 | 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) | | 102, pp. 817–839 The Favona Epithermal Gold-Silver Deposit, Waihi, New Zealand MARK P. SIMPSON† AND JEFFREY...Mail Centre, Auckland 1142, New Zealand Abstract The Favona deposit is a new epithermal vein discovery...million oz (Moz) Ag), in the Hauraki goldfield of New Zealand. The concealed Favona vein is hosted in late...the Favona, Cowshed, and Amaranth veins. Hydrothermal quartz and pyrite are ubiquitous. Adularia is widespread...albite adjacent to the Amaranth vein at depth. Both adularia and albite are variably replaced by illite, which |  | | 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...Abstract The Hauraki goldfield in the Coromandel volcanic zone contains approximately 50 adularia-sericite...goldfield, adularia from Paritu yields a single 40Ar/39Ar plateau date of 16.32 ± 0.13 Ma, and adularia from...province, adularia from the Ohui deposit gives a preferred 40Ar/39Ar age of 8.29 ± 0.25 Ma, adularia from |  | | 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...quartz veins in 1861 at the site of the Kapanga mine (Fig. 1C). Prospecting elsewhere on the Coromandel |  | | Journal (article/letter/editorial) | | of Adularia-Sericite Epithermal Gold-Silver Deposits in the Waihi-Waitekauri Region, New Zealand ANNE...92019, Auckland Mail Centre, Auckland 1142, New Zealand Abstract Aeromagnetic, airborne radiometric...surface gravity data from the adularia-sericite epithermal province of the Hauraki goldfield have delineated...in the core of alteration zones in the form of adularia and illite. A broad K/Th anomaly correlates with...Waitekauri-Maratoto area. Gravity data in the Waihi district define a unique, double-peaked, 50-gravity |  | | Journal (article/letter/editorial) | | Chemistry of Adularia-Sericite Epithermal Au-Ag Deposits of the Southern Hauraki Goldfield, New Zealand* Mark...University of Auckland, Private Bag 92019, Auckland, New Zealand 2 U.S. Geological Survey, P.O. Box 25046, MS-973...inclusions in adularia-sericite Au-Ag epithermal veins from the Karangahake, Martha, Favona, and Waitekauri...Waitekauri deposits, southern Hauraki goldfield, New Zealand. Quartz veins contain colloform to crustiform...The Hauraki goldfield is located in the Coromandel Peninsula of the North Island of New Zealand (Fig |  | | Journal (article/letter/editorial) | | Epithermal Orebody: The Martha Hill Deposit, Waihi, New Zealand K. BERNARD SPÖRLI1,† AND HUGH CARGILL2 1...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...levels of the mine similar to the downward disappearance of microcrystalline quartz and adularia (Brathwaite |  | | Journal (article/letter/editorial) | | and Prospects of the Waitekauri Area, Hauraki Goldfield, New Zealand MARK P. SIMPSON† AND JEFFREY L. MAUK...Auckland, New Zealand Abstract The Waitekauri area of the Hauraki goldfield, New Zealand, contains several...several adularia-sericite epithermal Au-Ag deposits and prospects. From west to east, the area contains...the east. Alteration minerals include quartz, adularia, albite, chlorite, pyrite, illite, interstratified...Many of these minerals have zoned distributions; adularia is widespread at Sovereign, but is restricted |  | | Journal (article/letter/editorial) | | minerals in adularia-sericite epithermal deposits: constraints from the Broken Hills deposit, Hauraki Goldfield...Goldfield, New Zealand Helen A. Cocker & Jeffrey L. Mauk & Stuart D. C. Rabone Received: 13 October 2011...Springer-Verlag 2012 Abstract The 7.1 Ma Broken Hills adularia-sericite Au–Ag deposit is currently the only producing...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 |  | | Journal (article/letter/editorial) | | at the Golden Cross Epithermal Au-Ag Deposit, New Zealand JEFFREY L. MAUK† AND MARK P. SIMPSON School of...92019, Auckland Mail Centre, Auckland 1142, New Zealand Abstract Golden Cross is a late Miocene volcanic-hosted...± calcite ± adularia ± illite assemblages located in the Coromandel peninsula, New Zealand. Gold- and...epithermal deposits associated with quartz ± calcite ± adularia ± illite assemblages, is the destruction of igneous...which reflect the replacement of plagioclase by adularia and/or illite. Calcium depletion also reflects |  | 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) | | particularly IS epithermal orebodies in any particular district, irrespective of whether or not paleosurface features...Silicification, quartz-adulariaillite Quartz, chalcedony, adularia Sulfide abundance Sulfidation-state indicators...Quartz, calcite, manganoan carbonates, rhodonite, adularia Moderate (5–30 vol.%) Tetrahedrite, chalcopyrite...geothermal system, Taupo Volcanic Zone, North Island, New Zealand (see Simmons et al. 1993) The reactive H2S-bearing...the Ladolam LS gold deposit, Lihir Island, Papua New Guinea, are represented at surface by steaming ground |  | | Journal (article/letter/editorial) | | Auckland 1142, New Zealand Abstract Volcanic rocks hosting quartz ± calcite ± adularia ± illite epithermal...identification of important hydrothermal minerals (e.g., adularia, illite, smectite) and alteration processes that...around precious metal epithermal quartz ± calcite ± adularia ± illite deposits (e.g., Buchanan, 1981; White...boiling, in particular, causes precipitation of adularia (Browne and Ellis, 1970; Simmons and Browne, 2000)...found around precious metal quartz ± calcite ± adularia ± illite epithermal orebodies (Fig. 1). With increasing |  | | Journal (article/letter/editorial) | | Sensitivity analyses in pit lake prediction, Martha mine, New Zealand 2: Geochemistry, water–rock reactions, and...Department, State University of New York, College at Oneonta, Oneonta, New York, 13820, USA b School of...Tamaki Campus, Private Bag 92019, Auckland, New Zealand Received 18 December 2006; received in revised...accepted 6 June 2007 Editor: D. Rickard Abstract Mine managers and regulators use geochemical predictions...model of a proposed pit lake at the Martha Au Mine, New Zealand. Our hypothesis was that subaqueous pyrite |  | Peng, Yi-Wei, Gu, Xue-Xiang, Cheng, Wen-Bin, Zhao, Xiao-Bo, Wang, Guan-Nan, Lu, Liang-Tao, Han, Jian-Min (2018) Metallogenesis of the Late Palaeozoic Axi-Tawuerbieke Au-Pb-Zn district in the Tulasu Basin, Western Tianshan, China: Constraints from geological characteristics and isotope geochemistry. Geological Journal, 53 (6) 3030-3050 doi:10.1002/gj.3141 | Journal (article/letter/editorial) | | of the Late Palaeozoic Axi–Tawuerbieke Au–Pb–Zn district in the Tulasu Basin, Western Tianshan, China:...Technology), Chengdu, Sichuan, China 4 Axi Gold Mine, Yining, Xinjiang, China The Tulasu Basin is an...circulating meteoric waters. The occurrence of adularia, Correspondence Xue‐Xiang Gu, State Key Laboratory...deposit However, most previous studies on this ore district primarily focus types continuum on individual...documented in the previous literature. Based on a new Basin, hosts the Axi, Tabei, and Tawuerbieke deposits |  | | Journal (article/letter/editorial) | | Controls on Hydrothermal Flow, Taupo Volcanic Zone, New Zealand: Implications for the Formation of Epithermal...Auckland, New Zealand 2 Hot Solutions Ltd, PO Box 32-125, Devonport, Auckland, New Zealand Abstract...geothermal systems of the Taupo Volcanic Zone, New Zealand. Most geothermal systems occur within a rifted... CONTROLS ON HYDROTHERMAL FLOW, TAUPO VOLCANIC ZONE, NEW ZEALAND interpret their significance relative to epithermal...gold-silver−bearing epithermal veins, filled with quartz, adularia, and/or calcite gangue minerals. For clarity a |  | | Journal (article/letter/editorial) | | and minor bornite, occurs in quartz–calcite–(adularia) veins in the Kingston deposit associated with...Tonga arc and reversing to eastward subduction at New Hebrides [25]. The NE-trending Hunter Fracture Zone...deposit (Papua New Guinea) contain 14–133 ppm Cu, 4–42 ppm Pb, Porgera gold deposit (Papua New Guinea) contain...Porgera Porgera gold gold deposit, deposit, is Papua New New Guinea Guinea [5], [5], and and shoshonitic shoshonitic...mineralization consists primarily of dense quartz, adularia, calcite, and pyrite veins (Figure 8b,c). Pyrite |  | Páez, G.N., Ruiz, R., Guido, D.M., Ríos, F.J., Subias, I., Recio, C., Schalamuk, I.B. (2016) High-grade ore shoots at the Martha epithermal vein system, Deseado Massif, Argentina: The interplay of tectonic, hydrothermal and supergene processes in ore genesis. Ore Geology Reviews, 72. 546-561 doi:10.1016/j.oregeorev.2015.07.026 | Journal (article/letter/editorial) | | of the Martha mine epithermal deposit (Deseado Massif, Patagonia, Argentina). The mine was active from...Ag–As–Sb sulfosalts and Cu–Pb–Zn sulfides, with an adularia-quartzillite gangue. Hydrothermal alteration is...vein walls; five alteration zones were defined: an adularia zone close to the veins, an intermediate halo...characterize the vein system. 40Ar–39Ar dating in adularia crystals constrains the hydrothermal activity...highest-grade portions of the ore-shoots found at the mine. Finally, a post-mineral supergene phase defined |  | Obushkov, A. V., Struzhkov, S. F., Natalenko, M. V., Ryzhov, O. B., Kryazhev, S. G., Radchenko, Yu. I. (2010) Geology and mineralogy of ore at the hidden Engteri Au-Ag deposit, the Magadan Region. Geology of Ore Deposits, 52 (6) 459-478 doi:10.1134/s1075701510060036 | Journal (article/letter/editorial) | | at the Hidden Engteri Au–Ag Deposit, the Magadan Region A. V. Obushkova, S. F. Struzhkova, M. V. Natalenkoa...Received May 12, 2010 Abstract—The Engteri is a new hidden Au–Ag deposit in the Russian segment of the...brecciated texture has the best prospect for revealing new ore bodies. The Engteri deposit allowed us to outline...deposits in the United States, the Favona deposit in New Zealand, the Hishikari deposit in Japan, etc...development will prolong the life of the Julietta Mine by a few years. The Enteri deposit has been chosen |  | | Journal (article/letter/editorial) | | intrusion-centered hydrothermal systems and reflect district-scale magmatism (Simmons et al., 2005; John et...assemblages for the first type typically include quartz, adularia, calcite, and illite; representative deposits...deposits, commonly referred to as the quartz-adularia type, are generally synonymous with the low- to intermediate-sulfidation...with the Bodie, Aurora, Comstock Lode, Martha Hill-Favona-Karangahake-Golden Cross-Thames (hereafter collectively...numbers of samples available for each deposit or district vary widely and are outlined in the primary data |  | Nadeau, Olivier, Mick, Emily, Robidoux, Philippe, Grassa, Fausto, Brusca, Lorenzo, Voinot, Alexandre, Leybourne, Matthew I. (2021) Lithium isotopes and Cu-Au concentrations in hydrothermal alterations from Solfatara Volcano, Campi Flegrei caldera complex, and La Fossa volcano, Vulcano Island, Italy: Insights into epithermal ore forming environments. Ore Geology Reviews, 130. 103934pp. doi:10.1016/j.oregeorev.2020.103934 | Journal (article/letter/editorial) | | Engineering, Hubei Province, Wuhan City, Hongshan District, Lumo Lu 388, 430074, China b McGill University...te distally, to smectite-chlorite, and illite-adularia proximally, all of which are capped by blankets...hydrothermal systems. During hydrothermal alteration, most new minerals (e.g., clay minerals, micas) preferentially...2011), and increased seismicity and the opening of new fractures in the Solfatara caldera in 1982–1984 allowed...for example, up to 33 wt% at the North Island, New Zealand (Jones and Renaut, 2004). The amorphous state |  | | Book | | appointments at the Astrobiology Centre, University of New South Wales, Sydney, and the China University of...in Europe, southern Africa, South East Asia, New Zealand, the southwest Pacific, China, Greenland and... Contents 4.6.5 Candelaria, Punta Del Cobre District, Chilean Coastal Belt. . . . . . . . . . . . ...2 Ladolam Epithermal System, Lihir Island, Papua New Guinea . . . . . . . . . . . . . . . . . . . . ..... . . . . . . . . 5.3.3 Hauraki Goldfield, Coromandel Peninsula, New Zealand 5.3.4 The Epithermal Systems |  | | Conference Proceedings (Volume) | | Cover photograph: View of the Aitik open pit copper mine in the very north of Sweden. Mining operations started... Garuti, A. Rojas-Purón, F. Longo & A. Chang A new mineralogical method for the determination of metal...mineralisation of the Riwaka Complex, Northwest Nelson, New Zealand . . ..........................................River–Uchi–Oxford-Stull–La Grande-Eastmain superdomain: a new metallotect within the Superior Province ..........Platinum mineralization at Owendale, NSW, Australia: new insights into the genesis of Pt mineralization in |  | | Journal (volume) | | the cover: Map of the Carpathian region with type localities of new mineral species, rocks, fossil resins...Natural History Museum, entitled “There is something new under the earth”, organised on the occasion of IMA2010....1 AM11 Gem materials: Origins, properties, and new analytical challenges .....................................245 EG52 Platinum-group minerals in the new millennium..................................................................319 EM61 Mineralogy of mine wastes and contaminated soil................... |
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