 | | Journal (article/letter/editorial) | | deposits: constraints from the Broken Hills deposit, Hauraki Goldfield, New Zealand Helen A. Cocker & Jeffrey...# Springer-Verlag 2012 Abstract The 7.1 Ma Broken Hills adularia-sericite Au–Ag deposit is currently...in the Hauraki Goldfield of New Zealand. The opaque minerals include pyrite, electrum, acanthite (Ag2S)...the Hauraki Goldfield and elsewhere worldwide. Broken Hills ores also contain the less common minerals aguilarite...petrovskaite occur with high-fineness electrum. Broken Hills is the only deposit in the Hauraki Goldfield |  | 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) | | Deposits of the Hauraki Goldfield, Coromandel Volcanic Zone, New Zealand ANTHONY B. CHRISTIE,† GNS Science...Science, P.O. Box 30-368, Lower Hutt 5040, New Zealand MARK P. SIMPSON, School of Geography, Geology and...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...the Hauraki goldfield in the Coromandel volcanic zone, New Zealand, produced 320,000 kg Au and 1.5 million |  | | 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 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...85721 Abstract The Hauraki goldfield in the Coromandel volcanic zone contains approximately 50 adularia-sericite...the likely age of mineralization in the nearby Thames epithermal deposits. In the eastern province, adularia...40Ar/39Ar age of 8.29 ± 0.25 Ma, adularia from the Broken Hills deposit gives a preferred 40Ar/39Ar age of 7 |  | | Journal (article/letter/editorial) | | Epithermal Orebody: The Martha Hill Deposit, Waihi, New Zealand K. BERNARD SPÖRLI1,† AND HUGH CARGILL2 1 Geology...92019, Auckland 1142, New Zealand 2 28 Norwich Avenue, New Plymouth 4310, New Zealand Abstract We describe...the world-class Martha Hill goldsilver deposit, Coromandel peninsula, which is hosted in late Miocene andesitic...with migration of a subduction zone past the Coromandel peninsula. This demonstrates that structural...The world-class Martha Hill mine in the Hauraki goldfield of New Zealand (Figs. 1, 2), with a total mined |  | Kullerud, Kåre, Kotková, Jana, Šrein, Vladimír, Drábek, Milan, Škoda, Radek (2018) Solid solutions in the system acanthite (Ag2S)–naumannite (Ag2Se) and the relationships between Ag-sulfoselenides and Se-bearing polybasite from the Kongsberg silver district, Norway, with implications for sulfur–selenium fractionation. Contributions to Mineralogy and Petrology, 173 (9) 71 doi:10.1007/s00410-018-1500-3 | Journal (article/letter/editorial) | | Sebearing polybasite from the Kongsberg silver district, Norway, with implications for sulfur–selenium...polybasite have been discovered at the Kongsberg silver district. The seleniumbearing minerals occur in two samples...samples from the northern part of the district, forming either single or polyphase inclusions together...sulfur and selenium. Keywords Kongsberg silver district · Selenides · Acanthite · Naumannite · Aguilarite...Ag2S0.5Se0.5, was described from the San Carlos Mine, Guanajuato, Mexico, considered as its type locality |  | | Journal (issue) | | ..... 337 by D. J. Mossman The Colorado Quartz mine, Mariposa County, California: a modem source of....................................... 322 What’s new in minerals? (by D. Leicht) .......................Show, and what better way to spend it than making new friends and playing tennis with your min eralogical...she and Brooks became part owners of the Old Yuma mine nearby. After a few years her strong love of minerals...ventures in Mex ico (particularly the San Francisco mine in Sonora). Many extraor dinary specimens passed |  | | 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.; |  | Hamilton, Ayrton, Campbell, Kathleen, Rowland, Julie, Browne, Patrick (2017) The Kohuamuri siliceous sinter as a vector for epithermal mineralisation, Coromandel Volcanic Zone, New Zealand. Mineralium Deposita, 52 (2) 181-196 doi:10.1007/s00126-016-0658-8 | Journal (article/letter/editorial) | | for epithermal mineralisation, Coromandel Volcanic Zone, New Zealand Ayrton Hamilton 1 & Kathleen Campbell...deposits formed 16.3–5.6 Ma within the Coromandel Volcanic Zone, New Zealand. The sinter is associated with rhyolite...Auckland, Private Bag 92019, Auckland 1142, New Zealand 2 Institute of Earth Sciences and Engineering...University of Auckland, Private Bag 92019, Auckland, New Zealand deposits contain the high-temperature (>75 °C)...Palaeoenvironmental reconstruction . Coromandel Volcanic Zone . New Zealand Introduction Siliceous sinters |  | | 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 |  | | 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 |  | | Journal (article/letter/editorial) | | carbonate veining and faults filled with clay and pyrite. Kencana (K1 vein) shows a complex, multiphase...lesser selenian galena, sphalerite, bornite, and pyrite. Accessory minerals include aguilarite and molybdenite...ore genesis model, which can be used to generate new targets in the Gosowong Goldfield and other low-sulfidation...model to assist the exploration team in generating new targets in the Gosowong Goldfield. There has been...significant Au occurrence known in the Halmahera region, the Kaputusan Cu-Au porphyry deposit on the island |  | | Report (issue) | | States • • • ••• Australia • • • ••• • •• •• • New Zealand ••• ••• 0 • . •• • •• • .... • •• ••• ••...carry35576 A 3 6 ing metallic sulphides, especially pyrite ; often, also, as an impregnation of the country...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 |  | | Journal (article/letter/editorial) | | Tourmaline and Wollastonite from famous Broken Hills, New South Wales. Next I discover exquisite clear...Boulder Opal from Queensland, and Molybdenite from New South Wales, etc. At the bottom of the wonder parcel...we visited some years ago) the parcels contain Pyrite cubes and calcite Xls and Niccolite from the Island...Sphalerite Xls, Agates, Hematite, Smithsonite, pyrite nodules found in huge Chalk Mines, amber, Galena...has added to our exchange. A small parcel from New Zealand, however, really caught my fancy. For it contained |  | | Report (issue) | | MINING DISTRICTS Shady Run (Fondaway Canyon) Broken Hills Chalk Mountain Westgate IXL (Cox Canyon) La...Mountain, Rawhide, Big Kasock, Slate Mountain, and Broken Hills 7-1/2' quadrangles. Marty is trying to establish...Sidder, and others will assist with the other data. New interpretations and reinterpretations of seismic...completed the Verdi quadrangle in the Peavine district. Hal is mapping the Vista quadrangle, and Trobe...Paradise-Denio Resource Areas of the Winnemucca BLM District, which covers the northwestern portion of the |  | Van Alstine, R. E., Worl, R.G., Heyl, A.V., Trace, R.D., Parker, R.L., Griffitts, W.R., Sainsbury, C.L., Cathcart, J.B. (1976) Geology and resources of fluorine in the United States. Professional Paper 933. US Geological Survey doi:10.3133/pp933 | Report (issue) | | 1. 2. 3. 4. 5. A sbestos ore Lead ore, Balmat mine, N . Y. Chromite-chromium ore, Washington Zinc ore...not yet discovered or not currently profitable to mine. The mining of mineral deposits, once they are discovered...depleted, new deposits are found, new extractive technology and uses are developed, and new geologic knowledge...knowledge and theories indicate new areas favorable for exploration. This Professional Paper discusses.............................................. Broken Hills............................................ |  | | Report (issue) | | ............................ Types of potential new deposits...........................................totals, as shown in Table 1. The Cornstock Lode district in Storey and Lyon Counties is by far the largest...Cu) and Yerington (Cu, Ag, Au) In Lyon County; Broken Hills (Ag, Pb, Cu, Au, Zn), Nevada Scheelite (W, Pb...completeness in describing known deposits of the region. The data in Table 1 are accurate inasmuch as most...production from the Broken Hills district are not currently available, though the district is identified as |  | | Report (issue) | | r Broken Hills D~striCt (3>. . . Hill~J Broken ·j. ·I I J/ . ·; ·!\ i ) . District __...__ -E~:~h~ "'B~k~~ ·PJ.lls district 'lies 'between the Fairview and Paradise l~nges.:• ~·:::~~~,·~~:_...production . ' . }: . _ u~ ::~~¥~~::4t-- J3,ro.ken Hills was first discovered in 1905 by .Jam.e~ M. ': Stratror...of the Silver Trailer mine near:cy- a ~:, ~: below the site of the Broken Hills mille. 1 i By tracing...· . . .-- =~ the Broken Hills mine, . and . he. named the place Broken Hills (fig. 48). !"t desert |  | | Report (issue) | | white areas). Sample is from the Buckskin National Mine, Humboldt County, Nevada. Photograph by Peter Vikre...............................................Q26 Mine Waste Characteristics.............................showing selenium concentrations in coal samples, by region of the United States.............................Abstract Selenium (Se) was discovered in 1817 in pyrite from copper mines in Sweden. It is a trace element...earth may lead to new (or unconventional) sources of selenium, the discovery of new methods of extraction |  | | Journal (article/letter/editorial) | | coexist stably are in contact and react to produce a new phase or an assemblage along their interface (Fisher...Nazareno, Pongkor (Greffie et al. 2002), and Broken Hills (Cocker et al. 2013), and, therefore, their...current. Pure metals (Au and Ag), Au-Ag alloys, and pyrite (FeS2) were used as the standards. Most analyses...Maikain ” ” 650–999 ” Nesterenko et al. (1984) Broken Hills ” ” 620–670 ” Cocker et al. (2013) Tambang Sawah...paper Rabenstein ” ” 360–610 ” Majzlan (2009) Broken Hills ” ” 560–670 ” Cocker et al. (2013) Dorozhnoe |  | | Journal (article/letter/editorial) | | particularly IS epithermal orebodies in any particular district, irrespective of whether or not paleosurface features...geothermal system, Taupo Volcanic Zone, North Island, New Zealand (see Simmons et al. 1993) The reactive H2S-bearing...lessacidic conditions (Fig. 3). Minor disseminated pyrite can occur in the proximal portions of steam-heated...the Ladolam LS gold deposit, Lihir Island, Papua New Guinea, are represented at surface by steaming ground...alteration peripheral to the La Coipa HS-IS gold-silver district, Chile. f Hydrothermal breccia, generated by shallow-seated |  | | Journal (article/letter/editorial) | | Tourmaline and Wollastonite from famous Broken Hills, New South Wales. Next I discover exquisite clear...Boulder Opal from Queensland, and Molybdenite from New South Wales, etc. At the bottom of the wonder parcel...we visited some years ago) the parcels contain Pyrite cubes and calcite Xls and Niccolite from the Island...Sphalerite Xls, Agates, Hematite, Smithsonite, pyrite nodules found in huge Chalk Mines, amber, Galena...has added to our exchange. A small parcel from New Zealand, however, really caught my fancy. For it contained |  | | Journal (article/letter/editorial) | | and prospect pits is great, with many minerals new to the state being identified every year. Nevada...photo. Churchill County Chalk Mountain District Chalk Mountain mine: calcite, cerussite, chlorargyrite,...scheelite, vanadinite, wulfenite Corral Canyon District Various mines and prospects: anatase, rutile,...(top). Clinotyrolite spray, 3.4 mm across, Lovelock mine, Churchill County. Figure 2 (bottom). Wulfenite... Hot Springs Iron meteorite Lake (Mopung Hills) District Various mines and prospects: mopungite,* romeite |  | | Report (issue) | | Olivenite, 1.6-cm cluster, Majuba Hill Mine, Antelope district, Pershing County. N. Prenn collection.... Davis The Goodsprings (Yellow Pine) Mining District, Clark County John C. Kepper 91 References ...COLOR PLATES (following page 242) Gold, Mexican Mine Gold, Majuba Placer Pyromorphite after Galena with...Round Mountain Mine Quartz, Lovelock area Acanthite Grossular, Nightingale district Quartz epimorph...after Calcite Agardite Grossular, Buena Vista district Quartz (amethyst) and Calcite Almandine-Spessartine |  | | Journal (article/letter/editorial) | | Volume 101, pages 2731–2737, 2016 Transformation of pyrite to pyrrhotite in the presence of Au-Ag alloys at... 0.35, 0.56 or of fineness 300, 500, 700‰) and pyrite was used to reveal the solubility of Au (Ag) in...increased fineness were established at the contacts of pyrite blocks with Au-Ag plates. The obtained results...Ag content in alloys influences the stability of pyrite and contributes to its transformation in pyrrhotite...annealing products of Au-Ag-pyrite-bearing ores. Keywords: Desulfidation, pyrite, pyrrhotite, visible and |
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