed...salinity as a result of devolatilization of subducted South Pennic rocks. During the Paleogene orogeny under...hanging wall. During a subsequent mining period, the mine was re-opened to recover sideritic parts of the...wolframite, tetrahedrite and base metal sulfide quartz veins have successfully been used to constrain |  | | Report (volume) | | SALT LAKE CITY, Utah--Federal Bldg., Rm. 8105,125 South State St. SAN FRANCISCO, California--Customhouse...epithermal quartz-alunite Au, by Byron R. Berger 155 158 Grade and tonnage model of epithermal quartz-alunite...clastic sedimentary rocks 29a Descriptive model of quartz pebble conglomerate Au-U, by Dennis P. Cox 29b...low-sulfide Au-quartz veins, by Byron R. Berger 239 Grade and tonnage model low-sulfide Au-quartz veins, by...rock types 133 Cross section through the Kalavos district Cyprus showing relationship of massive sulfide |  | | Report (issue) | | 5). REFERENCIAS GENERALES Geological Society of South Africa, Special Publication 1 (1969); Economic Geology...EJEMPLOS High Plateau, Del Norte County, USCA Goto Mine, Luzon, PLPN (Wells y otroa, 1946) (LeBlano y Violette...Nombre Ace of Spades Adobe Canyon Gp. Ajax Alice Mine Allan (Johnson) Alta Hill Althouse Alyce and Blue...etc Buttercup Chrome Camden Mine Campbell Camptonville area Castro Mine Cattle Springs Cavyell Horse...Cleopatra Clover Leaf Codd Prospect Coggins Collard Mine Commander Coon Mt. Nos. 1-3 Copper Creek (Low Divide) |  | | Report (issue) | | phenocryst is set in a matrix of microcrystalline quartz. The centre of the phenocryst is occupied by an...an aggregate of sericite (pale grey) and quartz. The dark rim and zones within the pseudomorphed phenocryst...of the Corbet Massive Sulphide Deposit, Noranda District, Quebec, Canada My-eknuckeycand Jo) Watkitisieasenae...Genesis of the Balmat Zinc Deposits, Anderson PC. Mine, Lake Snow Manitoba Lake, 0-25 ly Walford...for Richard Innis, Manager of McIntyre Porcupine Mine in Schumacher, Ontario. There was less specialization |
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