 | 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) | | 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...southern province, adularia from quartz veins at the Maratoto deposit provide a preferred 40Ar/39Ar age of 6...47 ± 0.06 Ma. The southernmost deposit in the Hauraki goldfield, Muirs Reef, has adularia in quartz veins |  | | 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) | | Barrier Island Silver-Gold Deposits, Hauraki Province, New Zealand W. R. H. RaMsaY Armidale, N. S. W.,... Australia H. W. KOB~ Auckland, N e w Zealand The Great Barrier Island subvolcanic silver-gold deposits...sulfides, selenides and native metals. Fineness of electrum derived from two electron microprobe analyses...along with other hydrothermal fissure deposits of Hauraki Province is considered to be of Pliocene-Pleistocene...northern extension of Hauraki Province, which constitutes N e w Zealand's major region of noble metal production |  | | Journal (article/letter/editorial) | | Gold-Silver Deposits in the Waihi-Waitekauri Region, New Zealand ANNE E. MORRELL,†,* CORINNE A. LOCKE, JOHN...92019, Auckland Mail Centre, Auckland 1142, New Zealand Abstract Aeromagnetic, airborne radiometric...the adularia-sericite epithermal province of the Hauraki goldfield have delineated distinct anomalies associated...enrichment in the Waitekauri-Maratoto area. Gravity data in the Waihi district define a unique, double-peaked...data provides an outstanding case study of the district- to regional-scale geophysical characteristics |  | | 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...et al., 2003; Comstock: Hudson, 2003; Favona, New Zealand: Simpson and Mauk, 2007). Many papers describe...Waitekauri area of the southern Hauraki goldfield, North Island, New Zealand (Figs. 1, 2). The area has been...deposits 945 946 SIMPSON AND MAUK 176°E 175°5´E Hauraki Goldfield Great Barrier Island Auckland 38°S |  | | 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...crosssectionthrough the Golden the important Hauraki epithermal district of New Crosshydrothermal system.Variationsin |  | | 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) | | 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...and Waitekauri deposits, southern Hauraki goldfield, New Zealand. Quartz veins contain colloform to...The Hauraki goldfield is located in the Coromandel Peninsula of the North Island of New Zealand (Fig...Research Centre, 114 Karetoto Road-RD4, Taupo 3377, New Zealand. † Corresponding author, e-mail: s.strmic-palinkas@auckland |  | | Journal (article/letter/editorial) | | Sulfide-Quartz Vein System, New Zealand: Temperature and Salinity Controls on Electrum and Sulfide Deposition...Nuclear Sciences, P.O. Box 31312, Lower Hutt, New Zealand Abstract The large, andesite-hosted quartz vein...sphalerite-galena-pyritechalcopyrite-acanthite-electrum assemblage at medium to shallow levels. Fluid...low CO2 contents (0.05–0.24 wt %). Quartz within electrum-poor Zn-Pb-Fe sulfide bands was deposited at higher...temperatures (295°–242°C) and salinities than quartz in electrum-bearing Zn-Pb-Fe-Cu-Ag sulfide bands (260°–190°C) |  | 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) | | 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...exploration of known epithermal deposits throughout the Hauraki goldfield for additional resources. Introduction...than 200 metric tons (t) of gold (e.g., Martha, New Zealand; Hishikari, Japan; Acupan, Philippines; Comstock |  | | Journal (article/letter/editorial) | | of the Silver Deposits in the GuanaiuatoMining District, Mexico* W. PETRUK AND D. Owens Abstract The...Guanajuato mining district in Mexico consistof disseminated silver sulfides,selenides,and electrum in quartz-calciteveins...Introduction Tt•. ores in the Guanajuatomining district, Guanajuato, Mexico, occur as mineralized quartz-calcite...samples from the Cebadamine are specimensof high-grade mine (two of type 2 and two of type 3 ore in the silver...vugs in ameSierra vein system), two from the Cebada mine thyst. The vugsare lined with concretionary quartz |  | | 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 |  | | Journal (article/letter/editorial) | | of the Golden Cross Epithermal Au-Ag Deposit, New Zealand MARK P. SIMPSON,† JEFFREY L. MAUK, Geology Department...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...deposit located within the Coromandel peninsula, New Zealand (Fig. 1). An earlier investigation by de Ronde...Coromandel peninsula within the North Island of New Zealand. alteration minerals to their distribution in |  | | 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.; |  | | Journal (article/letter/editorial) | | als thoughtto haveoccurredat the FrederickVII's mine in (Sehonwandt, 1983)andprobably theProvideneia...Sweden Kuusamo, Finland Undefined locality Blo•vout mine,¾Vyoming Kvacek(1973) Johanet al. (1982) Coleman...Barrier Island, New canbe achieved by eitherincreasing the totalconcentration Zealand(Ramsay andKobe,1974)...chemicalevolutionof hydrothermal AgSe) + namnannite (Ag.2Se) + electrum (Au,Ag) + klockfluids withtemperature. Temperature...ldockmannite must be below 15 mole thatdeposited electrum andnaulnannite werecalculated to atanytemperature |  | | Journal (article/letter/editorial) | | Orogenic Structures in the Ducatore district(Fig. 3): (1) thosein volcanic New metallogenie ideasconcerning...Localization is dis- about 250 km. The Ducat ore district is one of the ization in the center of the ore...ß ß . •Okm FIG. 2. Geologyof the Ducatore district. The Ducat gold-silverdepositis locatedin a ...ental typesof silverore fieldsin the Ducatore district. temperaturepropylitesand hydromicaquartzargil-...bodiesarelocatedbothin thehigh-angle Ag withup to 10%Au), electrum,andrarely,native 1802 KONSTANTINOV, ROSENBLUM |  | | 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 |  | | 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 |  | | Journal (article/letter/editorial) | | minerals, respectively, areformedinstead. The electrum-naumannite assemblage mayactasa sliding-scale...onthesereac- tarnishmethod. The composition of electrum(Au-Agsolid tionscanbe estimated usingequation...303RT ods the reaction between silver dissolved in electrum and = - AV/2.303RT, (16) naumannite canbeusedto...volumeforthesolids, is generally 4Ag + Sea/g)=2AgaSe . (17) electrum gas naumannite small.Therefore, the effectof pressure...byanalogy withBartonand atomicfractionof Ag in electrum,T is the temperature in riumwithnaumannite, graphically |  | | Book (volume) | | Strata-Bound Zinc-Lead Deposits of the Upper Silesian Region, Polanda Review of Some Recent .Research .. .....Madenkoy Massive-Sulfide Deposit, Eastern Black Sea Region, Turkey ............. ............. .. ..........Mineralization: an Example from the Iwami Mining District, Shimane, Japan ..... ............... ..........B., Epithern1al Au-Ag Mineralization, Maratoto Mine, New Zealand: Stable Isotopes and Fluid Inclusions...of the Sterling Hill Zinc Deposit, Sussex County, New Jersey .. ...... ..... . .. .. ..... ....... ... |  | | Report (issue) | | States • • • ••• Australia • • • ••• • •• •• • New Zealand ••• ••• 0 • . •• • •• • .... • •• ••• ••...while the natural gold-silver alloy know11 as '' electrum '' contains 20 pe.r cent. or more of the less...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 |  | | Book (edition) | | completely revised and updated with a wealth of new information and features. The second edition of the...alphabetical entries, 1000 of which are entirely new e 240 new color photographs, mostly of large specimens...specimens, as well as 104 black-and-white photographs 45 new crystal drawings of rare species the most complete...distinguished group of authors in the light of new research and important new technological developments. The second...Morocco; (center, left) wulfenite, San Francisco mine, Sonora, Mexico; (center) ameihyst, Veracruz, Mexico; | | | Book (edition) | | completely revised and updated with a wealth of new information and features. The second edition of the...alphabetical entries, 1000 of which are entirely new • 240 new color photographs, mostly of large specimens...as well as 104 black-and-white photographs • 45 new crystal drawings of rare species • the most complete...distinguished group of authors in the light of new research and important new technological developments. The second...Morocco; (center, left) wulfen ite San Francisco mine, Sonora, Mexico; (center) amethyst, Veracruz, Mexico; |
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