 | | Journal (article/letter/editorial) | | GEOLOGISTS 1987 NO. 5 The RotokawaGeothermalSystem,New Zealand:An Active Epithermal Gold-DepositingEnvironment...Scientificand Industrial Research,PrivateBag,Petone,New Zealand Abstract The Rotokawageothermalsystemis lessthan...underlyingMesoziocgraywackebasementin the Taupo volcaniczone, a region dominatedby extensionaltectonics.At...060 yrs ago and is presently occupiedby an acid lake (LakeRotokawa)with a pH • 2. Significantbeddedsulfurdeposits...Significantbeddedsulfurdeposits which formed in an earlier crater lake existbeneaththe presentlake. The deep fluidsare |  | | Journal (article/letter/editorial) | | Tectonic Controls on Hydrothermal Flow, Taupo Volcanic Zone, New Zealand: Implications for the Formation of...Auckland, New Zealand 2 Hot Solutions Ltd, PO Box 32-125, Devonport, Auckland, New Zealand Abstract...scales for geothermal systems of the Taupo Volcanic Zone, New Zealand. Most geothermal systems occur within...(Ohakuri) and six active (Broadlands-Ohaaki, Waiotapu, Rotokawa, Waimangu, Te Kopia, and Orakeikorako) geothermal...shearing, caused by low differential stresses. The Taupo Volcanic Zone is highly prospective for epithermal-style |  | | Journal (article/letter/editorial) | | 95-108 Gold-SilverOre-GradePrecipitates from New Zealand Thermal Waters B. G. WEISSBERG Abstract Gold-silverore...areas along the easternmargin of the Taupo Volcanic Zone, New Zealand. They occur as red-orange amorphoussulfideswith...106 kg/hr, Wairakei system,1951) combinedwith long lifetimes (e.g., 5 X .105yr, Wairakei) are adequateto...hydrothermalalterationprod- and Whakarewarewa,New Zealand (2 ppm Au and uctsfoundin manyepithermal ore...area is exceptionalin and the Hauraki Peninsula,New Zealand) are similar havingas muchas 6% Ag in the scaleoccurringas |  | | 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) | | and deposition of metals in the Rotokawa geothermal system, New Zealand R. E. Krupp 1 and T. M. Seward...Research, Chemistry Division, Private Bag, Petone, New Zealand Abstract. Mass balance calculations based on...deposits yield minimum metal concentrations for the Rotokawa deep geothermal fluid which are compared with...taking place during the ascent of the fluid. The Rotokawa geothermal system, which has been shown earlier...purpose. The Rotokawa field is situated in the Taupo volcanic zone on the North Island of New Zealand. Hydrothe |  | | Journal (article/letter/editorial) | | particularly IS epithermal orebodies in any particular district, irrespective of whether or not paleosurface features...neutral-pH, alkali chloride waters along streams and on lake margins and bottoms, although shallow boiling also...level of Frying Pan Lake (6-m deep, pH 3.5, 55 °C), Waimangu geothermal system, Taupo Volcanic Zone, North...North Island, New Zealand (see Simmons et al. 1993) The reactive H2S-bearing steam condensate formed in...lessacidic conditions (Fig. 3). Minor disseminated pyrite can occur in the proximal portions of steam-heated |  | | Journal (article/letter/editorial) | | Division, D.S.I.R., Private Bag Petone, Lower Hutt, New Zealand and H. STAERK Institut fuer Radiochemie, Technische...pools of the geothermal areas at Rotokawa and Waimangu, New Zealand, was separated into a solvent-extractable...within the Rotokawa and Waimangu geothermal areas, New Zealand. Biological activity in New Zealand thermal...distribution of algal species near hot springs in New Zealand is strongly dependent on the concentration of...Sampling areas Rotokawa. The Rotokawa geothermal area is situated - 2 0 km northeast of Taupo. Accounts of |  | Djokic, Tara, Van Kranendonk, Martin J., Campbell, Kathleen A., Havig, Jeff R., Walter, Malcolm R., Guido, Diego M. (2021) A Reconstructed Subaerial Hot Spring Field in the ∼3.5 Billion-Year-Old Dresser Formation, North Pole Dome, Pilbara Craton, Western Australia. Astrobiology, 21 (1) 1-38 doi:10.1089/ast.2019.2072 | Journal (article/letter/editorial) | | overlies a hydrothermally influenced volcanic caldera lake facies, with shoreline stromatolites. Hot spring...facies that are characteristic of those from New Zealand, Yellowstone National Park, USA, and Argentina...Environmental Sciences, University of New South Wales, Kensington, New South Wales, Australia. 2 Australian...Questions Institute, University of New South Wales Australia, Kensington, New South Wales, Australia. 4 Pheasant...Ao Marama, University of Auckland, Auckland, New Zealand. 6 Department of Earth Sciences, University of |  | | Journal (article/letter/editorial) | | and Industrial Research, Private Bag, Petone, New Zealand (Received June 9, 1988; accepted in revised...of Au(III) and Au(I) by pyrite, pyrrhotite, sphalerite, galena. In New Zealand a number of active geothermal...than 0.1 ttg k8 -t, WEISSaERG (1969). The active Rotokawa geothermal system has deposited approximately...formation of geochemical anomalies in stream and lake sediments and soils (JENNY, 1968; HEM, 1976; HOHL...o u n d / h a t Au(CN)[ w a s n o t adsorbed by pyrite, pyrrhotite, sphalerite, galena or chalcopyrite |  | | Journal (article/letter/editorial) | | member Sugar White’s also traditional talk, What’s New in Minerals, to round off the evening. On Saturday...the specimens. It’s a concept that could bring a new approach and emphasis to the collecting aspect of...Finds in Utah and Nevada. Joe, who lives in Salt Lake City, has gone over that area minutely and had both...reports, the trip was successful, so we can expect a new supply of Blue Bell material on the trading circuit...Thornton, from New Zealand, mounted the platform to speak on Current Collecting Sites in New Zealand. Jocelyn |  | | Book | | Originally published by Springer-Verlag Berlin Heidelberg New York in 1990. The use of registered names, trademarks...which speculation is idle, but within which useful new insights regarding the relationship of certain ores...application of plate tectonic concepts can pinpoint new metal deposits. The main tool available to the exploration...more limited utility in terms of the search for new mineral districts. The problem of the geographic...Panguna Porphyry Copper Deposit, Bougainville, Papua New Guinea ......... . Genetic Models for Porphyry Copper |  | | Book (edition) | | have incorporated into Chapter 1. Apart from the new material discussed above I have included a description...and epithermal gold mineralization and introduced new material into most chapters of this book. This work...places as far apart as France, California, Japan, New Zealand and Spain and the offers to translate it into...Some chapters have been considerably expanded and new sections added; in particular on disseminated gold...perennial complaint of industrial employers, that the new graduate has little or no commercial awareness, such |
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