 | 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) | | Zone, New Zealand ANTHONY B. CHRISTIE,†GNS Science, P.O. Box 30-368, Lower Hutt 5040, New Zealand MARK...1142, New Zealand ROBERT L. BRATHWAITE, GNS Science, P.O. Box 30-368, Lower Hutt, New Zealand JEFFREY...92019, Auckland Mail Centre, Auckland 1142, New Zealand Abstract Epithermal Au-Ag vein deposits of the...Hauraki goldfield in the Coromandel volcanic zone, New Zealand, produced 320,000 kg Au and 1.5 million kg Ag...sphalerite, galena, chalcopyrite, sulfosalt minerals, and Te- and Se-bearing minerals are present in some deposits |  | | 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 |  | | Report (chapter) | | type, areassociated with either propylitic (+ adularia) or advanced argillic alteration, and cut mid-...the western U.S.A., Japan, the North Island of New Zealand, the Philippines, Fiji and Spain are described...vein deposit of epithermal type, about which much new information has recently become available. The term...sericitization and silicification, commonly with adularia, bounding the veins. Propylitization is, however...quantities of pyrite, calcite, dolomite, barite, adularia, rhodochrosite, rhodonite and fluorite. production |  | | Book | | UC-NRLF NEW ZEALAND of department Geological Survey Branch (P. G. Morgan, Director). LIST...LIST OF THE MINERALS OF NEW ZEALAND, BY P. O. Issued MORGAN AND under the authority of the Hou, J...Z. JOHN MACKAY, GOVERNMENT PRINTER 1913. NEW ZEALAND-!, n Department jfe 5j Geological Survey...Morgan, Director). LIST OF THE MINERALS OF NEW ZEALAND, P. Issued O. MORGAN AND under the authority...Minerals . . ... LIST OF THE MINERALS OF NEW ZEALAND INTKODUCTION. FOR many years there has been |  | | 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...radiometric, and surface gravity data from the adularia-sericite epithermal province of the Hauraki goldfield have...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 unit |  | | Journal (article/letter/editorial) | | BRIAN W. ROBINSON 3 1New Zealand Geological Survey, DSIR, Lower Hutt (New Zealand) 2Chemistry Division,...DSIR, Petone (New Zealand) 3Institute of Nuclear Science, DSIR, Lower Hutt (New Zealand) (Received June...from epithermal veins in the Hauraki Goldfield, New Zealand, and 1 calcite drill-cuttingsample from the Ngawha...from epithermal veins of the Hauraki Goldfield, New Zealand, an at- © 1989 Elsevier Science Publishers B...KARANGAHAKE~ \Waitekauri TE AROHA=XToi ~ ' ~ Waiorongomai 0 , , ,, 25krn ~A~ , TAUR~A X • TE PUKE Fig. 1. Location |  | | Journal (article/letter/editorial) | | silver-bearingquartz and calcitewith minor amountsof adularia, sericite,andsulfides.Quartzandcalciteare dominantthroughoutthe...quartzandcalcite calcite with minor amountsof adularia, sericite, and fromgold-andsilver-bearing hydrothermalveinsin...northwestof the Kushikino chemicalparametersof fluid. mine (Izawa et al., 1981). The vein systemsformedin closeconnectionwith...Yoshikawa(1958), Mukaiyama and al., 1973). An adularia samplefrom the Kushikino Izawa (1964), Urashimaet...andesitichost rocks near the Kushikinovein of adularia (Izawa et al., 1981; Motomura et al., systems(modifiedafter |  | | Journal (article/letter/editorial) | | re- gardlessof ultimateorigin; and (6) juvenile--"new" water that is in or is derived from the mantle and...hydrosphere. Each of thesetypesof water may migrateinto new chemicaland physicalenvironments, evolvingchemically...metamorphic componentincreases. In places in the region north and west of Sulphur Bank, the meta.morphicfluid... This figurealsoshowsthe isotopiccomposition of mine-drainagewater (averageof 4 analyses) from the Abbott...Figure 2. The thermal waters show an average New Zealand "8•80-shift"of about2.5 per mil. Their isotopiccomThe |  | | 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...(up to 575 m) of economic Au-Ag ore. A pervasive adularia-quartz-illite-chlorite-pyrite alteration zone...calcite + pyrite ± adularia ± illite. This zone is enveloped by an illite-quartz-adularia-chlorite-calcite-pyrite...least altered andesites. The formation of the adularia, quartz, chlorite, calcite, pyrite, and some illite |  | | 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...Alterationmineralsare dominatedby clay,quartz,adularia,calcite,and pyrite. Hydrothermalclaysshowa distinctzonationwith...previouslybeendescribedfromepithermal depositsin New Zealandandpossiblycontainorganicliquid(s). Oxygenisotopesof |  | | Report (issue) | | ____________________________ 2. Generalized geologic map of the region near Steamboat Springs, Nevada __________ _____...ages for volcanic rocks from the Steamboat Springs region 2. Timespans of geothermal and ore-forming epithermal...hot-spring system. Steamboat Springs and the surrounding region have been thoroughly studied by geologic, geochemical...Nevada. Geology modified from Bonham (1969). In the region surrounding Steamboat Springs (fig. 2), pre-Tertiary...others, 1964). Ages of the volcanic rocks in the region are based on potassiumargon dates, largely summarized |  | | Journal (article/letter/editorial) | | Epithermal Province: The Hauraki Goldfield, New Zealand* JEFFREY L. MAUK,1,†CHRIS M. HALL,2 JOHN T....92019, Auckland Mail Centre, Auckland 1142, New Zealand 2 Department of Geological Sciences, University...Coromandel volcanic zone contains approximately 50 adularia-sericite epithermal Au-Ag deposits in a 200-km-long...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 |  | 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) | | Epithermal Au-Ag Deposit, Hauraki Goldfield, New Zealand Mark P. Simpson,1,†Michael F. Gazley,2,* Alistair...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...producer in the Hauraki goldfield, Coromandel, New Zealand. Production was mainly from the Maria and Welcome/Crown |  | | Journal (article/letter/editorial) | | steepdips (usuallymore than 80ø). In the Emperor mine area, the majority of the steeplodesare associated...1967a andb). Many of them lie The host rocksin the mine area are mainly nearwithin a narroweast-westzone...The fresholivinebasaltis greenishgray, massive, Mine Geology andmarkedlyporphyritic,with phenocrysts...plagioclase, andolivineup to 5 mmin diameter.The mine (Figs.3 and4) havebeendescribedin detailby groundmass... Three major fracturezoneshavebeen mappedin the mine workings,namely,the Shattershearzone, the HangingWall |  | | Journal (article/letter/editorial) | | arsenopyrite and pyrite - accompanied by quartz, adularia, sericite, + (tourmaline, chlorite, carbonates...research which ENADIMSA is carrying out in the region, and which aims to define a basic frame of reference...NNE-SSW trending edge of the allochtonous Malpica-Tui Unit, MTU (IGME 1984), forms part of a regional gold-bearing... EXPLAN A~-O-N. . . . . ~ . Goldprospeet ~r old mine - - - vein Typelolluvtal ~ Idetollotect I PRE~RIAN...rocks (indif. PREC.TO EARLY ~ IPALAEOZOIC Molpico--Tui Unit I Fault / formed, of the M T U or of the |  | | 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...million oz (Moz) Ag), in the Hauraki goldfield of New Zealand. The concealed Favona vein is hosted in late...Hydrothermal quartz and pyrite are ubiquitous. Adularia is widespread and envelopes veins; it locally...albite adjacent to the Amaranth vein at depth. Both adularia and albite are variably replaced by illite, which |  | | Journal (article/letter/editorial) | | Environmentof Ore Depositionin the CreedeMining District, San Juan Mountains,Colorado'I. Geologic, Hydrologic...AND GORDON P. EATON Abstract The Creede mining district in the central San Juan Mountains of southwestern...suggestthat a local stock was emplacedbeneath the Creede district in earliest Miocene time, about 24.6 m.y. ago...studiesby Edwin Roedderandlight- TaE Creedemining district,in the central San Juan Mountains of southwesternColorado...detailedgeologyof the district was first dethe results of these and future district studies will be scribedby |  | | Report (issue) | | Fluid-inclusion and geochemical studies at the Emperor gold mine, Fiji; Unpub. Ph.D. dissertation, University of..., 72 p. Ashley, R. P., 1974, Goldfield mining district, jLn Guidebook to the geology of four Tertiary...metals in silicified rocks of the Goldfield mining district, Nevada: U.S. Geological Survey Professional Paper...Paul, 1945, Quicksilver deposits of the Knoxville district, Napa, Yolo, and Lake Counties, California: California...1979, Geochemistry of hydrothermal ore deposits: New York, John Wiley and Sons, Inc., 798 p. 2nd ed.; |  | | Report (volume) | | east-west, northwest, and northeast within the district. Hawkins (1982) postulated that the east-westÂ...scale east-west-trending faults in the Enfield Bell mine are are the Marlboro Canyon, Bell, and Ridge faults...upper- and lower-plate rocks in the Jerritt Canyon district is thought to be a high-angle fault. Exposure...cover in the district. REGIONAL STRATIGRAPHY Most of the rocks in the Jerritt Canyon district are Paleozoic...Kay, 1967) (Ordovician) Silicified rock GEORGIA TE H LIBRARY Thrust fault- sawteeth on upper plate |  | | Journal (article/letter/editorial) | | sulfideenvironment is typified with serieitie (___ adularia) and/or intermediate argilliealterby strata-bound... SCIENTIFIC COMMUNICATIONS Boliden Hokuroku district Recsk Bousquet Brewer, Slate Belt Viejo Bossa...islandof Wetar,Indonesia(Fig. 1), the Lerokisand Kali district,Leiteh(1981)recordsthe presence of a largezone...1989).Simiday alterationoccur in Sb,Co, W, Bi, Se,Te, andHg. Althougheovelliteis re- larly, minorkaoliniteand...massive be a highlyacidicandcorrosive sulfide district. leachingand the formationof advanced argilliealteration |  | | Book | | decade, however, the need has been growing for a new, comprehensive index. Because the 14-year index suffered... Consequently, it was our decision to prepare a new index which is cumulative back to volume 1, fully...the 14-year index, and which is organized on a new plan. Nevertheless, all readers and users of the...the last ten years, and which has inspired this new effort. The current 25-year index is divided into...appears n Brief descriptive note, as in "What's New in Minerals?" p Photograph or other illustration |  | | Report (chapter) | | (Ag-Au), Pachuca, Mexico (Ag-Au), San Juan Mountains District, Colorado ( A g - A u - P b - Z n ) ; sea w a...processes are probably fundamental in the sub-critical region of Fig. 1 - the volcanic and sub-volcanic environment...ratios from both the Cornubian batholith and Tolfa district of the Tuscan province have 'normal' values.)...of Laramide porphyry copper deposits in Arizona, New Mexico and Sonora, Mexico. Sheppard and co-workers..../ ' / . / // i /" /./ ./ /~.......~'" :" I .But te. . .i/" I ! Butte ./" . .~'~.--~Atteration Main Stage |  | | Book (edition) | | Agate (Clent Hills). Topaz (Pegasus Bay). NEW ZEALAND MINERALS and GEMS by W. M. CAMPBELL, M.A.,...upon these sculptured features of a planet's face ? New Zealand's grainfields, whence come our daily bread...amethyst, opal, carnelian and cinnabar are but a few of New Zealand’s precious pebbles. If of an even content...Upheaved above wide ocean from deep undercrust. New Zealand is a contorted, broken land of varied mineral...titanium, “the metal of the future” with which New Zealand could supply all Europe— why, if this land ever |  | | Book | | Shikazono 2003 Elsevier Amsterdam - Boston - London - New York - Oxford - Paris San Diego - San Francisco -...R. (1919) On the origin of Kuroko of the Kosaka mine. J. Geol. Soc. Japan, 26, 107-132 (in Japanese)...alteration: a case study on the Seigoshi-Ugusu district. central Japan ....................... 1.4.2.6.................................... 1.4.4. Se- and Te-type Au-Ag deposits ...............................interaction with carbonaceous matter. In the Kitakami district (North Honshu) gold vein-type (mesothermal-type) |  | | Report (issue) | | 1986, Geology and development of the Hishikari mine: Mining Geology, v. 36 (2), no. 196, p. 117. Adams...Fluid-inclusion and geochemical studies at the Emperor gold mine, Fiji: Unpub. Ph.D. dissertation, University of...p. 9-24. Ashley, R. P., 1974, Goldfield mining district, in Guidebook to the geology of four Tertiary...metals in silicified rocks of the Goldfield mining district, Nevada: U.S. Geological Survey Professional Paper...Paul, 1945, Quicksilver deposits of the Knoxville district, Napa, Yolo, and Lake Counties, California: California |
|
