 | | Journal (article/letter/editorial) | | precursor to orogenic gold mineralisation, Otago Schist, New Zealand Anicia Henne & Dave Craw Received: 3...January 2012 # Springer-Verlag 2012 Abstract The Macraes orogenic gold deposit is hosted by a graphitic...protoliths, that occur locally in background pelitic Otago Schist metasediments. This study was aimed at determining... Argillites in the protolith turbidites of the Otago Schist metamorphic belt contain minor amounts of...Geology Department, University of Otago, PO Box 56, Dunedin, New Zealand e-mail: dave.craw@otago.ac.nz |  | | Journal (article/letter/editorial) | | schist-hosted metamorphogenic Au-W deposit, Macraes, East Otago, New Zealand S.A. McKeag, D. Craw* and R.J. Norris...Department, University of Otago, Dunedin, New Zealand Abstract. The Macraes gold-tungsten deposit occurs...occurs in a low-angle thrust system in biotite grade Otago Schist. Native gold, scheelite, pyrite and arsenopyrite...oil), similar to graphite in medium-high grade Otago Schist, and is presumed to be metamorphic in origin...mineralization (Nesbitt et al. 1986). In the Otago Schist, New Zealand, there are numerous Au-W deposits hosted |  | | Journal (article/letter/editorial) | | refractory ore in an orogenic gold deposit, Macraes mine, New Zealand Received: 5 October 2004 / Accepted:...March 2005 Springer-Verlag 2005 Abstract The Macraes mine is hosted in an orogenic (mesothermal) gold...gold deposit in metasedimentary rocks of the Otago Schist belt. Much gold occurs within altered schist with...Geology Department, University of Otago, PO Box 56, Dunedin, New Zealand E-mail: dave.craw@stonebow.otago...on refractory ore at the Macraes mine of southern New Zealand. The Macraes deposit is diļ¬erent from most |  | | Journal (article/letter/editorial) | | Orogen, Australia; Buller Terrane and Otago Schist, New Zealand; Meguma Terrane, Canada; Tien Shan Mountains... the Buller Terrane and the Otago Schist in South Island of New Zealand, the French Massif Central, the...producers in central Victoria, Nova Scotia, New Zealand and elsewhere ŽChristie et al., 1999; Bierlein...Shan. or rapid uplift Že.g., South Island of New Zealand. have removed weathering profiles, deep weathering...crust of Tasmaniaāthe Selwyn Blockāunderlies the region and protected it from the earlier deformation. |  | | Journal (article/letter/editorial) | | 1995; Ramsay et al., 1998); the Otago Schist Belt, South Island, New Zealand (e.g., Craw, 2002; McKeag et...province, the Meguma terrane, the LFB, and the Otago Schist Belt. This article also examines the previously... 2004; and Otago Schist Belt ā Craw, 1988), although saline ļ¬uids are identiļ¬ed in Otago Schist ļ¬uid...actinolitic hornblende, albite, quartz, chlorite, sericite, epidote, and carbonate. The south Ashanti rocks...(Attoh et al., 2006). The basalts in the Ashanti mine area are unfoliated, but are metamorphosed to chlorite+ |  | | Journal (article/letter/editorial) | | 2006 Abstract Gold extraction at the Macraes gold mine in New Zealand involves concentration of pyrite and...cyanidation. The ore concentrate is predominantly Otago Schist host rock (andesitic composition) with up...Geology Department, University of Otago, P.O. Box 56, Dunedin, New Zealand e-mail: dave.craw@stonebow.otago...titanite Quartz, kaolinite, smectite, illite, sericite Pyrite, chalcopyrite, rutile Quartz, alunite...2001) is located at the Macraes gold mine, New Zealand (Craw 2003). The gold mine is developed in a mesothermal |  | | Journal (article/letter/editorial) | | gold deposits, Reefton goldfield, South Island, New Zealand Received: 20 January 2001 / Accepted: 28 January...prior to 1951, and recent exploration has identiļ¬ed new gold resources in several deposits, including the...Sciences Limited, P.O. Box 31-312, Lower Hutt, New Zealand E-mail: t.christie@gns.cri.nz Tel.: +64-4-5701444...assistance to exploration. Keywords Alteration Ć New Zealand Ć Orogenic gold Ć Reefton Introduction The Reefton...in the Buller terrane of the South Island of New Zealand (Fig. 1). The goldļ¬eld produced more than 67 |  | Ding, Zhengpeng, Deng, Teng, Xu, Deru, Li, Zenghua, Zou, Shaohao, Li, Lirong, Xu, Ke, Hai, Yan, Ma, Wen (2020) Genesis of Two Types of Carbonaceous Material Associated with Gold Mineralization in the Bumo Deposit, Hainan Province, South China. Minerals, 10 (8) 708 doi:10.3390/min10080708 | Journal (article/letter/editorial) | | orogenic gold deposits, such as the Macraes deposit in New Zealand [1], Cosmo Howley in Australia [2]...Baoban Group is mainly composed of the quartz sericite schists, carbonaceous shales (CM-bearing rock)...Baoban Group is mainly composed of the quartz sericite schists, carbonaceous shales (CM-bearing rock)...minerals mainly include quartz, CM, calcite, and sericite (Figure 3C,D). Previous research indicates that...minerals mainly sulfides generally alongand the sericite boundary between quartz research veins and layered |  | | Journal (article/letter/editorial) | | regional-scale studies, thermodynamic modelling, new and emerging analytical techniques and experimental...was pioneered by Pitcairn et al. (2006) in the Otago Schist, where they demonstrated that highergrade...metals (As, Mo, Au, Ag, Sn, W, Cd and Hg). The Otago Schist was ideal for study because it is devoid...ļ¬uid inclusions at the Phanerozoic world-class Macraes mine (Goodwin et al. 2017); (2) stable carbon isotope...faults (Macraes mine, New Zealand: Teagle et al. 1990); (3) normal faults during exhumation (Otago Schist |  | | Journal (article/letter/editorial) | | Permo-Carboniferous granitoid intrusions of the New England Orogen. Mineralisation occurred at a range...White P. M. Ashley (&) Earth Sciences, University of New England, 2351 Armidale, NSW, Australia E-mail: pashley@metz...Geology Department, University of Otago, PO Box 56, Dunedin, New Zealand structural levels in the one deposit...a whole, and relate these features to the local mine scale. These observations are then linked to the...late Palaeozoic to Fig. 1A Southern portion of the New England Orogen with location of the Hillgrove district |  | | Journal (article/letter/editorial) | | peralkaline porphyritic granite, South Island, New Zealand Received: 9 July 2004 / Accepted: 27 July 2005...alteration/mineralisation, and deformation in the region are not well constrained, which makes it diļ¬cult...Brathwaite GNS Science, P.O. Box 30-368, Lower Hutt, New Zealand E-mail: k.faure@gns.cri.nz Keywords Granite...lamprophyre is altered to an ankeriteā chloriteāsericite assemblage. Stage III sulphide veins are composed...the northwest Nelson region of the northern part of the South Island of New Zealand (Fig. 1), was discovered |  | | Journal (article/letter/editorial) | | A new model for copper mineralisation in the Polish Kupferschiefer D. H. M. Alderton1, D. J. Blundell1...concentration of Cu in the fluid transport system. A new conceptual model is presented, based in particular...isotope ratios of present-day natural gas in this region suggest a mantle origin for the gas, supporting...Queensland, Klondike Exploration Services, 2000, 1ā43. A new laboratory for LA-ICP-MS analysis of fluid inclusions:... Abstracts: 2004 Annual Meeting MDSG Re-evaluation of flat-style mineralisation in the Northern Pennines ā |  | | Journal (article/letter/editorial) | | hosted by felsic and maļ¬c metavolcanic rocks and sericite-schists of Mesozoic age (Fig. 1B). The maximum...mineralized felsic and maļ¬c metavolcanic rocks and sericite-schists were analyzed for oxygen isotopes and...1994. Tectonics of Zagros orogenic belt of Iran: new data and interpretations. Tectonophysics 229, 211ā238...vein formation in an accretionary prism, Otago schist, New Zealand. Geology 30, 499ā502. Burrows, D.R., Spooner...mesothermal gold vein systems, Southern Alps, New Zealand. Ore Geology Reviews 26, 995ā1005. De Ronde, |  | Qiu, Kun-Feng, Yu, Hao-Cheng, Deng, Jun, McIntire, Duncan, Gou, Zong-Yang, Geng, Jian-Zhen, Chang, Zhao-Shan, Zhu, Rui, Li, Kang-Ning, Goldfarb, Richard (2020) The giant Zaozigou Au-Sb deposit in West Qinling, China: magmatic- or metamorphic-hydrothermal origin?. Mineralium Deposita, 55 (2) 345-362 doi:10.1007/s00126-019-00937-w | Journal (article/letter/editorial) | | Hydrothermal monazite is associated with sulfides and sericite, and has a 207Pb-corrected 206Pb/238U age of 211...magma emplaced into the metamorphosed rocks (e.g., Macraes: de Ronde et al. 2000; Sanshandao: Fan et al. 2003;...al. 2016a), situated in the Tongren-XiaheHezuo region, represents the largest active gold producer in...Simplified geological map of the TongrenāXiaheā Hezuo region of the West Qinling gold province, showing distribution...minerals consist of quartz, biotite, dolomite, sericite, feldspar, and epidote, with accessory apatite |  | | Journal (article/letter/editorial) | | zone shows intense alteration, characterized by sericite, chlorite and quartz. Fig. 1 Occurrence of Lower...same minerals as characterize the alteration (sericite and chlorite) can be observed in pressure shadows...pyrite crystals present in the mineralized veins. Sericite and chlorite show the same geochemical evolution...reactivated cleavage planes show a similar trend in sericiteāchlorite pattern to the surrounding altered host...ductileābrittle region at a depth of ca 8 km. 40Ar/39Ar dating dating was carried out on sericite samples taken |  | | Journal (article/letter/editorial) | | gold quartz-vein mineralisation at the Tom's Gully mine, Northern Territory, Australia S. Sheppard Key Centre...several examples of shallowlydipping, quartz veins ("flat" reefs) hosted in thrust faults have been described...year produced about 350 000 oz of gold, and the region contains almost 200 tonnes of reserves and measured... Igneous rocks and thermal metamorphism in the mine area The Mt Bundey pluton consists of a margin of...dykes, intrude the metasedimentary rocks in the mine area. Granite, aplite and lamprophyre dykes are |  | | Journal (article/letter/editorial) | | which are metamorphosed to greenschist facies, sericite and chlorite schists. The gold orebodies were...contrasts allowed fracturing to focus on the quartzā sericite domain boundaries of the mylonitic foliation,...sulfidation zone (major ore body); sericite and carbonate alteration zone; and sericiteāchlorite alteration zone...of a suite of felsic and mafic metavolcanics, sericite schist, chlorite schist, phyllite, metamorphosed...including felsic and mafic volcanics, pyroclastics, sericite and chlorite schist rocks. The metavolcanosedimentary |  | Liu, Jun, Wu, Guang, Qiu, Huaning, Li, Yuan (2015) 40Ar/39Ar dating, fluid inclusions and S-Pb isotope systematics of the Shabaosi gold deposit, Heilongjiang Province, China. Geological Journal, 50 (5) 592-606 doi:10.1002/gj.2577 | Journal (article/letter/editorial) | | studies are still rare. In this study, we report new results for the Shabaosi gold deposit, based on studies...Ar/39Ar dating, and SāPb isotopes of sulphides. These new Copyright Ā© 2014 John Wiley & Sons, Ltd. J. LIU...the ore volume. Gangue minerals include quartz, sericite, calcite, feldspar, chlorite, graphite and some...MongoliaāOkhotsk metallogenic belt and its adjacent region ((A) modiļ¬ed from Li et al., 2004; (B) modiļ¬ed...et al., 2013), 5.0ā° to 2.3ā° in Macraes gold deposit in New Zealand (Craw et al., 1995), 6.3ā° to 2.6ā° |  | | Journal (article/letter/editorial) | | Geology Department, University of Otago, PO Box 56, Dunedin 9054, New Zealand e-mail: dave.craw@otago.ac.nz...100 mg/kg) in metasedimentary quartzites in the region. Antimony provides more reliable soil anomalies...FPXRF analyses were conducted on ā¼1-cm spots on flat rock surfaces, and these augmented the routine laboratory-based...energy-dispersive spectrometer at the University of Otago, New Zealand, and a JEOL JXA-8600 wavelength dispersion...in the White River district is characterised by sericite and ankerite, with scattered pyrite, and associated |  | Khanchuk, Alexander I., Nechaev, Victor P., Plyusnina, Laura P., Berdnikov, Nikolay V., Molchanov, Vladimir P., Vysotskiy, Sergei V. (2013) Noble metal-graphite mineralization: A comparative study of the carbonaceous granite-gneiss complex and shales of the Russian Far East. Ore Geology Reviews, 53. 276-286 doi:10.1016/j.oregeorev.2013.01.013 | Journal (article/letter/editorial) | | Platinum Gold Graphite Mantle Fluid a b s t r a c t A new noble metal-graphite mineralization has been revealed...et al., 2004; Razvozzhaeva et al., 2008), Macraes, New Zealand (Craw, 2002), Carlin-type deposits in USA...al., 2010). Some magmatic events occurred in the region in the Mid Paleozoic time (Tsygankov et al., 2010)... They are composed of ļ¬ne-crystalline quartz, sericite, amorphous carbon, and graphite (total carbon...frequently mark fractures widely developed in the region. Relationships between graphite and associated |  | Huang, Shiqiang, Song, Yucai, Hou, Zengqian, Xue, Chuandong (2016) Chemical and stable isotopic (B, H, and O) compositions of tourmaline in the Maocaoping vein-type Cu deposit, western Yunnan, China: Constraints on fluid source and evolution. Chemical Geology, 439. 173-188 doi:10.1016/j.chemgeo.2016.06.031 | Journal (article/letter/editorial) | | Chalcopyrite, quartz, calcite, ankerite, and sericite are common in the vein-type Cu deposits, and tennantite...(tourmaline-A, -V1 and -V2) were collected from the mine of Maocaoping deposit (25Ā°55ā²00ā³N, 99Ā° 07ā²29ā³E,...peraluminous granite in an area about 2 km SW of the mine (Fig. 3). Major element compositions of tourmaline-A...observed in the Macres orogenic gold deposit, New Zealand (de Ronde et al., 2000). Two opinions have been...tourmaline in the Darasun gold district, Transbaikal region, Russia: evidence from chemical and boron isotopic |  | 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) | | Auriferous quartz-ankerite veins (Ā± albite Ā± sericite Ā± chlorite) contain early, coarse-grained, barren...adjacent Q2 grains in association with coeval sericite and ankerite, and (2) as inclusions coeval with...grains coeval with Q2 and secondary ankerite and sericite. Pyrite trace element mapping (by LA-ICP-MS) displays...greenstone belt, Canada, Smith et al., 1984; Sigma mine, Abitibi greenstone belt, Canada, Robert and Kelly...district, United States, Caddey et al., 1991; Rice Lake mine, Rice Lake greenstone belt, Canada, Ames et al. |  | Dugdale, Allison L., Wilson, Christopher J. L., Leader, Lawrence D., Robinson, Jamie A., Dugdale, L. Jonathon (2009) Carbonate spots: understanding the relationship to gold mineralization in Central Victoria, southeastern Australia. Mineralium Deposita, 44 (2) 205-219 doi:10.1007/s00126-008-0209-z | Journal (article/letter/editorial) | | orogenic gold deposits. However, exploration for new deposits under cover in central Victoria is difficult...Pages 206 Miner Deposita (2009) 44:205ā219 New Zealand, Craw 2002) and is recognized distal to mineralization...al. 2006; Rawling et al. 2006) provide relatively new approaches for assessing the spatial relationship...goldfield, Buller Terrane, New Zealand, Christie and Brathwaite 2003; Macraes goldfield, Fig. 1 Distribution...across strike from mineralization at Fiddlers Reef mine. Carbonate spots also occur proximal to 120 500 |  | Chai, Peng, Sun, Jing-gui, Hou, Zeng-qian, Xing, Shu-wen, Wang, Zhong-yu (2016) Geological, fluid inclusion, HāOāSāPb isotope, and ArāAr geochronology constraints on the genesis of the Nancha gold deposit, southern Jilin Province, northeast China. Ore Geology Reviews, 72. 1053-1071 doi:10.1016/j.oregeorev.2015.09.027 | Journal (article/letter/editorial) | | activity at a depth of 13.8ā15.2 km. One hydrothermal sericite sample from an auriferous quartz vein yielded...understanding of gold mineralization processes in this region. 1054 P. Chai et al. / Ore Geology Reviews 72...we present 40Ar/39Ar age data of hydrothermal sericite, which constrain the geochronology and tectonic...minerals include 80% quartz with minor amounts of sericite, chlorite, muscovite, calcite, and clay minerals...Mylonite schist composing of deformed quartz, sericite and chlorite; (E) Carbonaceous mylonite schist; |  | | Journal (article/letter/editorial) | | 1Geology Department, University of Otago, P.O. Box 56, Dunedin, New Zealand -' Department of Earth Sciences...50 gin. Alteration mineralogy is dominated by sericite and chlorite, with some iron-bearing carbonate...Heavy stipple shows region of homogenization to vapour, and lighter stipple shows region of homogenization...senior author was on study leave from University of Otago, based at Glasgow University. Fluid inclusion work...work was financed by the University of Otago Research Committee. R.B. thanks the German Research Foundation |
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