 | | Journal (issue) | | 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 |  | | 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) | | 3 341 EMERALD FROM HABACHTAL by E. J. GÜBELIN, Ph.D., C.G., F.G.A. T H E emerald deposit of Habachtal...Habachtal, in Austria, is discussed in some detail in this paper not only because it is the only source of...practically no authoritative literature on the deposit exists in the English language. 10» n T h e initial...relatively unknown but nevertheless very interesting deposit in the Habachtal area differed by any local characteristics... HISTORY T h e occurrence of emeralds in the Salzburg Alps was already known to the Romans who did not |  | | 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 |  | | Journal (issue) | | No. 3 / 2022 Emerald from Chitral, Pakistan Turquoise from Xinjiang, China Emerald Jewels from St...This emerald-bearing pectoral cross (12.5 × 5.8 cm) was donated to St Peter’s Archabbey in Salzburg, Austria...assumed the emeralds came from Austria’s Habachtal deposit, microscopic examination and portable EDXRF chemical...this issue. Courtesy of St Peter’s Archabbey, Salzburg; photo by N. Urban. 213 What’s New Yehuda Diamond... Gem Notes 234 Emerald from the Chitral Region, Pakistan: A New Deposit Emerald with BertranditePhlogopite |  | | Journal (article/letter/editorial) | | Richter Mit 6 Abbildungen Eingegangen am 31. Mai 1983; angenommen am 12. Dezember 1983 Zusammenfassung...Metarodingites of the Habach Formation, Hohe Tauern, Austria Geochemical and petrological investigations have...Formation within the Venediger massif, Hohe Tauern, Austria. The metarodingites consist of garnet, clinopyroxene...Beanspruchung k o m m t es zur Ausbiidung von Talkschiefer. Am sfldlichen Rand des TalkkOrpers der Leckbachscharte...der Schwarzen Wand noch weitere G~inge erwarten. Am Auf~enrand der Rodingitg~inge wurden metasomatische |  | | Book | | Marshall, Anthony E. Fallick and Yannick Branquet Emerald Deposits: A Review and Enhanced Classification Reprinted...review proposed an enhanced classification for emerald deposits based on the geological environment (magmatic...one of the images (inclusions hosted in Russian emerald) for the cover page of this Special Issue book...A.; Marshall, D.; Fallick, A.E.; Branquet, Y. Emerald Deposits: A Review and Enhanced Classification....Paris-Lodron-University of Salzburg, Hellbrunner Str. 34, A-5020 Salzburg, Austria; franz.neubauer@sbg.ac |  | | Book | | mainland Tanzania) and then progressing to Kenya - I am proud to say that the coloured gemstones of these...Tanzania: (clockwise, from middle left) green zoisite and red ruby corundum; orange-brown 'cat's eye'...the Neoproterozoic Metamorphic Mozambique Belt (see box on page 15). This geological entity hosts the...tourmaline{dravite),tremolite,tsavorite, wurtzite,zoisite. (cp': TANZANIA Palaeogene Neogenev_olcanicsa...S-sapphire D-diamond Sn-tin (cassiterite) E-emerald T -tourmaline Am- amethyst Mahenge sedimentary □ pl |  | | Journal (issue) | | known for its production of the gem variety of zoisite, tanzunite, which occurs in the Merelani Hills...of articles on all aspects of the field. Please see the Suggestions for Authors in the Winter 1991 issue...n e w gem materials such as transparent green zoisite have appeared on the market, and there is increasing...Bridges, Jo Bon Cote, Patricia Gray, Dr. A. J. A @am) Janse. Jon(%&ton, HoSy Kane, Or, P. KeOar, Cheiyl...extent: diamond, ruby, sapphire, purplish blue zoisite (tanzanite; figure l), and green grossular [tsavorite)and |  | | Journal (issue) | | the majority of readers who will not be able to see the specimens but who may be faced with the difficult...Some parts resemble 'spinach' nephrite j a d e (see photograph) b u t the head of the bird (mottled white... medium green and dark brown. It will be noted (see the ' S u m m a r y of Determinative Work' on p....23044 (X6830) : major zoisite, clino-enstatite (X6829) : major diopside, zoisite, minor chlorite Buff...White/greenish area (X6809) : Ca-rich plagioclase, major zoisite. Brownish area (X6808) : major Ca-rich plagioclase |  | | Journal (article/letter/editorial) | | the notable exception. KEYWORDS : gems, diamond, emerald, sapphire, ruby, geochemistry, exploration INTRODUCTION...sapphire (any other color of gem corundum), and emerald (green chromium/ vanadium-bearing gem beryl, Be3Al2Si6O18)...ruby or vanadium in tanzanite (violetish blue gem zoisite, Ca 2Al3Si3O12OH) and tsavorite (green gem grossular...requirement for a major element and a chromophore is emerald. Beryl is a relatively rare mineral because there...form emerald (e.g. Ottaway et al. 1994; Cheilletz and Giuliani 1996; Branquet et al. 1999; SEE FIG. 1) |  | | 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 |  | | Book | | undertake the task of abridging my much larger book, Emerald and Other Beryls (Chilton Book Co, 1981) to provide...literature, Mr Read’s task was far from simple and I am most grateful for his discriminating selection of...xiii Chapter 1 Emerald and beryl in antiquity 1 Emerald in ancient Egypt 1 Emerald and beryl in ancient...10 Large European emerald objects 13 The Emerald Buddha 14 The Budha’s tooth emerald 15 Hernando Contez...use of beryls in the Americas 15 Chapter 2 Emerald and beryl in medieval and modern Europe 18 Biblical |  | | Book | | undertake the task of abridging my much larger book, Emerald and Other Beryls (Chilton Book Co, 1981) to provide...literature, Mr Read's task was far from simple and I am most grateful for his discriminating selection of...Chapter 1 Emerald and beryl in antiquity xiii 1 Emerald in ancient Egypt 1 Emerald and beryl in...Pliny's Natural History 10 Large European emerald objects 13 The Emerald Buddha 14 The Budha's tooth emeraid...use of beryls in the Americas 15 Chapter 2 Emerald and beryl in medieval and ~odern Europe 18 Biblical |  | Giuliani, Gaston, Dubessy, Jean, Ohnenstetter, Daniel, Banks, David, Branquet, Yannick, Feneyrol, Julien, Fallick, Anthony E., Martelat, Jean-Emmanuel (2018) The role of evaporites in the formation of gems during metamorphism of carbonate platforms: a review. Mineralium Deposita, 53 (1) 1-20 doi:10.1007/s00126-017-0738-4 | Journal (article/letter/editorial) | | or sulphurous fluids (ruby, garnet tsavorite, zoisite tanzanite and lapis-lazuli) or molten salts formed...form gem minerals. Keywords Gems . Emerald . Ruby . Garnet . Zoisite . Lapis-lazuli . Metamorphism . Carbonate...vanadium-rich grossular, i.e. tsavorite, and vanadium-rich zoisite, called tanzanite, from Tanzania, Kenya and Madagascar...Colombian emerald deposits Located in the Eastern Cordillera basin, the Colombian emerald deposits define...Coscuez, La Pita and Peñas Blancas (Fig. 2a). Emerald mineralisation is hosted in the Lower Cretaceous |  | | Journal (issue) | | FEATURE ARTICLES 464 Geology of Corundum and Emerald Gem Deposits: A Review Gaston Giuliani and Lee...of the geology and genesis of gem corundum and emerald deposits. p. 569 512 A Review of Analytical... 637 614 Geographic Origin Determination of Emerald Sudarat Saeseaw, Nathan D. Renfro, Aaron C. Palke...of articles on all aspects of the field. Please see the Author Guidelines at gia.edu/gemsgemology or...we know and do from our perspective. As one can see, this still results in a very large edition of G&G |  | | Journal (article/letter/editorial) | | spinel, ruby, sapphire, padparaja, tanzanite, zoisite, topaz, tsavorite, and zircon). Silica and beryl...and won for a profit (agate, amethyst, citrine, emerald, quartz, rose quartz, smoky quartz, morganite,...the periglacial/glacial and the high-altitude/mountain zones, where mechanical weathering and the paleogradients...(industrial minerals), and diamond placers (gemstones) (see Section 3.8). Gemstones fulfill all physical requirements...“Chessboard classification scheme of mineral deposits” [1]—See Appendix A, so as to assist their assignment to the |  | | 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 (issue) | | Thailand Kamal Kothari, India Bryan E. Pavlik, Austria Emmanuel Piat, France Capt. Ramji Sharma, Japan...murdered by illegal miners in the Taita Taveta District in Tsavo National Park, Kenya. As the news spread...include nomenclature for lead-glass filled corundum, emerald clarity enhancement issues, Certification for Fair... Gemfields set emfields held its second rough emerald auction for undisclosed reserve prices for each...per carat AGTA Show The company indicated that emerald values decline dramatically as quality decreases |  | | Journal (issue) | | a search is made of all commercial equipments to see if there exists a product which either directly,...diamond sorter. OBSERVATIONS ON SOME RHODESIAN EMERALD OCCURRENCES By N. A. METSON, B.Sc., and A. M. TAYLOR...authors (A.M.T.) was fortunate to inspect the emerald occurrences near Fort Victoria, Rhodesia. This...guide to the area and for providing additional emerald samples for analysis. J. Gemm., 1977, XV, 8 ...investigation was to try and further our understanding of emerald formation in Nature by studying in particular the |  | | Journal (article/letter/editorial) | | the tourmaline supergroup, vesuvianite, zircon, zoisite. Non-gemmologists may question the appropriateness...Figure 1. Left: Non-gem andalusite, Praxmar, Tyrol, Austria, 10 × 8.5 × 8 cm. Collection of the École nationale...California, and Colombian emeralds (for whose genesis see Cheilletz et al. 1994; and Ottaway et al. 1994)....spodumene, ‘tanzanite’ a gem variety of the mineral zoisite, and so on, including an abundance of informal... discussed later, include contact metamorphic emerald deposits in which crystal growth was cushioned |  | | 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 |  | | Book | | ADOLFSSON, STIG G. Hrudeposit, Sweden 3:38-39 Notes on recent underground collecting...ALABAMA Iron phosphate mineral locality at Indian Mountain, Alabama (by H. Harwood) 5:241-244 Iron-manganese...18:65-74 Phosphate microminerals of the Indian Mountain area [Georgia and Alabama] (by J.B. Gordon, Jr...the Alpine ar,d Subalpine region [Switzerland,Austria and Iti:Jy](by C. M. Gramaccioli) 8:287-293 Minerals...10:85-89 Micromounting in the eastern Alps of Austria (by K. Kotal) 13:171-173 ALSTONITE An occurrence |  | | Journal (issue) | | birefringence, with particular reference to the synthetic emerald, was studied. Four small synthetic emeralds and..." l e a v e " the eyeview of the shadow edge to see the scale, for the strip indicator, even if somewhat...mechanical, being induced by the intense vibration—blue zoisite (tanzanite) being a prime example. In other cases...as a diamond substitute, golden grossular and emerald-green grossular. There are the rhododendron-red...colour grade rhodolite. T h e r e are the fine emerald-green chrome tourmalines from L a n d a n a i |  | | Journal (issue) | | your professionalism will be obvious for all to see For further information please contact Louise Macdougall...result of a several weeks stay at Matara, which gem district he visited in response to an urgent request for...Singhal.); Swedish like English. "Purple-coloured Mountain Crystal." Robals: rauwa, rawa; granater. "Small...palingu; hvit crystall "Transparent and colourless mountain Crystal". WhiteSaphires or WaterSaphires: willie...fragments and slivers of the most transparent white mountain Crystals". Taripo: "a milk-coloured quartz". Yellow |
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