 | | Journal (article/letter/editorial) | | the low-sulfidation epithermal Emperor gold deposit, Vatukoula, Fiji D. W. Pals and P. G. Spry Department...The epithermal, low sulfidation Emperor gold telluride deposit in Fiji, hosted by Late Miocene-Early Pliocene...western flank of the Tavua Caldera. Gold is largely in the form of āāinvisibleāā gold in arsenian pyrite...pyrite but 10 to 50% of gold is in the form of precious metal tellurides. Gold mineralization occurs in steeply...where the flatmake intersects steep structures. Gold-rich tellurides preceded the formation of silver-rich |  | | Journal (article/letter/editorial) | | Mineralogical and GeochemicalStudiesof the Emperor Gold Telluride Deposit, Fiji M. AHMAD, NorthernTerritoryGeological...Mba Volcanics,of Mioceneage,in the north of Viti Levu, Fiji. The veinsfilledfracturesthat developedmainlyin...are dominantly quartzwith minorpyrite,tellurides,gold,sphalerite,arsenopyrite,chalcopyrite,tetrahedrite...H2S,COa, and HaTe, with lossof H2Sthe main causeof gold deposition. Assuming only partialequilibriumin the...It is located at Vatukoula about 8 km inland from the northern coastof Viti Levu, Fiji (Fig. 1). THE |  | | Journal (article/letter/editorial) | | the low-sulfidation epithermal Emperor gold deposit, Vatukoula, Fijiāā (2003) by D. W. Pals and P. G...paper on telluride mineralogy in the Emperor gold mine in Fiji, Pals and Spry (2003) referred several...distribution of individual tellurides in the Emperor mine, Pals and Spry (2003, pp 302ā304) noted that...that, in a general sense, I had found that the gold-rich assemblage calaverite-krennerite-sylvanite occurred...the silver-rich assemblage petzitehessite-native gold extended down to deeper levels. They then commented |  | | Journal (issue) | | . . . . 277 by D. London The Emperor mine, Vatukoula, Viti Levu, Fiji . . . . . . . . . . . . . . ....sale of the book. The first print, entitled āThe Mine with the Iron Door,ā depicts a fantasy underground...underground collecting scene at the famous lost gold mine in the Catalina Mountains above Tucson. The print was...scene at the Old uma mine near Tucson (appropriate, inasmuch as he wrote the Old uma mine chapter in the book)...ārunnerā is someone who ārunsā with minerals from the mine or other exposure to dealers, to sell specimens |  | | Journal (article/letter/editorial) | | benleonardite to be a member of the pearceite-polybasite group LUCA BINDI1,*, CHRISTOPHER J. STANLEY2...structure observed for minerals of the pearceite-polybasite group. The structure consists of the stacking...must be considered a member of the pearceite-polybasite group. A recalculation of the chemical data listed...benleonardite, crystal structure, pearceite, polybasite, Ag-sulfosalt, Bambolla. Introduction BENLEONARDITE...collected from the spoil tips of the abandoned Bambolla mine, Moctezuma, Sonora (Mexico). It was described as |  | | Journal (article/letter/editorial) | | National University] at 06:43 31 December 2014 mine in Colorado, and they found virtually the entire...tetrahedrite and pyrite specimen from the Anchor mine, Park City, Utah. The specimen was in the stock...examples at the present time are from the Sweet Home mine, near Alma, Park County, Colorado, where it occurs...with enargite and fluorite come from the Longfellow mine, Red Mountain district, San Juan County (D. Bunk...argentiferous tetrahedrite. The Freeland-Lamartine mine, near Idaho Springs, Clear Creek County, has also |  | | Journal (article/letter/editorial) | | from hundreds of localities worldwide, and unlike gold, silver is quite a reactive element, forming more...to be the third metal widely utilized by humans (gold and copper were the first). The earliest known siIver...The Iliad. In ancient times silver was rarer than gold. This probably reflects the fact that the earliest...in the ancient world, was considerably rarer than gold. Chlorargyrite appears to have been the fvst silver...King Solomon is said to have received shipments of gold and silver from āTharshish and the Isles,ā thought |  | Rottier, B., Kouzmanov, K., WƤlle, M., BendezĆŗ, R., FontbotĆ©, L. (2016) Sulfide Replacement Processes Revealed by Textural and LA-ICP-MS Trace Element Analyses: Example from the Early Mineralization Stages at Cerro de Pasco, Peru. Economic Geology, 111 (6) 1347-1367 doi:10.2113/econgeo.111.6.1347 | Journal (article/letter/editorial) | | Fuertes-Fuente et al., 2000), as well as orogenic gold (e.g., Genkin et al., 1998; Haeberlin et al., 2004;...formation. In contrast, in the present study we report field evidence that the pyrrhotite pipes and their polymetallic...mineralization styles at Cerro de Pasco, compiled from field observations and the previous work of Rogers (1983)...cross section along C-D profile, compiled from field observations and previous work of Einaudi (1968...120Ā° fault directions. In the deeper part of the mine (levels 3600 and deeper, Fig 2C) they are lithologically |  | Tombros, S. F., St. Seymour, K., Williams-Jones, A. E., Spry, P. G. (2008) Later stages of evolution of an epithermal system: AuāAg mineralizations at Apigania Bay, Tinos Island, Cyclades, Hellas, Greece. Mineralogy and Petrology, 94 (3) 175-194 doi:10.1007/s00710-008-0019-0 | Journal (article/letter/editorial) | | high-angle quartz veins that extend for at least 200 m. Goldāsilver mineralization, in association with more...in an open system, with a metasedimentary source. Gold and silver deposition was associated with degassing...and Pefka, Thrace (Voudouris et al. 2006). 176 Goldāsilver mineralization at Apigania Bay, Tinos Island...2001). Epithermal gold mineralization at Apigania Bay is one of several granite-related gold-silver occurrences...Rammelsbergite Laggisite Cassiterite Galena Acanthite Polybasite Argentopyrite Covellite Anglessite Cerussite |  | Li, Zhan-Ke, Li, Jian-Wei, Cooke, David R., Danyushevsky, Leonid, Zhang, Lejun, OāBrien, Hugh, Lahaye, Yann, Zhang, Wen, Xu, Hai-Jun (2016) Textures, trace elements, and Pb isotopes of sulfides from the Haopinggou vein deposit, southern North China Craton: implications for discrete Au and AgāPbāZn mineralization. Contributions to Mineralogy and Petrology, 171 (12) doi:10.1007/s00410-016-1309-x | Journal (article/letter/editorial) | | Sb. Invisible Au mostly occurs as lattice-bound gold in Py2 (up to 92 ppm Au) and Py3 (up to 127 ppm...The field, textural, compositional, and lead isotopic data led us to conclude that the early gold-bearing...not be genetically related to each other. Keywords Gold veins Ā· AgāPbāZn veins Ā· Trace elements Ā· In situ...situ lead isotopes Ā· Haopinggou Introduction Gold vein deposits in Precambrian metamorphic terrains constitute...constitute one of the worldās most important gold resources, both in terms of historical production and |  | | Journal (article/letter/editorial) | | 2005 Invisible Gold from the Hishikari Epithermal Gold Deposit, Japan: Implication for Gold Distribution...presence of invisible gold was confirmed in arsenian pyrite from the Hishikari epithermal gold deposit, Kagoshima...analyses. The relative concentration of invisible gold may be positively correlated with As contents (0...having higher As contents accompanied by invisible gold occur dominantly in the middle stage of fine-adularia-quartz...Keywords: invisible gold, arsenian pyrite, Au, As, correlation, EPMA, SIMS epithermal gold deposit, located |  | | Book | | Papua-New Guinea (speciĀ fically Bougainville), and Fiji. Cyprus, Ceylon, the Philippines, and Japan are...27 Tasmania 13 New Zealand 2 Bougainville.... 1 Fiji 1 New Caledonia... 2 46 102 At the head of each...Boettcher, T. J. Casadevall, Peter Deines, D. P. Gold, D. M. Kerrick, M. L. Keith, A. W. Rose, C. P. Thornton...50, p. 164-168 Heim, Ī., 1 9 3 4 , The molybdenum mine at Azegour: Soc. Econ. Geol., v. 29, p. 76-83..., Allanite et epidote dans des corneennes de la mine d'Azegour, Haut-Atlas: Serv. Geol. Maroc. Notes |  | | Journal (issue) | | :Refugio Jlline Famous mineral localities: The Refugio mine, Municipio de Choix, Sinaloa, Mexico .............Front Cover Smithsonite, 4 cm wide, from the Refugio mine, Choix, Sinaloa, Mexico. William Dameron collection;...that were collected and stored more carefully. The mine is still being actively worked today, as the city...6) San Pedro Corralitos, Amatitlan, San Francisco mine Mexico V.Ā· (2008, vol. 39, no. 6) History, Milpillas...minerals (under the company name Xtal). The Refugio mine may not sound familiar at first, but that's because |  | | Catalog/List | | extremely ine, specimens from the Mammoth-St. Anthony Mine of Tiger, Arizona: now a vanished place alive only...potential mineral buying area, or go into another mine. He travelled to areas that had seen few Americans...alone someone hunting crystals. He went to Bolivia, Fiji, Ethiopia, Rhodesia, and many other places. Given...Atacama Desert to collect Underground Nikolaevskiy Mine, Dalnegorsk, Russia, 1993. "RPG," Artigas, Uruguay...collection that he donated to the Neto and Ed Swoboda to mine University of Arizona RRUFF Project. Another was |  | | Journal (article/letter/editorial) | | exceptionally largeāapproximately 257 tonnes (t) of gold and 6,000 t of silver (Bonham and Papke, 1969; Smith...unpub. report, 1968). Placer gold was discovered in 1850 and lode gold-silver deposits were discovered...member of the Kate Peak Formation (Fig. 3), and field relations do not make the relative ages clear. Structure...Chollar South C Tun nel Brunswick Decline Gold Hill E. Yellow Jacket CĆ BĆ Occidental OL L...productive part of the Comstock lode at the Overman mine, the Silver City lode (Fig. 2) strikes about N 50Ā° |  | | Journal (issue) | | Advertising Manager Thomas P. Moore Tpmoorel@cox.net A gold specimen from the Spanish Dry Diggings, Eldorado...EUCLASE with Albite, 11.2 cm, from the La Marina mine, Muzo District, Boyaca Department, Colombia. See...mineral room wall. And in 2016 we began presenting gold medallions-large pins with a magnetic clasp--that...While other children struggled mightily to avoid field trips and family outings to the purportedly dusty...specimens. ~ How, after being inactive in this field for several years, we have accumulated a line stock |  | | Journal (issue) | | Beryozovsk, Adun-Chilon, and the Zmeinogorskii mine appear to be represented the most completely and...mines), malachite (the Gumeshevskii mine), crocoite (the Beryozovskii mine), jasper (Orsk), and others. Large...the museum is that of J .K. Freiesleben, a Saxon mine broker (1774-1846). It contains minerals from classic...collected by museum staff members during their field trips. In addition to minerals from the abovementioned...from the Demidov family, the former owners o f the mine) are also present here. Jasper and rhodonite end |  | | Journal (article/letter/editorial) | | of the coupled behavior of gold and silver in hydrothermal processes: Gold ļ¬neness, Au/Ag ratios and their... Rickard Keywords: Hydrothermal gold deposits Ore geochemistry Gold ļ¬neness Au(Ag)-bearing pyrite Thermodynamic...modeling Au/Ag ratios a b s t r a c t An estimation of gold ļ¬neness deposited from aqueous sulphideāchloride...of hydrothermal gold deposits of different types are summarized. Wide ranges of gold ļ¬neness and low...ore-forming solutions (types IāIII). High ļ¬neness gold and high values of (Au/Ag)ore ratio of AuāTe, AuāAs |  | | Book | | chequered history. During the Austrian regime, the emperor Josef II acquired some of the cabinets for the...Wyartite, Vandenbrandeite, Becquerelite Uraninite, gold Veszelyite Scorzalite Shinkolobwe, Shaba, Za'ire...particularly interesting collection of miners' lamps and mine surveying instruments. Ancient and mediaeval mining...worn by mine officials of Saxony on ceremonial occasions. A special attraction is a model mine, 20m below...N. from the main railway station, landmark is a mine headframe. Tues.- Fri. 8.30-17.30 hrs.; Sat.- Sun |  | | Book | | ! mm A FIELD GEMS ā¢* m a GUIDE AND TO MINERALS THE OF ; M EXICO mm mm ā ..r:. _Ā»p By PAUL...WILLARD JOHNSON Vā wj4J SbSJk? G E1ML EĀ© Ā® K FIELD GUIDE to the GEMS and MINERALS of MEXICO (Exclusive...Eulalia District....... El Potosi Mine............. San Antonio Mine....... Cusihuiriachic District................................. Minerals of Ojuela Mine .... . Velardena District.........................Guanajuato District ..................... El Sanlin Mine......................... San Miguel de Allende |  | | Journal (issue) | | drawi119. Note the labels marked #Presented by the w Emperor of Russia, 1869 a11d for a flint specime11 presented...National Museum in 1 984. CNM 49933; Las Chipas Mine, Son ora, Mexico. 6. 5x5.5x3 .5 cm. Photograph by...cerargyrite. n AMNH C56223. Chlorargyrite from Las Chipas Mine, Sonora, Mexico. 5.Bx4.0x3 .0 cm. AMNH photo by...collection o f Professor H e n ry How 10 o f Nova Scotia mine rals, in 1 880. The e m i n e n t C o l u m b ia...Mines by the owner of the Pedrazzini (Las Ch ispas) mine in 1 9 1 0. According to Edward L. DuĀ fourcq, a |  | | Journal (issue) | | .. 36 Articles and puzzles 20 regular columns Field Notes.......................................6 Lapidary...PM Reader Letters IELD NOTES EDITORIAL the mine where we could oversee the valley and stream when...there?) Rock & Gem has been a favorite magazine of mine for years, so itās a wonderful thing to have it... (Jeff Scovil photo)ā Come Together over R&G Field Notes.indd 6 ART MARY ROBERTSON Art Director ...opinion, the specimen photo in the September 2013 Field Notes column, submitted by Dave Collins, is of fossilized |  | | Book (chapter) | | schorl, Egleston 350 (1892). electron = Ag-rich gold or amber, Bukanov 173, 345 (2006). electrum (Homer)...(1892). electrum (Pliny) (intermediate) = Ag-rich gold or Au-rich silver-3C, Nickel & Nichols 245 (1991)...amber, LĆ”szlĆ³ 65 (1995). Elektrum (Pliny) = Ag-rich gold or Au-rich silver-3C, Hintze I.1, 239 (1898). elelite...41-50, 103 (1968). Emperor-lite = synthetic gem corundum, Nassau 210 (1980). Emperor of China = 40 x 60...60 cm. rhodochrosite, MR 42, 271 (2011). Emperor of India = 10 kg. pale-green gem Fe2+-rich beryl, LAP |  | | Book | | 1umankind since prehistoric times such as quartz 1nd gold, but also ~minerals first described quite :ecently...Crystals up to 140mm (5Ā½ in) long occurred in the Ray mine and in Bisbee, Arizona, USA. Very fine spinel-law...electronics, electrical engineering, ingredient in gold alloys. 9 Silver Ag CUBIC ā¢ā¢ā¢ Properties: C...100 mm (4 in) long, come also from the San Genaro Mine in Huancavelica and Uchucchaqua, Peru. New finds...electronics. Gold, 48 mm, El Dorado, California, US.A. Gold, 68 mm, Eagle's Nest Mine, California, US |  | | Journal (issue) | | Hazen The best grossular garnets from the Jeffrey mine, Asbestos, Quebec ........ .......................1972, and considered to be the finest known Jeffrey mine grossular specimen. Marco Amabili collection; James...the Dana format somewhat when Pough published his Field Guide to Rocks and Minerals in 1953, and Sinkankas...know that pickings were pretty slim in those days, field collecting ("rockhounding") and rock shops were... Colorado (two), New Mexico (the Bingham Canyon mine), Nevada, Arizona (two), Mexico, Brazil, Northern |
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