Figure 2.5 A) Hydrothermal altered dacitic (Dc) wall rock sample. B) Adularia (Ad) occurs as euhedral rhombs either within breccia clasts or as a matrix in veins. C) Quartz
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— The subvolcanic syenitic intrusions at the 2 Moz Karari–Whirling Dervish gold deposit are markedly different from most other alkalic rocks in the Kalgoorlie–Kurnalpi Rift. ... relative to unmineralised alkalic rocks in the region; (iii) alteration of igneous titanite to hydrothermal rutile with concomitant depletion of Nb; (iv) low rare ...
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— Although many minor orogenic gold deposits are present in eastern Victoria and there has been at least 70 t recorded alluvial gold production, the largest orogenic gold deposit in the region is only 1 t (Maher et al., 1997, Willman et al., 2005). We consider that the lack of large deposits is due to the significant amount of strike-slip ...
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— The largest deposits were found in the Karamoja area of the Northern region; however, gold reserves were also discovered in the country's eastern, central, and western regions. The discovery follows a two-year countrywide geophysical and geochemical survey. If accurate, this discovery would make Uganda the most gold-rich …
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— Open the PDF Link PDF for Chapter 9: Ore Genesis Constraints on the Agdarreh and Zarshouran Carlin-Style Gold Deposits in the Takab Region of Northwestern Iran in another window. Add to Citation Manager. Chapter 10: Comparison of the Allchar Au-As-Sb-Tl Deposit, Republic of Macedonia, with Carlin-Type Gold Deposits ...
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The Luanling gold deposit is a lode gold deposit in the Xiong'ershan region located on the southern margin of the North China Craton. Based on typical mineral assemblages and relative Au contents, the pyrites in the Luanling deposit can be divided into four types: Py1-s, pyrite with abnormally high levels of Au in pyrite–quartz veins; Py1, pyrite with low …
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— The gold values determined both in the Hg-bearing opalite and pyrites are 500 and 340 ppb. respectively. Given these data, it is likely suggested that the Hg-bearing opalite represents the top of an epithermal gold mineralization which has not eroded yet. ... (BALIKESİR-SINDIRGI), INNER-WESTERN ANATOLIA, TURKEY ... The Paradise …
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replacement gold deposits to Carlin-type deposits, including low base-metal concen trations and regional anomalies in arsenic, antimony, and mercury (e.g. Kendall Mine, Montana). By analogy with modem hot springs, Ioralemon (1951) interpreted the Getchell, Nevada, deposit to have formed close to the surface based on the occurrence of vugs
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— The Kiziltepe low-sulfidation epithermal gold-silver deposit is located southeast of Yusufcam village (Sindirgi, Balikesir), and other prospects, including the Kepez, Kavakliduz, and Karaduz ...
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— Eleven gold‐rich porphyry copper and 14 epithermal gold deposits around the Pacific rim contain > 200 t (‐7 million oz) of gold. These large porphyry‐type deposits conform to a single overall model, whereas the large epithermal gold deposits are varied in both genetic type and mineralisation style. Most regional and local characteristics of the …
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Commercial mining in the region today is focused on targeting gold concentrated in primary in-situ quartz vein stockwork zones and the underlying metasediments, while local …
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indicated, 0.71 inferred) at a cutoff grade of 0.4g/t (Auryx Gold, 2010). Recent study of both the area and the deposit has shown that while Otjikoto is believed to be an orogenic gold deposit, it has some atypical alteration and mineralization characteristics. The deposit sits within the Okonguarri turbidite sequence (composed of psammitic and ...
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— The region is known for its alluvial gold deposits, which have attracted prospectors for centuries. The gold mines in Gyöngyösoroszi played a significant role in Hungary's mining industry. ... The Romans were attracted to the region's gold deposits and established several mines to extract the precious metal. These mines, collectively ...
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— The Sindirgi District (Balikesir, western Turkey) lies within the Western Anatolian volcanic and extensional province, adjacent to the WNW-trending Simav graben, approximately 130 km NE of Izmir. The Sindirgi mining district is underlain mainly by Miocene volcanic rocks and hosts several low-sulfidation epithermal Au-Ag deposits and …
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— Spain plundered, then mined, large amounts of gold, both alluvial and from hard-rock deposits, in the old Aztec and Inca empires in the first half of the 16th century, and Portugal followed up with discoveries in its African and Brazilian colonies. Russia mined gold in the Urals, and then Siberia was opened up for its alluvial gold deposits.
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— Geodynamic setting of mesothermal gold deposits: An association with accretionary tectonic regimes Robert Kerrich; Robert Kerrich 1. ... Sr, and Pb isotopic compositions of fluids reflect lithological complexity of the source regions and conduits. Ou the basis of this model it is suggested that mesothermal lode gold deposits are the …
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— Based on ore deposit geology and isotopic dating, we have classified hydrothermal gold–copper ore deposits in this region into four distinct types: (1) gold-rich porphyry copper deposits, (2) gold-rich porphyry-like copper deposits, (3) medium-sulphidation epithermal copper–gold deposits, and (4) high-sulphidation epithermal gold …
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— Orogenic gold deposits. There have been three distinct generations of orogenic gold mineralisation in the Otago Schist: Early Cretaceous (c. 140–130 Ma); middle Cretaceous (c. 110–100 Ma); and …
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Kiziltepe deposit, Sindirgi District, Balikesir Province, Turkey : Part of Ariana Red Rabbit gold project. Mindat relies on your donations to survive click here to help today! Log In Register. Language: ... Estimate based on other nearby localities or region boundaries. Margin of Error: ~35km. GRN: N27E16. Locality type: Deposit.
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— In the part of the western Qinling region where Carlin-type gold deposits occur, the regional dominant Palaeozoic N–S and E–W trending faults are crosscut by Mesozoic NW–SE trending faults (Zaw et al., 2007). Minerals associated with gold mainly consist of arsenian pyrite, arsenopyrite, realgar, orpiment, barite, stibnite, and cinnabar.
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— The Kiziltepe low-sulfidation epithermal gold-silver deposit is located southeast of Yusufcam village (Sindirgi, Balikesir), and other prospects, including the Kepez, Kavakliduz, and Karaduz ...
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— Abstract. The gold-rich Xiaoqinling–Xiong'ershan region in eastern Shaanxi and western Henan provinces, central China, lies about 30–50 km inland of the southern margin of the North China craton. More than 100 gold deposits and occurrences are concentrated in the Xiaoqinling (west), Xiaoshan (middle), and Xiong'ershan (east) …
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The orogenic gold deposits in Southeast Guizhou are an important component of the Xuefeng polymetallic ore belt and have significant exploration potential, but geochronology research on these gold deposits is scarce. Therefore, the ore genetic models are poorly constrained and remain unclear. In the present study, two important deposits (Pingqiu …
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— It is part of the Ariana Red Rabbit Gold Project located in the Sindirgi Gold Corridor, a province which is host to other epithermal and porphyry intrusion related Au deposits. The veins at Kiziltepe trend NW-SE are steeply dipping; showing colloform banding of quartz and chalcedony; quartz pseudomorphing platy calcite and bonanza …
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— The majority of metallic ore and limestone deposits in the Taebaeksan region are hosted in sedimentary rocks of the Joseon Supergroup (Park et al., 1988), and the most important are several ...
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gold deposits and the range of mineralization styles and deposit models that are now being applied to ... and Ridgeway from other gold occurrences in the region and what the potential is for additional discoveries of large gold resources in the Slate Belt. Historically, the Slate Belt deposits have produced gold ranging from about 1 metric ton ...
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porphyry and epithermal deposits. The largest and richest gold-bearing, global porphyry systems are related to potassic magmas. About 60% of the gold that is contained in the 25 largest porphyry copper-gold deposits in the world, as ranked by gold content, occurs in nine potassic magma-related deposits (Garwin, 2019).
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Download Table | Results of 40 Ar/ 39 Ar analysis of the Kızıltepe (Sındırgı) gold deposit and surrounding ignimbrites. from publication: Low-sulfidation epithermal Au-Ag mineralization in ...
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— The Nalunaq gold shown in Figure 9.16 is an example of hydrothermal gold. Two other examples of hydrothermal mineralization are below in Figures 9.81 and 9.82: molybdenite ore from the Keystone …
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— Gold is either the only economically important metal or a major by-product in 11 well-characterized deposit types—paleoplacer, orogenic, porphyry, epithermal, Carlin, placer, reduced intrusion related, volcanogenic massive sulfide (VMS), skarn, carbonate replacement, and iron oxide-copper-gold (IOCG), arguably more than for those of any …
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