 | | Journal (article/letter/editorial) | | September–October NO. 6 Epithermal Gold-Silver Deposits of the Hauraki Goldfield, New Zealand: An Introduction DAVID...of the Hauraki Goldfield The five papers that follow describe diverse aspects of epithermal gold-silver...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...Coromandel volcanic zone (Skinner, 1986). Placer gold was first discovered near Coromandel township in |  | | Journal (article/letter/editorial) | | Adularia-Sericite Epithermal Gold-Silver Deposits in the Waihi-Waitekauri Region, New Zealand ANNE E. MORRELL,†...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...associated with pervasive hydrothermal alteration and gold-silver mineralization. Aeromagnetic derivative images...volcanic zone. An extensive (>20-km2) zone in the Waitekauri Valley is likely to be the result of multiple |  | 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,†...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. SIMPSON† 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...network that has largely been eroded. Introduction GOLD AND SILVER in adularia-sericite epithermal deposits...et al., 2003; Comstock: Hudson, 2003; Favona, New Zealand: Simpson and Mauk, 2007). Many papers describe |  | | Journal (article/letter/editorial) | | of a Large Epithermal Province: The Hauraki Goldfield, New Zealand* JEFFREY L. MAUK,1,† CHRIS M. HALL...92019, Auckland Mail Centre, Auckland 1142, New Zealand 2 Department of Geological Sciences, University...of Arizona, Tucson, Arizona 85721 Abstract The Hauraki goldfield in the Coromandel volcanic zone contains...47 ± 0.06 Ma. The southernmost deposit in the Hauraki goldfield, Muirs Reef, has adularia in quartz veins...these results indicate that mineralization in the Hauraki goldfield ranges from 16.3 Ma in the north to 2 |  | | Journal (article/letter/editorial) | | Hydrologic Evolution of the Golden Cross Epithermal Au-Ag Deposit, New Zealand MARK P. SIMPSON,† 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...rockhosted, low-sulfidation epithermal gold-silver deposit. Gold and silver ore is confined to the Empire...temporal zonation around veins, as defined along three cross sections (1,000 m long × 450 m deep), located 200 |  | | 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 Waitekauri deposits, southern Hauraki goldfield, New Zealand. Quartz veins contain...boiling is the most effective mechanism for both gold and silica precipitation. The presence of single-phase...and 242°C. Fluid inclusions in quartz from the Waitekauri deposit homogenize from 210° to 265°C and contain |  | | Journal (article/letter/editorial) | | Au-Ag Deposits: A Case Study from the Waitekauri Area, New Zealand MATHIJS A. BOODEN,† 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-quartz−rich rocks close to the Waitekauri fault. Other major elements are preferentially |  | | Journal (article/letter/editorial) | | GoldenCrossEpithermalGold-SilverDeposit,Waihi, New Zealand CORNELE. J. DE RONDE* Geology DepartmentUniversity...NewZealandGeologicalSur•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...concentrations occurin an inferred fluid up-flowzone. Gold and silverare thoughtto have precipitatedfrom c...previouslybeendescribedfromepithermal depositsin New Zealandandpossiblycontainorganicliquid(s). Oxygenisotopesof |  | 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,† 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...Auckland 2018, New Zealand Abstract The Karangahake deposit is the third largest gold producer in the...the Hauraki goldfield, Coromandel, New Zealand. Production was mainly from the Maria and Welcome/Crown |  | | Journal (article/letter/editorial) | | 817–839 The Favona Epithermal Gold-Silver Deposit, Waihi, New Zealand MARK P. SIMPSON† AND JEFFREY L...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 × 450 m deep) that transect...extensive open conduits resulted in the formation of gold- and silver-bearing colloform- and crustiform-banded |  | | Journal (article/letter/editorial) | | Composition of Altered Rocks at the Golden Cross Epithermal Au-Ag Deposit, New Zealand JEFFREY L. MAUK† AND MARK...Auckland Mail Centre, Auckland 1142, New Zealand Abstract Golden Cross is a late Miocene volcanic-hosted...assemblages located in the Coromandel peninsula, New Zealand. Gold- and Ag-bearing quartz veins occur in intensely...primary control of whole-rock geochemistry at Golden Cross, as at other volcanic-hosted epithermal deposits...geochemical zonation patterns identified at Golden Cross are very similar to those at other epithermal |  | | Journal (article/letter/editorial) | | Epithermal Orebody: The Martha Hill Deposit, Waihi, New Zealand K. BERNARD SPÖRLI1,† AND HUGH CARGILL2 1 Geology...92019, Auckland 1142, New Zealand 2 28 Norwich Avenue, New Plymouth 4310, New Zealand Abstract We describe...dominated by northeast-striking gold-silver lodes up to 30 m thick. Gold production was entirely from quartz...structural study of a major, superbly exposed epithermal gold deposit can provide much needed observational ground...The world-class Martha Hill mine in the Hauraki goldfield of New Zealand (Figs. 1, 2), with a total mined |  | | 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, • 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 |  | Hamilton, Ayrton, Campbell, Kathleen, Rowland, Julie, Browne, Patrick (2017) The Kohuamuri siliceous sinter as a vector for epithermal mineralisation, Coromandel Volcanic Zone, New Zealand. Mineralium Deposita, 52 (2) 181-196 doi:10.1007/s00126-016-0658-8 | Journal (article/letter/editorial) | | epithermal mineralisation, Coromandel Volcanic Zone, New Zealand Ayrton Hamilton 1 & Kathleen Campbell 1 & Julie...largest known fossil hot-spring system in the Hauraki Goldfield, a 200 × 40 km volcanic terrain with...3–5.6 Ma within the Coromandel Volcanic Zone, New Zealand. The sinter is associated with rhyolite and ignimbrite...Auckland, Private Bag 92019, Auckland 1142, New Zealand 2 Institute of Earth Sciences and Engineering...University of Auckland, Private Bag 92019, Auckland, New Zealand deposits contain the high-temperature (>75 °C) |  | | Journal (article/letter/editorial) | | rhyolite-hosted epithermal Au±Ag deposits of the Hauraki Gold®eld, New Zealand Received: 25 August 1998 / Accepted:...samples from four epithermal Au±Ag deposits of the Hauraki Gold®eld were logged and quanti®ed by vein spacing...porphyry, dacitic tus and pyroclastic breccias (Golden Cross), and two in rhyolite lavas and rhyolitic tus...the vein stockwork of the upper part of the Golden Cross deposit. These Cv values are consistent with...larger veins contain signi®cant volumes of high-grade gold mineralisation. The higher chemical Editorial handling: |  | | Book | | _ Maratoto Gold — op). ANN BALE 4 ie : i a PRESTON PUBLIC LIBRARIES This book latest date sta...30118 ~ATMA : OOK NO. 00056163 3 Maratoto Gold by ANN BALE wen AS a nS Ne ,m jhy os Vie...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 |  | | Journal (article/letter/editorial) | | Structural Evolution of the Golden Cross Epithermal Au-Ag Deposit, New Zealand MICHAEL J. BEGBIE,†,* Department... University of Otago, P.O. Box 56, Dunedin, New Zealand K. BERNHARD SPÖRLI, 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...of a faultfracture–hosted epithermal vein system. Gold-silver mineralization was mined in two areas: the |  | | Journal (article/letter/editorial) | | constraints from the Broken Hills deposit, Hauraki Goldfield, New Zealand Helen A. Cocker & Jeffrey L. Mauk &...rhyolite-hosted epithermal deposit in the Hauraki Goldfield of New Zealand. The opaque minerals include pyrite...other adulariasericite epithermal deposits in the Hauraki Goldfield and elsewhere worldwide. Broken Hills...electrum. Broken Hills is the only deposit in the Hauraki Goldfield where uytenbogaardtite and petrovskaite...Auckland 1142, New Zealand e-mail: J.Mauk@auckland.ac.nz S. D. C. Rabone Broken Hills Gold Co, PO Box 99 |  | 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) | | Calcite Veins in the Golden Cross Low-Sulfidation, Epithermal Au-Ag Deposit, New Zealand STUART F. SIMMONS...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) | | The Waihi Epithermal Gold-Silver-Base Metal Sulfide-Quartz Vein System, New Zealand: Temperature and Salinity...Nuclear Sciences, P.O. Box 31312, Lower Hutt, New Zealand Abstract The large, andesite-hosted quartz vein...salinity following dilution favored the transport of gold, silver, and copper as hydrosulfide complexes and...Introduction THE WAIHI deposit is a large epithermal gold-silver-base metal sulfide-quartz vein system located...volcanic zone and associated Hauraki goldfield in the North Island of New Zealand (Fig. 1). At Waihi, an extensive |  | | Journal (article/letter/editorial) | | mines, and application to the Martha Au–Ag mine, Waihi, New Zealand Devin N. Castendyk a a,* , Jeffrey L...Auckland, New Zealand b Geology Department, The University of Auckland, Private Bag 92019, Auckland, New Zealand...method to the Martha epithermal Au–Ag mine, Waihi, New Zealand. Heterogeneous ore deposits, like Martha...nuisances depending on lake water chemistry. Many recent mine management strategies favor 0883-2927/$ - see front...into public amenities that will exist long after mine closure, as recreational areas, theme parks, scientific |  | | 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 |  | | Journal (article/letter/editorial) | | poly-metamorphic granulites from the Enderby Land region of Antarctica have demonstrated some equally exotic... F~IEND Kear, D. (Ed.). Mineral Deposits of New Zealand, Monograph 13, Australasian Institute of Mining...summarizing the results of mineral exploration in New Zealand from 1974 to 1987; it effectively supplements...supplements the second edition of Economic Geology of New Zealand by the late Professor Williams published in 1974...REVIEWS and mineral prospecting companies in New Zealand since Williams went to press, and the scientific |  | | Journal (article/letter/editorial) | | REVIEWS and mineral prospecting companies in New Zealand since Williams went to press, and the scientific...Director of the New Zealand Geological Survey and Director General of the New Zealand Department of Scientific...applicable. Included are papers on various gold and gold-silver prospects, sulphur and halloysite deposits...setting of mineralization in New Zealand, the Hauraki goldfield, placer gold mining, and non-metallic minerals...the reopening of a major gold-silver (electrumacanthite) mine in the Hauraki epithermal goldfield, which |
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