 | | Journal (article/letter/editorial) | | the low-sulfidation epithermal Emperor gold deposit, Vatukoula, Fiji’’ (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 302–304) 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 (article/letter/editorial) | | data reveal benleonardite to be a member of the pearceite-polybasite group LUCA BINDI1,*, CHRISTOPHER J...exhibits the structure observed for minerals of the pearceite-polybasite group. The structure consists of the...the mineral must be considered a member of the pearceite-polybasite group. A recalculation of the chemical...WO R D S : benleonardite, crystal structure, pearceite, polybasite, Ag-sulfosalt, Bambolla. Introduction...collected from the spoil tips of the abandoned Bambolla mine, Moctezuma, Sonora (Mexico). It was described as |  | | 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 “Tharshish and the Isles,” thought |  | Andreeva, Elena D., Matsueda, Hiroharu, Okrugin, Victor M., Takahashi, Ryohei, Ono, Shuji (2013) Au-Ag-Te Mineralization of the Low-Sulfidation Epithermal Aginskoe Deposit, Central Kamchatka, Russia. Resource Geology, 63 (4) 337-349 doi:10.1111/rge.12013 | Journal (article/letter/editorial) | | The major ore minerals in these veins are native gold, altaite, petzite, hessite, calaverite, sphalerite...minerals are pyrite, galena, and acanthine. Primary gold occurs as free grains, inclusions in sulfides, and...constituent in tellurides. Secondary gold is present in form of native mustard gold that usually occur in Fe-hydroxides...bogdanovite, bessmertnovite metallic alloys, secondary gold, and various oxides, formed under intensely oxidized... Kamchatka, native gold, quartz-adularia veins, tellurides. 1. Introduction Gold has been produced from |  | | Journal (article/letter/editorial) | | No. 4, pp. 267–298. Invisible and Microscopic Gold in Pyrite: Methods and New Data for Massive Sulfide...predomination of pyrite. The portion of such “invisible” gold ranges from <10% (Galkinsk deposit) to 85% (Uchaly...“invisible” gold occurs as micron to nanoscale particles of Au minerals. The portion of gold structur...pyrostilpnite, argentotetrahedrite, pearceite, prous tite), Au–Ag alloys (from gold of high fineness to küstelite)...the Galkinsk deposit. Nanos cale (1–50 nm) native gold (spherical and diskshaped particles, flakes) with |  | | Book | | 1umankind since prehistoric times such as quartz 1nd gold, but also ~minerals first described quite :ecently...Crystals up to 140mm (5½ 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 ••• 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) | | 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) | | .. 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 it’s a wonderful thing to have it... (Jeff Scovil photo)” 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 | | humankind since prehistoric times such as quartz and gold, but also minerals first described quite recently...Crystals up to 140mm (5'A in) long occurred in the Ray mine and in Bisbce, Arizona, USA. Very fine spincl-law...electronics, electrical engineering, ingredient in gold alloys. f I Silver Ag CUBIC • • • Properties:...100 mm (4 in) long, come also from the San Gcnaro Mine in Huancavclica and Uchucchaqua, Peru. New finds...electronics. Gold, 411 mm. El Dorado, California. U.S.A. Gold Au CUBIC • • Properties: C gold-yellow; |  | | 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 |  | Vikentyev, Ilya, Vikent’eva, Olga, Tyukova, Eugenia, Nikolsky, Maximilian, Ivanova, Julia, Sidorova, Nina, Tonkacheev, Dmitry, Abramova, Vera, Blokov, Vyacheslav, Spirina, Adelina, Borisova, Diana, Palyanova, Galina (2021) Noble Metal Speciations in Hydrothermal Sulphides. Minerals, 11 (5) 488 doi:10.3390/min11050488 | Journal (article/letter/editorial) | | 2021 Abstract: A significant part of the primary gold reserves in the world is contained in sulphide ores...ores, many types of which are refractory in gold processing. The deposits of refractory sulphide ores...main potential source of gold production in the future. The refractory gold and silver in sulphide ores...metals (NM) not thoroughly investigated. For gold and gold-bearing deposits of the Urals, distribution...various forms of invisible gold—which includes nanoparticles and chemically bound gold—in sulphides is discussed |  | | 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, László 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 | | R. (1919) On the origin of Kuroko of the Kosaka mine. J. Geol. Soc. Japan, 26, 107-132 (in Japanese)...model ..... ............................. 1.4.6.6. Gold precipitation due to mixing of fluids in epithermal................ 1.5.1. Paleogeography and stress field ...................................... 1S.2. Volcanic........................................... 1.6.3. Gold-quartz vein-type deposits (mesothermal-hypothermal...and geochemistry ...................... 1.6.3.2. Gold-quartz vein-type deposits in Yamizo Mountains, central |  | Tombros, S., Seymour, K. S., Williams-Jones, A. E. (2010) Controls on Tellurium in Base, Precious, and Telluride Minerals in the Panormos Bay Ag-Au-Te Deposits, Tinos Island, Cyclades, Greece. Economic Geology, 105 (6) 1097-1111 doi:10.2113/econgeo.105.6.1097 | Journal (article/letter/editorial) | | Under these conditions, it reacts with the dissolved gold and silver species to deposit telluride minerals...CoNiAs, SnO2, MnTi, and elemental silver, antimony, gold, selenium, tantalum, and cadmium. The X-ray lines...00 0.00 0.00 0.00 0.00 0.01 99.86–99.95 Native gold (n = 5) 16 100.00 55.4 0.00 99.99 100.00 0.98–0...central part of stage VIII veins contains native gold (up to 0.02 wt % Te) and silver (up to 0.27 wt %...involved in gold and silver 0361-0128/98/000/000-00 $6.00 transportation. Silver and gold activities |  | | Journal (issue) | | 5 Cover 1. Hambeigite. Ranglad 'skoye pegmatite field, E. Pamirs. 8x 4 cm. Specimen:A.M. Skrigitil'. Photo:...Unusual Crystallization or... Mineral Pathology? //Mine mlogicheskii zhurnal. 1989.1.11, N 2. p.96-98. 10...mapping and prospecting works were conducted here for gold, diamonds, platinum, phlogopite mica, and rare and...outstanding scientist, a discoverer of the Kolyma gold-bearing region, started his labour and scientific...relation of primary gold deposits to Post-Jurassic intrusions and discovered a gold deposit. This alone |  | | Book | | ! mm A FIELD GEMS •* m a GUIDE AND TO MINERALS THE OF ; M EXICO mm mm ■..r:. _»p By PAUL...WILLARD JOHNSON V’ wj4J SbSJk? G E1ML E© ® 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) | | into the Palaeo Figure 3. During the geological field season in G reenland—June to A ugust—there are very...down the Danube River, to Vienna. The Austrian Emperor paid the freight, and the collection was temporarily...valued at 6,000 to 7,000 Guilders; the Emperor gave Giesecke 1,000 gold Ducats and a beautiful golden box...gemstones and decorated with the monogram of the Emperor. These travels were G iesecke’s last major journey;...Amitsoq in the Nanortalik area (Ni-Pt); Frederik VII mine near Julianehab (Qaqortoq) (Cu-Se-Te); Kobbermine |  | | Book | | Springfield show ( 1995: 582). Madawaska [Faraday] mine near Bow Lake, Hastings County. Some of the world's...property of, the old Madawaska uranium mine (called the Faraday mine before 1964). The mineral assemblage...Cowgill, 1977). LATINAMERICA BRAZIL Jacupiranga mine, Sao Paulo. Among the crystallized minerals in the...Oblast. Alpine-type clefts in the famous Dodo quartz mine commonly contain ilmenite, occurring as lustrous...ilmenite crystals as described here for the Dodo mine. In general, ilmenite crystals from the Subpolar |  | | Book | | some of which may be carried out directly in the field. In this introduction, techniques requiring more...use. Later, when he became acquainted with ores (gold, copper, tin, iron, etc.), he began looking eagerly...sand on a beach) are formed, such as deposits of gold, monazite or ilmenite. Lighter, non-metallic minerals...insoluble and less prone t o oxidation, such as gold, platinum , cassiterite, w olframite, magnetite...then wiped clean and investigated with a lens. In field work, however, this method is not always practical |  | | Book | | pleased about the growing interest in my special field of study. I t was my idea to start the work for...were collected by the writer himself during his field trips and journeys. The Locality Index has again...form of this book will also win new friends in the field of ore-microscopy. A prerequisite is always t h...accomplished, of possible means by which problems in this field are to be handled, and of some aids to the work...Quartz alone in just one group of ore deposits (the gold-quartz deposits), and he will not expect t h a t | | | Book | | illustrated Encyclopedi of the World’s Rocks and Mine re L A R E N MI OF THE WORLD Rudolf Duda and...some of which may be carried out directly in the field. In this introduction, techniques requiring more...use. Later, when he became acquainted with ores (gold, copper, tin, iron, etc.), he began looking eagerly...sand on a beach) are formed, such as deposits of gold, monazite or ilmenite. Lighter, non-metallic minerals...are insoluble and less prone to oxidation, such as gold, platinum, cassiterite, wolframite, magnetite or |  | | Journal (issue) | | classification of native gold and Au-Ag-mineral samples 10 1. Historical highlights of gold mining in Romania...Romania 10 2. Overview of the gold mining in Romania 12 3. The metallogenic subprovince related to the...of native gold from Romania in Brad Gold Museum 65 6. Alluvial gold occurences 67 7. Gold from occurrences...world in Brad Gold Museum 68 Characterization of samples in the mineral collection of the Gold Museum of...Silicates 119 References 120 2 Introduction The Gold Museum of Brad is unique among other museums in |  | | Book (volume) | | Jixiang Sui Geochemistry of Tourmaline from the Laodou Gold Deposit in the West Qinling Orogen, Central China:...Polufuntikova and Lyudmila Yu. Kryuchkova Disseminated Gold–Sulfide Mineralization in Metasomatites of the Khangalas...Kardashevskaia Types of Tellurium Mineralization of Gold Deposits of the Aldan Shield (Southern Yakutia,...Bukhanova, Galina A. Palyanova and Valery M. Chubarov Gold Mineralization at the Maletoyvayam Deposit (Koryak...Borovikov, Nikolay Karmanov and Sergei Kuznetsov Native Gold in the Chudnoe Au-Pd-REE Deposit (Subpolar Urals |  | | Report (volume) | | Prepared for the Society of Economic Geologists Field Conference — 4-13 September 1999 Series Editor:... SRO Ler La Os a A vi RO, 1 Epithermal Gold Deposits: I. Hydrothermal Activity and Processes...ssee eae The Central Slovakia Neogene Volcanic Field: A Review MUR ONC oS LONG SOMA VYAAO) SURE COV Os...181 Metallogeny of the Central Slovakia Volcanic Field PONE Mecencn a Cenc aiste save BST en elects Serine...elects aa eine ETE 197 High-Suifidation Epithermal Gold Deposit at Klokoc-Podpolom UeaSIopitee® ZAmoveay |  | | Book | | [ [ 23 I 1992 [ 65-128 65-136 65-128 1-96 GOLD-II] 1-112 MMEE•] 25 I 1994 1-80 ARIZONA-I] ...ARIZONA-Ill] 337--400 257-336 [ 257-320 [ [ GOLD-I ] 321--412 ARIZONA-V] 265-352 257-320 353-400...On a spectacular find of crocoite in the Adelaide mine, Dundas, Tasmania (by A. H. Chapman) 3:111-113 ADOLFSSON...AJO Famous mineral localities: the New Cornelia mine, Ajo, Arizona (by W. J. Thomas & R. B. Gibbs) 14:283-298...Alabama (by H. Barwood & B. Hajek) 9:388391 Notable gold occurrences of Georgia and Alabama (by R. B. Cook |
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