 | 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) | | 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) | | 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 |  | | 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) | | 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 |  | Vidal, Conrado Permuy, Guido, Diego M., Jovic, Sebastián 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 Au–Ag 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 Au–Ag 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 Au–Ag 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 Au–Ag metallogenic province. Since ∼2000, the region has produced 4.9 Moz |  | Zhai, Wei, Sun, Xiaoming, Sun, Weidong, Su, Liwei, He, Xiaoping, Wu, Youliang (2009) Geology, geochemistry, and genesis of Axi: A Paleozoic low-sulfidation type epithermal gold deposit in Xinjiang, China. Ore Geology Reviews, 36 (4) 265-281 doi:10.1016/j.oregeorev.2009.04.003 | Journal (article/letter/editorial) | | Technology of China, Heifei, 230026, PR China e Axi Gold Mine, Yining, Xinjiang, 835000, PR China b c a r t i...are native gold, electrum, pyrite, marcasite, arsenopyrite, hematite, limonite, and trace amounts of pyrargyrite...Kelian in Indonesia, Golden Cross in New Zealand, Ladolam and Porgera in Papua New Guinea, Chinkuashih...western Tianshan orogenic belt in Xinjiang Autonomous Region, China. The wall rocks of the deposit are subaerial...and identifying guidelines for exploration in the region. 2. Geological setting The Axi gold deposit is |  | | Report (issue) | | States • • • ••• Australia • • • ••• • •• •• • New Zealand ••• ••• 0 • . •• • •• • .... • •• ••• ••...California, and the west coast of the South Island of New Ze.a land. 1 ' r 7 • • The auriferous conglomerates...Hanson, Eng. Min. Journ., New Ybrk, 1920, 109, 194. The Mineral Industry, New York, 1919, 28, 295- 309...309, and 747- 794. Chem. and Met. Eng., New York, 1920, 22, 3-4. :it • 9 • remark, however, considerable...practically determined by the dollar excha.n ge rate in New York, • * Refining Gold Bullion with Chlorine Gas |  | | Journal (article/letter/editorial) | | Permo-Carboniferous granitoid intrusions of the New England Orogen. Mineralisation occurred at a range...veins, and these were followed by auriferous arsenopyrite–pyrite–quartz–carbonate veins with minor base...veins with electrum, gold, aurostibite, and arsenopyrite form a prominent and economically important...White P. M. Ashley (&) Earth Sciences, University of New England, 2351 Armidale, NSW, Australia E-mail: pashley@metz...Department, University of Otago, PO Box 56, Dunedin, New Zealand structural levels in the one deposit, formed |  | | Report (issue) | | supplies of minerals, especially within the Empire, new methods of usage and other commercial developments...1 N. America : Canada . . . . . 2 3 Australasia: New South Wales ; Queensland ; South Australia ; Tasmania...; Vi c t o r i a ; W e s t e r n Australia ; New Zealand . . . . 52 • • CHAPTER I I I SOURCES OF SUPPLY...ValuSterling. ANNUAL VARIATIONS IN VALUE OF SILVER In New York, quotations for silver are given i n cents per...both gold and silver. T h u s , in the Kongsberg district the proportion of silver to gold is given a s |  | 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...types contain abundant pyrite and/or marcasite ± arsenopyrite. Field relations indicate that silica-adularia...disseminated and vesicle-filling pyrite, marcasite, and arsenopyrite in argillically altered or weakly silicified...silicified rocks. Ore minerals consist of Au-bearing arsenopyrite and arsenian pyrite overgrowths on earlier-formed |  | Davies, A. G. S., Cooke, D. R., Gemmell, J. B., van Leeuwen, T., Cesare, P., Hartshorn, G. (2008) Hydrothermal Breccias and Veins at the Kelian Gold Mine, Kalimantan, Indonesia: Genesis of a Large Epithermal Gold Deposit. Economic Geology, 103 (4) 717-757 doi:10.2113/gsecongeo.103.4.717 | Journal (article/letter/editorial) | | Hydrothermal Breccias and Veins at the Kelian Gold Mine, Kalimantan, Indonesia: Genesis of a Large Epithermal...as inclusions in pyrite, sphalerite, galena, arsenopyrite, quartz, bladed carbonate, and sulfosalts. Hydrothermal...formed over a large vertical interval (>600 m). New sulfur isotope and fluid inclusion data are provided...outside of the immediate vicinity of the Kelian mine area. Their minimum thickness is 650 m. The base...(Ferguson, 1986; van Leeuwen et al., 1990; local mine terminology) would be better described as plagioclase-hornblende |  | Zamanian, Hassan, TaleFazel, Ebrahim, Hayatalgheybi, Masome, Samani, Bahram Agha Ebrahimi, Harris, Chris (2020) Geochemical, fluid inclusion and O–H–S isotope studies of the Milajerd Au-polymetallic prospect, Central Iran: Implications for ore genesis. Ore Geology Reviews, 120. 103444 doi:10.1016/j.oregeorev.2020.103444 | Journal (article/letter/editorial) | | deposit includes sphalerite, galena, pyrite, arsenopyrite, and marcasite. The principal gangue minerals...poorly-known metallogenic belt. This study presents new geological, geochemical, fluid inclusions and H–O–S...fracture-filling massive galena, pyrite, sphalerite, and arsenopyrite. Distribution of gold-bearing quartz veins in...Milajerd prospect are exposed extensively through the district and consist of andesite, basalt, dacite, trachyandesite...field (Fig. 7d). Volcanic rocks from the Milajerd district define a typical calc-alkaline trend on an AFM |  | | Conference Proceedings (Volume) | | Cover photograph: View of the Aitik open pit copper mine in the very north of Sweden. Mining operations started...regional scale 3D-model of the Skellefte mining district, northern Sweden ..............................VHMS-type deposits, Kristineberg area, Skellefte District, Sweden . . ....................................epithermal Au-Ag mineralisation at Golden Cross, Hauraki Goldfield, New Zealand ................ 70 A.B.... Christie & R. Carver A new storage approach for 3D Modeling ..................................... |  | | Book | | proportion of the accumulating information. This new book represents an attempt to address this major...of gold mineralization. For access to a wealth of new information the reader is encouraged to tum to the...demand for gold in the 1980s has opened up exciting new avenues of research and generated a wealth of hard...James Crocket is a graduate of the University of New Brunswick, Oxford University, and the Massachusetts...Manchester in 1973 (Ph.D.) and was then employed as a mine and exploration geologist by Falcon Mines Ltd in |  | 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) | | 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...springs in the Rehai geothermal region 87 The Rehai geothermal region, located ~11 km southwest of Tengchong |  | | 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 Garzê-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 Ecuador—M. Potter and M.T. Styles 0361-0128/98/000/000-00 |  | 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...the vein. Such an alteration signature may be district wide (Hedenquist et al., 2000). The argillic zone...70 80 90 100 SiO2(%) Silica cap from Wirallie mine, Drumm Hostrock of the Francis Creek area Fig....base metal sulfide minerals such as pyrite, arsenopyrite, chalcopyrite, galena and tetrahedrite. Gangue |  | | 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) | | quartz-albite-sulfide-native gold (stage I), arsenopyrite-calcite-native gold (II), and pyrite-calcite...I. The decrease of H2S activity triggered by arsenopyrite crystallization caused native gold deposition...deposition at stage II. Key words: Gold deposit; Arsenopyrite; Fluid inclusions; Phase analysis; West Junggar...2012; Agangi et al., 2013; King et al., 2014). Arsenopyrite is another important gold-bearing mineral in...hydrothermal gold deposits. The abundance of arsenopyrite is much higher than pyrite in some hydrothermal |  | | 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) | | massive sulphide deposit, Australia Vladimir David Golden Cross Resources Ltd., 22 Edgeworth David Avenue, Hornsby...the Cobar Basin, the richest polymetallic mining district of the Palaeozoic age in Australia. It is mined...mined by an underground operation (Endeavour Mine) exploiting Zn-, Pb- and Ag-bearing massive sulphide ore...interpretation of deposit genesis. This paper provides a new genetic model in the light of the Cobar Basin evolution...in the sense of basin evolution framework using new drilling information. As a result of the systematic |  | | Journal (article/letter/editorial) | | Triassic opening of the Fig. 2. Geologic map and cross section of ore the body and the alteration zones...polars); D. Sulfide-bearing gray quartz (Qz) vein cross-cutting the mylonitic foliation (crossed polars)...mesoscopic-microscopic scales that are both parallel to and cross-cut mylonitic fabric. During D3 deformation quartz...The ore minerals include pyrite, chalcopyrite, arsenopyrite, pyrrhotite, magnetite and sphalerite. Ore textures...Middle-stage, faultcontrolled sulfides, mainly arsenopyrite, pyrrhotite, chalcopyrite, pyrite and native |  | | Journal (article/letter/editorial) | | at: No. 19, Beitucheng Western Road, Chaoyang District, 100029 Beijing, P.R. China. E-mail address:...Mexico, the United States, Canada, Chile, Peru, Papua New Guinea, and Japan. Lindgren (1922, 1933) first defined...“carbonate-base metal Au deposits” in the circum-Pacific region (e.g., Leach and Corbett, 1994; Corbett and Leach...content (typically <2 vol %), minor pyrite –arsenopyrite ± pyrrhotite ± sphalerite ± galena ± chalcopyrite...al., 2002), Baguio district of the Philippines and Morobe goldfield of Papua New Guinea (Sillitoe, 1989) |  | Anikina, E. Yu., Bortnikov, N. S., Klubnikin, G. K., Gamyanin, G. N., Prokof’ev, V. Yu. (2016) The mangazeya Ag–Pb–Zn vein deposit hosted in sedimentary rocks, Sakha-Yakutia, Russia: Mineral assemblages, fluid inclusions, stable isotopes (C, O, S), and origin. Geology of Ore Deposits, 58 (3) 182-212 doi:10.1134/s1075701516030028 | Journal (article/letter/editorial) | | separated in space are distinguished: quartz–pyrite–arsenopyrite (I), quartz–carbonate–sulfide (II), and silver–basemetal...in ore veins. Ore minerals are represented by arsenopyrite, pyrite, sphalerite, galena, fahlore, and less...(~80 Ma) (Parfenov et al., 1995, 1999). The ore district is com posed of Carboniferous–Permian and, to...turbidites, and deepwater black shales. In general, the region is char acterized by longterm geodynamic evolution...thrustfault system along the boundary between the fold region and the Siberian Platform (Gosudarstvennaya …, |
|
Golden Cross Mine, Waitekauri, Hauraki District, Waikato Region, New Zealand