 | Mortensen, J. K., Craw, D., MacKenzie, D. J., Gabites, J. E., Ullrich, T. (2010) Age and Origin of Orogenic Gold Mineralization in the Otago Schist Belt, South Island, New Zealand: Constraints from Lead Isotope and 40Ar/39Ar Dating Studies. Economic Geology, 105 (4) 777-793 doi:10.2113/gsecongeo.105.4.777 | Journal (article/letter/editorial) | | Orogenic Gold Mineralization in the Otago Schist Belt, South Island, New Zealand: Constraints from Lead Isotope...University of Otago, Dunedin, New Zealand 9054 Abstract The Otago Schist belt of southern New Zealand hosts...metamorphism. Previous 40Ar/39Ar dating studies in the Otago Schist belt indicate formation ages of ~106 to 101...a gold-bearing quartz stockwork vein at the Macraes mine, which is a relatively old mineralized system...Fine-grained muscovite from a quartz shear vein at Macraes gives a rising age spectrum with a maximum age |  | Pitcairn, I. K., Teagle, D. A. H., Craw, D., Olivo, G. R., Kerrich, R., Brewer, T. S. (2006) Sources of Metals and Fluids in Orogenic Gold Deposits: Insights from the Otago and Alpine Schists, New Zealand. Economic Geology, 101 (8) 1525-1546 doi:10.2113/gsecongeo.101.8.1525 | Journal (article/letter/editorial) | | Gold Deposits: Insights from the Otago and Alpine Schists, New Zealand IAIN K. PITCAIRN,†,* DAMON A. H...Geology Department, University of Otago, P.O. Box 56, Dunedin, New Zealand GEMA R. OLIVO, Department of...Kingdom Abstract The Otago and Alpine schists of the South Island of New Zealand form a young (<200 Ma)...orogenic gold deposits, including the 125-t Au Macraes deposit. As such, the schist belt is an ideal geologic...the lithologic and metamorphic variation in the Otago and Alpine schists was collected and analyzed for |  | | 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...submicron-scale inclusions of sphalerite, chalcopyrite, galena, and gold ( £ 10 microns). Gold in microsheared...Geology Department, University of Otago, PO Box 56, Dunedin, New Zealand E-mail: dave.craw@stonebow.otago |  | | Journal (article/letter/editorial) | | sedimentary basin, New Zealand D. Craw Ł , D.A. Chappell Geology Department, University of Otago, P.O. Box 56...Dunedin, New Zealand Received 6 April 1999; accepted 5 August 1999 Abstract River sediments at Macraes Flat...Flat, east Otago have formed in a tectonically active depression in the Otago Schist basement adjacent...Hyde–Macraes Shear Zone crosses the depression, and this shear zone hosts the Macraes gold mine. The...Sulphide minerals were eroded and deposited in the Macraes Flat river sediments at least 28,000 years ago. The |  | | Journal (article/letter/editorial) | | rock, Macraes gold mine, Otago Schist, New Zealand D. Craw * Geology Department, University of Otago, PO...9001 Dunedin, New Zealand Received 7 June 2001; accepted 31 May 2002 Abstract The Macraes gold deposit...deposit in the Otago Schist, New Zealand, formed during late metamorphic fluid flow through a lower greenschist...microshears. Pyrite, chalcopyrite, sphalerite and galena have formed from sulphidation of silicates with...reserved. Keywords: Gold; Metamorphism; Graphite; New Zealand 1. Introduction Most schist-hosted mesothermal |  | | Journal (article/letter/editorial) | | DURING PROGRADE METAMORPHISM OF THE OTAGO AND ALPINE SCHISTS, NEW ZEALAND Iain K. PITCAIRN§ Department of...University of Otago, PO Box 56, Dunedin, New Zealand Abstract Sulfide minerals in the Otago and Alpine...Alpine schists, New Zealand, a metasedimentary belt exposed from unmetamorphosed greywackes up to amphibolite...(up to 240 ppm). Chalcopyrite, sphalerite, and galena also occur as isolated grains. Chalcopyrite and...sphalerite contain few trace elements, whereas galena contains significant Se (up to 1600 ppm) and locally |  | | Journal (article/letter/editorial) | | Department, University of Otago, Leith Street, PO Box 56, Dunedin 9001, New Zealand Received 29 August 2002;...suite of a variety of thin sediments in southern New Zealand, with no evidence for chemical corrosion. These...thermodynamic data for arsenopyrite. Calculations using the new thermodynamic data suggest that arsenopyrite has...the laboratory and up to 400 ppm dissolved As in mine processing waters. These concentrations of dissolved...protective oxide coatings on arsenopyrite grains. Mine tailings containing arsenopyrite should be chemically |  | | 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 Tasmania—the Selwyn Block—underlies the region and protected it from the earlier deformation. |  | | Journal (article/letter/editorial) | | contrasting supergene gold alteration zones, southern New Zealand Dave Craw, Gemma Kerr PII: S0883-2927(17)30271-8...contrasting supergene gold alteration zones, southern New Zealand, Applied Geochemistry (2017), doi: 10.1016/ j...southern New Zealand 3 4 Dave Craw and Gemma Kerr 5 Geology Department, University of Otago, PO Box...Box 56, Dunedin 9054, New Zealand RI PT 6 Abstract 8 Supergene alteration of gold deposits has had...supergene processes in 12 the Otago Schist goldfield of southern New Zealand, and these analyses are used |  | | 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 — Craw, 1988), although saline fluids are identified in Otago Schist fluid...(Attoh et al., 2006). The basalts in the Ashanti mine area are unfoliated, but are metamorphosed to chlorite+...lavas and intermediate pyroclastics in the Ashanti mine area and suggest an evolution of basaltic-shield |  | | Journal (article/letter/editorial) | | uplift of the Otago and Alpine Schist, New Zealand D. Craw Geology Department. University Qf Otago, P.O. Box...Box 56. Dunedin, New Zealand (Received August 22, 1990; revised and accepted January 12, 1992 ) ABSTRACT...uplift of the Otago and Alpine Schist, New Zealand. Chem. Geol., 98:221-236. The Otago and Alpine Schist...transition and in the lower parts of the brittle region were deposited by water with < 1 mole% COz and...t m e n t , University of Otago, P.O. Box 56, D u n e d i n , New Zealand. uplift history. Major vein |  | | Journal (article/letter/editorial) | | in the Gold Quarry (Carlin type), Mt Olympus, Macraes and Konkera, the invisible gold is principally...process than free gold ores. With the advent of new analytical technologies over the last 20 years, we... no short pulse latest orogenic (py2) Macraes New Zealand schist 67 minor veinlets Mainly free...The instrumentation used in this study includes a New Wave 213 nm solid-state laser microprobe coupled...preferentially precipitates on pyrite, rather than starting a new nucleation point. py2, py3), but up to six generations |  | 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]...there are also some sphalerite, chalcopyrite, and galena (Figure 3B). The results of previous EMPA analyses...there are also some sphalerite, chalcopyrite, and galena (Figure 3B). The results of previous EMPA analyses...B) Pyrite and arsenopyritei.e., associated with galena, and quartz (Q1; reflected-light); (C) observations...CM-bearing black shales arsenopyrite associated with galena, sphalerite, and white quartz (Q1; reflected-light); |  | | 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 identified 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 Æ New Zealand Æ Orogenic gold Æ Reefton Introduction The Reefton...in the Buller terrane of the South Island of New Zealand (Fig. 1). The goldfield produced more than 67 |  | | 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, 1–43. 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 – |  | Wellnitz, A. Katrin, Scott, James M., Martin, Candace E., Palin, J. Michael, Stirling, Claudine H., Reid, Malcolm R., Wombacher, F., Craw, Dave (2019) Carbonation reactions and coupled element and isotope redistribution during shallow crustal gold mineralisation, New Zealand. Mineralium Deposita, 54 (5) 743-760 doi:10.1007/s00126-018-0838-9 | Journal (article/letter/editorial) | | during shallow crustal gold mineralisation, New Zealand A. Katrin Wellnitz 1 & James M. Scott 1 & Candace...meta-basite (greenschist) in the Otago Schist in New Zealand. The new data provide insight into the fluid-rock... Carbonate . Trace elements . Mineralisation . Otago Schist Introduction Editorial handling: S. Hagemann...Department of Geology, University of Otago, Dunedin 9054, New Zealand 2 Department of Chemistry, Centre...Trace Element Analysis, University of Otago, Dunedin 9054, New Zealand 3 Universität zu Köln, Geologie |  | | 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 difficult...Brathwaite GNS Science, P.O. Box 30-368, Lower Hutt, New Zealand E-mail: k.faure@gns.cri.nz Keywords Granite...sulphide veins are composed of arsenopyrite + pyrite ± galena ± sphalerite ± gold ± chalcopyrite ± pyrrhotite...the northwest Nelson region of the northern part of the South Island of New Zealand (Fig. 1), was discovered |  | Kříbek, Bohdan, Sýkorová, Ivana, Machovič, Vladimír, Knésl, Ilja, Laufek, František, Zachariáš, Jiří (2015) The origin and hydrothermal mobilization of carbonaceous matter associated with Paleoproterozoic orogenic-type gold deposits of West Africa. Precambrian Research, 270. 300-317 doi:10.1016/j.precamres.2015.09.017 | Journal (article/letter/editorial) | | scale. The Otago Schist Belt, South Island, New Zealand, hosts a single world-class Macraes gold deposit...During their study of the barren part of the Hyde-Macraes shear zones Henne and Craw (2012) identified several...Fleet, 1995; Mumin et al., 1996). Trace amounts of galena, sphalerite, stibnite, bornite, chalcopyrite, and...two major vibrons in the first-order Raman spectra region attributed to the crystalline and disordered phases...by Henne and Craw (2012) at the Macraes gold deposit in New Zealand, by Kříbek et al. (1994) in greenschist |  | | 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) | | structuralrelations,and a long known and well prospected region with numerousmines and prospects. The study of...over 200 miles. In the northeasternpart of the region the pre-Cambriansedimentaryrocksin which the veins...found particularly in the southwesternpart of the region. The chief intrusive rock is granite, which is...miles acro.sg,are found in the easternpart of the region,and a largeoneoccupiessomehundreds of squaremilesin...alsooccurat somedistancefrom them. Detailed work 3 in the New Ross Area has shown that two typesof graniteare |  | | Journal (article/letter/editorial) | | paragenesis of sulphide minerals. Pyrite, sphalerite, galena and cobaltite (as well as gersdorffite) decrease...metasedimentary terranes such as the Otago and Alpine Schist's, New Zealand, very efficient fluid focussing and...metasedimentary rocks in the Otago and Alpine Schists, South Island, New Zealand (Pitcairn et al., 2006a,...to those enriched in the orogenic Au deposits of Otago, and the depletions are interpreted to represent... Au vein mineralisation such as at the Cononish Mine near Tyndrum (Fig. 1; Hill et al., 2013; Pattrick |  | | Journal (article/letter/editorial) | | Journal of Science Yale University, P.O. Box 208109, New Haven, CT 06520-8109, Email: ajs@yale.edu, Phone...Corporation, 315 Madison Ave., Third Floor, Suite 3070, New York, NY 10017, USA, Email: geofluids@hindawi.com...University Press, One Liberty Plaza, 20th Floor, New York, NY 10006, USA, Email: subscriptions_newyork@cambridge...Nature Publishing Group, 75 Varick Street, 9th Floor, New York, NY 10013-1917, Email: subsciptions@natureny...Nature Publishing Group, 75 Varick Street, 9th Floor, New York, NY 10013-1917, Email: subsciptions@natureny |  | | Journal (article/letter/editorial) | | pyrite assemblages, locally containing sphalerite, galena, chalcopyrite and native gold. Concentration of...1994. Tectonics of Zagros orogenic belt of Iran: new data and interpretations. Tectonophysics 229, 211–238...vein formation in an accretionary prism, Otago schist, New Zealand. Geology 30, 499–502. Burrows, D.R., Spooner...mesothermal gold vein systems, Southern Alps, New Zealand. Ore Geology Reviews 26, 995–1005. De Ronde,...Hill shear zone-hosted gold deposit, Macraes flat, Otago, New Zealand: evidence of a magmatic ore fluid. Economic |  | Craw, Dave, Upton, Phaedra, Yu, Bing-Sheng, Horton, Travis, Chen, Yue-Gau (2010) Young orogenic gold mineralisation in active collisional mountains, Taiwan. Mineralium Deposita, 45 (7) 631-646 doi:10.1007/s00126-010-0297-4 | Journal (article/letter/editorial) | | Metamorphic fluid flow at the Pingfengshan historic gold mine was focussed in well-defined (4 km3) fracture zones...(*) Geology Department, University of Otago, Dunedin, New Zealand e-mail: dave.craw@stonebow.otago.ac.nz...Meteoric water P. Upton GNS Science, Dunedin, New Zealand Introduction B.-S. Yu National Taipei University...Sciences, University of Canterbury, Christchurch, New Zealand Y.-G. Chen Geosciences Department, National Taiwan...veins were emplaced in the Southern Alps of New Zealand (Craw et al. 2002, 2006). However, all these |  | | 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...arsenopyrite, loellingite and gold, minor pyrrhotite, galena and chalcopyrite, and rare sphalerite, comprises...arsenopyrite, where they are typically associated with galena; on arsenopyrite crystal faces, or; as fracture-filling |
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