 | | 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) | | Climate, Southern New Zealand Gemma Kerr and Dave Craw * Geology Department, University of Otago, P.O. Box 56...56, Dunedin 9054, New Zealand; gemma.kerr@otago.ac.nz * Correspondence: dave.craw@otago.ac.nz; Tel.:...active semiarid rain shadow zone of southern New Zealand and are probably typical for this type of environment...secondary minerals have formed with some of the new gold, providing some useful insights inorganic and...secondary minerals havegold formed with some of the new gold, providing some useful insights into the water |  | | Journal (article/letter/editorial) | | a ductile-brittle shear zone, Macraes Mine, Otago Schist, New Zealand Received: 4 December 1997 / Accepted:...facies schist which hosts the Macraes Mine in East Otago, New Zealand has been pervasively altered by...reduction and recrystallization of micas to form a new foliation. Muscovite has grown at the expense of...Department, University of Otago, PO Box 56, Dunedin, New Zealand P.V. Angus Macraes Mining Co. Ltd, PO Box...Box 84, Palmerston, Otago, New Zealand Introduction Gold mineralization has occurred in most metamorphic |  | | Journal (article/letter/editorial) | | dam, Otago, New Zealand D. Craw Geology Department, UniÕersity of Otago, PO Box 56, Dunedin, New Zealand...chemistry monitoring of a large mine tailings impoundment dam at the Macraes mine provided a site for a 5-year...study of progressive water–rock interaction with Otago Schist greenschist facies schist debris. Water of...experimental observations and other mine sites because the Macraes mine chlorite is intimately intergrown...rights reserved. Keywords: Environmental geology; Mine drainage; Chlorite; Calcite; Pyrite; Chemical weathering |  | | 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) | | arsenate (V) ion adsorption from mine waters, Macraes mine, New Zealand Alisa J. Roddick-Lanzilottaa, A...University of Otago, PO Box 56, Dunedin, New Zealand b Geology Department, University of Otago, PO Box 56...56, Dunedin, New Zealand Received 5 October 2000; accepted 17 August 2001 Editorial handling by R. Fuge...contain up to 10 mg l1 dissolved As at the Macraes mine, New Zealand, and this is all removed by adsorption...adhering to a ZnSe prism. Silicates, including kaolinite, adsorbed only small amounts of As which was readily |  | | 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...reserved. Keywords: Gold; Metamorphism; Graphite; New Zealand 1. Introduction Most schist-hosted mesothermal...1986). In contrast, the Macraes gold mine in the Otago Schist of New Zealand has volumetrically minor |  | | 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 different from most |  | | 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) | | 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) | | 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...aphthitalite (Na sulphate), kaolinite, chlorite Opal, cristobalite, kaolinite, alunite, alunogen, native... pyrrhotite, chalcopyrite, titanite Quartz, kaolinite, smectite, illite, sericite Pyrite, chalcopyrite |  | Scanlan, Emma J., Scott, James M., Wilson, Victoria J., Stirling, Claudine H., Reid, Malcolm R., Le Roux, Petrus J. (2018) In Situ 87Sr/86Sr of Scheelite and Calcite Reveals Proximal and Distal Fluid-Rock Interaction During Orogenic W-Au Mineralization, Otago Schist, New Zealand. Economic Geology, 113 (7) 1571-1586 doi:10.5382/econgeo.2018.4603 | Journal (article/letter/editorial) | | During Orogenic W-Au Mineralization, Otago Schist, New Zealand Emma J. Scanlan,1,†,* James M. Scott,1...of Otago, Dunedin 9054, New Zealand of Chemistry, University of Otago, Dunedin 9054, New Zealand for...Trace Element Analysis, University of Otago, Dunedin 9054, New Zealand 4Department of Geological Sciences...W-Au mineralization occurring in the Otago Schist in New Zealand. Scheelite Sr isotope populations, regardless... while scheelite 87Sr/86Sr values in the Hyde-Macraes shear zone and the Barewood and Bendigo deposits |  | | Journal (article/letter/editorial) | | southern New Zealand Dave Craw Geology Department, University of Otago, PO Box 56, Dunedin 9054, New Zealand...giant gold placer system on the Otago Schist of southern New Zealand was derived from Mesozoic orogenic...Canada had a similar geological history to the Otago placer field, and Klondike placer accumulation occurred...to California (USA), Victoria (Australia), Otago (New Zealand), and the Klondike (Yukon, Canada) (Boyle...from California (Boyle, 1979), ca 240 tonnes from Otago (Williams, 1974) and at least 450 tonnes from the |  | Weightman, Erin, Craw, Dave, Rufaut, Cathy, Kerr, Gemma, Scott, James (2020) Chemical evolution and evaporation of shallow groundwaters discharging from a gold mine, southern New Zealand. Applied Geochemistry, 122. 104766pp. doi:10.1016/j.apgeochem.2020.104766 | Journal (article/letter/editorial) | | groundwaters discharging from a gold mine, southern New Zealand Erin Weightman, Dave Craw *, Cathy Rufaut...Geology Department, University of Otago, PO Box 56, Dunedin, 9054, New Zealand A R T I C L E I N F O A B...Kersten Waste rock piles at the Macraes gold mine in southern New Zealand expose abundant fresh schist to...Compositionally different waters seeping from the mine tailings impoundment have >2500 mg/L dissolved sulfate...and these reactions affect the water quality of mine discharges (Plante et al., 2011; Lapakko, 2015; |  | | Journal (article/letter/editorial) | | formation, southern New Zealand Dave Craw ⁎, Kat Lilly Geology Department, University of Otago, PO Box 56, Dunedin...Dunedin 9054, New Zealand a r t i c l e i n f o Article history: Received 24 February 2016 Received...General setting The Mesozoic Otago Schist belt of southern New Zealand hosts numerous orogenic and associated...driven by progressive uplift and erosion as the region underwent tectonic rejuvenation through the Cenozoic...(Table 1; Youngson and Craw, 1995; Craw, 2010). The region has produced N 8 Moz (~250 t) of placer gold and |  | | 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) | | Enhances Biodiversity at Historic Mine Sites, Southern New Zealand Dave Craw * and Cathy Rufaut Geology...Geology Department, University of Otago, PO Box 56, Dunedin 9054, New Zealand; cathy.rufaut@otago.ac.nz * Correspondence:...Revegetation Enhances Biodiversity at Historic Mine Sites, Southern New Abstract: Rocks exposed by mining can...geochemically diverse surface substrates. Engineered mine rehabilitation typically involves covering these...biodiversity. Abandoned gold mines in southern New Zealand have developed such geoecological zonations that |  | 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) | | 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 |  | | Report (chapter) | | active plate boundary fault zone, Alpine Fault, New Zealand MARTINA KIRILOVA1*, VIRGINIA G. TOY1, NICK TIMMS2...Department of Geology, University of Otago, PO Box 56, Dunedin 9054, New Zealand 2 Department of Applied Geology...of Wellington, PO Box 600, Wellington 6140, New Zealand 7 Department of Earth and Ocean Sciences, University...deformation in the active Alpine Fault Zone, New Zealand by analysing samples obtained from Deep Fault...self-exhuming fault zone located in the South Island of New Zealand. The most important processes that we suggest |  | Stewart, James, Kerr, Gemma, Prior, Dave, Halfpenny, Angela, Pearce, Mark, Hough, Rob, Craw, Dave (2017) Low temperature recrystallisation of alluvial gold in paleoplacer deposits. Ore Geology Reviews, 88. 43-56 doi:10.1016/j.oregeorev.2017.04.020 | Journal (article/letter/editorial) | | Department of Geology, University of Otago, Dunedin 9054, New Zealand Ellensburg, WA, 98926-7418, USA 3...(millions of years). In the 18 Otago placer goldfield of southern New Zealand, paleoplacers of varying ages...gold particles from the Otago placer goldfield of southern New 82 Zealand, which range in age from...Geological setting of sampled paleoplacers 90 The Otago placer goldfield has been derived from orogenic...schist 91 basement, including the world-class Macraes mine (Fig. 1b; Williams 1974; Craw 2010). Erosion |  | | Journal (article/letter/editorial) | | mineralization during initiation of a mountain belt, New Zealand Received: 11 April 2006 / Accepted: 9 August...during folding of fissile schist in southern New Zealand: fold-related mineralization and normal fault-related...Geology Department, University of Otago, P.O. Box 56 Dunedin, New Zealand e-mail: dave.craw@stonebow.otago...1986; Craw et al. 2002). The South Island of New Zealand is a unique orogenic belt in that it hosts both...the Mesozoic deposits, including the world-class Macraes deposit (c. 150 t Au) have long since been eroded |  | | Journal (article/letter/editorial) | | and shape change of alluvial gold, southern New Zealand Gemma Kerr, Donna Falconer, Frank Reith, Dave...and shape change of alluvial gold, southern New Zealand, Sedimentary Geology (2017), doi:10.1016/j.sedgeo...shape change of alluvial gold, PT southern New Zealand The University of Adelaide, School of Biological...Department of Geology, University of Otago, Dunedin 9054, New Zealand SC 1 RI Gemma Kerr1, Donna Falconer1... This paper describes samples from southern New Zealand in which grain size reduction (to submicron scale) |  | 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) | | 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 |
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