 | | Journal (article/letter/editorial) | | 0003-004X/14/0506–999$05.00/DOI: http://dx.doi.org/10.2138/am.2014.4675 999 time in the history of the Solar...of minerals containing essential beryllium. (a) Emerald in mica schist matrix from the Murchison greenstone... Be2AlO4. Twinned crystals from the Ratnapura district, Sri Lanka. Photograph of sample R100130 reproduced...1981; Meyer 1981, 1985; Rundkvist 1982; Stowe 1994; see also Krivovichev 2013 for a history of mineral evolution)...hingganite-(Nd). Hawthorne (2002) suggested that yttrian milarite approaching the end-member K(CaY)Be3Si12O30 in |  | | Journal (article/letter/editorial) | | Blackwall Sequences in the Habachtal Emerald Deposit, ttohe Tauern, Austria Part 1 : Presentation of Geochemical...accepted May 27, 1981 Summary The Habachtal emerald deposit, Hohe Tauern, is composed of blackwall sequences...to the classical work of Fersmann (1929), the emerald deposits of the Tokowoja area (Ural mountains,...phenakite, partly depleted in K, Biotite schists with emerald, alexandrite, phenakite, margarite, and tourmaline...Talc schist, Serpentinite. In the Habachtal emerald deposit (Tauern window) - the only notable source of |  | | Journal (article/letter/editorial) | | VIGEZZITE AND ASSOCIATED OXIDES OF Nb–Ta FROM EMERALD-BEARING PEGMATITES OF THE VIGEZZO VALLEY, WESTERN...occurred during the albitization process of three emerald-bearing pegmatites that cut serpentinites at Mount...by fersmite. Chromium-bearing beryl crystals (emerald) occur along the exocontacts characterized by a...Keywords: albitized pegmatites, vigezzite, fersmite, emerald beryl, schorl–dravite, columbite, tantalite, Vigezzo...minerals and crystals of green, Cr-rich beryl (emerald). Furthermore, two new minerals, roggianite (Passaglia |  | | Journal (article/letter/editorial) | | pp. 1835-1849 Emerald Mineralization during RegionalMetamorphism'The Habachtal (Austria)and Leydsdorp(Transvaal...ultrabasicrocks.Detailed studiesof the I-Iabachtal(Austria)and Leydsdorp(South Africa) emeralddepositsindicatethat...well-knownschist-hosted emeralddepositsof the Habachtal (Austria) and of Leydsdorp (Transvaal, SouthAfrica) have...0361-0128/89/997/1835-15$3.00 p.96) on the famousTakowaja emerald depositsin the Ural Mountains(USSR):"It is now...MORTEANI Petrologicand geochemicalstudiesof the emerald interlayeredserpentiniteswhichis calledthe Habach |  | | Journal (article/letter/editorial) | | geologic record is 3000 million years for beryl and emerald (Figs. 1, 2), over 1500 million years a er forma...hingganite-(Nd). Hawthorne (2002) suggested that y rian milarite approaching the endmember K(CaY)Be3Si12O30 in...dis nct mineral. Group assignment is Figure 2. Emerald in mica schist matrix from Murchison greenstone...noted that the succession of minerals in a given deposit repeated the succession overall on the planet....ened tabular hexagonal crystal from Ratnapura District, Sri Lanka. Photograph of sample R090019 reproduced |  | | Journal (issue) | | geologic record is 3000 million years for beryl and emerald (Figs. 1, 2), over 1500 million years a er forma...hingganite-(Nd). Hawthorne (2002) suggested that y rian milarite approaching the endmember K(CaY)Be3Si12O30 in...dis nct mineral. Group assignment is Figure 2. Emerald in mica schist matrix from Murchison greenstone...noted that the succession of minerals in a given deposit repeated the succession overall on the planet....ened tabular hexagonal crystal from Ratnapura District, Sri Lanka. Photograph of sample R090019 reproduced |  | | Book | | a few such specimens have been found after 1960 (see the Amity-Edenville entry for Edenite and Spine!)...Mount Malosa, Chilwa alkaline province, Zomba district. "Illite" is the name of a series of incompletely...to 2 cm which are pseudomorphs after bastnasite--see photo in Guastoni, Pezzotta and Zorzi (2008). ILMENITE...euhedral, pale tan to white rnicrocline crystals-see photos in Dupuis and David (2013). ffighway 5 extension...molybdenite specimens showing crystals to 6 cm (see this entry for Molybdenite), and in a second roadcut |  | | Book (edition) | | Zarshouran Au-As deposit, Takab region, Iran Grandviewite, 5 111111, Capillitas deposit, Argentina Calciopetersite...supergroup (Henry et al., AM 96, 895-913, 2011), amphibole supergroup (Hawthorne et al., AM 97, 2031-2048, 2012)...25, 85-90, 2013), garnet supergroup (Grew et al., AM 98, 785-811, 2013) and dumortierite supergroup (Pieczka...crystals x,xx Rep. prov. pref. co. dept. dept. AJM AM CCM CM DANR EJM JMPS MM MP NJMA ZRMO Republic province...munic. St. Ste. Is. Mt. district municipio Saint Sainte island mount, mountain Mts. R. Penin. Vole. Plat |  | | Book (edition) | | amphibole group). For more detailed information see "Dana's System of Mineralogy•· ( 1944, I 951, 1962)...dept. (departement), dept. (departamento), dist. (district). Less common terms are not abbreviated, e.g....abbreviations used are as follows: Mt. (mount or mountain), Mts. (mountains), R. (river), Is. (island),...other mineral mixtures, more detailed information see page 7 * valid mineral species in our opinion which...Structural Crystallography and Crystal Chemistry AM - American Mineralogist AMG - Ark.iv Mineralogi och |  | | Journal (article/letter/editorial) | | Raade, G. (1966): A new Norwegian occurrence of milarite. Norsk Geologisk Tidsskrift 46, 122-123. Raade...65-68. Nordrum, F.S. & Raade, G. (2006): The emerald deposit at Byrud, Eidsvoll, South Norway. Norsk Bergverksmuseum...G. (2011): Uric acid dihydrate: occurrences in Austria and Norway. Norsk Bergverksmuseum, Skrift 46, 25-29...(Be,□)(V 3+,Ti)3O6, a new mineral from the Byrud emerald mine, South Norway. Mineralogical Magazine 79,...oxyborate mineral from the Kitteln mine, Nordmark ore district, Värmland, Sweden: description and crystal structure |  | | Book (edition) | | away beforc wc could finish this collaboration. I am pleased to have been able to finish lhis Glossary...Pierre-Jacques Chiappero (France). G. Daxner (Austria). M. Dcliens (Belgium). Giancarlo Delia Ventura... Keams (USA). Elisabeth Kirchner (Austria), Uwe Kolitsch (Austria). Werner Krause (Gennany). Andre Lalonde...Lalonde (Canada), P. Leblhuber (Austria), Andrew Locock (Canada). J.A. Mandarino (deceased) (Canada),...Filippo Olmi (deccased) (ltaly). Werner H. Paar (Austria). Gian Carlo Parodi (France). Marco Pa ero (ltaly) |  | | Book | | EMERALD and OTHER BERYLS by JOHN SINKANKAS This is Beryls jewelers, gists, geologists, earth ...sciences, yet eminently facet and widely a Emerald historians, gemological Sinkankas, the permanent...metal beryllium. with Beginning author traces emerald—from its less ite, role of history’s pendix...Unmatched third is knowledge from author one emerald cutting and of exotic composition, physical...mineralogical once events. languages for beryl emerald logical to and part, Sinkankas explores and |  | | Journal (issue) | | North-West Branch: 1. Knight, F.G.A. South Yorkshire & District Branch: J. I. Platts, F.G.A. Examiners: B. W....1983, XVIII, 6 Knischka are not only very easy to see but are also a highly characteristic internal hall-mark...structure and relation to jeremejevite and fluoborite. Am. Miner., 61, 88-94. 3. Povarennykh, A. S., Clark...in the mica group; the biotite-phlogopite series. Am. J. Sci., 244, 836-48. [Manuscript received 25th...in the centre of the southern part of the state (see Map). Geologically, it is a volcanic area in a region |  | | Journal (issue) | | issue 2, 2009 I Vladimir I. Zhemakov URAL EMERALD MINES (Izumrudnye Kopi): Notes on Mineralogy Mineralogical...LOCAUTIES SERIES Vladimir Ivanovich Zhernakov Ural Emerald Mines: Notes on Mineralogy. Mineralogical Almanac...current issue dwells on Mineralogy of Ural Emerald Mines: a deposit which Russain geologists and mineralogists...Front Cover Photo Emerald President. 13.6 x 9.0 x 7.7 cm, weight 1172 g. Mariinskoe deposit 1993. The State...found and produced for 180 years, is known as Emerald Mines (on Russian - /zumrudnye Kop1). This happened |  | | Journal (issue) | | from the C en ten n ia l Eureka m in e, T intic district, Juab C ounty, U ta h ..........................Mineral Show in the "David P. Wilber Reunion" case (see W hat's new in minerals, this issue). Photo by Jeffrey...traveling on the backs o f donkeys to isolated mountain communities. He later served in the Puebla legislature...search them out anyway, hoping to find that rare deposit which will yield som ething more than ju st another...end o f the Wallapai Mining District. The major mining centers of the district included Cerbat, Chloride |  | | Journal (issue) | | Cover Picture Watch set in a crystal of Colombian emerald found during excavations in Cheapside in the City...The crystal measures 42mm deep and 20mm across (see T h e Cheapside Hoard confusion', page 395) Photo:...gems and watches (see Figures 1-4), one of which is set in an emerald crystal (see also cover illustration)...the cover) contain the typical spiky Colombian emerald inclusions with halite cubes, liquid and gas bubbles...of the watch. Fig. 1. Watch set in a Colombian emerald crystal. Photo: by courtesy of the Museum of London |  | | Journal (issue) | | or back issues to the Subscriptions Department (see above), or visit www.gia.edu. To obtain a Japanese...of articles on all aspects of the field. Please see the Guidelines for Authors in the Summer 2002 issue...& Gemology’s annual Most Valuable Article Award (see page 65–66). And he continues to work daily on Volume...GEMOLOGISTS By John I. Koivula Just because you don’t see it, doesn’t mean it isn’t there. Many areas in the...other various international gemological journals, to see how dependent gemology has become on these illustrations |  | | Report (issue) | | Discovery Stoppaniite Fabio Tamagnini Page 40 Emerald and Aquamarine in Canada Lee A. Groat Page 22...are widely used (see page 22). These include aquamarine, red beryl, morganite, emerald, goshenite, and...varieties emerald and aquamarine are surrounded by the ancient mysticism of birthstones. Emerald, aquamarine...smaragdus" referred to what would be known today as emerald; "beryllus" is the Latin term for beryl; "sea green...of emerald, the modern designations for the beryl varieties emerged much later than did "emerald" and |  | | Journal (issue) | | spectral colours due to interference on thin layers, f See 'Iridescent natural glass from Mexico', p.488. )...the third The actual, geologically important, deposit is country and indeed the first country in Africa...unusual gemstones, have been known to produce district of the Northern Rift Valley Province, and corundum...market through Murangering and Lokitaung villages (see since mid 1987. Hence the rough is available in map)...dashed area in the map, is located in the Turkana district of the Northern Rift Valley Province on the west |  | | Book | | prospectors by placer mining. It is found along the mountain ranges of the western states, including California...Australia at Kalgoorlie; in the Cripple Creek district, Teller Co., Colorado and in Calaveras Co., California...(Landsberg) in W. Germany. The most important economic deposit is at Almaden, Ciudad Real, Spain. In California...From Carn Brea. Cornwall 22 ETC hot-spring deposit at Steamboat Springs, Nevada. Large workable deposits...taken is Lolling, near Huttenberg, Carinthia, Austria; other localitiesarethe Harz Mountains, Saxony |  | | Journal (issue) | | Khabine, near Gwebin, in Burma's Mogok Stone Tract. (See Burmese sapphire giants, p. 551) Photo by UKhinMg...do so in the direction of the soft mantle tissue (see Figure 3a). As a result of continuous multiplication...forming a kind of bag the so-called 'pearl bag', (see Figure 3b). Following nature's tendency to favour...which in biological terms is called a 'blastula' (see Figure 3c). The pearl itself consists of exactly...reported also by Kim et al., 1986; Noh et al., 1993; see also Park et al., 1974. Gemmological properties |  | | Journal (issue) | | more likely to go wherever they must in order to see important new museum displays. Also, major mineral...Art & Gems Carl & Naom i Bird Wirewrapping China Mountain Turquoise Co Collector's Edge Collector's Stope... Mineral Exploration Services Morgan Trinkets Mountain Minerals International Mt. Royal Gems ND - Gems...XTAL—Dennis Beals Zeolites India—Dr. Jay Zaveri See us also in * Las Vegas at the Tropicana, June 2-4...W est side of Hwy. 62 W endy & Frank M elanson L ’Am able, Ontario K0L2L0 Tel: (613) 332-1032 • FAX: (613) |  | | Book (edition) | | materials described. I, as editor and major contributor, am ultimately responsible for those omissions and inaccuracies...This book is not intended to be a bench manual; see references in many places below to The Identification...what I am about to recommend, monographs by their nature cannot be so up-to-date; the ones I am using...authorities and cited full details in the text; I am grateful to my very large personal library for virtually...didactic and flowery style to suit modern standards. I am strengthened in this decision by the welcome appearance |  | | Journal (issue) | | Neto, and Jan Kanis Polished emeralds from this deposit in northeastern Brazil, discovered in 2006, typically...irradiation. OVERVIEW AND UPDATE pg. 42 73 Brazil’s Emerald Industry Andy Lucas REGULAR FEATURES 31 45 47...synthetic • Diamond with unusual color zoning • Large emerald with gota de aceite structure • Artificial metallic...Azurite in granitic rock from Pakistan • Cat’s-eye emerald from Belmont, Brazil • Meteorite watches • Purple...Montana • Black cassiterite • Diopside from Kenya • Emerald mining in Mingora, Pakistan • Dark yellowish green |  | | Journal (issue) | | Abstracts | Jewelry Development Impact Index Report on Emerald Mining in Colombia and Zambia | MSA Centennial...from Brazil | Dark Blue Beryl from Pakistan | Emerald from Nunavut, Canada | Mesolite Cabochons from...to advertising@gem-a.com. For more information, see https://gem-a.com/news-publications/media-pack-2019...THE JOURNAL JOINS THE PRESTIGIOUS SCIE DATABASE I am very pleased to announce that The Journal of Gemmology...while reviewing articles submitted for publication. I am also grateful to our authors for sharing their research |
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