 | | Journal (article/letter/editorial) | | Epithermal Gold-Silver Deposits of the Hauraki Goldfield, New Zealand: An Introduction DAVID A. JOHN†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...discovery of Au-bearing quartz veins in 1861 at the site of the Kapanga mine (Fig. 1C). Prospecting elsewhere |  | 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) | | Epithermal Gold-Silver Deposits in the Waihi-Waitekauri Region, New Zealand ANNE E. MORRELL,†,* 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) | | 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...weaker toward the east. Alteration minerals include quartz, adularia, albite, chlorite, pyrite, illite, interstratified...have diverse mineralogy with zoned distributions. Quartz veins dominate at Sovereign and Jubilee, whereas |  | | 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...12 Ma. In the southern province, adularia from quartz veins at the Maratoto deposit provide a preferred...40Ar/39Ar age of 6.41 ± 0.04 Ma, and adularia from a quartz vein at the Sovereign deposit yields a preferred |  | | 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...temporal zonation around veins, as defined along three cross sections (1,000 m long × 450 m deep), located 200...sections replacement quartz, chlorite, and pyrite are ubiquitous with the abundance of quartz veinlets increasing |  | | 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 ÂWaitekauri deposits, southern Hauraki goldfield, New Zealand. Quartz veins contain colloform...crustiform bands that alternate with coarse-grained quartz and amethyst. The ore mineralization occurs only...concentrations with values up to 231 ppm in Al-free quartz may reflect an accidentally captured mineral phase |  | | 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...Silica was gained in adularia-quartz−rich rocks close to the Waitekauri fault. Other major elements are |  | | 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...subsequentboiling. Alterationmineralsare dominatedby clay,quartz,adularia,calcite,and pyrite. Hydrothermalclaysshowa...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...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. SIMPSON†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 × 450 m deep) that transect...Favona, Cowshed, and Amaranth veins. Hydrothermal quartz and pyrite are ubiquitous. Adularia is widespread |  | | 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...with quartz ± calcite ± adularia ± illite assemblages located in the Coromandel peninsula, New Zealand...Zealand. Gold- and Ag-bearing quartz veins occur in intensely altered flows and lesser pyroclastic volcanic...geochemistry at Golden Cross, as at other volcanic-hosted epithermal deposits associated with quartz ± calcite |  | | 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...to 30 m thick. Gold production was entirely from quartz veins. The mineralization is embedded in the following...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 |  | | 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) | | 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 electrum-bearing quartz veins. The most voluminous of these stages were quartz-adularia veins with |  | | Journal (article/letter/editorial) | | distribution of quartz veins in andesite- and rhyolite-hosted epithermal Au±Ag deposits of the Hauraki Gold®eld...Gold®eld, New Zealand Received: 25 August 1998 / Accepted: 23 December 1999 Abstract Vein distributions in...samples from four epithermal Au±Ag deposits of the Hauraki Gold®eld were logged and quanti®ed by vein spacing...porphyry, dacitic tu€s and pyroclastic breccias (Golden Cross), and two in rhyolite lavas and rhyolitic tu€s...the vein stockwork of the upper part of the Golden Cross deposit. These Cv values are consistent with |  | | 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) | | 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...92019, Auckland Mail Centre, Auckland 1142, New Zealand e-mail: J.Mauk@auckland.ac.nz S. D. C. Rabone |  | 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) | | 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...the most abundant minerals in the wall rocks as quartz, adularia, albite, illite, chlorite, kaolinite...fresh-argillic, weathered-argillic, oxidized, potassic, quartz veins, and post-mineralization deposits. X-ray |  | | Journal (article/letter/editorial) | | Epithermal Gold-Silver-Base Metal Sulfide-Quartz Vein System, New Zealand: Temperature and Salinity Controls...Box 31312, Lower Hutt, New Zealand Abstract The large, andesite-hosted quartz vein system at Waihi contains...pervasive adularia-quartz-illite-chlorite-pyrite alteration zone bounds the larger quartz veins and is associated...veinlets of quartz + calcite + pyrite ± adularia ± illite. This zone is enveloped by an illite-quartz-adula...altered andesites. The formation of the adularia, quartz, chlorite, calcite, pyrite, and some illite in |  | | 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) | | alteration and quartz-sulphide-gold-anhydrite veins in the Thames District, New Zealand Received: 28 August...advanced argillic alteration cap and epithermal quartz-sulphidegold-anhydrite veins, are telescoped within...on the northeastern margin of the Thames district, New Zealand. The geological setting is Jurassic greywacke...‹biotite alteration are overprinted by phyllic quartz-sericite-pyrite or intermediate argillic chlorite-sericite...chlorite-sericite alteration assemblages. Some copper occurs in quartz-magnetitechlorite-pyrite-chalcopyrite veinlets |  | | 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...geological setting of mineralization in New Zealand, the Hauraki goldfield, placer gold mining, and non-metallic...a major gold-silver (electrumacanthite) mine in the Hauraki epithermal goldfield, which is associated...pit at Waihi, and another large mine is planned for the Golden Cross prospect in the same field. Both |
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Golden Cross Mine, Waitekauri, Hauraki District, Waikato Region, New Zealand