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| Burmese Sapphire and Peridot from Mogok History of Emerald Mining at Habachtal, Part I New Regular Feature:...Peridot from Mogok and a History of Emerald Mining in Habachtal, Austria Duncan Pay FEATURE ARTICLES p....spectroscopic, and chemical features of peridot from this deposit, which possesses a rich olive green color and is...large sizes. 338 History of Emerald Mining in the Habachtal Deposit of Austria, Part I p. 347 Karl Schmetzer...region, which is regarded as one of the earliest emerald deposits. p. 373 REGULAR FEATURES 372 Lab Notes |
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| Yellow Topaz from Saxony, Germany History of Emerald Mining at Habachtal, Part II New Regular Feature:...No. 1 EDITORIAL 1 Yellow Topaz from Germany, Emerald Mining in Austria’s Habachtal Region, A Return...behavior. 18 History of Emerald Mining in the Habachtal Deposit of Austria, Part II Karl Schmetzer The...two-part series on the mining history of Austrian emerald deposits in the Habachtal region. p. 40 REGULAR...nickel impurities • Nail-head spicule in a Russian emerald • Dyed fluorite • Repaired grandidierite • New |
 | Giuliani, Gaston, Groat, Lee A., Marshall, Dan, Fallick, Anthony E., Branquet, Yannick (2019) Emerald Deposits: A Review and Enhanced Classification. Minerals, 9 (2) 105 doi:10.3390/min9020105 | Journal (article/letter/editorial) |
| minerals Review Emerald Deposits: A Review and Enhanced Classification Gaston Giuliani 1, *, Lee A....February 2019 Abstract: Although emerald deposits are relatively rare, they can be formed...systems and models currently used to describe emerald precipitation and predict its occurrence are too...mode of formation for some emerald deposits. Generally speaking, emerald is beryl with sufficient concentrations...crystals. The limiting factor in the formation of emerald is geological conditions resulting in an environment |
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| miners at work in the Diirrnberg-Hallein mine (1756) (see also comment on copyright page) Mineral Deposits...painting in the ancient mine office at Hallein Salzburg. The picture was painted in 1757 by Benedict Werkstiitter...the mine by the Prince Bishop Sigmund III. of Salzburg on 5th of May 1756 (bottom right, corner). At...heldatBled/Yugoslavia 3-7, 1977, held at Leoben/ Austria 5-10,1981, held at Berchtesgaden/Bavaria, FRG ...especially the relations between the formation of a deposit and "Alpine plate tectonics" even if their geotectonic |
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| i e r. c o m / l o c a t e / o r e g e o r ev Emerald deposits and occurrences: A review L.A. Groat a...Available online 22 April 2008 Keywords: Emerald deposits Emerald occurrences Crystal chemistry Geochemistry...isotopes Classification Exploration A B S T R A C T Emerald, the green gem variety of beryl, is the third most...emeralds. However there is speculation that the emerald mines in Colombia are becoming depleted. Brazil...of world emerald production. Emeralds have also been mined in Afghanistan, Australia, Austria, Bulgaria |
 | Aurisicchio, Carlo, Conte, Aida M., Medeghini, Laura, Ottolini, Luisa, De Vito, Caterina (2018) Major and trace element geochemistry of emerald from several deposits: Implications for genetic models and classification schemes. Ore Geology Reviews, 94. 351-366 doi:10.1016/j.oregeorev.2018.02.001 | Journal (article/letter/editorial) |
| Manuscript Major and trace element geochemistry of emerald from several deposits: Implications for genetic...Vito, Major and trace element geochemistry of emerald from several deposits: Implications for genetic...pertain. Major and trace element geochemistry of emerald from several deposits: Implications for genetic...report the chemical composition of representative emerald crystals from some of the most important worldwide...Analysis (PCA), were used to discriminate each deposit with high reliability. PCA of SiO2, Al2O3, V, Sc |
 | Giuliani, G., France-Lanord, C., Coget, P., Schwarz, D., Cheilletz, A., Branquet, Y., Giard, D., Martin-Izard, A., Alexandrov, P., Piat, D. H. (1998) Oxygen isotope systematics of emerald: relevance for its origin and geological significance. Mineralium Deposita, 33 (5) 513-519 doi:10.1007/s001260050166 | Journal (article/letter/editorial) |
| Alexandrov á D. H. Piat Oxygen isotope systematics of emerald: relevance for its origin and geological signi®cance...March 1998 Abstract Oxygen isotopic composition of emerald from 62 occurrences and deposits in the world reveals...d18O-values for each deposit are restricted and can be used to determine the origin of emerald from the world's...world's most important producers. The d18Ovalue of emerald appears to be a ®ngerprint of its origin, especially...quality from Colombia (eastern emerald zone, d18O +16.8 0.1&; western emerald zone, d18O +21.2 0.5&) |
 | | Report (issue) |
| our way through the compet itive minefield of emerald science, much of John's contribu tion to this...any other opinion. extraLapis English No. 2: Emerald The Most Valuable Beryl The Most Precious Gemstone...we • pay tribute to John Sinkankas to whom this emerald issue is dedicated. John Sinkankas wrote more...than 15 books including his 1981 definitive work Emerald and Other Beryls. He set standards for authors...them. We are grateful to him and hope that you will see his influence here in Emeralds of the World and in |
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| China Correspondence: yuxy@cugb.edu.cn Abstract: Emerald is among the most valuable gems in the world. Over...gemological and geological research. In this study, emerald samples from India were examined by UV-Vis-NIR...siderite and dolomite, platelets of phlogopite, and magnesite). Mineral inclusions in Indian emeralds typically...Cr, Sc, Cs, Rb, and Ga gradually increases in emerald with color band. Keywords: Indian emeralds; fluid...creativecommons.org/licenses/by/ 4.0/). 1. Introduction Emerald is the gem-grade green beryl, of which chemical |
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| 799–809, 2010 Cr-bearing tourmaline associated with emerald deposits from Swat, NW Pakistan: Genesis and its...the Main Mantle Thrust in the Swat Valley host emerald deposits and are invaded by quartz veins and stockworks...associated with emerald and/or chromian muscovite. Tourmalines from the Mingora and Gujar Kili emerald mines and...suggests that the tourmaline is cogenetic with emerald formation. The quality and quantity of Swat emeralds...hydrothermal fluids. Large deposits of gem-quality emerald occur in carbonate-altered ultramafic rocks, which |
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| characteristics and source of chromium and beryllium for emerald mineralization in the ophiolitic rocks of the Indus...2010 Available online 14 December 2010 Keywords: Emerald genesis Host petrography Geochemistry Mineralizing...Bodies of magnesite-rich rocks (magnesite ± talc ± quartz ± dolomite), locally containing emerald deposits...highly fissile magnesite-rich rocks to produce veins and stockworks of quartz as well as emerald, Cr-rich tourmaline...reveals that relative to non-mineralized sections, magnesite-rich rocks in mineralized zones show significant |
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| 1996 Abstract. Emerald deposits in Swat, northwestern Pakistan, occurring in talc-magnesite and quartz-magnesite...quartz-magnesite assemblages, have been investigated through stable isotope studies. Isotopic analyses were...and tourmaline (two samples) from the Mingora emerald mines. The oxygen isotopic composition (&180 SMOW)...n = 7). Each of the two components of water in emerald (channel and inclusion) has a different range of...7). The mean 6D of channel waters measured from emerald ( - 4 2 +_ 6.6~/oo SMOW) and that of fluid calculated |
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| formation conditions of fluid inclusions in emerald from the Maria deposit (Mozambique) YE. VAPNIK1,* AND I...compositions of fluid inclusions hosted in emerald and quartz (the Maria deposit, Mozambique) were studied using...microprobe techniques. The fluid inclusions in the emerald contain fluids within the Na-Ca-Mg-(HCO3) -(CO3)2...are 25 and 5 wt.%, respectively. Mg-calcite, magnesite, calcite and aragonite are also identified as...distinctive of the Maria emerald deposit. The likely conditions of emerald growth are 400 < T < 5008C |
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| and greisens, (6) calcareous metasediments and magnesite rocks, (7) metamorphosed sandstones and conglomerates...Brodtkorb (2009) 6) Calcareous metasediments and magnesite rocks Donnay et al. (1967), Otroshchenko et al...existence of the disparate fluortourmaline species (see Table 1). Tourmaline can be classified into groups...Within the restriction of the dominant-valency rule (see above), the dominant anion of the dominant valency...included information on tourmaline related to emerald mineralization and greisen-style metasomatism of |
 | | Report (volume) |
| Magnesite Deposits in the Serra das Eguas, Brumado Bahia, Brazil By ALFRED J. BODENLOS GEOLOGIC INVESTIGATIONS..._________________________________________ 88 Magnesite occurrences ___________ .:._________________________...________ 91 Discovery and development of the magnesite deposits of the Serra dasEguas_______________...and associated minerals____________________ 117 Magnesite textures and their relation to deposition_________________...the Pedra Preta magnesite deposit. 14. Geologic map of the Piraja magnesite deposit. 15. Geologic map |
 | | Journal (issue) |
| to 4 cm, on matrix, from Ghundao Hill, Mardan district, Pakistan. F. John Barlow collection; photo by...Another Mineral Video M ail-order shoppers who like to see what they’re ordering now hav< a new source. Readers...concise. This is a very pleasant, inexpensive way to see and perhaps bu some fine minerals during those house-bound...inch, $3.50” etc.) W ouldn’t it be interesting to see what thos specimens actually looked like? But even...even videos from ten or 20 yeai ago would be fun to see. In any case, I highly recommend th< collectors, |
 | | 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 |
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| statue at Vientiane’s Haw Phra Kaew (Temple of the Emerald Buddha); rough and faceted sapphires from Laos...America – Brazil and Colombia 48 Clinohumite – The Mountain Fire 52 GemTechLab – Filling the Communication...Kothari, India Brandon Ma, Thailand Bryan E. Pavlik, Austria Emmanuel Piat, France Capt. Ramji Sharma, Japan...magnificent and beautiful city of Rio de Janeiro. I am convinced that it will be a very successful Congress...Email: emeralds@singhalgems.com 8/7/09 10:07:18 AM INDUSTRY NE WS CIBJO Creates CSR Working Group |
 | | Book |
| mine, known for Yeryfine, rare, pink diamonds. Emerald, alexandrite, garnet, and tourmaline are all significantly...tanzanite and the lusciously nch greener-than-emerald tsavorite. Unique geochemistry in the area holds...Tsavo West National Park, Kenya 44 Chapter 4. Emerald and Alexandrite from Tanzania 49 Location 50 History...Garnets of East Africa 73 Rh.odolite of the Lindi District, Tanzania 76 Tsavorite Garnets 76 The Pyrope-...Tanzania 96 Red Dravite Tourmaline from the Narok District, Kenya 99 Uvite-Dravite Chrome Tourmaline 99 |
 | | Journal (issue) |
| Synthetic Ruby and Sapphire Cover photo: A new emerald deposit was discovered in 2021 in the Chitral region...description of pale-coloured emerald that was initially mined there (see The Journal, Vol. 38, No. 3,...Afghanistan and elsewhere in Pakistan. The Chitral emerald specimen shown here measures 12.5 cm tall. Photo...Shaokui Pan Comparison of Emeralds from the Chitral District, Pakistan, with other Pakistani and Afghan Emeralds...to advertising@gem-a.com. For more information, see https://gem-a.com/component/ edocman/media-kit. |
 | | 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 |
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| 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) |
 | | Journal (article/letter/editorial) |
| from the text by simply using the code of each deposit in the chart. This code can be created by combining...haralddill@web.de. URL: http://www.hgeodill.de. 0012-8252/$ – see front matter © 2009 Elsevier B.V. All rights reserved... . . . . 3.4. Metamorphic chromium (gemstone) deposit . . . . . . . . . . . 3.5. Chromium supply and... . . . . . . . . 11.3. Structure-bound copper deposit . . . . . . . . . . . . . . . . . . . . . . . ...the only inexhaustible low-grade, large-tonnage deposit on earth? The first step has already been taken |
| | Journal (article/letter/editorial) |
| from the text by simply using the code of each deposit in the chart. This code can be created by combining...haralddill@web.de. URL: http://www.hgeodill.de. 0012-8252/$ – see front matter © 2009 Elsevier B.V. All rights reserved... . . . . 3.4. Metamorphic chromium (gemstone) deposit . . . . . . . . . . . 3.5. Chromium supply and... . . . . . . . . 11.3. Structure-bound copper deposit . . . . . . . . . . . . . . . . . . . . . . . ...the only inexhaustible low-grade, large-tonnage deposit on earth? The first step has already been taken |
 | | Report (issue) |
| aquamarine); 19.6 cm high Shigar Valley, Skardu district, Northern Areas, Pakistan P hoto by Jeff Scovil...Beryl (variety Morganite) ·, Stak Nala, Skardu district, Northern Areas, Pakistan 4.6 cm wide; Collection....................................Page 80 Zagi Mountain: A Paradise for Rare-Earth Element Mineral Collectors...in Idar to arrange a flight to Kabul. Generally, I am cooler to mineralogical stimuli-the consummate professional-but...extreme contrasts in which one was as likely to see a new Mercedes-Benz as a caravan of 100 or more camels |
