 | | Journal (article/letter/editorial) | | Springer-Verlag 1994 Gold mineralization in As-rich mesothermal gold ores of the Bogosu-Prestea mining district...district of the Ashanti Gold Belt, Ghana: remobilization of "invisible" gold A.H. Mumin 1, M.E. Fleet 1, and...1994 Abstract. The Bogosu-Prestea mining district of southwestern Ghana is a 33 km section of the Early...Early Proterozoic Ashanti Gold Belt. Greenschist facies carbonaceous and carbonate-bearing turbidites...and mafic dikes host numerous economic mesothermal gold deposits. Structurally higher ores in the Bogosu |  | Mil�si, J.P., Ledru, P., Ankrah, P., Johan, V., Marcoux, E., Vinchon, Ch. (1991) The metallogenic relationship between Birimian and Tarkwaian gold deposits in Ghana. Mineralium Deposita, 26 (3) doi:10.1007/bf00209263 | Journal (article/letter/editorial) | | relationship between BMmian and Tarkwaian gold deposits in Ghana J.P. Mil~si 1, p. Ledru 1, p. Ankrah z...GeologicalSurvey Department, PO Box M. 80, Accra, Ghana Received: November 14, 1989/Accepted: December 12...traditional concept of the Early Proterozoic gold deposits in Ghana i.e. gold-bearing shear zones overlain by Tarkwaian...Tarkwaian paleoplacers containing reworked gold derived from the shear-zones - needs to be reconsidered...reconsidered in the light of recent research in Ghana, the Ivory Coast and French Guiana. This research has revealed |  | | Journal (article/letter/editorial) | | Proterozoic Birimian Supergroup of Ghana and Some Aspects of its Associated Gold Mineralization ALFRED LEUBE...2Geological Survey Department, Box M80, Accra (Ghana) Abstract Leube, A., Hirdes, W., Mauer, R. and...Proterozoic Birimian Supergroup of Ghana and some aspects of its associated gold mineralization. Precambrian..._+66 Ma) form part of the West African craton. Ghana contains the eastern portion of the Birimian terrane...chemistry ), characterize the Birimian Supergroup of Ghana. The belts are separated by basins containing isoclinally |  | Lawrence, D. M., Treloar, P. J., Rankin, A. H., Harbidge, P., Holliday, J. (2013) The Geology and Mineralogy of the Loulo Mining District, Mali, West Africa: Evidence for Two Distinct Styles of Orogenic Gold Mineralization. Economic Geology, 108 (2) 199-227 doi:10.2113/econgeo.108.2.199 | Journal (article/letter/editorial) | | Africa: Evidence for Two Distinct Styles of Orogenic Gold Mineralization DAVID M. LAWRENCE†,1,*, PETER J....JE2 4WJ Abstract Loulo is a world-class orogenic gold mining district in the Birimian terrane of western...shear zone, with gold mineralization largely linked to a transtensional event. The mine camp is divided...divided into two distinct styles of gold deposit on the basis of differing geologic characteristics. One group...tourmalinization (pre-, syn- and postmineralization). Gold lodes are Fe-rich (dominated by nickeloan pyrite) |  | Lambert-Smith, James S., Allibone, Andrew, Treloar, Peter J., Lawrence, David M., Boyce, Adrian J., Fanning, Mark (2020) Stable C, O, and S Isotope Record of Magmatic-Hydrothermal Interactions Between the Falémé Fe Skarn and the Loulo Au Systems in Western Mali. Economic Geology, 115 (7). 1537-1558 doi:10.5382/econgeo.4759 | Journal (article/letter/editorial) | | Park Place, Cardiff, CF10 3AT, United Kingdom Gold (Holdings) Ltd, 3rd Floor, Unity Chambers, 28 Halkett...the ultimate source of the ore fluids in orogenic gold deposits, with the metals scavenged from the same...sedimentary rocks, ca. 2200-2160 Ma Damang Prestea, Bogoso 0º -10º Chirano Birimian sedimentary basins...2135-2100 Ma Archean rocks, Kenema-Man Domain Gold deposit size skarn Eburnean basin orogenic Eoeburnean...data Exploration targets 235E 230E 225E Au mine Gefa Faults, fractures and shear zones from drilling |  | 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 |  | Sung, Y.-H., Brugger, J., Ciobanu, C. L., Pring, A., Skinner, W., Nugus, M. (2009) Invisible gold in arsenian pyrite and arsenopyrite from a multistage Archaean gold deposit: Sunrise Dam, Eastern Goldfields Province, Western Australia. Mineralium Deposita, 44 (7) 765-791 doi:10.1007/s00126-009-0244-4 | Journal (article/letter/editorial) | | ARTICLE Invisible gold in arsenian pyrite and arsenopyrite from a multistage Archaean gold deposit: Sunrise...Sunrise Dam gold mine (11.1 Moz Au) is the largest deposit in the Archaean Laverton Greenstone Belt (Eastern...whereas arsenopyrite contains up to 5,767 ppm (n=19). Gold in arsenopyrite (D4a stage) was coprecipitated and...brugger@adelaide.edu.au M. Nugus Sunrise Dam Gold Mine, AngloGold Ashanti Australia Ltd, Laverton, Western Australia...Seoul 156-706, South Korea remained as “invisible gold” (nanoparticles and/or latticebound) during subsequent |  | Cook, N. J., Ciobanu, C. L., Meria, D., Silcock, D., Wade, B. (2013) Arsenopyrite-Pyrite Association in an Orogenic Gold Ore: Tracing Mineralization History from Textures and Trace Elements. Economic Geology, 108 (6) 1273-1283 doi:10.2113/econgeo.108.6.1273 | Journal (article/letter/editorial) | | Arsenopyrite-Pyrite Association in an Orogenic Gold Ore: Tracing Mineralization History from Textures...Proterozoic orogenic gold deposit, Tanami gold province, northcentral Australia. Gold distribution patterns...remobilization of that Au following brittle fracture. Gold expelled from the sulfide lattice during the remobilization...took place. Residual concentrations of invisible gold (in grain centers) are <5 ppm in arsenopyrite and...remobilized gold is accompanied by fine particles (200 nm–2 μm) and nanoparticles (<200 nm) of gold. The extensive |  | Neyedley, Kevin, Hanley, Jacob J., Fayek, Mostafa, Kontak, Daniel J. (2017) Textural, Fluid Inclusion, and Stable Oxygen Isotope Constraints on Vein Formation and Gold Precipitation at the 007 Deposit, Rice Lake Greenstone Belt, Bissett, Manitoba, Canada. Economic Geology, 112 (3) 629-660 doi:10.2113/econgeo.112.3.629 | Journal (article/letter/editorial) | | Vein Formation and Gold Precipitation at the 007 Deposit, Rice Lake Greenstone Belt, Bissett, Manitoba...Abstract The 007 gold deposit is located within the 2.99–2.70 Ga Rice Lake greenstone belt, Manitoba, Canada...inclusions were trapped during the growth of Q1 (prior to gold deposition), the common occurrence of texturally...suggests that these fluids are likely related to gold deposition. In situ oxygen isotope analysis of barren...flow-through system. An approximate P-T window of gold deposition is constrained using fluid inclusion |  | Hagemann, Steffan G., Brown, Philip E., Ridley, John, Stern, Peter, Fournelle, John (1998) Ore petrology, chemistry, and timing of electrum in the Archean hypozonal Transvaal lode gold deposit, Western Australia. Economic Geology, 93 (3) 271-291 doi:10.2113/gsecongeo.93.3.271 | Journal (article/letter/editorial) | | grainsandareinterpreted to haveformedfromsubmicroscopic gold released fromloellingite duringhigh-temperature...areevidence forprocesses thatoccurred afterthe main,gold-depositing hydrothermal • Corresponding author:...RegionalGeologicSetting The SouthernCrossgreenstone belt is locatedin the MOSTcasestudies onArchcan lodegolddeposits...(Gebre-Mariam et al., 1995).In manyof thesedeposits gold as of tholeiitic-komatiitic volcanic rocks and minor...astothefluidsource responsible forgoldmineralgreenstone belt is poorly exposed due to extensive laterite ization |  | Xu, Lin-Gang, Kong, Zhi-Gang, Qu, Jian-Fei, Li, Bao-Long, Qiu, Zhi-Yin, Olin, Paul, Danyushevsky, Leonid (2020) Metallogenic model of the Jinchang Au-Ni deposit in the Ailaoshan belt, SW China, determined on the basis of pyrite trace element contents, in-situ sulfur isotope composition and PGE geochemistry. Ore Geology Reviews, 120. 103415 doi:10.1016/j.oregeorev.2020.103415 | Journal (article/letter/editorial) | | model of the Jinchang Au-Ni deposit in the Ailaoshan belt, SW China, determined on the basis of pyrite trace...model of the Jinchang Au-Ni deposit in the Ailaoshan belt, SW China, determined on the basis of pyrite trace...model of the Jinchang Au-Ni deposit in the Ailaoshan belt, SW China, determined on the basis of pyrite trace...xulingang@cugb.edu.cn) Abstract The Ailaoshan metallogenic belt in southwestern China contains numerous shear zone-related...deposit in the northern segment of the Ailaoshan belt for detailed investigation of pyrite chemistry and |  | | Journal (article/letter/editorial) | | are indicative of the progressive increase of the gold concentration with the evolution of the shear zone..."invisible" gold, an intermediate stage with finegrained gold, and a late stage with gold nuggets. The...sulfidation. Gold is first fixed in the crystal lattice of pyrrhotite (up to 30 ppm of gold), disseminated...during the second episode of this early stage and the gold thus freed is trapped in the lattice of locally...ferriferous sulfides: pyrite, arsenopyrite (up to 1.6 wt% gold), and berthierite. At the intermediate stage, again |  | Sazonov, Anatoly M., Silyanov, Sergey A., Bayukov, Oleg A., Knyazev, Yuriy V., Zvyagina, Yelena A., Tishin, Platon A. (2019) Composition and Ligand Microstructure of Arsenopyrite from Gold Ore Deposits of the Yenisei Ridge (Eastern Siberia, Russia) Minerals, 9 (12) 737 doi:10.3390/min9120737 | Journal (article/letter/editorial) | | Composition and Ligand Microstructure of Arsenopyrite from Gold Ore Deposits of the Yenisei Ridge (Eastern Siberia...major gold deposits of the Yenisei Ridge (Eastern Siberia, Russia). Arsenopyrite and native gold are paragenetic...the ore; meanwhile, arsenopyrite is frequently a gold carrier. We detected iron positions with variable...formation. It was identified that the increased gold concentrations are typical for arsenopyrites with...non-equal positions; Mössbauer Effect; gold; “invisible” gold; gold ore deposits 1. Introduction Arsenopyrite |  | Gunn, A.G., Dorbor, J.K., Mankelow, J.M., Lusty, P.A.J., Deady, E.A., Shaw, R.A., Goodenough, K.M. (2018) A review of the mineral potential of Liberia. Ore Geology Reviews, 101. 413-431 doi:10.1016/j.oregeorev.2018.07.021 | Journal (article/letter/editorial) | | range of metals and industrial minerals, including gold, iron ore, diamonds, base metals, bauxite, manganese...manganese, fluorspar, kyanite and phosphate. Known gold deposits, mostly orogenic in style, occur widely...associated with north-east-trending regional shear zones. Gold mining commenced at the New Liberty deposit in western...western Liberia in 2015, while significant gold resources have also been identified at several other...of iron ore is currently restricted to a single mine, Yekepa, in the Nimba Range. Other important deposits |  | Acosta-Gongora, P., Gleeson, S. A., Samson, I. M., Ootes, L., Corriveau, L. (2015) Gold Refining by Bismuth Melts in the Iron Oxide-Dominated NICO Au-Co-Bi ( Cu W) Deposit, NWT, Canada. Economic Geology, 110 (2) 291-314 doi:10.2113/econgeo.110.2.291 | Journal (article/letter/editorial) | | ECONOMIC GEOLOGISTS Vol. 110 March–April No. 2 Gold Refining by Bismuth Melts in the Iron Oxide-Dominated...observed in arsenopyrite II. The second mechanism of gold refining is explained by the occurrence of contemporaneous...hydrothermal fluids that also could have fractionated gold during transport in solution and deposited it in...Ca-Fe-amphibole-magnetite-biotite-altered rocks. Overall, the gold upgrading at NICO is consistent with the liquid...on gold concentration in this and potentially other Au-Bi-Te-Fe-As-S-rich iron oxide-copper-gold (IOCG) |  | | Journal (article/letter/editorial) | | 241–277 Gold Remobilization: Insights from Gold Deposits in the Archean Swayze Greenstone Belt, Abitibi...Jerome and Kenty, in the Archean Swayze greenstone belt of northern Ontario, Canada, together with archived...high-grade Au deposits from the Abitibi greenstone belt across Ontario and Quebec, were geochemically characterized...upgrading of Au that is widely applicable to orogenic gold settings. Data for the Jerome deposit indicate that...development coincident with the presence of native gold and accessory sulfide phases, that are strongly |  | | Report (issue) | | conglomerates of the Koli Area, Eastern Finland ............... 189 O. Äikäs, R. Sarikkola GHANA The mineralized...mineralized quartz-pebble conglomerates of Ghana ............................................... 235 W. Vogel SOUTH...Paleocurrent and lithological faciès control of uranium and gold mineralisation in the Witwatersrand Carbon Leader...J.D. Carter, R.D. Gee Sedimentology, origin and gold potential of the Late Archean Lalla Rookh Basin...presence of uraninite does not justify rejection of an area if other favorable characteristics are present. |  | | Journal (issue) | | RESIDUES Containing GOLD, SILVER, PLATINUM, COPPER, TIN, ZINC, LEAD REFRACTORY GOLD CONCENTRATES etc..... • • • • • • 76 Cyprus • Nigeria • Gold Coast . Sierra Leone Federation • of Malaya...consequence of larger shipments of bauxite and gold; Gold Coast (£1 ·2 million), where the value of manganese...SeychellesMauritius Ridge by Fairbridge ( I 948), see Fig. 1. The area of Mauritius is 730 square miles. MAURITIUS ••...quarter-degree areas in north-east Kenya, but work on a fifth area at the Coast has been suspended temporarily. Other |  | | Journal (volume) | | (') ; the leliers (;«.Gold til 2'itl Acetylene as a precipitant Africa, Portuguese...Quebec Report Ashanti Goldfields Corporation Ashanti Goldfields, Developments at Ashanti Goldfields Metallurgy...Balaghat, Developments at Depth Report Balaghat Gold Mines {m.d.) Ball Bearings in Mining {m.d.) BaUarat...Foundations, Repairing Bauer Process tor extracting Gold from Sea Water C. S. Fox .... Bauxite Resources...J M., on Keeley Mine Bengal Iron Company's New Capital {m.d.) .... Bentong Tin Mine, Dredging at Report |  | | Journal (issue) | | RESIDUES Containing GOLD, SILVER, PLATINUM, ZINC, LEAD COPPER, TIN, REFRACTORY GOLD CONCENTRATES etc...• • • • • 151 • • Nigeria. • • I • Gold Coast • • • • • • • • • • • • • •...• • • • • • • Geological Map of Marshall's Hall Area, Jamaica ,, 118 118 '' page 120 • • . facing...• • ,, 129 Plate III Topography of Woodford Area • • • ,, 129 Plate IV Woodford Fault, SE... of silica are available in the Marshall's Hall area of Jamaica. The ore occurs in veins of variable |  | | Journal (issue) | | RESIDUES Containing GOLD, SILVER, PLATINUM, COPPER, TIN, ZINC, LEAD REFRACTORY GOLD CONCE'NTRATES etc... 78 Nigeria . • • • • • • • • • 80 Gold Coast . • • • • • • • 81 • • • • •...provided. It may happen, however, that an orogenic belt is composite and that two or more cycles or sub-cycles...of the belt. The Appalachian belt is a well-known example of this kind, and the Mozambiquian belt is suspected...related to kimberli te. Trachyandesite,Alto Zambezi area of Angola-(helium 12) apparent age (provisional |  | | Book (volume) | | Ol’ga V. Bobrova and Evgeny G. Sidorov Mustard Gold of the Gaching Ore Deposit (Maletoyvayam Ore Field...Selivanova Mustard Gold in the Oleninskoe Gold Deposit, Kolmozero–Voronya Greenstone Belt, Kola Peninsula...Characteristics of Supergene Gold of Karst Cavities of the Khokhoy Gold Ore Field (Aldan Shield, East...Composition and Ligand Microstructure of Arsenopyrite from Gold Ore Deposits of the Yenisei Ridge (Eastern Siberia...of Two Type Orebodies from the Nibao Carlin-Type Gold Deposit, Guizhou, China Reprinted from: Minerals |
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