 | | 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...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...Ma), and in recent placers. The distribution of gold, its chemistry, paragenesis and mineralogical siting |  | | Journal (article/letter/editorial) | | Mineralogy and Mineral Chemistry of the Ashanti Gold Deposit at Obuasi, Ghana Shiloh OSAE*, Katsuo KASE** and...Abstract: The gold deposit at Ashanti occurs in the Proterozoic Birimian formation of Ghana. Two main ore...types mined from the deposit are gold-bearing quartz veins, and gold-sulfide disseminations in metasediments...metavolcanics. The main sulfide minerals in the gold-sulfide disseminated ores are arsenopyrite, pyrite...arsenopyrite commonly occur in small amounts, but gold mostly occurs in contact with tetrahedrite, chalcopyrite |  | Le Mignot, Elodie, Reisberg, Laurie, AndrĆ©-Mayer, Anne-Sylvie, Bourassa, Yan, Fontaine, Arnaud, Miller, John (2017) Re-Os Geochronological Evidence for Multiple Paleoproterozoic Gold Events at the Scale of the West African Craton. Economic Geology, 112 (1) 145-168 doi:10.2113/econgeo.112.1.145 | Journal (article/letter/editorial) | | Geochronological Evidence for Multiple Paleoproterozoic Gold Events at the Scale of the West African Craton Elodie...Archean-Proterozoic craton of West Africa hosts numerous gold deposits, which are spatially and temporally related...multiple deformation events. The majority of these gold deposits are located along shear zones. The structural...history is relatively well established for most gold deposits, but absolute timing of the mineralization...of gold events: Nassara and Kiaka in Burkina Faso and Wassa, Damang, and Obuasi in southern Ghana. Gold |  | Olson, Steven F., Diakite, Kassoum, Ott, Lawrence, Guindo, Ambogo, Ford, Christopher R. B., Winer, Nicholas, Hanssen, Eric, Lay, Nilda, Bradley, Robin, Pohl, Demetrius (1992) Regional setting, structure, and descriptive geology of the middle Proterozoic Syama gold deposit, Mali, West Africa. Economic Geology, 87 (2) 310-331 doi:10.2113/gsecongeo.87.2.310 | Journal (article/letter/editorial) | | Birimian(2.0-2.2 Ga) greenstonebelt in southernMali. Gold mineralizationis hostedby a thin (0.5-2.0 km) but...veinlets,andbrecciabodies.Pyriteis the principal gold-bearingmineral and occursdisseminatedin veinlet...ankerite,albite,andsericitealterationin the pyritic gold-bearingzones.Silica, Na20, Au, COe, S, and C havebeen... Tim Syamagolddepositis locatedin southernMali Ghana. 0361-0128/92/1313/310-2153.00 near the edge of...Ć . x Jeaā¢ lOON--. x x 'ā¢1 xAux xKalana x GHANA 8ON-- X X Xā¢ ā¢ X'ā¢ x X xX xā¢.ā¢Jā¢i LEONE %x I' |  | | 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...50Ā±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 |  | | Journal (article/letter/editorial) | | and Fairview gold mines: Clues to Mesoarchean mineralisation in the Barberton Greenstone Belt, South Africa...Keywords: Mesothermal gold Pyrite Arsenopyrite Archean Barberton Greenstone Belt a b s t r a c t The...mines are two of the major gold mines in the Paleoarchean Barberton Greenstone Belt of Southern Africa. At...mines, gold is associated with quartzācarbonate Ā± rutile veins and occurs both as āinvisibleā gold ļ¬nely...(primarily pyrite and arsenopyrite), and as visible electrum grains hosted in pyrite. Up to approximately 1000 |  | Bi, Shi-Jian, Li, Jian-Wei, Zhou, Mei-Fu, Li, Zhan-Ke (2011) Gold distribution in As-deficient pyrite and telluride mineralogy of the Yangzhaiyu gold deposit, Xiaoqinling district, southern North China craton. Mineralium Deposita, 46 (8) 925-941 doi:10.1007/s00126-011-0359-2 | Journal (article/letter/editorial) | | ARTICLE Gold distribution in As-deficient pyrite and telluride mineralogy of the Yangzhaiyu gold deposit...Yangzhaiyu lode gold deposit is situated in the southern edge of the North China craton. Gold mineralization...patterns of gold. The coarsegrained, euhedral G1 pyrite contains negligible to low levels of gold, whereas...whereas both invisible and visible gold are present in the fine- to medium-grained G2 pyrite that is characterized...(LA-ICP-MS) depth profiles indicate that invisible gold occurs either as solid solution or as nano- Editorial |  | Lee, Moontaek, Shin, Dongbok, Yoo, Bongchul, Im, Heonkyung, Pak, Sangjoon, Choi, Sunki (2019) LA-ICP-MS trace element analysis of arsenopyrite from the Samgwang gold deposit, South Korea, and its genetic implications. Ore Geology Reviews, 114. 103147 doi:10.1016/j.oregeorev.2019.103147 | Journal (article/letter/editorial) | | element analysis of arsenopyrite from the Samgwang gold deposit, South Korea, and its genetic implications...T R A C T Keywords: Orogenic deposit Invisible gold Arsenopyrite LA-ICP-MS South Korea The Samgwang...Samgwang deposit, previously classiļ¬ed as an orogenic gold deposit, consists of several structurally controlled...Gyeonggi massif, South Korea. The gold at Samgwang occurs as electrum commonly associated with arsenopyrite...inclusions or discrete particles. Furthermore, measured gold concentrations were typically higher in arsenopyrite |  | 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) | | fillwithinarsenopyrite 1. Thediffering silvercontents of electrum can beexplained by differing fluid-rock reactions...thatfluidinteraction withreducing pelites produced Ag-rieh electrum through destabilizationofgoldbisulfide andsilverchloride...metamorphic conditions. However, themajority of electrum grainscoexist witharsenopyrite i and composite...grainsandareinterpreted to haveformedfromsubmicroscopic gold released fromloellingite duringhigh-temperature...areevidence forprocesses thatoccurred afterthe main,gold-depositing hydrothermal ā¢ Corresponding author: |  | | Journal (article/letter/editorial) | | Article Mineralogy of the Boroo Gold Deposit in the North Khentei Gold Belt, Central Northern Mongolia Chinbat...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...boulangerite, geerite, alloclasite, native gold, and electrum. The ore minerals in the both types of ores...grain size. Four modes of gold occurrence are recognized: (i) āinvisibleā gold in pyrite and arsenopyrite |  | | 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 |  | Voute, F., Hagemann, S. G., Evans, N. J., Villanes, C. (2019) Sulfur isotopes, trace element, and textural analyses of pyrite, arsenopyrite and base metal sulfides associated with gold mineralization in the Pataz-Parcoy district, Peru: implication for paragenesis, fluid source, and gold deposition mechanisms. Mineralium Deposita, 54 (7) 1077-1100 doi:10.1007/s00126-018-0857-6 | Journal (article/letter/editorial) | | arsenopyrite and base metal sulfides associated with gold mineralization in the Pataz-Parcoy district, Peru:...Peru: implication for paragenesis, fluid source, and gold deposition mechanisms F. Voute 1 & S. G. Hagemann...fide veins hosted by the Pataz batholith. Total gold production yielded approximately 8 Moz with grades...galena, sphalerite, chalcopyrite, and gold. Gold occurs mostly as electrum in equilibrium with base metals...invisible gold deposition, and (3) deposition of sphalerite ā galena Ā± chalcopyrite ā electrum in fractured |  | 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 2.99ā2.70 Ga Rice Lake greenstone belt, Manitoba, Canada...dissolution-reprecipitation, respectively. Deposition of electrum (65ā86 at. % Au) postdated Q1 formation and was...was broadly syngenetic with Q2 formation. Electrum occurs in two forms: (1) along sutured (healed, recrystallized)...inclusions were trapped during the growth of Q1 (prior to gold deposition), the common occurrence of texturally |  | Li, Zhan-Ke, Li, Jian-Wei, Cooke, David R., Danyushevsky, Leonid, Zhang, Lejun, OāBrien, Hugh, Lahaye, Yann, Zhang, Wen, Xu, Hai-Jun (2016) Textures, trace elements, and Pb isotopes of sulfides from the Haopinggou vein deposit, southern North China Craton: implications for discrete Au and AgāPbāZn mineralization. Contributions to Mineralogy and Petrology, 171 (12) doi:10.1007/s00410-016-1309-x | Journal (article/letter/editorial) | | Sb. Invisible Au mostly occurs as lattice-bound gold in Py2 (up to 92 ppm Au) and Py3 (up to 127 ppm...isotopic data led us to conclude that the early gold-bearing pyriteāquartz veins and late silver-bearing...not be genetically related to each other. Keywords Gold veins Ā· AgāPbāZn veins Ā· Trace elements Ā· In situ...situ lead isotopes Ā· Haopinggou Introduction Gold vein deposits in Precambrian metamorphic terrains constitute...constitute one of the worldās most important gold resources, both in terms of historical production and |  | Genkin, Alexander D., Bortnikov, Nikolai S., Cabri, Louis J., Wagner, F. E., Stanley, Chris J., Safonov, Yurii G., McMahon, Greg, Friedl, J., Kerzin, Alexei L., Gamyanin, Gennady N. (1998) A multidisciplinary study of invisible gold in arsenopyrite from four mesothermal gold deposits in Siberia, Russian Federation. Economic Geology, 93 (4) 463-487 doi:10.2113/gsecongeo.93.4.463 | Journal (article/letter/editorial) | | RangeandNezhdaninskoye andSentachan in theVerkhoyansk-Kolyma area,inwhichveinanddisseminated orebodies arehosted bysedimentary...resultfromanevolution of fluidsrather thanredeposition of gold. Widevariations in the goldcontents of arsenopyrite...arsenopyrite grains(30-70/ā¢m in size)showthatthe gold Corresponding author: email, geodep@ipsun.ras.ru...golddistribution withinindividual arsenopyrite grains, with gold-rich areasusually depletedin arsenic andgold. TheAu...1937;Boyle,1979).Arsenopyrite is a common and significant gold-bearing sulfidemineral(Cabri,1992)and therehasbeena |  | Helmy, HassanM., Kaindl, Reinhard, Fritz, Harald, Loizenbauer, Jļæ½rgen (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 JuĢrgen Loizenbauer The Sukari Gold Mine, Eastern DesertāEgypt: 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...initially at conditions of about 300 C and 1.5ā2 kbar. Gold is associated with sulļ¬des in quartz veins and in...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 ļ¬ne-grained pyrite |  | | Journal (article/letter/editorial) | | 2002 Refractory gold ores in Archaean greenstones, Western Australia: mineralogy, gold paragenesis, metallurgical...6845, Western Australia ABSTR ACT Mesothermal gold ores in the Archaean Yilgarn Craton of Western Australia...submicroscopic gold (60 270 ppm), but does not contain inclusions of particulate gold. Arsenopyrite in...submicroscopic gold, but contains inclusions and fracture fillings of particulate gold. In some refractory...contains moderately high levels of submicroscopic gold (20 40 ppm), the concentration of which is directly |  | 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 nmā2 Ī¼m) and nanoparticles (<200 nm) of gold. The extensive |  | 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 āinvisible goldā (nanoparticles and/or latticebound) during subsequent |  | | Journal (article/letter/editorial) | | Epigenetic BIF-hosted gold lodes at the Abu Marawat area, Eastern Desert, Egypt: integrated mineralogical...related banded iron formation (BIF) at the Abu Marawat area, central Eastern Desert of Egypt. Sulphide-bearing...brittleāductile deformation event that affected the area at y550 Ma. Gold-base metal mineralisation is associated...mineralisation. Gold is refractory in pyrite and chalcopyrite, but rare visible gold/electrum and telluride... 59 Zoheir and Akawy BIF-hosted gold lodes at Abu Marawat area, Eastern Desert, Egypt felsite intrusions |  | | Journal (article/letter/editorial) | | Geology, v. 110, pp. 315ā335 Gold Mineralization at the Syenite-Hosted Beattie Gold Deposit, Duparquet, Neoarchean...Neoarchean Abitibi Belt, Canada Ludovic Bigotā ,* and Michel JĆ©brak DĆ©partement des Sciences de la Terre...located in the Abitibi greenstone belt, consists of two styles of gold mineralization: lithology controlled...associated with arsenian pyrite and arsenopyrite, with gold being in solid solution within the spongy As-rich...and polymetallic veins. In this facies gold is visible as electrum filling microfractures of brecciated |  | | Journal (article/letter/editorial) | | 5 ARTICLE Lithologically controlled invisible gold, Yukon, Canada Doug MacKenzie & Dave Craw & Craig...The newly discovered Cretaceous Coffee orogenic gold deposit (>4 Moz resource) consists of an extensive...primary mineralised rock is characterised by invisible gold in arsenian pyrite that has replaced biotite in...liberated nanoparticulate and microparticulate supergene gold, which remains essentially invisible. Varying degrees...persistence of invisible gold into the extensive supergene zone, with little gold particle size enhancement |  | Belousov, I., Large, R.R., Meffre, S., Danyushevsky, L.V., Steadman, J., Beardsmore, T. (2016) Pyrite compositions from VHMS and orogenic Au deposits in the Yilgarn Craton, Western Australia: Implications for gold and copper exploration. Ore Geology Reviews, 79. 474-499 doi:10.1016/j.oregeorev.2016.04.020 | Journal (article/letter/editorial) | | Yilgarn Craton, Western Australia: Implications for gold and copper exploration I. Belousov, R.R. Large,...Yilgarn Craton, Western Australia: Implications for gold and copper exploration, Ore Geology Reviews (2016)...Yilgarn Craton, Western Australia: implications for gold and copper exploration ARC Centre for Excellence...have Co>Ni, As>100Au, Te>Au, Se>Te. AC Orogenic gold deposits could be subdivided based on association...high Au mineralisation events. Keywords: pyrite, gold, Au, orogenic, VHMS, Yilgarn, Western Australia |  | | Journal (article/letter/editorial) | | Africa, hosts the largest Au deposit in the world. Gold mineralization is mostly concentrated in conglomerate...generations. In these grains, Au, occurring as āinvisible gold,ā and other trace elements might be finely dispersed...Ventersdorp Contact Reef. Gold is also present as secondary inclusions of electrum associated with the last...Au deposit, with an estimated >50,000 tonnes of gold produced since the year of first discovery, 1886...zones of pyrite (Deditius et al., 2009). Pyrite and gold in the Witwatersrand are tightly related, and their |  | Xu, Wen-Gang, Fan, Hong-Rui, Hu, Fang-Fang, Santosh, M., Yang, Kui-Feng, Lan, Ting-Guang, Wen, Bo-Jie (2014) Gold mineralization in the Guilaizhuang deposit, southwestern Shandong Province, China: Insights from phase relations among sulfides, tellurides, selenides and oxides. Ore Geology Reviews, 56. 276-291 doi:10.1016/j.oregeorev.2013.06.010 | Journal (article/letter/editorial) | | journal homepage: www.elsevier.com/locate/oregeorev Gold mineralization in the Guilaizhuang deposit, southwestern...2013 Keywords: Gold mineralization Sulļ¬de Telluride Selenide Phase relation Guilaizhuang gold deposit China...Guilaizhuang gold deposit is composed of limestone- and breccia-type ores. In the limestone ores, gold is hosted...whereas in the breccia ores, tellurides are the main gold carriers. Selenium often isomorphously substitutes...by phase diagrams at 250 Ā°C, the temperature for gold precipitation in the Guilaizhuang deposit. According |
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