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  • South Comstock Mine - Western Mining History

    re-development of a mine to began in aug., 93; phase i at 2041 mt/d op mine, @ 40,000 oz au/yr heap leach. head grades of 2.4g/t au; 24g/t ag: cost us$2.5m, (rea gold corp.) phase 2: new 81,647 mt processing facility to handle 3.6mt/y at 1.7g/t. all ore from the lucerne pit of phase i. continue drilling down dip of lecerne pit.

  • Great Deposits – The Comstock Lode Geology for

    IntroductionGeologyLegacySources and Further ReadingFlying over Nevada on a clear day is one of the great joys of being an economic geologist. The Basin and Range country has abundant structural features, intrusions, deformed bedding and pits and plenty to keep one occupied. Every so often the occasional grid drilling pattern, hinting of what will or what just didn’t quite comes into view. The driver is of course gold, with Nevada dominating US gold production claimin在geologyforinvestors上查看更多信息
  • Silver -

    2020-6-2  The adjacent Prominent Hill-Ankata (Cu-Au-Ag) Mine has reserves of 7.5 Mt at 2% Cu, 0.4 g/t Au and 2.9 g/t Ag. In 2013 the mines produced 19,000 kg of silver in a mixed concentrate. The Carrapateena Prospect was discovered in June 2005, it contains silver as a co-product and subsequent feasibility studies have shown that the IOCG prospect has a ...

  • Newrange Gold Re-discovers Good Hope Mine at

    Twenty-seven detailed channel and panel samples were taken from the 5690 level of the Good Hope Mine and range in grade from 0.05 to 41.20 g/t Au and 6.00 to 244.67 g/t Ag. The sampling tested an undulatory, anastomosing set of highly mineralized structures that are a subset of a much larger, similar structural package that strikes dominantly E ...

  • Comstock Mine Group - Western Mining History

    Comstock Mine Group The Comstock Mine Group is a lead, copper, gold, and silver mine located in Pima county, Arizona at an elevation of 5,518 feet. Premium members have access to Google dynamic maps.


    2004-1-14  TYPICAL GRADE AND TONNAGE: The following data describe the median deposits based on worldwide mines and U.S.A. models: Au-Ag deposits (41 Comstock-type 'bonanza' deposits) - 0.77 Mt with 7.5 g/t Au, 110 g/t Ag and minor Cu, Zn and Pb.


    TORONTO, July 07, 2020 - Moneta Porcupine Mines Inc. (TSX:ME) (OTC:MPUCF) (XETRA:MOP) ("Moneta" or the "Company") is pleased to announce the results from three (3) additional dril

  • Hughes Property - Discovery Potential Summa Silver

    g/t Ag Eq Head Grade. Additional Km Exploration Potential on Property. Tonopah. ... 815M Oz Ag + 3.6M oz Au. San Dimas. 582M Oz Ag + 11M Oz Au. Pachuca. 1,500M Oz Ag + 6.2M Oz Au. Comstock. 200M Oz Ag + 8.3M Oz Au. Tonopah. ... Many of the previously mined veins in the Belmont and Mizpah Extension mines remain open. East of the mines ...

  • Comstock Wash, Kings Crown Peak area, Pioneer

    Comstock Wash, Kings Crown Peak area, Pioneer Mining District, Pinal Mountains, Pinal Co., Arizona, USA :

  • Annexe I Localisation et production des mines et des ...

    2007-3-2  1422,95 Kg Au 1952,08 Kg Ag Mine Géant Dormant ** 198 300 tm à 11,7 g/t Au 16,1 g/t Ag ** 99 000 tm à 11,0 g/t Au 16,1 g/t Ag 226 2 799 591 tm à 10,23 g/t Au 1987-1991 1992-20.. (17) Chaste / 32 F/04 / 10 / Val-d’Or 12 Casa Berardi Mines Aurizon ltée Veines de quartz-carbonates-pyrite- arsénopyrite dans des zones de cisaillements ou des ...

  • Mineral Commodity Report 13 - Silver

    2017-2-9  silver), Ag 3 AsS 3 5.64 to subtranslucent or uneven Pyrargyrite (ruby deep red to 2–3 5.7–5.9 metallic to hexagonal translucent to conchoidal silver), Ag 3 SbS 4 black adamantine opaque Silver (native) silver–white 2.5–3 10.1– metallic cubic opaque hackly Ag 11.1 Stephanite black 2–2.5 6.26 orthorhombic opaque uneven, brittle Ag 5 ...

  • Sulfosalt Group - an overview ScienceDirect Topics

    The mineral occurs as metalliferous veins of Calcite, Aragonite, Argentiferous-galena, arsenic, and native silver. The mineral in purest form contains 59.75% Ag, 22.48% Sb, and 17.76% S. This silver ore is mined from the Comstock Lode, Nevada, United States, and many other silver mines in Mexico.

  • Bodie Mine (MRDS #10310698) AU, AG

    HISTORIC PRODUCTION (McCluskey, written communication, Report to Sierra Mines, Inc., 1947, cited in Chesterman and others, 1986, pg. 31; metric tons and grade were calculated by this MRDS reporter): Reported historic production from the Bonanza zone (area of Bodie Project) is more than 633,000 oz Au (19.7 metric tons, 1.67 oz Au/ton) and as many as 800,000 oz Ag (24.9 metric tons, 2.11 oz Ag ...

  • Full text of "E/MJ : engineering and mining journal"

    Search metadata Search text contents Search TV news captions Search radio transcripts Search archived web sites Advanced Search

  • Eagle Plains Confirms High-Grade Gold Mineralization

    King/Cole South (SMDI 2177): 31.93 g/t Ag, 1.55% Pb, 0.44% Zn over 0.28 m (drill hole) Management cautions that historical results were collected and reported by past operators and have not been verified nor confirmed by management, but form a basis for ongoing work in the Pine Channel property area.

  • Gooseberry Mine (MRDS #10310373) AU, AG

    Grab samples taken from dump at mine (1959) contained gold values ranging from 0.83 to 1.14 oz/t and silver values of 13.02 oz/t to 69 oz/t. Ave. Grade in 1990 194 ozs Au/ton and 7.24 ozs Ag/ton: Result: Ave. recovery 90.6% Au and 88.4% Ag.


    Comstock Forsyth Glen Wills: ... 7.53 metres @ 6.18 g/t Au and 90.9 g/t Ag from 219.72 metres down-hole, ... samples from which 3 kg was pulverised to produce a 30 g charge for fire assay’). In other cases more explanation may be required, such as where there is coarse gold that has inherent

  • Mineral Commodity Report 14 - Gold

    2017-2-9  Comstock lode in Nevada in 1859, the Homestake lode in ... (Au,Ag)Te 2 brittle 70.8 kg and measuring 17 x 40 x 70 cm, was found in Victoria, Australia, in 1869. New Zealand’s largest nugget was the 3 kg ... The mines at Bendigo produced more than 373 t of gold at grades mostly between 5 g/t

  • White Gold Corp. erwirbt QV-Goldprojekt von

    Leta Arm AreaWhite Gold Corp. erwirbt QV-Goldprojekt von Comstock Metals inclusive 230.000 Unzen abgeleitete Goldressource auf VG-Lagerstätte neben dem Grundstück Whitegold sowie neue ...

  • Monowai Mine, Waiomu, Thames-Coromandel

    Monowai Mine, Waiomu, Thames-Coromandel District, Waikato Region, New Zealand : An epithermal gold and silver mine operated from 1891 to 1915 producing 1,240 kg of bullion. Noted for presence of native gold and tellurides. Associated with Pb-Zn-Cu sulphides in the late stage ...

  • Proyectos Mineros - Servicio Geológico Mexicano

    Avino Silver Gold Mines Ltd / Samsung C T Corp. Mina Avino y San Gonzálo: Durango: Producción: Ag, Au: 176: Canadá / Corea: Avino Silver Gold Mines Ltd / Samsung C T Corp. El Laberinto (Jabalí) Durango: Exploración: Au, Ag: 177: Canadá / Corea: Avino Silver Gold Mines Ltd / Samsung C T Corp. El Hueco: Durango: Exploración: Au ...

  • Epithermal Alteration and Mineralization in the

    Situated on the east side of the Virginia Range (figure 1), Virginia City is the home of the historic Comstock mining district and was mined as a source of Au and Ag between 1859 and the 1960's.

  • Miner Stock - Hannan Metals Ltd.

    The drilling had defined a maiden resource at Kilbricken comprising 2.7 million tonnes at 8.8% zinc equivalent (see Kilbricken section) and is the Company’s flagship project. Hannan has continued the expansion of this resource – best drill hole to date, DH 17-3679-217, intersected 8m at 4.1% Zn, 33.7% Pb and 174 g/t Ag.

  • Comstock Enters Into Definitive Agreement for

    2 see richmont-mines About Comstock Metals Ltd. ... 1.65 g/t gold containing 230,000 ounces of gold at a 0.5 g/t gold cut-off (See Comstock July 8, 2014 News Release). ... AG wendet sich ...

  • Environmental geochemistry of abandoned mercury

    Historic production from Hg mines in Nevada exceeds 10,000 t (approximately 300,000 flasks; 1 flask=34 kg), about 90% of which came from the McDermitt mine (Willden, 1964, Johnson, 1977, Nobles et al., 1988). Geologic characteristics and Hg production of the districts studied are shown in Table 1.

  • Silver processing Britannica

    2020-7-6  Silver (Ag), like gold, crystallizes in the face-centred cubic system. It melts when heated to 962 °C (1,764 °F). With a density of 10.49 grams per cubic centimetre, it is the lightest of the precious metals. It is also the least noble of the precious metals, reacting readily with many common reagents such as nitric acid and sulfuric acid.

  • Argent — Wikipédia

    2020-7-1  Ag 100 %, Propriétés physiques; T ... L’argent provient de mines ou du recyclage. ... avec la découverte du filon Comstock au Nevada. La production d’argent mondiale a continué à grandir, passant de 40 à 80 millions d’onces de production annuelle durant les années 1870.


    2017-7-18  released into the Carson River-Lahontan Reservoir watershed as a by-product of Comstock Lode silver (Ag) and gold (Au) ore refining. Present-day Hg contamination is most severe in mine tailings, where total Hg concentrations can exceed several hundred/~g/g. Hg-laden tailings were also dumped

  • The 10 biggest silver mines in the world

    The mine was estimated to contain 442.4Moz of silver, including 254.8Moz of proven and 187.6Moz of probable silver reserves as of December 2011. The copper-silver mine is one of the three mines owned and operated by KGHM in the Legnica-Glogów copper basin of

  • Welcome to the Schindler Group Elevators, Escalators ...

    2020-7-6  Schindler’s Swiss-engineered elevators, escalators and moving walks keep the urban world moving, safely, comfortably and efficiently, 24/7 worldwide.

  • Welcome to the Schindler Group Elevators, Escalators ...

    2020-7-6  Schindler’s Swiss-engineered elevators, escalators and moving walks keep the urban world moving, safely, comfortably and efficiently, 24/7 worldwide.

  • A Review of Silver-Rich Mineral Deposits and Their ...

    District production is about 34,200 t Ag (1,100 Moz) from several dozen mines with average grades of 218 g/t Ag, 5.7% Pb, and 2.3% Zn. Individual veins were often dominated by a single metal, so average grades are not representative (White, 1998). Grades in the southern part of the Coeur d’Alene district (the Silver Belt) average about 650 g ...

  • 2006 Minerals Yearbook - Amazon S3

    2018-10-18  kilograms (kg) (8.9 million troy ounces) in 1998 to 196,000 kg (6.3 million troy ounces) in 2006, nonetheless, 2006 represented the 18th consecutive year in which production was in excess of 156,000 kg (5 million troy ounces). Production of gold was derived from

  • Stock Quotes, Business News and Data from Stock

    2020-7-2  Get the latest headlines on Wall Street and international economies, money news, personal finance, the stock market indexes including Dow Jones, NASDAQ, and more. Be

  • 2005 Minerals Yearbook - Amazon S3

    2018-10-18  been about 6,070 metric tons (t) [6.07 million kilograms (kg), or 195 million troy ounces], of which about 4,140 t (133 million troy ounces) have been produced in Nevada. This is significantly greater than the total production during the era of the California gold rush of 902 t

  • The Clubine property, Nelson area, British Columbia 2009 ...

    2015-12-2  intermittently between 1926 and 1942 by several operators, including Clubine-Comstock Gold Mines Ltd., producing 123,293 grams (3,900 oz) of gold, 239,463 grams (7,700 oz) of silver and 818 kg of zinc from 3,666 tonnes of ore. The workings and underground exploration were

  • Printed Electronics USA 2008: - IDTechEx

    Siemens AG - Materials Microsystems: Siemens AG: Siemens Technology Accelerator GmbH: SIFMAR - Solvay Industrial Foils: Sihl: Sihl Bern AG: SII Printek Inc. Silberline Ltd: Sim4tec GmbH: Singapore Institute of Manufacturing Technology: Singulus Mastering B.V: SiPix Imaging Inc. SK Kassetten GmbHCo. KG: SKC Europe GmbH: SmartSensor telemed ...

  • Dyscrasite: Mineral information, data and localities.

    2020-6-17  Ste Marie-aux-Mines ⓘ Neuenberg PT N°23-24, H. BARI 1982, Minéralogie des filons du Neuenberg à Sainte Marie aux Mines (Haut-Rhin). Sankt Jakob vein ⓘ Gabe Gottes Mine Wittern, Journée: "Mineralien finden in den Vogesen", von Loga (Cologne), 1997

  • Buy Silver Bars At Low Prices With Silver

    Buy Silver Bullion Bars (.999+ Pure, New) from Silver - dozens in stock. Fast secure shipping. Call us at 888-989-7223.

  • IRW-Press: Ihr Erfolg im deutschsprachigen

    2020-6-15  Econnabis SAS ist eine operative Tochter von Plena Global Holdings Inc. („Plena Global“), einem Großproduzenten und Lieferanten von Cannabisinhaltsstoffen in medizinischer Qualität, und soll die von EXM geplante Verarbeitungsanlage in Portugal mit bis zu 200 kg GMP-konformem THC-Destillat beliefern. Mit dieser Vereinbarung ...