 | | Journal (article/letter/editorial) | | distribution of gold in quartz veins and sulfide ores of the Ashanti mine and other deposits in the Ashanti belt...belt of Ghana: genetic implications Received: 28 September 1995 / Accepted: 11 June 1996 Abstract The Ashanti...belt of Ghana constitutes a gold province which has produced a total of about 1500 t of gold historically...historically. Gold mineralization is found in steep, NNE-SSW to NE-SW trending shear zones predominantly transecting...Ma), and in recent placers. The distribution of gold, its chemistry, paragenesis and mineralogical siting |  | | Journal (article/letter/editorial) | | Characteristics of ore minerals associated with gold at the Prestea mine, Ghana NAPOLEONQ. HAMMOND Geological Institute... Japan Abstract Gold in Early Proterozoic Birimian greenstone at Prestea in Ghana is associated with...tetrahedrite, bournonite, boulangerite and jamesonite. The occurrence of the gold is intimately associated...the major component of sulphosalts associated with gold and occurring in two distinct types. Type I show...As)4S13. The tetrahedrites co-precipitated with gold exhibit ideal characteristics indicating an equilibruim |  | | Journal (article/letter/editorial) | | DEPOSITA 9 Springer-Verlag 1994 Gold mineralization in As-rich mesothermal gold ores of the Bogosu-Prestea...mining district of the Ashanti Gold Belt, Ghana: remobilization of "invisible" gold A.H. Mumin 1, M.E. Fleet...district of southwestern Ghana is a 33 km section of the Early Proterozoic Ashanti Gold Belt. Greenschist facies...and mafic dikes host numerous economic mesothermal gold deposits. Structurally higher ores in the Bogosu...dikes. Most gold occurs as micrometre-size particles in arsenian pyrite, and as "invisible" gold in arsenian |  | Fougerouse, Denis, Micklethwaite, Steven, Ulrich, Stanislav, Miller, John, Godel, Bélinda, Adams, David T., McCuaig, T. Campbell (2017) Evidence for Two Stages of Mineralization in West Africa’s Largest Gold Deposit: Obuasi, Ghana. Economic Geology, 112 (1) 3-22 doi:10.2113/econgeo.112.1.3 | Journal (article/letter/editorial) | | Mineralization in West Africa’s Largest Gold Deposit: Obuasi, Ghana Denis Fougerouse,1,† Steven Micklethwaite...Highway, Crawley, Western Australia 6009, Australia Ashanti Ltd., Assets Development Brownfields, 140 St George...Australia 6009, Australia Abstract The supergiant Obuasi gold deposit is the largest deposit in the Paleoproterozoic...Birimian terranes of West Africa with 62 Moz of gold (past production + resources). The deposit is hosted...of deformation at Obuasi. The D2Ob is the main deformation stage affecting the Obuasi district and corresponds |  | Agangi, Andrea, Reddy, Steven M., Plavsa, Diana, Fougerouse, Denis, Clark, Chris, Roberts, Malcolm, Johnson, Tim E. (2019) Antimony in rutile as a pathfinder for orogenic gold deposits. Ore Geology Reviews, 106. 1-11 doi:10.1016/j.oregeorev.2019.01.018 | Journal (article/letter/editorial) | | Antimony in rutile as a pathfinder for orogenic gold deposits Andrea Agangi, Steven M. Reddy, Diana Plavsa...Antimony in rutile as a pathfinder for orogenic gold deposits, Ore Geology Reviews (2019), doi: https://doi... Antimony in rutile as a pathfinder for orogenic gold deposits Andrea Agangi1,2, Steven M. Reddy1, Diana...Australia aagangi@uj.ac.za Key words: Gold, antimony, orogenic gold deposit, indicator mineral, exploration...applicability of rutile as a pathfinder for orogenic gold deposits, which are an important source of this |  | Fougerouse, Denis, Micklethwaite, Steven, Tomkins, Andrew G., Mei, Yuan, Kilburn, Matt, Guagliardo, Paul, Fisher, Louise A., Halfpenny, Angela, Gee, Mary, Paterson, David, Howard, Daryl L. (2016) Gold remobilisation and formation of high grade ore shoots driven by dissolution-reprecipitation replacement and Ni substitution into auriferous arsenopyrite. Geochimica et Cosmochimica Acta, 178. 143-159 doi:10.1016/j.gca.2016.01.040 | Journal (article/letter/editorial) | | 178 (2016) 143–159 www.elsevier.com/locate/gca Gold remobilisation and formation of high grade ore shoots...February 2016 Abstract Both gold-rich sulphides and ultra-high grade native gold oreshoots are common but...to have relatively low gold solubilities and are unlikely to generate high gold concentrations. The world-class...world-class Obuasi gold deposit, Ghana, has gold-rich arsenopyrite spatially associated with quartz veins...extremely high, localised concentrations of native gold, contained in microcrack networks within the quartz |  | | Journal (article/letter/editorial) | | the Prestea Mesothermal Vein Gold Deposit in the Birimian System of Ghana a Napoleon Q. Hammond & Hidehiko...the Prestea Mesothermal Vein Gold Deposit in the Birimian System of Ghana, International Geology Review...the Prestea Mesothermal Vein Gold Deposit in the Birimian System of Ghana NAPOLEON Q. HAMMOND AND HIDEHIKO...Prestea lode gold deposit occurs in a graphitic shear zone in the Birimian system of Ghana. The Birimian...Proterozoic greenstone assemblage (**« 2100 Ma) with large gold deposits, consisting of a lower unit predominantly |  | | Report (issue) | | 633 Z=4 X-ray Powder Pattern: Giant Yellowknife mine, Canada. 1.999 (100), 3.32 (50), 0.865 (50), 2.97...Group: Pyrite group. Occurrence: In hydrothermal gold-quartz veins, in portions deficient in sulfur and...Association: Gold, freibergite, stibnite, jamesonite, chalcostibite, bournonite, boulangerite, arsenopyrite...Giant Yellowknife mine, Yellowknife, Northwest Territories [TL]; the Chesterville mine, Larder Lake and...and the Hemlo gold deposit, Thunder Bay district, Ontario. At Krásná Hora, near Milesov, Czech Republic |  | | Journal (article/letter/editorial) | | at 07:53 01 January 2015 Bournonite Yaogangxian Mine, Chenzhou, Hunan Province, China T here are certain...clearly the most prolific being the Yaogangxian mine, Hunan Province. (Additional locality information...galena, sphalerite, chalcopyrite, stibnite, boulangerite, zinkenite, tetrahedrite, carbonates, barite...from such disparate localities as the Black Hawk mine, Blue Hill, Maine; New York City, New York; an unspecified...King. It has also been reported from the Albion mine in the Little Cottonwood district, Salt Lake County |  | JIA, YIEFEI, LI, XIA, KERRICH, ROBERT (2001) Stable Isotope (O, H, S, C, and N) Systematics of Quartz Vein
Systems in the Turbidite-Hosted Central and North Deborah Gold Deposits of
the Bendigo Gold Field, Central Victoria, Australia: Constraints on the Origin
of Ore-Forming Fluids. Economic Geology, 96 (4) 705-721 doi:10.2113/gsecongeo.96.4.705 | Journal (article/letter/editorial) | | Turbidite-Hosted Central and North Deborah Gold Deposits of the Bendigo Gold Field, Central Victoria, Australia:...North Deborah gold deposits are located in one of 15 mining centers of the Bendigo gold field, central...Australia, a major world-class gold province developed in a turbidite terrane. Gold mineralization occurs primarily...stages 1, 2, and 4 are gold-bearing, whereas stages 3, 5, and 6 are barren. Gold-related quartz veins were...inferred from fluid inclusions. The δ18O values of gold-bearing vein quartz and coexisting hydrothermal |  | | Catalog/List | | sunbust effect , cut and polished slab 2.5 xl .5 Mine de L' Etoile Congo £20 3. LEPIDOLITE, choice display...NATIVE SILVER thin sheet about lxl.5 inches La Noria mine, San Martin, Zacatecas Mexico £15 , 16. NATIVE COPPER...nice Ix 2.5 inch exposed cleavage surface. Mission Mine, Pima County, Arizona USA £25 17. GRAPHITE, pure...up well for display. interesting location Niobec Mine, Quebec, Canada £25 19. PYRITE a very sharp 2cm...CALLAGHANITE dark blue coating on lxl, fairly rich Premier Mine, Gabbs, Nye County, Nevada £6 30. GYROLITE good |  | | Journal (article/letter/editorial) | | zoning of sulfides and quartz at Sheba and Fairview gold mines: Clues to Mesoarchean mineralisation in the...Available online 30 August 2013 Keywords: Mesothermal gold Pyrite Arsenopyrite Archean Barberton Greenstone...The Fairview and Sheba mines are two of the major gold mines in the Paleoarchean Barberton Greenstone Belt...mines, gold is associated with quartz–carbonate ± rutile veins and occurs both as “invisible” gold finely...ore formation and Au mineralisation. At Fairview mine, three stages of pyrite formation were identified |  | | Journal (article/letter/editorial) | | Article Mineralogy of the Boroo Gold Deposit in the North Khentei Gold Belt, Central Northern Mongolia...Boroo gold deposit in the North Khentei gold belt of Mongolia were studied to characterize the gold mineralization...crystallization processes of the ore minerals. The gold deposit consists of low-grade disseminated and stockwork...trace amounts of bournonite, boulangerite, geerite, alloclasite, native gold, and electrum. The ore minerals...grain size. Four modes of gold occurrence are recognized: (i) “invisible” gold in pyrite and arsenopyrite |  | | Catalog/List | | Quarry, Santa Cruz County, California, CREEDITE Hall Mine,Tonopah.Nyc County,Ncvada. U S.A 1142 ■ MENEGHINITE...PICKERINGITE JosefMine, Dubnik,Slovakia 761 Bambolla Mine. Moctezuma. Mexico EMMONSITE 104 Creamy coloured...Laranjeiras,Minas Gcrais I 1022 ■ PYROLUSITE lmini Mine, Quarazatc Province Morocco 157 Good coverage of...lx2 £12 ----·-··-· -------------------------Jocao Mine, Galilcia, Minas Gerias,Brazil 862 ■■TUNISITE Condorcct...Sh etlands, Scotland 1128 ALSTONITE Fall owlicld Mine, No rt humb erland 10 6 E xcellen t rich white cr |  | | Journal (article/letter/editorial) | | of various Sb sulphosalt minerals, including boulangerite, semseyite, tetrahedrite and bournonite. A detailed...Sphalerite which recrystallised in situ and boulangerite which formed by reactive replacement of primary...overprinting ¯uid to form Sb-rich sulphosalts, mainly boulangerite, bournonite, semseyite and tetrahedrite. Most...wall-rock fragments, recrystallised galena, boulangerite and gangue minerals (Fig. 3b). Compared to primary...recrystallised coarse-grained galena with ®brous boulangerite and sphalerite Extensively overprinted portion |  | | Journal (article/letter/editorial) | | Central and North Deborah Deposits of the Bendigo Gold Field, Central Victoria, Australia Y. JIA,† Department...S7N 5E2 Abstract The Central and North Deborah gold deposits, with a production of about 7 tons Au,...Bendigo gold field, central Victoria, Australia, an important mesothermal lode gold province. The gold-bearing...influenced gold deposition (Cox et al., 1995). Hydrothermal ore-forming fluids responsible for gold mineralization...pure CH4, through mixed CH4 and CO2, to pure CO2. Gold ore-forming fluids were weakly acidic, with fO2 |  | | Journal (article/letter/editorial) | | on the polychronous nature of the giant Muruntau gold deposit from wall-rock alteration and ore paragenetic...on the polychronous nature of the giant Muruntau gold deposit from wall-rock alteration and ore paragenetic...on the polychronous nature of the giant Muruntau gold deposit from wall-rock alteration and ore paragenetic...in north-central Uzbekistan is one of the biggest gold deposits in the world with 45200 t of contained...KEY WORDS: intrusion-related gold, Muruntau, ore genesis, orogenic gold, Paleozoic, Uzbekistan. INTRODUCTION |  | Cave, Ben J., Barnes, Sarah-Jane, Pitcairn, Iain K., Sack, Patrick J., Kuikka, Helena, Johnson, Sean C., Duran, Charley J. (2019) Multi-stage precipitation and redistribution of gold, and its collection by lead-bismuth and lead immiscible liquids in a reduced-intrusion related gold system (RIRGS); Dublin Gulch, western Canada. Ore Geology Reviews, 106. 28-55 doi:10.1016/j.oregeorev.2019.01.010 | Journal (article/letter/editorial) | | Multi-Stage Precipitation and Redistribution of Gold, and its Collection by Lead-Bismuth and Lead Immiscible...Immiscible Liquids in a Reduced-intrusion Related Gold System (RIRGS); Dublin Gulch, Western Canada Ben...Multi-Stage Precipitation and Redistribution of Gold, and its Collection by Lead-Bismuth and Lead Immiscible...Immiscible Liquids in a Reduced-intrusion Related Gold System (RIRGS); Dublin Gulch, Western Canada, Ore... Multi-Stage Precipitation and Redistribution of Gold, and its Collection by Lead-Bismuth and Lead Immiscible |  | | Conference Proceedings (Volume) | | Cover photograph: View of the Aitik open pit copper mine in the very north of Sweden. Mining operations started...copper, 51 700 tonnes of silver and 1,9 tonnes of gold. Photo: Olof Martinsson, Luleå University of Technology...Petrology of low-sulphide PGE ores of the Norilsk region ................................................Norman Pearson, Jan Kramers & Dmitry Kuzmin Orogenic gold deposits .. ................................................................... 1085 The orogenic gold mineral system . . ............................ |  | Ford, A., Hagemann, S.G., Fogliata, A.S., Miller, J.M., Mol, A., Doyle, P.J. (2015) Porphyry, epithermal, and orogenic gold prospectivity of Argentina. Ore Geology Reviews, 71. 655-672 doi:10.1016/j.oregeorev.2015.05.013 | Journal (article/letter/editorial) | | com/locate/oregeorev Porphyry, epithermal, and orogenic gold prospectivity of Argentina A. Ford a,b,⁎, S.G. Hagemann...May 2015 Available online xxxx Keywords: Argentina Gold Prospectivity mapping a b s t r a c t This paper...the significant porphyry, epithermal, and orogenic gold districts in Argentina, including the tectonic,...models are developed for epithermal and orogenic gold systems, in order to produce GIS-based prospectivity...maps were generated for epithermal and orogenic gold mineralization in Argentina. The results of the |  | Ribeiro, Yuri, Figueiredo e Silva, Rosaline C., Lobato, Lydia M., Lima, Luiz Claudio, Rios, Francisco J., Hagemann, Steffen G., Cliff, John (2015) Fluid inclusion and sulfur and oxygen isotope studies on quartz-carbonate-sulfide veins of the Carvoaria Velha deposit, Córrego do Sítio gold lineament, Quadrilátero Ferrífero, Minas Gerais, Brazil. Ore Geology Reviews, 67. 11-33 doi:10.1016/j.oregeorev.2014.10.032 | Journal (article/letter/editorial) | | of the Carvoaria Velha deposit, Córrego do Sítio gold lineament, Quadrilátero Ferrífero, Minas Gerais...2014 Available online 18 November 2014 Keywords: Gold mineralization Fluid inclusions Quadrilátero Ferrífero...NE-SW-trending ductile shear zones, which controls fourteen gold deposits, including the Carvoaria Velha deposit...Archean Rio das Velhas greenstone belt, which host gold mineralization. Metamafic dikes and sills are parallel...sericite, besides sulfides and sulfosalts. The main gold mineralization styles at the Carvoaria Velha deposit |  | | Journal (article/letter/editorial) | | Manuscript Tectono-magmatic controls of post-subduction gold mineralisation during late Caledonian soft continental...Hursthouse, Tectono-magmatic controls of post-subduction gold mineralisation during late Caledonian soft continental... 1 Tectono-magmatic controls of post-subduction gold mineralisation during late Caledonian soft continental...several economically significant gold occurrences, including a 45 km-long gold trend in central Ireland that...at Clontibret. However, the region is relatively underexplored for gold and the well-constrained geology |  | | Journal (article/letter/editorial) | | architecture: tectonic foundations for East Asian orogenic gold Craig J. R. Hart1, Richard J. Goldfarb2 1 Mineral...USA Orogenic gold systems comprise the largest number of gold deposits and greatest gold endowment of...settings that do not fit current models for orogenic gold deposits. These uncertainties conspire to cause...sources regarded to be integral to the orogenic gold deposit model. The vast landmass of Eastern Asia...activity and overprinted by episodic magmatism. Gold deposits and districts formed preferentially in |  | 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) | | represents one of few Archean gold provinces in the world hosting gold deposits associated with massive...stage 2, and a low-grade Sb-bearing stage 3. Four gold deposits within the Kwekwe district have been studied...Globe and Phoenix gold deposits display typical features of Archean orogenic lode gold systems such as...kbars. In contrast, gold mineralization at Jojo and especially the Indarama gold deposits probably formed...Indarama, microthermometric studies indicate stibnite-gold mineralization at temperatures between 120° and |  | | Book | | hundred kilometers. Most of them orbit the Sun in a region called the asteroid belt, which is between the...bright metallic luster and opaqueness of metals. Gold and copper absorb and re-emit orange to red colors...mineral pigments. LEFT: Malachite, Bwana M’Kubwa Mine, Ndola, Copperbelt, Zambia * 22 x 26 x 16 cm 22...Namibia * 20 x 18 x 14 cm Bladed stibnite, Ichinokawa Mine, Saijo, Shikoku, Japan * 10 x 1 x 1 om Acicular...Brazil * 5 x 3 x 0.6 cm Platy muscovite, José Pinto Mine, Jaguaracu, Minas Gerais, Brazil * 12 x 19 x 6 cm |
|
