 | 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 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...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) | | 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...conditions. Veins and alteration minerals at Golden Cross formed in the shallow part (<400 m) of a hydrothermal |  | | 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 and Cowshed veins. Late-stage kaolinite, cristobalite, and rare alunite locally overprint the above |  | | 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...previouslybeendescribedfromepithermal depositsin New Zealandandpossiblycontainorganicliquid(s). Oxygenisotopesof...south. Also, the subsurfacesection of Golden Cross THE Golden Crossgold-silver deposit is located in |  | | 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 |  | | 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 |  | | Journal (article/letter/editorial) | | carbonate rocks from the Bingham Canyon, Utah mining district. Replacement of the carbonate rock appears to...fractures on the No. 6 level of the Highland Boy mine, Bingham Canyon, Utah. The mineralized fractures...replacement ore on the 5.5-level of the Highland Boy mine, Bingham Canyon, Utah. Unreplaced zones are white...carbonate-replacement mineralization. Numerous cross-linking, mineralized fractures are also evident...Murray vein 950-level Tonopah-Extension mine, Tonopah mining district. Bands of alternating sulfides and rhodochrosite |  | Faure, K., Matsuhisa, Y., Metsugi, H., Mizota, C., Hayashi, S. (2002) The Hishikari Au-Ag Epithermal Deposit, Japan: Oxygen and Hydrogen Isotope Evidence in Determining the Source of Paleohydrothermal Fluids. Economic Geology, 97 (3) 481-498 doi:10.2113/gsecongeo.97.3.481 | Journal (article/letter/editorial) | | Nuclear Sciences, P.O. Box 31-312, Lower Hutt, New Zealand. ‡ Deceased † 0361-0128/01/3242/481-18 $6.00...clays, quartz-smectite, cristobalite-smectite-kaolinite, and alunite-cristobalite-tridymite (Izawa et al...Shosen Shimanto Supergroup sediments FIG. 4. Cross section of the Honko and Sanjin ore zones at Hishikari...vertically zoned (I = alunite-cristobalite-tridymite, II = cristobalite-smectite-kaolinite, III = quartz-smectite...detect the presence of silica polymorphs (e.g., cristobalite, chalcedony) other than quartz that are soluble |  | | Journal (article/letter/editorial) | | Alteration and Mineralization in the Comstock District, Nevada DONALD M. HUDSON† 1540 Van Petten Street...metal deposits of the world-renowned Comstock district of western Nevada constitute one of several superimposed...superimposed Miocene hydrothermal systems. In the district, Mesozoic metasedimentary and igneous rocks are...Blanket-like cristobalite, alunite, and kaolinite alteration exposed at the periphery of the district may be...elsewhere in the district. Pliocene to Holocene reactivation of faults has disrupted the district, redistributing |  | | Journal (article/letter/editorial) | | epithermal gold mineralization in the Rosario–Bunawan district, East Mindanao Ridge, Philippines Jochen Kolb...Springer-Verlag 2009 Abstract The Rosario–Bunawan district is situated about 200 km north of Davao City,...Southern Philippines. Gold is produced from the Co-O mine, containing about 2,034,000 t of ore at 10.9 g/t...mineralization in the Rosario–Bunawan district and the Co-O mine is confined to narrow (0.2–4 m) low-sulfidation...near horizontal N–S-oriented vein opening (D2). New D2 extensional shear or shear veins formed in the |  | | Journal (article/letter/editorial) | | formed after amorphous silica, probably with cristobalite ao.d opal as intermediate phases (Fournier,...scale according to the texture being examined, A new categorisation based on the geometry of quartz addition...comb quartz from tile Black Flag P b - Z n - A u mine near Racetrack, Western Australm (Scale: natural...rock from the epithermal Martha Hill gold mine, New Zealand. (Scale bar in centimetres. QUARTZ VEIN...zone of fibrous growth from the Wattle Gully gold mine, Victoria, Australia, where the inclusion trails |  | John, D. A., Hofstra, A. H., Fleck, R. J., Brummer, J. E., Saderholm, E. C. (2003) Geologic Setting and Genesis of the Mule Canyon Low-Sulfidation Epithermal Gold-Silver Deposit, North-Central Nevada. Economic Geology, 98 (2) 425-463 doi:10.2113/gsecongeo.98.2.425 | Journal (article/letter/editorial) | | Phelps Dodge Tyrone, Inc., P.O. Box 571, Tyrone, New Mexico 88065 AND ERIC C. SADERHOLM * Newmont Gold...Company, Yanacocha, Peru Abstract The Mule Canyon mine exploited shallow, low-sulfidation, epithermal Au-Ag...rift (White and Hedenquist, 1990). THE MULE CANYON mine exploited low-sulfidation epithermal Au-Ag deposits...(Quaternary) Olivine basalt (Miocene) Mule Canyon Mine 2 Trachydacite (Miocene) 4 3 5 8 Muleshoe fault...(Oligocene) Sedimentary rocks (Paleozoic) Contact Barite mine Fault, dotted where concealed. Ball on downthrown |  | | Journal (article/letter/editorial) | | few mineral precipitates (consisting mainly of cristobalite and smectite), suggesting that fluid activities...depth of 110 to 125 m. The silica mineral is cristobalite at depths shallower than 110 m, but this is...Institute of Geological and Nuclear Sciences, Ltd, New Zealand. The 87Sr/86Sr ratios are reported relative to...Institute of Geological & Nuclear Sciences Ltd, New Zealand. Abbreviations: Adu, adularia; Cal, calcite;...Survey Team (1955) On the Subterranean heat in Noya district, Oita prefecture. Bull. Geol. Surv. Jpn., 6, 551– |  | | Report (volume) | | Geology and Metallogeny of the Carpatho-Pannonian Region PEEL ION Toth cetcisethysae vag Me eta dix se oe... oh tee seareae 203 The Banska Stiavnica Ore District: Relationship between Metallogenetic Processes...an eae eer 213 Mineralizations at the Rozalia Mine, HodruSa WU cia ORK oderay UPrcicn oa Saly, and...lowsulfidation deposits of the Banska Stiavnica mining district. A high-sulfidation epithermal deposit will be...Stiavnica stratovolcano central zone and Rozalia Mine 18.30-19.30 Dinner 19.30-22.00 Optional visit to |  | | 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 |  | | Journal (article/letter/editorial) | | alteration of Miocene volcanic units in the Gedikler region and the area surrounding the Kışladağ gold deposit...Miocene volcanic rocks in the Eşme (Uşak Province) region. The alteration developed in rhyolitic to andesitic...sericitization and silicification increase from the Gedikler region towards the Kışladağ porphyry gold deposit. SEM...from the Gedikler kaolin occurrences in the Uşak region represents an economic porphyry Au deposit with...hydrologic exploration of thermal waters in the Uşak region, and the genesis of water using oxygen and hydrogen |  | Inoue, Atsuyuki, Lanson, Bruno, Marques-Fernandes, Maria, Sakharov, Boris A., Murakami, Takashi, Meunier, Alain, Beaufort, Daniel (2005) Illite-smectite mixed-layer minerals in the hydrothermal alteration of volcanic rocks: I. One-dimensional XRD structure analysis and characterization of component layers. clays and clay minerals, 53 (5) 423-439 doi:10.1346/ccmn.2005.0530501 | Journal (article/letter/editorial) | | the sampie used in the present XRD study are cristobalite and quartz. Calculating the occurrence probabilities...describe the mode of layer stacking, we introduce a new symbol M, which is different from the Reichweite...crystallites is consistently interpreted by introducing a new model in which the I-S crystallites consist of component...formed from Miocene volcanic glass in Waga-Omono district. Clay Science, 5, 123-136. Inoue, A., Kohyama...of volcanic rocks: I. The Golden Cross epithermal ore deposit, New Zealand. Clays and Clay Minerals, |  | Zamanian, Hassan, Dolatshahi, Somayeh, Yang, Xiaoyong, Karimzadeh Somarin, Alireza, Meshkani, Seyed Ahmad (2021) Geochemical, fluid inclusion and O–H–S isotope constraints on the origin of the Rangraz copper deposit, Central Iran. Ore Geology Reviews, 128. 103877pp. doi:10.1016/j.oregeorev.2020.103877 | Journal (article/letter/editorial) | | researchers have suggested that the Cu deposits in this district are of intermediate to high sulfidation vein style...began in ancient times and substantial historic mine workings exist at several locations. Modern exploration...targeting similar epithermal ores in this promising region. Aghachi, Gharaghid, and Jaafar Abad faults (Fig...Cenozoic and older lithounits do not crop out in the region (Ghalamghash, 1998). Paleocene-Eocene sedimentary...geology map of Rangraz deposit with geological cross-section for A1 copper mineralization zone (modified |  | | Journal (volume) | | A. Logan, District Mining Engineer C. Jenkins, Chief Geologist McK. Laizure, District W. Burling...Engineer District Sampson, Assistant Mining Engineer District Engineer Chas. V. Averill, District Mining...OF CONTENTS Page DISTRICT REPORTS OF MINING ENGINEERS—— 7 Redding Field District 7 Sacramento Field...Field District 7 San Francisco Field District 7 Los Angeles Field District i) Current Mining Activity...now available is appended hereto, and the names of new bulletins will be added in the future as they are |  | | Book | | good ilmenite crystals exist in the region (Brunet, I 977b ). NEW YORK Amity, Orange County. At many...Mount Malosa, Chilwa alkaline province, Zomba district. "Illite" is the name of a series of incompletely...Springfield show ( 1995: 582). Madawaska [Faraday] mine near Bow Lake, Hastings County. Some of the world's...property of, the old Madawaska uranium mine (called the Faraday mine before 1964). The mineral assemblage...Cowgill, 1977). LATINAMERICA BRAZIL Jacupiranga mine, Sao Paulo. Among the crystallized minerals in the |  | | Book | | of Canada: A Synthesis of Major Deposit-types, District Metallogeny, the Evolution of Geological Provinces...advertising or promotional pw·poses, for creating new collective works, or for resale. For such copying...avec l'editeur. Gold-rich specimen fro1n the Don,e Mine, Tim1nins, Ontario that was presented to GSC in...sub-angular altered and non-altered clasts and folded cross-cutting veins of coarse pyrite, ankerite and minor...of Canada A Synthesis of Major Deposit-Types, .District Metallogeny, the Evolution of Geological Provinces |  | | Book | | (4th from left; grey jacket) to the Ergani Copper Mine (Elazığ-Türkiye) in 1937. In the early years of...Aslihan Yener and the support from MTA, an ancient tin mine was located at Kestel near Çamardı, Niğde, along...Kültepe mentioning tin imports, set the stage for new ideas regarding the supply of tin metal in the Bronze...were exploited in antiquity, such as the copper mine at Ergani being. The geology of Turkey is complex...finds from Çatalhöyük: a review and preliminary New Work. In: Hodder I (ed) Substantive technologies |  | | Book | | G. THENG Landcare Research Palmerston North New Zealand GERHARD LAGALY Institute für Anorganische Chemie...Germany Amsterdam Boston Heidelberg London New York Oxford Paris San Diego San Francisco ...Kazue Tazaki THE NETHERLANDS Radko A. Kühnel NEW ZEALAND Colin C. Harvey, Benny K.G. Theng, Guodong Yuan...d’Orléans). He is grateful to Landcare Research New Zealand for providing office space and associated facilities...financial assistance, and to the Royal Society of New Zealand for their support under the ISAT Linkages Fund |  | | Book | | champs de stabilité. Ainsi, la tridymite et la cristobalite apparaissent être des produits habituels de...solution sursaturée à basse température : opale–cristobalite–tridymite–quartz. Pour les minéraux de cette...d'énergie libre est minimale pour la paire opale–cristobalite et maximale pour la paire opale–quartz. L’enchaînement...reconstitution au moment de la formation) ; c – district aurifère d'Angrensk, gisements de Kotchboulak...s dans l’auréole des roches métasomatiques du district métallifère de KotchboulakLachkerek. Les gisements |
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