 | | 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 with arsenopyrite...tetrahedrites at Prestea constitute the major component of sulphosalts associated with gold and occurring...As)4S13. The tetrahedrites co-precipitated with gold exhibit ideal characteristics indicating an equilibruim |  | | Journal (article/letter/editorial) | | Formation at the Prestea Mesothermal Vein Gold Deposit in the Birimian System of Ghana a Napoleon Q. Hammond...Formation at the Prestea Mesothermal Vein Gold Deposit in the Birimian System of Ghana, International Geology...Formation at the Prestea Mesothermal Vein Gold Deposit in the Birimian System of Ghana NAPOLEON Q. HAMMOND...Abstract The Prestea lode gold deposit occurs in a graphitic shear zone in the Birimian system of Ghana. The...Proterozoic greenstone assemblage (**« 2100 Ma) with large gold deposits, consisting of a lower unit predominantly |  | | Book | | Ver' "\ ~~ • THE MINERAL AND ROCK RESOURCES OF GHANA f btYON RALPH Dedicated to my parellfs for not...ISBN 90 6191 597 X paper edition only for sale in Ghana © 1985 A.A.Balkema, P.O.Box I 675, 3000 BR Rotterdam...REPUBLIC OF GHANA- GEOGRAPHY,PHYSIOGRAPHY,GEOLOGY AND GEOHYDROLOGY 6 3. THE MINERALRESOURCESOF GHANA - BACKGROUND...EXPLOITATION IN GHANA 572 12. TABLES OF SUMMARY OF MINERAL AND ROCK RESOURCESOF GHANA 577 13. LEGISLATION...590 APPENDIX 597 INDEX 602 V Preface The Ghana Geological SuJ;"vey DepaJ;"tment in 1.962, published |  | 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) |  | | 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 |  | 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 |  | | Journal (article/letter/editorial) | | G. Ryan Invisible gold in ore and mineral concentrates from the Hillgrove gold-antimony deposits, NSW...Vein-hosted mesothermal stibnite-gold mineralisation at the Hillgrove Au-Sb mine in northeastern New South Wales...50±55% of the gold produced at Hillgrove occurs invisibly in arsenopyrite and pyrite. Gold losses of 20%...little invisible gold, but minor Fe, As, Ag, Cu and Pb. The precipitation of invisible gold in arsenopyrite...stage of stibnite and gold deposition. Introduction Gold-bearing ores contain gold hosted in various mineralogical |  | 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 |  | | Journal (volume) | | PAGE PAGE Report Report Abbontiakoon Mines Abosso Gold 118 370 Broken Brown. South Coggin 14 Accounts...Minerals Separation Plant at 60 Report Antelope Gold Mine (m.d.) .... 241 Antimony Ores in Rhodesia 131...moves office to Geneva 196 Areaehap Copper & Sulphur Mine 184 Report Arizona Copper 53 (m.d.) Arsenic. Collecting... 323 Ashanti Gold Mine ol A. M. Matheson (m.d.) Assavs of Complex Tin Ores 119 Associated Gold ilines...Boston Creek Gold Deposits 258 Bradford's Flotation Process *195, 256, 287, 314, 321 Brakpan Area, New 120 |  | | Journal (volume) | | Report. 392 Ashanti Rivers and Concessions 305 {c.l.) .... Ashio Mine, Japan 154 Associated Gold Mines of...Developments 118 Auckland Letter Abosso Gold Accounts, Gold Mine Africa, In South Central Air-Blasts on...Report Hill Proprietary Hill Proprietary's Iron Mine Hill, Hill, . . ... {c.l.) {p.t.) British...Burma Mines Burma Ruby Mines Burnham M. H Modem Mine 264 *230 Report. *230 Report. Valuation 383, 441...Cemented Ore Ernest Williams .... 437 Centenillo Lead Mine 401 Central Chile Copper Report .... *233 Central |  | | Journal (volume) | | Arizona Strike *257 W. R. Feldtmann Ashanti Gold IMines 127 Ashanti Goldfields Corporation Report. 124...Australian Metal Position H. R. Sleeinan. 33 Australian Mine Tax . . . . . . . . *206 47 247 Report...Boovsens 126 218 Boston Creek, Ontario Bradeu Copper Mine, Smelting at. (m.d.) ... 117 344 Bragg. W. H X-rays...110 {m.d.) .... Balaghat Developments Balaghat Gold . ; . . .- . . . . . Hill, Xorth ....Institute and a Charter Canadian Mine Taxes 187, F. H. Hamilton. Canadian Mine Taxes Cape Copper Report .. |  | | 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 |  | | Journal (volume) | | Analysis, Technical Methods of Ore 256 Report Anantapur Gold Field Aramayo Francke Mines Arizona Copper Co Arizona...Asbestos in Australia Ashanti Goldfields Asia, Eastern, Oil in Associated Gold Mines of West Australia...Australia Australian Gold for America 138, 202, 3.30 7-1 122 177 56 381 375 328 187 320 264 (m.d.) (m.d.)...Equatorial Oil Company Guiana, Gold Mining in Minerals, Study of Platinum it Gold Corporation (m.d.) (m.d...Position at Dolly Varden Litigation Dolly Varden Mine, History of Dolmaee, V Dome Mining Corporation |  | | Journal (volume) | | Antelope Mine to close (m.d.) Arsenic, Estimation of Ashanti Goldfields Corporation Ashanti Goldfields...Goldfields Shaft Accident Associated Gold Mines Associated Nigeria Tin Mines Astronomy for Surveyors R. W. Chapman...200 375 326 7 200 49 Guiana Outputs Platinum and Gold Corporation South Africa Co.'s Claim South Africa...Report 9 75 127 200 Brakpan Progress Brandlehow Mine Jumbil and Trevascus Bullen, F. Bullfinch Proprietary...288 9 China Clay Deal China Clay Industry China, Gold-Washing Chrome in Maryland Chromite in America |  | Vikentyev, Ilya, Vikent’eva, Olga, Tyukova, Eugenia, Nikolsky, Maximilian, Ivanova, Julia, Sidorova, Nina, Tonkacheev, Dmitry, Abramova, Vera, Blokov, Vyacheslav, Spirina, Adelina, Borisova, Diana, Palyanova, Galina (2021) Noble Metal Speciations in Hydrothermal Sulphides. Minerals, 11 (5) 488 doi:10.3390/min11050488 | Journal (article/letter/editorial) | | 2021 Abstract: A significant part of the primary gold reserves in the world is contained in sulphide ores...ores, many types of which are refractory in gold processing. The deposits of refractory sulphide ores...main potential source of gold production in the future. The refractory gold and silver in sulphide ores...metals (NM) not thoroughly investigated. For gold and gold-bearing deposits of the Urals, distribution...various forms of invisible gold—which includes nanoparticles and chemically bound gold—in sulphides is discussed |  | | Book | | The Metallogeny of Lode Gold Deposits A Syngenetic Perspective Ulrich Kretschmar (Late) Former President...strongly in the theory of the syngenetic process in gold deposits. Laura Carter Kretschmar March 2015 I obtained...the Haileybury School of Mines and graduated as a gold medallist in 1965. From there I attended Queen’s...was graphitic schists in the Abitibi greenstone belt, which at that time were showing up during regional...place in the tectonic evolution of a greenstone belt. While teaching at St Francis Xavier University |  | | Journal (volume) | | Tin Mining in Bolivia. Coal Alining in Montana. Gold in Montana. Ainsworth, Samuel Colcord, F. F. Lyons...Manager, Co., New York. State Engineer and Ex-officio Mine Inspector, Bismarck, N. D. Collins, George Coal...Mining Engineer, Denver, Colo. Copper in Colorado. Gold in Colorado. Lead in Colorado. Atwater, C. G. Engineer... V. N. Metallurgical Engineer, Denver, Colo. Gold in South Dakota. State Geologist, Lincoln, Neb...City, Utah. Douglas, James Gold in Utah. Lead in Utah. Chief State Mine Inspector, Hartford, Ark. Coal |  | | Journal (volume) | | Mitchell, B.Sc. , F.G.S., Geological Survey Department, Gold Coast 182 Geological Reconnaissance of Parts of...Somaliland . Bechuanaland Swaziland Federation of Nigeria Gold Coast . Sierra Leone Federation of Malaya British...463 464 COLONIAL GEOLOGICAL ABSTRACTS Part 10. - Gold Coast Part 11. - Sierra Leone . 92 217 CHEMICAL...Ring · facing p. Location Map of Chambe Plateau Area . Outline Map showing Outcrops of four suggested...Geological Survey Camp, Malaya Plate III Alluvial Gold Mining, Tanganyika Plate IV Dry - blower, Tanganyika |  | | Book (volume) | | Jixiang Sui Geochemistry of Tourmaline from the Laodou Gold Deposit in the West Qinling Orogen, Central China:...Polufuntikova and Lyudmila Yu. Kryuchkova Disseminated Gold–Sulfide Mineralization in Metasomatites of the Khangalas...Khangalas Deposit, Yana–Kolyma Metallogenic Belt (Northeast Russia): Analysis of the Texture, Geochemistry...Kardashevskaia Types of Tellurium Mineralization of Gold Deposits of the Aldan Shield (Southern Yakutia,...Bukhanova, Galina A. Palyanova and Valery M. Chubarov Gold Mineralization at the Maletoyvayam Deposit (Koryak |
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