 | | Journal (article/letter/editorial) | | Characteristics of Granitoid-Hosted Gold Deposits in the Birimian Terrane of Ghana: A Fluid Inclusion Microthermometric...vein quartz from 10 granitoid-hosted gold deposits and prospects in the Birimian terrane of Ghana, as...as well as from the Sansu mine (Ashanti shear zone type) and quartz veins in the nonmineralized Princess...microspectrometry. Fluid inclusions from the granitoid-hosted gold deposits are dominated by aqueous H2O-CO2-NaCl type...fluid inclusions coexist as groups in individual quartz grains of the samples studied. These fluid inclusions |  | | 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...boulangerite and jamesonite. The occurrence of the gold is intimately associated with arsenopyrite and the...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) | | 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 |  | | Journal (issue) | | exporter of rock crystal. Producer of: fusing quartz - quartz with piezoelectric properties. Precious stone...BRAZILIAN MINERALS WHOLESALE ONLY. MODERN SETTINGS IN GOLD AND SILVER AT TRADE PRICES the handmade jewellery...Carson Ritchie 28 32 Gems & Minerals Traditional Gold Industries in West Africa by David Baldry, D.Sc...O'Donoghue. 5 TRADITIONAL GOLD INDUSTRIES IN WEST AFRICA Part I. Gold deposits and their historical...African gold the thoughts of one's audience invariably turn to the Witwatersrand field, where gold was discovered |  | | Journal (article/letter/editorial) | | and fluid evolution of orogenic gold mineralisation at the Betam mine, south Eastern Desert, Egypt Basem...2007 # Springer-Verlag 2007 Abstract The Betam gold deposit, located in the southern Eastern Desert...Desert of Egypt, is related to a series of milky quartz veins along a NNW-trending shear zone, cutting through...boudinaged within the shear zone, the auriferous quartz veins are characterised by irregular walls with...folds and asymmetrical strain shadows around the quartz lenses suggests that vein emplacement took place |  | de Souza Martins, Breno, Lobato, Lydia Maria, Rosière, Carlos Alberto, Hagemann, Steffen G., Santos, João Orestes Schneider, Villanova, Fernando Lucas dos Santos Peixoto, Figueiredo e Silva, Rosaline Cristina, de Ávila Lemos, Lucas Henrique (2016) The Archean BIF-hosted Lamego gold deposit, Rio das Velhas greenstone belt, Quadrilátero Ferrífero: Evidence for Cambrian structural modification of an Archean orogenic gold deposit. Ore Geology Reviews, 72. 963-988 doi:10.1016/j.oregeorev.2015.08.025 | Journal (article/letter/editorial) | | com/locate/oregeorev The Archean BIF-hosted Lamego gold deposit, Rio das Velhas greenstone belt, Quadrilátero...Cambrian structural modification of an Archean orogenic gold deposit Breno de Souza Martins a,⁎, Lydia Maria...Highway, Crawley, WA 6009, Australia AngloGold Ashanti Córrego do Sítio Mineração S/A, Mina do Lamego...Quadrilátero Ferrífero Orogenic gold deposit a b s t r a c t The Lamego orogenic gold deposit (1.3 Mt measured...trend, Quadrilátero Ferrífero region, Brazil. Both Archean orogenic gold deposits are situated in the |  | Morales, Milton J., Figueiredo e Silva, Rosaline C., Lobato, Lydia M., Gomes, Sylvio D., Gomes, Caio C.C.O., Banks, David A. (2016) Metal source and fluid–rock interaction in the Archean BIF-hosted Lamego gold mineralization: Microthermometric and LA-ICP-MS analyses of fluid inclusions in quartz veins, Rio das Velhas greenstone belt, Brazil. Ore Geology Reviews, 72. 510-531 doi:10.1016/j.oregeorev.2015.08.009 | Journal (article/letter/editorial) | | Lamego gold mineralization: Microthermometric and LA-ICP-MS analyses of fluid inclusions in quartz veins...Horizonte, MG, Brazil AngloGold Ashanti Córrego do Sítio Mineração S/A, Lamego Mine, Rua Mestre Caetano, Sabará...Hydrothermal alteration Quartz veins Metamorphic fluids a b s t r a c t The Lamego orogenic gold deposit (440,742...742 oz gold measured reserves and 2.4 million t measured resources, with an average grade of 5.71 g/t...and a cut-off grade of 2.15 g/t Au; AngloGold Ashanti Córrego do Sítio Mineração S/A (AGA) personal communication |  | da Silva, Maria da Glória, Silva Coelho, Carlos Eduardo, Teixeira, João Batista Guimarães, da Silva, Fernando César Alves, Silva, Roberto Albuquerque, de Souza, Jorge André Braz (2001) The Rio Itapicuru greenstone belt, Bahia, Brazil: geologic evolution and review of gold mineralization. Mineralium Deposita, 36 (3) 345-357 doi:10.1007/s001260100173 | Journal (article/letter/editorial) | | Bahia, Brazil: geologic evolution and review of gold mineralization Received: 20 November 1999 / Accepted:...2001 Ó Springer-Verlag 2001 Abstract Shear-hosted gold deposits in the Rio Itapicuru greenstone belt occur...collision and granitoid emplacement. In this context, gold mineralization occurred mainly during late collisional...rocks gave rise to the Weber gold belt, which contains the largest gold deposits of northeastern Brazil...of its gold districts, and discusses the overall geologic evolution of this Paleoproterozoic gold province |  | | Journal (article/letter/editorial) | | shear zone-related gold mineralization in Egypt: A case study from the Um El Tuyor mine, south Eastern Desert...zone Orogenic gold Um El Tuyor Eastern Desert Allaqi Egypt A B S T R A C T Although gold production from...Egypt, numerous but small gold deposits are generally related to auriferous quartz veins commonly associated...Tuyor gold deposit, in the extreme south of the Eastern Desert, consists of a series of quartz and quartz–carbonate...are mainly quartz–carbonate (quartz+Fe-dolomite/ankerite+muscovite/sericite+ sulfides ±gold/electrum) and |  | | Journal (article/letter/editorial) | | Orogenic gold formation in an evolving, decompressing hydrothermal system: Genesis of the Samut gold deposit...Orogenic gold formation in an evolving, decompressing hydrothermal system: Genesis of the Samut gold deposit... Orogenic gold formation in an evolving, decompressing hydrothermal system: Genesis of the Samut gold deposit...zoheir@gmail.com) ABSTRACT Samut is a vein-type gold mineralization in the Eastern Desert of Egypt, which...geologic features with other orogenic deposits in this region. The deposit has a long history of mining activity |  | | Journal (article/letter/editorial) | | Journal Pre-proofs Shear-zone-related gold mineralization in quartz-carbonate veins from meta‐ mafic rocks...Silva, L.M. Lobato, Shear-zone-related gold mineralization in quartz-carbonate veins from metamafic rocks...Elsevier B.V. 1 Shear-zone-related gold mineralization in quartz-carbonate veins from metamafic rocks... Minas Gerais state, is the largest underground mine in Brazil (5.78 Moz resources of 10.26 g/t Au -...of overall production). This world-class orogenic gold deposit 12 is part of the Rio das Velhas greenstone |  | 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) | | studies on quartz-carbonate-sulfide veins of the Carvoaria Velha deposit, Córrego do Sítio gold lineament...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...alteration to quartz, carbonate and sericite, besides sulfides and sulfosalts. The main gold mineralization |  | Voicu, Gabriel, Bardoux, Marc, Jebrak, Michel, Crepeau, Robert (1999) Structural, mineralogical and geochemical studies of the Paleoproterozoic Omai gold deposit, Guyana. Economic Geology, 94 (8) 1277-1303 doi:10.2113/gsecongeo.94.8.1277 | Journal (article/letter/editorial) | | Atlocalscale, thegold-bearing quartz veinsareassociated mainly witha quartz monzodioritic intrusion (Omaistock...(Omaistock, Fennell pit)andsubvolcanic quartz-feldspar porphyry and rhyolite dikes, andsubordinately, withintermediate...volcanic flows andmetasedimentary rocks (Wenot pit).Six gold-bearing undeformed subhorizontal andsubvertical...in theGuianaShieldconsisting of alter- America. Gold occurrences in this area have been known for natingmarieto...theOmaiarea located withintheOmaistock (Fennell pit),quartz-feldspar can be found in Bertoni et al. (1991b) |  | | Journal (article/letter/editorial) | | South Africa Present address: Kopanang Mine, AngloGold Ashanti Limited email: dgrove®AngloGoldAshanti...externally derived fluid po,st burial metamorphism. Gold-rich sections of the Carbon Leader Reef do not have...h'^O values than the adjacent gold-poor section, which .suggests that gold mineralization i.s not related...in South Africa has yielded more than 40% of all gold mined in recorded history and a total of 48.670...2000 (Frimmel and Minter, 2002). The origin of the gold has been the topic of intense debate for many years |  | Kassem, Osama M. K., Abd El Rahim, Said H., El Nashar, EL Said R., AL Kahtany, Kaled M. (2016) Application of kinematic vorticity and gold mineralization for the wall rock alterations of shear zone at Dungash gold mining, Central Eastern Desert, Egypt. Geology of Ore Deposits, 58 (6) 499-515 doi:10.1134/s1075701516060052 | Journal (article/letter/editorial) | | Vorticity and Gold Mineralization for the Wall Rock Alterations of Shear Zone at Dungash Gold Mining, Central...shear zone at Dungash gold mine. Furthermore, it shows the relationship between the gold mineralization and...deformation. The Dungash gold mine area is situated in an EW-trending quartz vein along a shear zone in...Keywords: kinematic vorticity, microstructural, gold mineralization, dungash area, Egypt DOI: 10.1134/S1075701516060052...Eastern Desert of Egypt have long been known to host gold, with more than 95 occurrences so far identified |  | Helmy, HassanM., Kaindl, Reinhard, Fritz, Harald, Loizenbauer, J�rgen (2004) The Sukari Gold Mine, Eastern Desert?Egypt: structural setting, mineralogy and fluid inclusion study. Mineralium Deposita, 39 (4) doi:10.1007/s00126-004-0426-z | Journal (article/letter/editorial) | | Harald Fritz Jürgen Loizenbauer The Sukari Gold Mine, Eastern Desert—Egypt: structural setting, mineralogy...2004 Springer-Verlag 2004 Abstract The Sukari gold mine (18.8 Mt @ 2.14 g/t Au) is located 15 km west...about 300 C and 1.5–2 kbar. Gold is associated with sulfides in quartz veins and in alteration zones...beside minor sphalerite, chalcopyrite and galena. Gold occurs in three distinct positions: (1) anhedral...arsenian pyrite and arsenopyrite, and (3) large gold grains (GIII) interstitial to fine-grained pyrite |  | | 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 . . ............................ |  | | Catalog/List | | Very rich dark greenish to black masses with minor quartz in association . Specimen A: ¥.x2tx2 " , £8 .00...areas of.mcrtrix. ~x2t " , £5.7Sp 6. AUSTI NITE. Gold Hill , Tooele Co. , utah , U.S.A. Creamy- white...2tX1t", £S . 00 9 . BISMUTHINITE . South Croft y Mine , Illogan , Cornwall. Silvery- grey bl ades and...needly crystals l yinQ .flat 0 1) crystallised quartz matrix . 1xt-"" O . 7Sp 10. BoLEITE. Santa Rosali...2X1t-'.' , £10 . 00. 12. BROCHANTITE . Portales mine , Oingham , New Mexico , U. S.A. Rich crusts of |  | Zoheir, Basem, Deshesh, Fatma, Broman, Curt, Pitcairn, Iain, El-Metwally, Ahmed, Mashaal, Shabaan (2018) Granitoid-associated gold mineralization in Egypt: a case study from the Atalla mine. Mineralium Deposita, 53 (5) 701-720 doi:10.1007/s00126-017-0772-2 | Journal (article/letter/editorial) | | Granitoid-associated gold mineralization in Egypt: a case study from the Atalla mine Basem Zoheir 1,2 &...Springer-Verlag GmbH Germany 2017 Abstract Gold-bearing sulfide-quartz veins cutting mainly through the Atalla...pyrite-galena-sphaleritechalcopyrite (±gold/electrum ± tetrahedrite ± hessite) assemblage. Gold occurs as small inclusions...conditions of deposition of the late base metal-gold assemblage are assumed to be below 300 °C. Rare...and Bi-galena are associated with sphalerite and gold in the late assemblage. The early and late sulfide |  | | Catalog/List | | il" in size . 2xl". £5 . 00 AI'-'GLE'.SITE. Hilton Mine, Scordale, Westmoreland. Cavities in Galena matrix...lxil" . £2.50 APOPHYLLITE and Preh;,ite. Phalaborwa Mine, Transvaal, S. Africa. Very rich specimen suitable...2x3 '; . £14.00 NATIVE ARSE.'lIC + Stibnite. Kusa Mine, Nr . Bau, Sarawak, Borneo. Specimen ASilvery grey...Malachite in association . 2~xl~". £5 . 50 AZURITE. Wood Mine, Alderl ey &!ge, Cheshire . Pale inky blue coating...Realgar cmd Pyrite. 2b,:l" . £4. 00 BERYL with Smoky Quartz. Lundy IsIRl1d . Pa l e turquoise crystals to |  | Adjo, Fatchessin Bruno, Bolarinwa, Anthony Temidayo, Adissin Glodji, Luc, Dongmo, Franck Wilfried Nguimatsia, Olajide-Kayode, Jerry Olugbenga (2019) A review of the current state of knowledge on gold mineralisation in Benin Republic, West Africa. Applied Earth Science, 128 (1) 2-14 doi:10.1080/25726838.2018.1556503 | Journal (article/letter/editorial) | | 1556503 A review of the current state of knowledge on gold mineralisation in Benin Republic, West Africa Fatchessin...Abomey-Calavi, Benin ABSTRACT ARTICLE HISTORY Gold in Benin occurs as primary and alluvial forms in...us to recognise the main style of primary gold as being quartz-vein hosted. This style occurs principally...milky, deformed and gold is associated with sulphides and tourmaline. In these veins, gold exhibits three...combined or included in sulphides. These gold-bearing quartz veins would proceed from hydrothermal solutions |  | Kesarwani, M., Sarangi, S., Srinivasan, R., George, B.G., Singh, S.K, Bhattacharya, S., Vasudev, V.N. (2019) Origin of granodiorite hosted Neoarchaean orogenic gold ore deposits: Stable isotopic and geochemical constraints with example from the Dharwar craton, southern India. Ore Geology Reviews, 107. 754-779 doi:10.1016/j.oregeorev.2019.03.001 | Journal (article/letter/editorial) | | Origin of granodiorite hosted Neoarchaean orogenic gold ore deposits: Stable isotopic and geochemical constraints...Origin of granodiorite hosted Neoarchaean orogenic gold ore deposits: Stable isotopic and geochemical constraints... Origin of granodiorite hosted Neoarchaean orogenic gold ore deposits: Stable isotopic and geochemical constraints...source of auriferous ore fluids for the orogenic gold deposits of all ages worldwide is considered to...metamorphic except those of largest granitoid hosted gold deposit of Jiadong Peninsula, North China craton |  | | Journal (article/letter/editorial) | | Structural controls of fluid flow and gold mineralization in the easternmost parts of the Karagwe-Ankole...Harris, Chris, Structural controls of fluid flow and gold mineralization in the easternmost parts of the Karagwe-Ankole...MANUSCRIPT Structural controls of fluid flow and gold mineralization in the easternmost parts of the Karagwe-Ankole... ACCEPTED MANUSCRIPT Abstract Gold mineralization in the Biharumulo region of western Tanzania is confined...graphite-rich, in the hangingwall of the shear zone. Gold mining centers on specific structural sites along |  | Chakravarti, R., Singh, S., Venkatesh, A. S., Patel, K., Sahoo, P. R. (2018) A Modified Placer Origin for Refractory Gold Mineralization Within the Archean Radioactive Quartz-Pebble Conglomerates from the Eastern Part of the Singhbhum Craton, India. Economic Geology, 113 (3) 579-596 doi:10.5382/econgeo.2018.4563 | Journal (article/letter/editorial) | | Origin for Refractory Gold Mineralization Within the Archean Radioactive Quartz-Pebble Conglomerates from...Mines), Dhanbad 826004, India Abstract Archean quartz-pebble conglomerates are one of the most extensively...well known for their gold and uranium prospects of economic grades. Similar quartz-pebble conglomerate...of the SinghbhumOrissa craton in eastern India. Gold and uranium occurrences have been reported previously...on gold occurrences and genesis is available. This work focuses on the nature and genesis of gold mineralization |  | Müller, Axel, Ganerød, Morgan, Wiedenbeck, Michael, Svendsen Spjelkavik, Skule, Selbekk, Rune (2018) The Hydrothermal Breccia of Berglia-Glassberget, Trøndelag, Norway: Snapshot of a Triassic Earthquake. Minerals, 8 (5) 175 doi:10.3390/min8050175 | Journal (article/letter/editorial) | | 23 April 2018 Abstract: The quartz-K-feldspar-cemented breccia of Berglia-Glassberget...collectors for being a large and rich site of crystal quartz of various colours and habits. Despite being a...microthermometry, and trace element chemistry of quartz suggests that the breccia was formed at depths...Europe during the middle/late Triassic. Keywords: quartz; breccia; earthquake; Triassic; Berglia-Glassberget...being a large and rich site of high-quality crystal quartz of various colours and habits found in open cavities |
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