 | Christie, A. B., Simpson, M. P., Brathwaite, R. L., Mauk, J. L., Simmons, S. F. (2007) Epithermal Au-Ag and Related Deposits of the Hauraki Goldfield, Coromandel Volcanic Zone, New Zealand. Economic Geology, 102 (5) 785-816 doi:10.2113/gsecongeo.102.5.785 | Journal (article/letter/editorial) | | Related Deposits of the Hauraki Goldfield, Coromandel Volcanic Zone, New Zealand ANTHONY B. CHRISTIE,ā ...GNS Science, P.O. Box 30-368, Lower Hutt 5040, New Zealand MARK P. SIMPSON, School of Geography, Geology...1142, New Zealand ROBERT L. BRATHWAITE, GNS Science, P.O. Box 30-368, Lower Hutt, New Zealand JEFFREY... Auckland 1142, New Zealand Abstract Epithermal Au-Ag vein deposits of the Hauraki goldfield in the...the Coromandel volcanic zone, New Zealand, produced 320,000 kg Au and 1.5 million kg Ag between 1862 and |  | | Journal (article/letter/editorial) | | Deposits and Prospects of the Waitekauri Area, Hauraki Goldfield, New Zealand MARK P. SIMPSONā AND JEFFREY...Auckland, New Zealand Abstract The Waitekauri area of the Hauraki goldfield, New Zealand, contains several...alteration and vein minerals along a 3-km-long composite cross section through the area. Most host rocks are intensely...illite, interstratified illite-smectite, smectite, calcite, hematite, and minor epidote. Many of these minerals...veins dominate at Sovereign and Jubilee, whereas calcite veins are more abundant at Scotia, Scimitar, and |  | | Journal (article/letter/editorial) | | Epithermal Gold-Silver Deposits of the Hauraki Goldfield, New Zealand: An Introduction DAVID A. JOHNā U.S...California 94025 Geology and Mineral Deposits of the Hauraki Goldfield The five papers that follow describe...systems in the Hauraki goldfield on the Coromandel peninsula of the North Island of New Zealand (Fig. 1).... The Hauraki goldfield contains more than 50 Miocene and Pliocene epithermal Au-Ag deposits and several...quartz veins in 1861 at the site of the Kapanga mine (Fig. 1C). Prospecting elsewhere on the Coromandel |  | | Journal (article/letter/editorial) | | Epithermal Gold-Silver Deposits in the Waihi-Waitekauri Region, New Zealand ANNE E. MORRELL,ā ,* CORINNE A. LOCKE...92019, Auckland Mail Centre, Auckland 1142, New Zealand Abstract Aeromagnetic, airborne radiometric...the adularia-sericite epithermal province of the Hauraki goldfield have delineated distinct anomalies associated...volcanic zone. An extensive (>20-km2) zone in the Waitekauri Valley is likely to be the result of multiple...potassium enrichment in the Waitekauri-Maratoto area. Gravity data in the Waihi district define a unique, double-peaked |  | | Journal (article/letter/editorial) | | Hydrologic Evolution of the Golden Cross Epithermal Au-Ag Deposit, New Zealand MARK P. SIMPSON,ā JEFFREY...University of Auckland, Private Bag 92019, Auckland, New Zealand AND STUART F. SIMMONS Geothermal Institute...Auckland, New Zealand Abstract Golden Cross, located in the Coromandel peninsula, New Zealand, is a classic...temporal zonation around veins, as defined along three cross sections (1,000 m long Ć 450 m deep), located 200...illite-smectite that mantles the deposit. Replacement calcite and minor siderite formed contemporaneously with |  | | Journal (article/letter/editorial) | | Epithermal Au-Ag Deposits of the Southern Hauraki Goldfield, New Zealand* Mark P. Simpson,1,** Sabina Strmic...University of Auckland, Private Bag 92019, Auckland, New Zealand 2 U.S. Geological Survey, P.O. Box 25046, MS-973...Martha, Favona, and ĀWaitekauri deposits, southern Hauraki goldfield, New Zealand. Quartz veins contain...and 242Ā°C. Fluid inclusions in quartz from the Waitekauri deposit homogenize from 210Ā° to 265Ā°C and contain...The Hauraki goldfield is located in the Coromandel Peninsula of the North Island of New Zealand (Fig |  | | Journal (article/letter/editorial) | | GoldenCrossEpithermalGold-SilverDeposit,Waihi, New Zealand CORNELE. J. DE RONDE* Geology DepartmentUniversity...NewZealandGeologicalSurā¢etd, P.O. Box$0 $68, Lower Hurt, New Zealand Abstract The GoldenCrossepithermalgold-silverdepositis...the Taupo volcaniczone in the Waihi district,Coromandel Peninsula,New Zealand.Gold andsilverof economicgrades(1-20...Alterationmineralsare dominatedby clay,quartz,adularia,calcite,and pyrite. Hydrothermalclaysshowa distinctzonationwith...previouslybeendescribedfromepithermal depositsin New Zealandandpossiblycontainorganicliquid(s). Oxygenisotopesof |  | | Journal (article/letter/editorial) | | Au-Ag Deposits: A Case Study from the Waitekauri Area, New Zealand MATHIJS A. BOODEN,ā JEFFREY L. MAUK...92019, Auckland Mail Centre, Auckland 1142, New Zealand Abstract Major element geochemical exploration...alteration can be quantified. In the Hauraki goldfield of New Zealand, altered andesites and dacites host...rocks in the Waitekauri area along a 3-km-wide section that extends from the central Waitekauri fault to...gained in adularia-quartzārich rocks close to the Waitekauri fault. Other major elements are preferentially |  | Simpson, Mark P., Gazley, Michael F., Stuart, Alistair G.J., Pearce, Mark A., Birchall, Renee, Chappell, Debra, Christie, Anthony B., Stevens, Murray R. (2019) Hydrothermal Alteration at the Karangahake Epithermal Au-Ag Deposit, Hauraki Goldfield, New Zealand. Economic Geology, 114 (2) 243-273 doi:10.5382/econgeo.2019.4630 | Journal (article/letter/editorial) | | Karangahake Epithermal Au-Ag Deposit, Hauraki Goldfield, New Zealand Mark P. Simpson,1,ā Michael F. Gazley...Research Centre, 114 Karetoto Road-RD4, Taupo 3377, New Zealand Scientific and Industrial Research Organisation...2013, New Zealand 4 GNS 5 Stevens Science, 1 Fairway Drive, Avalon, Lower Hutt 5010, New Zealand and...Pine Harbour Parade, Beachlands, Auckland 2018, New Zealand Abstract The Karangahake deposit is the third...largest gold producer in the Hauraki goldfield, Coromandel, New Zealand. Production was mainly from the |  | | Journal (article/letter/editorial) | | Favona Epithermal Gold-Silver Deposit, Waihi, New Zealand MARK P. SIMPSONā AND JEFFREY L. MAUK School of...Mail Centre, Auckland 1142, New Zealand Abstract The Favona deposit is a new epithermal vein discovery...>42.1 million oz (Moz) Ag), in the Hauraki goldfield of New Zealand. The concealed Favona vein is hosted...display distinct zonation along four subsurface cross sections (800 m long Ć 450 m deep) that transect...shallow levels, whereas late-stage overprinting calcite occurs at depth near the Amaranth, Cowshed, and |  | | Journal (article/letter/editorial) | | Composition of Altered Rocks at the Golden Cross Epithermal Au-Ag Deposit, New Zealand JEFFREY L. MAUKā AND MARK...Auckland Mail Centre, Auckland 1142, New Zealand Abstract Golden Cross is a late Miocene volcanic-hosted...quartz Ā± calcite Ā± adularia Ā± illite assemblages located in the Coromandel peninsula, New Zealand. Gold-...at Golden Cross, as at other volcanic-hosted epithermal deposits associated with quartz Ā± calcite Ā± adularia...locally offset by the formation of hydrothermal calcite. Progressively higher Na and Sr away from the veins |  | | Journal (article/letter/editorial) | | Epithermal Orebody: The Martha Hill Deposit, Waihi, New Zealand K. BERNARD SPĆRLI1,ā AND HUGH CARGILL2 1 Geology...92019, Auckland 1142, New Zealand 2 28 Norwich Avenue, New Plymouth 4310, New Zealand Abstract We describe...The world-class Martha Hill mine in the Hauraki goldfield of New Zealand (Figs. 1, 2), with a total mined...state of structural information in the Martha Hill mine up to 1994, as presented by Cargill (1994), and...style towards the now-exposed deeper levels of the mine similar to the downward disappearance of microcrystalline |  | | Journal (article/letter/editorial) | | Structural Evolution of the Golden Cross Epithermal Au-Ag Deposit, New Zealand MICHAEL J. BEGBIE,ā ,* Department... University of Otago, P.O. Box 56, Dunedin, New Zealand K. BERNHARD SPĆRLI, School of Geography, Geology...92019, Auckland Mail Centre, Auckland 1142, New Zealand AND JEFFREY L. MAUK School of Geography, Geology...Auckland 1142, New Zealand Abstract Golden Cross, located in the Hauraki goldfield of New Zealand, is a classic...The final stage was massive coarsely crystalline calcite veins. Similarities in vein type, orientation, |  | | Report (issue) | | NEW ZEALAND DEPARTMENT OF SCIENTIFIC AND INDUSTRIAL RESEARCH NEW ZEALAND GEOLOGICAL SURVEY 125th ANNIVERSARY...1865 -1990 NEW ZEALAND GEOLOGICAL SURVEY BULLETIN 104 ISSN 0077-9628 Minerals of New Zealand by G. L....initials should be G.T., not G.L. Lower Hutt, New Zealand 1990 I I Beach sand, alluvium, ā¢ terrace...Figure 1. Simplified geological sketch-map of New Zealand. 0 20 40 60 80 100 KM l INTRODUCTION It...Morgan's "Minerals and Mineral Substances of New Zealand" was published, as NZ. Geological Survey bulletin |  | | Journal (article/letter/editorial) | | rhyolite-hosted epithermal AuĀ±Ag deposits of the Hauraki GoldĀ®eld, New Zealand Received: 25 August 1998 / Accepted:...samples from four epithermal AuĀ±Ag deposits of the Hauraki GoldĀ®eld were logged and quantiĀ®ed by vein spacing...porphyry, dacitic tuĀs and pyroclastic breccias (Golden Cross), and two in rhyolite lavas and rhyolitic tuĀs...the vein stockwork of the upper part of the Golden Cross deposit. These Cv values are consistent with...Nuclear Sciences, P.O. Box 30368, Lower Hutt, New Zealand e-mail: b.brathwaite@gns.cri.nz Fax: +64-04-5704657 |  | Simmons, S. F., Arehart, G., Simpson, M. P., Mauk, J. L. (2000) Origin of Massive Calcite Veins in the Golden Cross Low-Sulfidation, EpithermalAu-Ag Deposit, New Zealand. Economic Geology, 95 (1) 99-112 doi:10.2113/gsecongeo.95.1.99 | Journal (article/letter/editorial) | | Massive Calcite Veins in the Golden Cross Low-Sulfidation, Epithermal Au-Ag Deposit, New Zealand STUART...University of Auckland, Private Bag, 92019, Auckland, New Zealand GREG AREHART,* Institute of Geological and Nuclear...Wairakei Research Centre, Private Bag 2000, Taupo, New Zealand MARK P. SIMPSON, Geology Department, University...University of Auckland, Private Bag, 92019, Auckland, New Zealand AND JEFFREY L. MAUK Geology Department, University... Private Bag, 92019, Auckland, New Zealand Abstract At Golden Cross, andesitic lavas and volcaniclastic |  | | Journal (article/letter/editorial) | | mines, and application to the Martha AuāAg mine, Waihi, New Zealand Devin N. Castendyk a a,* , Jeļ¬rey L...Auckland, New Zealand b Geology Department, The University of Auckland, Private Bag 92019, Auckland, New Zealand...method to the Martha epithermal AuāAg mine, Waihi, New Zealand. Heterogeneous ore deposits, like Martha...albite, illite, chlorite, kaolinite, pyrite and calcite. Distribution maps of these minerals deļ¬ned 8 relatively...each association. Thin-section petrography and calcite concentrations from Sobek acid-digestions conļ¬rm |  | | Journal (article/letter/editorial) | | Gold-Silver-Base Metal Sulfide-Quartz Vein System, New Zealand: Temperature and Salinity Controls on Electrum...Nuclear Sciences, P.O. Box 31312, Lower Hutt, New Zealand Abstract The large, andesite-hosted quartz vein...veins and is associated with veinlets of quartz + calcite + pyrite Ā± adularia Ā± illite. This zone is enveloped...enveloped by an illite-quartz-adularia-chlorite-calcite-pyrite alteration zone, which grades out through...interlayered illite-smectite into a smectite-chlorite-calcite alteration zone in the least altered andesites |  | | Book | | VEND. . I ee S22 ee Printed and bound in New Zealand for Hodder and Stoughton Ltd 52 Cook Street,...acquire a mine 26 4 We stake our claim 39 5 A visit to the battery 50 6 We register our mine 60 7...in the Maratoto 102 12 Sparkes takes us to his mine 114 13 The bonanza that failed 124 14 An end...Brown for the use of her private collection of New Zealand books. Special thanks to my parents, in particular...climbing to preposterous heights and even in New Zealand the mad optimism of those who seek for gold or |  | | Journal (article/letter/editorial) | | OF VOLCANIC ROCKS: I. THE GOLDEN CROSS EPITHERMAL ORE DEPOSIT, NEW ZEALAND DAVID A. TILLICK,l DONALD...University of Auckland, Private Bag 92019, Auckland, New Zealand 2Department of Geological Sciences, The University...interstratified clay minerals in the Golden Cross epithermal deposit, New Zealand, hydrothermally altered volcanic...(Yan et al., 2001), an active analogue of the Golden Cross ore deposit, in which hydrothermal clay minerals...GEOLOGIC SETTING AND SAMPLES Golden Cross epithermal Au-Ag deposit The Golden Cross low-sulfidation epithermal |  | Brathwaite, R., Simpson, M., Faure, K., Skinner, D. (2001) Telescoped porphyry Cu-Mo-Au mineralisation, advanced argillic alteration and quartz-sulphide-gold-anhydrite veins in the Thames District, New Zealand. Mineralium Deposita, 36 (7) 623-640 doi:10.1007/s001260100182 | Journal (article/letter/editorial) | | quartz-sulphide-gold-anhydrite veins in the Thames District, New Zealand Received: 28 August 2000 / Accepted: 2 April...on the northeastern margin of the Thames district, New Zealand. The geological setting is Jurassic greywacke...Sciences Ltd., P.O. Box 31-312, Lower Hutt, New Zealand E-mail: B.Brathwaite@gns.cri.nz Present address:...University of Auckland, Private Bag 92019, Auckland, New Zealand temperatures (450 to >600 Ā°C). These hypersaline...selvages from quartz-gold veins in the Thames district. Introduction A porphyry Cu-Mo-Au prospect was |  | Vidal, Conrado Permuy, Guido, Diego M., Jovic, SebastiĆ”n M., Bodnar, Robert J., Moncada, Daniel, Melgarejo, Joan Carles, Hames, Willis (2016) The Marianas-San Marcos vein system: characteristics of a shallow low sulfidation epithermal AuāAg deposit in the Cerro Negro district, Deseado Massif, Patagonia, Argentina. Mineralium Deposita, 51 (6) 725-748 doi:10.1007/s00126-015-0633-9 | Journal (article/letter/editorial) | | sulfidation epithermal AuāAg deposit in the Cerro Negro district, Deseado Massif, Patagonia, Argentina Conrado...Berlin Heidelberg 2016 Abstract The Cerro Negro district, within the Argentinian Deseado Massif province...contains about 70 % of the AuāAg resources in the district. Mineralization consists of Upper Jurassic (155...conditions, and veins were filled by quartz and calcite during waning stages of the hydrothermal system...Patagonia . Argentina Introduction The Cerro Negro district is located at the northwestern margin of the Deseado |  | Zhai, Wei, Sun, Xiaoming, Sun, Weidong, Su, Liwei, He, Xiaoping, Wu, Youliang (2009) Geology, geochemistry, and genesis of Axi: A Paleozoic low-sulfidation type epithermal gold deposit in Xinjiang, China. Ore Geology Reviews, 36 (4) 265-281 doi:10.1016/j.oregeorev.2009.04.003 | Journal (article/letter/editorial) | | Technology of China, Heifei, 230026, PR China e Axi Gold Mine, Yining, Xinjiang, 835000, PR China b c a r t i...minerals are mainly quartz, chalcedony, illite, calcite, siderite, dolomite, adularia and laumontite. The...adularia, platy calcite, and quartz or sulļ¬de aggregates as pseudomorphs after bladed calcite in ore veins...Kelian in Indonesia, Golden Cross in New Zealand, Ladolam and Porgera in Papua New Guinea, Chinkuashih...western Tianshan orogenic belt in Xinjiang Autonomous Region, China. The wall rocks of the deposit are subaerial |  | | Journal (article/letter/editorial) | | University of Auckland, Private Bag, 92019, Auckland, New Zealand Abstract The Broadlands-Ohaaki geothermal system...illite, K feldspar (adularia), albite, chlorite, calcite, and pyrite are the main hydrothermal minerals...periphery of the upflow zone, illite, smectite, calcite, and siderite form through hydrolitic alteration...>200Ā°C); the abundance of chlorite, pyrite, and calcite varies here, but albite is absent. Geothermal production...As and Sb, each. Within production wells, platy calcite deposits as a scale at the site of first boiling |  | | Report (issue) | | States ā¢ ā¢ ā¢ ā¢ā¢ā¢ Australia ā¢ ā¢ ā¢ ā¢ā¢ā¢ ā¢ ā¢ā¢ ā¢ā¢ ā¢ New Zealand ā¢ā¢ā¢ ā¢ā¢ā¢ 0 ā¢ . ā¢ā¢ ā¢ ā¢ā¢ ā¢ .... ā¢ ā¢ā¢ ā¢ā¢ā¢ ā¢ā¢...California, and the west coast of the South Island of New Ze.a land. 1 ' r 7 ā¢ ā¢ The auriferous conglomerates...Hanson, Eng. Min. Journ., New Ybrk, 1920, 109, 194. The Mineral Industry, New York, 1919, 28, 295- 309...309, and 747- 794. Chem. and Met. Eng., New York, 1920, 22, 3-4. :it ā¢ 9 ā¢ remark, however, considerable...practically determined by the dollar excha.n ge rate in New York, ā¢ * Refining Gold Bullion with Chlorine Gas |
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Golden Cross Mine, Waitekauri, Hauraki District, Waikato Region, New Zealand