 | | Journal (article/letter/editorial) | | 1 –9 Published online November 2012 Article Opal, a beautiful gem between myth and reality Franca...artists and the passion of connoisseurs. The term opal is derived from the ancient Greek and underwent...synonyms appear in mineralogy and gemology texts. The opal is frequently mentioned in historical sources of...works of the Middle Ages. In the Roman Age, the opal gem was very much appreciated, considered as a sacred...its commercial value. Beside its decorative uses, opal also assumed roles in short-lived fashions: for |  | | Book | | Kristalle siche unter Bergwerk, Mine, Grube (in Betrieb) Bergwerk, Mine, Grube (außer Betrieb) Durchmesser...Albit, Beryll, Bleiglanz. Diopsid, Epidot, Granat, Opal, Prchnit, Quarzzwill. (Ja paner Gesetz!) (84/11/21-25)...) (DGK 17/ E/7) X X „Leonie“, „Minister Falk“, „Maffei I u. II“ u.a. (HF): Apatit, Beraunit, Crandallit...Ilmenit, Magnetit, Montmorillonit, Natrolith, Olivin, Opal (milchig), Phillipsit (igelförmig) (52/91). Göpfersgrün:...Chalccdon, Cuprit, Limonit, Malachit, Manganomelan, Opal, Pyromorphit, Quarz (52/205). Goslar: (Goslar/Nds |  | | Book | | 2013). MALAWI Mount Malosa, Chilwa alkaline province, Zomba district. "Illite" is the name of a series...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 |  | | Book | | Nephrite Niccolo Cat's-eye Olivine Onyx Oolite Opal Owarovite Touchstone Pastes Peridot Pearl False...(known by which he assumed in learned men who Italy, rendered the name of Agricola, where he studied...who distributed them into distinct classes. In Italy, the works of Andrea Cesalpino, of Camillo Leonardo...varieties of amethyst, rock crystal, plasma, agate, and opal; amongst the fluorites is jaspers, obsedian, the...some other equally bright with transmitted light opal with it is olive. colour, but INTRODUCTION |  | | Journal (article/letter/editorial) | | Nontronite Nosean Nsutite Nyerereite Olivenite Olivine Opal Orpiment Otavite Paladium Paragonite Paralstonite...hanging wall. During a subsequent mining period, the mine was re-opened to recover sideritic parts of the...you look for a mine look near a mine”. This includes the imperative “if you look for a mine look for smelting...also for the chrome diopside found at Outukumpu mine, a mineral that is first and foremost recognized...According to the Raw Materials Group (Sweden), the world mine production in 2005 stood at 19.3 m t metal content | | | Journal (article/letter/editorial) | | Nontronite Nosean Nsutite Nyerereite Olivenite Olivine Opal Orpiment Otavite Paladium Paragonite Paralstonite...hanging wall. During a subsequent mining period, the mine was re-opened to recover sideritic parts of the...you look for a mine look near a mine”. This includes the imperative “if you look for a mine look for smelting...also for the chrome diopside found at Outukumpu mine, a mineral that is first and foremost recognized...According to the Raw Materials Group (Sweden), the world mine production in 2005 stood at 19.3 m t metal content |  | | Book (volume) | | eliminate journals to be than more article opal, the announcing to of color in cause merits...musec, museum, N north nac national muzeum Italy, izvest izvestiya Nachf j journal nat national...periodical sep separate ser serial sess session,-aI pers personal comm communication phil philosophic...professor, professional, SwFr Swiss Franc prov province symp symposium Ps peseta t tom, tome, ps...Anglo-American Cataloging Chicago, xxii, 409 p; AMERICAN OPAL SOCIETY from Rules. rev 1974 periodicals 1908 |  | | Journal (issue) | | Gujar Killi Emerald Deposit, Northwest Frontier Province, Pakistan G a r y W Bowersox and Iawaid Anwar...FEATURES 25 Beryl Gem Nodules from the Bananal Mine, Minas Gerais, Brazil A n t h o n y R. Kompf and...Carl A. Francis 30 "Opalite": Plastic Imitation Opal with True Play-of-Color Iohn I. Koivula and Robert...Manager. For sirbscriptions and back issues i n Italy, please contact Istituto Gemmologico Mediterraneo...Mediterraneo, Via Marmolaia #14, 1.38033, Cavalese TN, Italy. To obtain a Japanese translation of Gems d Gemology |  | | Journal (issue) | | TECHNIQUES 198 Pyrope from the Dora Maira Massif, Italy Alessandro Guastoni, Federico Pezzotta, Margherita...purplish pink garnets from the Western Alps of Italy. 206 Jeremejevite: A Gemological Update Kenneth...TECHNIQUES PYROPE FROM THE DORA MAIRA MASSIF, ITALY By Alessandro Guastoni, Federico Pezzotta, Margherita...1990s from the Dora Maira Massif, Western Alps, Italy. These crystals have yielded pale purple to purplish...Properties of sample pyropes from the Dora Maira Massif, Italy. Weight (ct) 0.76 0.27 0.32 0.50 0.26 0.28 0.49 |  | | Journal (issue) | | News International • Australia’s Ellendale diamond mine opens • Aquamarine and spessartine from Tanzania...from the Erongo Mountains, Namibia • New morganite mine in Madagascar • Namibian gem localities • New opals...diamonds shown here are from Canada’s Ekati Diamond Mine™, which started production in 1998. The necklace...the opening of Canada’s first diamond mine, the Ekati Diamond Mine™, in 1998, but a number of other projects...enter the world market came from the Ekati Diamond Mine™, which opened in 1998 after decades of exploration |  | | Book | | fancy (variegated) marbles 'in this country; and Italy, Greece, and' Ireland furnish the materials for... . 297 Opal ........................ ..'. ..... ... .......... . . . . .. 299 Fire opal ............ . . . . . . . . . . . . . . . . . .. 305 Semi-opal .. .. .. _. . . \. ...V . .. .. .. .. .. .. .. ...densed either from a. gelatinous condition like opal, when they are named porodine, or from a state of...mineral, especially rock-salt, lime stone, chalcedony, opal, limonite, has been deposited from a fluid dropping |  | | Journal (issue) | | Stelleriet Belgische fluorescerende mineralen Oryctics Mine eralogiische Kring Antwe erpen vzw Oprichtin ngsdatum...kleur van een min neraal. Voor wetenschap ppers – mine eralogen – betekent een mineraal een studieobject...ars die vanuit een initiiële belangstellling in mine eralogie evo olueren naar ee en belangsttelling...duur. De e term "orycctognosie" w was synoniem voor mine eralogie, terrwijl men me et "oryctogrrafie" (een...toch ten ha op de webpagina van Mindat o over dit mine eraal. Toch moet je Min ndat af en ttoe ook eens |  | | Book | | infancy; we are. imperceptibly acquainted. with Italy ; and, being favoured by nature, or infpired by...civilized nation, have been emulous to embellifh Italy, and to give teftimony to its highly deferved celebrity...which ,prove, that ingenious men may- yet confider Italy .in a new point of view. .It would be ungrateful...PREFACE. v ‘ r. Ferber among thofe tha found in Italy i1/ obje&s, • Uncle Arius null; velartent tempora...Switzerland,i France,. England, Bohemia, Hungdy, and Italy, in order to enfarge and'', reaify his ideas, and |  | | Book | | logical periodicals of England, France, Germany and Italy; with the names of which classical students will...modern production. quite la Chausse, Chausse, Maffei, P. Gemme Roma, Gemme vols., : Roma, 1686...antiche di Dom. de Rossi colle sposizioni di A. Maffei, Roma, 1707. Stosch, Gemm.ae antiquae caelatae...Pliny the younger while he was Propraetor of the province of Pontica, 103 to 104 A.D., Letter to Trajan... said to that the packet is have come from a mine sealed with his on which was a quadriga own |  | | Book | | District.) ON THE COVER: Miners pose at the Central Mine in Stewartville, c. 1888. (Courtesy Black Diamond...June 14, 1861, and operated the Black Diamond Coal Mine in Nortonville until 1885. (Courtesy Black Diamond...Gayle Oberti Jenkins, Elmer “Jack” Lougher, Betty Maffei, Robert McAvoy, Mary Minaglia, John Nicholls, Florence...curator, Museum of the San Ramon Valley; Betty Maffei, executive director, Contra Costa County Historical...Historical Society History Center; John Waters, retired mine manager, Black Diamond Mines Regional Preserve; |  | Melekestseva, Irina Yu., Maslennikov, Valery V., Tret’yakov, Gennady A., Nimis, Paolo, Beltenev, Victor E., Rozhdestvenskaya, Irina I., Maslennikova, Svetlana P., Belogub, Elena V., Danyushevsky, Leonid, Large, Ross, Yuminov, Anatoly M., Sadykov, Sergey A. (2017) Gold- and Silver-Rich Massive Sulfides from the Semenov-2 Hydrothermal Field, 13°31.13′N, Mid-Atlantic Ridge: A Case of Magmatic Contribution?. Economic Geology, 112 (4) 741-773 doi:10.2113/econgeo.112.4.741 | Journal (article/letter/editorial) | | Studi di Padova, Via Gradenigo 6, 35131 Padova, Italy Marine Geosurvey Expedition, Pobedy st. 24, Lomonosov–St...proportion of visible gold is associated with abundant opal-A, which precipitated after a first generation of...were found in earlier sulfides. Fluid inclusions in opal-A associated with native gold indicate precipitation...in the sulfides and in aragonite associated with opal-A; invisible silver was detected in all sulfides...brecciated Cu-Zn massive sulfides with abundant opal (locally, up to 60 vol %; ~17 kg), small fragments |  | | Report (Issue volume) | | dominate the world Republic of Germany (FRG), Italy, Greece, economy. Viewed as one regional area,...fifth (France), sixth (United Kingdom) and seventh (Italy) largest economies of the world, all bordering on...of World Broadcasts (SWB). Nuova Samim, Rome, Italy: steel on a per-capita basis, than any other. Part...Bauxite duction Priтагу metal Copper Mine Refined Lead Mine Refined Market Economy Countries: European... Ireland 11,803 2,616 4,960 339 5,542 12,277 Italy Luxembourg Netherlands Portugal Spain United Kingdom |  | | Book (edition) | | Morocco; (center, left) wulfenite, San Francisco mine, Sonora, Mexico; (center) ameihyst, Veracruz, Mexico;...rnodochrosite, N’Chwaning mine, South Africa; (lower left, center) wulfenite, Red Cloud mine, Arizona; (lower...a he pie 21 levy te (> Fam 7 : ay — ‘ff ai rile 1) -l see eke4 | ase re KO 4! dat wi 6...Pe Wr * se vat © C6 tad GAa Snive Sr Certain Mine (ax agry wh Oe ee — SS 4 eae wid Bharce ©...POW ieiiere CNT ‘ Overt 110. ePeates eae =. Cs ai -) Og ae 6A ee Vere Te Sx . 2 = 2 a> |  | | Journal (issue) | | • CVD synthetic diamond • “Mermaid Crystal,” an opal simulant • Synthetic spinel with unusual inclusions...the recognition of sugar-acid treatment of porous opal, spectroscopic studies of diamonds and their origin...yellow diamond Treated yellow sapphires Black treated opal Pink diamond Cultured pearls with pink dye Treated...pink diamonds Maxixe blue beryl Gilson synthetic opal Yellow conch pearl Taaffeite Cubic zirconia Cultured...Addendum: Cat’s-eye OPAL In the Summer 2003 Lab Notes (p. 148), we reported on a chatoyant opal with an eye that |  | | Book | | to take a party of 50 or more through southern Italy and especially the Lipari islands Etna and Roccamonfina...Association, and an old travelling companion of mine in the Aeolian Islands, who had been of so much...met by carriages placed at our disposal by the Province of Terra di Lavoro, to convey us to the town...we mounted in carriages, again provided by the province, personally represented by Prof. It was fortunately...He drank to and as her volcanic fires were not Italy hoped that neither were those gifts which ; her | | | Book (edition) | | Morocco; (center, left) wulfen ite San Francisco mine, Sonora, Mexico; (center) amethyst, Veracruz, Mexico;...Mountains, Utah; (lower le ft) rhodochrosite, N'Chwaning mine, Sou th A frica; {lower left, center) wulfenite...opalescence Somewhat pearly luster such as sho,vn by some opal. opaque Property of being impervious to visible...coating fractures in sandstone at the Fuemrol No. 2 mine, Temple Mountain, Emery County, Utah; also sparsely...district, and at the Little Emma mine, Clear Creek County; at the Enterprise mine, Dolores County; at the Double |  | | Book | | Yosuosng 3 Y L } ojontouono wi so} Rear ¥,0200@ ai lop o0W i ws ¢ a! EO %O 1p 02819u14 101104%@...produced specimens from such places as the La Fé Mine in the state of Chiapas and Santa Rosalia in the...WIC ' ' (OSE INSET) Figure 3. The mineral province of Sierra Madre Occidental. (Modified from Berstein...Mexicali Show & Nensengdo Figure 4. The mineral province of Sonora. (Mod ors ified from Berstein, 1964...University of New York, Albany) Provinces / 5 The province of Sonora, located in the northwest corner of | | | Book | | produced specimens from such places as the La Fe Mine in the state of Chiapas and Santa Rosalia in the...CALl[NTCS ... I MI ( Figure 3. The mineral province of Sierra Madre Occidental. (Modified from Berstein...University of New York, Albany) Figure 4. The mineral province of Sonora. (Modified from Berstein, 1964, back...Ttcolote • S 0 R A Sor • Provinces I 5 The province of Sonora, located in the northwest corner of...4) is an extension of both the basin and range province, and the copper porphyry belt of the western United |  | | Journal (issue) | | hyst, Zoisit. Rohsteine: Geschliffene Edelsteine_: Opal, Amethyst, Tur• malin. Aquamarin, Rauchquarz, Citrin...MINERALIEN-MAGAZIN 1/83 lesen Sie: Mineralarten im Bild: Opal • Fossilien aus dei:n pfälzischen Rotliegenden •...nützlich Australien HoRIUCHI. N.: New Synthetic Opal Made of Plastics. T/re A 11s1rn /im1 Gem1110/ogis1...Gem1110/ogis1. Feb. 1982. GUPPY. D.: White ClilTs Opal. A11s1ralia11 Gem & Treas11re H11111er, April 1982. Frankreich...\V.: GRICE. D.: G rossular Gamet from the JelTrcy Mine. Asbestos, Quebec. Canada. The Jo1m1a/ oJGe111111ology |  | | Book (volume) | | Varieties: Lussatite; Opal, 280 Occurrence, 281 Historical, 283 Melanophlogite, 283 OPAL Mode of Aggregation...fine-grained varieties of quartz, together with opal, were known as distinct entities over 2000 years...identification of the so-called amorphous substance opal as a variety of cristobalite and the clarification...also are known from the northern Urals,® Carrara, Italy,” and They are quite unknown at many important... Occasional specimens of chalcedony, agate, and opal fluoresce a yellowish green to green, especially |
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