 | 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,â ...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. SIMPSONâ 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...et al., 2003; Comstock: Hudson, 2003; Favona, New Zealand: Simpson and Mauk, 2007). Many papers describe...prospects in the Waitekauri area of the southern Hauraki goldfield, North Island, New Zealand (Figs. 1, 2) |  | | Journal (article/letter/editorial) | | Hydrologic Evolution of the Golden Cross Epithermal Au-Ag Deposit, New Zealand MARK P. SIMPSON,â 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 Ă 450 m deep), located 200...calcite veins crosscut mineralized quartz veins. Kaolinite ± pyrite veinlets, together with rare, very local |  | | Journal (article/letter/editorial) | | GoldenCrossEpithermalGold-SilverDeposit,Waihi, New Zealand CORNELE. J. DE RONDE* Geology DepartmentUniversity...NewZealandGeologicalSurâąetd, 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...d, as hydrothermalactivitywaned,precipitated kaolinite ñ hematite ñ jarosite. Fluid inclusionstudiesrevealthat...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,â 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-quartzârich 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,â 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. SIMPSONâ 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 Ă 450 m deep) that transect...wall of the Favona and Cowshed veins. Late-stage kaolinite, cristobalite, and rare alunite locally overprint |  | | 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...and 242°C. Fluid inclusions in quartz from the Waitekauri deposit homogenize from 210° to 265°C and contain...The Hauraki goldfield is located in the Coromandel Peninsula of the North Island of New Zealand (Fig |  | | Journal (article/letter/editorial) | | Composition of Altered Rocks at the Golden Cross Epithermal Au-Ag Deposit, New Zealand JEFFREY L. MAUKâ 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 |  | | 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, âą 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) | | Structural Evolution of the Golden Cross Epithermal Au-Ag Deposit, New Zealand MICHAEL J. BEGBIE,â ,* Department... University of Otago, P.O. Box 56, Dunedin, New Zealand K. BERNHARD SPĂRLI, 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...overlapped in time, at least in part. Host rocks at Golden Cross dip 50° to the southeast. If the vein system |  | | 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 |  | | 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) | | mines, and application to the Martha AuâAg mine, Waihi, New Zealand Devin N. Castendyk a a,* , JeïŹrey L...Auckland, New Zealand b Geology Department, The University of Auckland, Private Bag 92019, Auckland, New Zealand...method to the Martha epithermal AuâAg mine, Waihi, New Zealand. Heterogeneous ore deposits, like Martha...as quartz, adularia, albite, illite, chlorite, kaolinite, pyrite and calcite. Distribution maps of these...nuisances depending on lake water chemistry. Many recent mine management strategies favor 0883-2927/$ - see front |  | 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) | | 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...volcanic zone and associated Hauraki goldfield in the North Island of New Zealand (Fig. 1). At Waihi, an extensive...(1924). Recent exploration and mining have provided new data and sample material for geological and geochemical...steam-heated ground water. 50km Main map AUCKLAND HAURAKI GOLDFIELD WAIHI NORTH ISLAND A UR HA WELLINGTON |  | 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...by an extensive pyrophyllitediaspore-dickite-kaolinite assemblage that overlaps with the upper part of...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 °C). These hypersaline |  | Vidal, Conrado Permuy, Guido, Diego M., Jovic, SebastiĂĄn 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 AuâAg 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 AuâAg 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 AuâAg resources in the district. Mineralization consists of Upper Jurassic (155...Patagonia . Argentina Introduction The Cerro Negro district is located at the northwestern margin of the Deseado...(1999) to define the region as an AuâAg metallogenic province. Since âŒ2000, the region has produced 4.9 Moz |  | Xiao, ChangHao, Wang, QingFei, Li, GongJian, Zhou, XingZhi, Zhao, Yan (2017) Subduction-related hot spring-type gold mineralization in the central Tengchong block, southwestern China. Ore Geology Reviews, 90. 987-997 doi:10.1016/j.oregeorev.2016.12.011 | Journal (article/letter/editorial) | | a breccia zone, a kaolinite and illite zone, and 5 a chlorite, illite, kaolinite zone. The gas phase...2005; 37 Peters, 1990), Porgera and Lihir in Papua New Guinea (Richards et al., 1991; White et 38 al....the Rehai geothermal region in the Tengchong 55 block. In this geothermal region, the ancient Lianghe...and the Lianghe deposit in the Rehai geothermal region, central 58 Tengchong block were investigated...zone of Indian plate. The oldest stratum in the region is the Proterozoic 68 Gaoligongshan Group, consisting |  | | Journal (article/letter/editorial) | | University of Auckland, Private Bag, 92019, Auckland, New Zealand Abstract The Broadlands-Ohaaki geothermal system...mineral zonation, which is the focus of this paper. New data are presented on the occurrence and abundance...1 of about 20 known hydrothermal systems in the region (Fig. 1). These systems are liquid dominated and...Island, New Zealand. Widespread volcanism and hydrothermal activity have characterized the region for the...field showing well locations used to construct cross sections (Figs. 2 and 5). The Broadlands and Ohaaki |  | Andrada de Palomera, Pablo, van Ruitenbeek, Frank J.A., van der Meer, Freek D., FernĂĄndez, RaĂșl (2012) Geochemical indicators of gold-rich zones in the La Josefina epithermal deposit, Deseado Massif, Argentina. Ore Geology Reviews, 45. 61-80 doi:10.1016/j.oregeorev.2012.01.001 | Journal (article/letter/editorial) | | et al., 1999), which is recognized as a valuable region for gold exploration. Most of the Au â Corresponding...investigated by drilling. The aim of drilling is to cross the mineralized veins at different vertical levels;...is always anomalous. Therefore, each deposit or district should be studied separately to know which elements...the La JoseïŹna district (Fig. 1). However, the predominant formation in the district, and the only one...2002b). Pervasive siliciïŹcation and abundant kaolinite, typically produced by steam-heated waters in |  | Harijoko, Agung, Watanabe, Koichiro, Motomura, Yoshinobu, Izawa, Eiji (2002) Gold-bearing Quartz Veins and Hydrothermal Alteration of the Paleozoic Epithermal System in the Francis Creek Area, North Queensland, Australia. Resource Geology, 52 (4) 353-358 doi:10.1111/j.1751-3928.2002.tb00145.x | Journal (article/letter/editorial) | | 1990), Gunung Pongkor (Milesi et al., 1999) and Golden Cross (Simpson et al., 2001). However, there are some...Territory, SA: Southern Australia, Qld: Queensland, NSW: New South Wales, Vic: Victoria. 353 354 A. HARIJOKO...Legend Legend Interstratified illite/smectite Kaolinite Illite Albite Chlorite Silica body RyF LT SS...the vein. Such an alteration signature may be district wide (Hedenquist et al., 2000). The argillic zone...consist of quartz, albite, chlorite, calcite and kaolinite. The difference between those zones is the occurrence |  | | Journal (article/letter/editorial) | | Auckland, Auckland Mail Centre, Auckland 1142, New Zealand Abstract Volcanic rocks hosting quartz ± calcite...directly above this point at a K/Al value of 1, and kaolinite and chlorite, Al-bearing phases that contain no...Interlayered illite-smectite Andesite s Ca los K, Na, Kaolinite Chlorite 0 0 Ca,Na-smectite 0.2 0.4 Basalt...fresh volcanic rocks of the Taupo volcanic zone, New Zealand (Graham et al., 1995). line, the dominant K-bearing...plot along the line of slope 1 likely contain kaolinite and/or Al-bearing chlorite. The minerals plotted |  | Kesler, S. E., Hall, C. M., Russell, N., Pinero, E., Sanchez, R. C., Perez, M. R., Moreira, J. (2004) Age of the Camaguey Gold-Silver District, Cuba: Tectonic Evolution and Preservation of Epithermal Mineralization in Volcanic Arcs. Economic Geology, 99 (5) 869-886 doi:10.2113/gsecongeo.99.5.869 | Journal (article/letter/editorial) | | pp. 869â886 Age of the CamagĂŒey Gold-Silver District, Cuba: Tectonic Evolution and Preservation of...where batholiths are widely exposed. The CamagĂŒey district in central Cuba violates this tenet and provides...create and expose epithermal deposits. The CamagĂŒey district hosts the Jacinto and Florencia low-sulfidation...low-sulfidation vein deposits and the Deseada and Golden Hill high-sulfidation prospects, all of which are within...CamagĂŒey batholith and stand above the paleosurface. New Ar-Ar age measurements indicate that Jacinto-type |  | | Journal (article/letter/editorial) | | SCIENCE Vol. 304, No. 5, 2003 947 971 COPSE: A new model of biogeochemical cycling over Phanerozoic...Chemostratigraphy of flood basalts in the GarzĂȘ-Litang region and Zongza block: Implications for western extension...Mesozoic intrusive complexes in the Xuzhou-Huainan Region, central China: Constraints from SHRIMP zircon...Fleet Empressite, AgTe, from the Empress-Josephine mine, Colorado, U.S.A.: Composition, physical properties...bedrock sources for the Estero Hondo alluvial gold mine, western EcuadorâM. Potter and M.T. Styles 0361-0128/98/000/000-00 |
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