 | | Journal (issue) | | 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 |  | | Journal (issue) | | 3 341 EMERALD FROM HABACHTAL by E. J. GĆBELIN, 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. 10Ā» 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 |  | 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 |  | | Report (issue) | | our way through the competĀ itive minefield of emerald science, much of John's contribuĀ tion to this...any other opinion. extraLapis English No. 2: Emerald The Most Valuable Beryl The Most Precious Gemstone...we ā¢ 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 |  | | Journal (article/letter/editorial) | | VIGEZZITE AND ASSOCIATED OXIDES OF NbāTa 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...micaceous unit composed of phlogopite + talc + tremolite. Beryl crystals commonly show a green Cr-rich...Keywords: albitized pegmatites, vigezzite, fersmite, emerald beryl, schorlādravite, columbite, tantalite, Vigezzo |  | 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 Ć” D. H. Piat Oxygen isotope systematics of emerald: relevance for its origin and geological signiĀ®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 Ā®ngerprint of its origin, especially...quality from Colombia (eastern emerald zone, d18O Ā +16.8 Ā 0.1&; western emerald zone, d18O Ā +21.2 Ā 0.5&) |  | | Journal (article/letter/editorial) | | 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 Classiļ¬cation 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 |  | Baksheev, Ivan A., Trumbull, Robert B., Popov, Mikhail P., Erokhin, Yuri V., Kudryavtseva, Olesya E., Yapaskurt, Vasily O., Khiller, Vera V., Vovna, Galina M., Kiselev, Vladimir I. (2018) Chemical and boron isotopic composition of tourmaline from the Mariinsky emerald deposit, Central Urals, Russia. Mineralium Deposita, 53 (4) 565-583 doi:10.1007/s00126-017-0759-z | Journal (article/letter/editorial) | | composition of tourmaline from the Mariinsky emerald deposit, Central Urals, Russia Ivan A. Baksheev 1 &...Mariinsky schisthosted emerald deposit in the Central Urals, Russia, both in emerald-bearing phlogopite veins...in exploration of emerald-bearing and emerald-free veins in schist-hosted emerald deposits. The Ī“11B...dominated from the granitic rocks surrounding the emerald belt. The narrow range of B-isotope compositions...compositions in tourmaline from throughout the Mariinsky deposit suggests a well-mixed hydrothermal system. Editorial |  | Salvi, Stefano, Giuliani, Gaston, ANDRIANJAKAVAH, Prosper Rakatovao, Moine, Bernard, Beziat, Didier, Fallick, Anthony (2017) Fluid Inclusion and Stable Isotope Constraints On the Formation of the Ianapera Emerald Deposit, Southern Madagascar. The Canadian Mineralogist, 55 (4) 619-650 doi:10.3749/canmin.1700017 | Journal (article/letter/editorial) | | CONSTRAINTS ON THE FORMATION OF THE IANAPERA EMERALD DEPOSIT, SOUTHERN MADAGASCAR STEFANO SALVIĀ§ UniversiteĢ...Scotland, United Kingdom ABSTRACT The Ianapera emerald deposit is hosted in the Neoproterozoic Vohibory domain...peraluminous felsic intrusions outcrop in the area. Emerald occurs mostly within metasomatic phlogopitite and...recognized granitic pegmatites as the source of the emerald-forming fluids, leading to the classification of...chemistry of tourmaline and scapolite associated with emerald and beryl, data from fluid and solid inclusions |  | | 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 |  | Andrianjakavah, Prosper Rakotovao, Salvi, Stefano, BĆ©ziat, Didier, Rakotondrazafy, Michel, Giuliani, Gaston (2009) Proximal and distal styles of pegmatite-related metasomatic emerald mineralization at Ianapera, southern Madagascar. Mineralium Deposita, 44 (7) 817-835 doi:10.1007/s00126-009-0243-5 | Journal (article/letter/editorial) | | distal styles of pegmatite-related metasomatic emerald mineralization at Ianapera, southern Madagascar...Springer-Verlag 2009 Abstract The Ianapera emerald deposit is located in the Neoproterozoic Vohibory Block...within a few kilometers of the Ampanihy shear zone. Emerald mineralization is hosted by metasomatic phlogopite...Another characteristic feature to the Ianapera deposit and, to our knowledge, yet unreported, Editorial...permitting the formation of distal mineralization. Emerald composition was controlled by the chemistry of |  | | Journal (issue) | | No. 3 / 2022 Emerald from Chitral, Pakistan Turquoise from Xinjiang, China Emerald Jewels from St...This emerald-bearing pectoral cross (12.5 Ć 5.8 cm) was donated to St Peterās Archabbey in Salzburg, Austria...assumed the emeralds came from Austriaās Habachtal deposit, microscopic examination and portable EDXRF chemical...this issue. Courtesy of St Peterās Archabbey, Salzburg; photo by N. Urban. 213 Whatās New Yehuda Diamond... Gem Notes 234 Emerald from the Chitral Region, Pakistan: A New Deposit Emerald with BertranditePhlogopite |  | Marshall, D. D., Groat, L. A., Falck, H., Giuliani, G., Neufeld, H. (2004) THE LENED EMERALD PROSPECT, NORTHWEST TERRITORIES, CANADA: INSIGHTS FROM FLUID INCLUSIONS AND STABLE ISOTOPES, WITH IMPLICATONS FOR NORTHERN CORDILLERAN EMERALD. The Canadian Mineralogist, 42 (5) 1523-1539 doi:10.2113/gscanmin.42.5.1523 | Journal (article/letter/editorial) | | Mineralogist Vol. 42, pp. 1523-1539 (2004) THE LENED EMERALD PROSPECT, NORTHWEST TERRITORIES, CANADA: INSIGHTS...ISOTOPES, WITH IMPLICATONS FOR NORTHERN CORDILLERAN EMERALD DANIEL D. MARSHALLĀ§ Department of Earth Sciences...Columbia V6T 1Z4, Canada ABSTRACT Vanadium-rich emerald at the Lened occurrence, Northwest Territories...within a fractured garnetādiopside skarn. The emerald is generally found in quartzācarbonate veins with...distinct fluids, a CO2-bearing fluid related to emerald precipitation and a brine limited to subsequent |  | | Journal (article/letter/editorial) | | limestone quarries of Canaan, Litchfield Co., Conn., tremolite is found in large snowy-white masses ROCKS AND...make beautiful specimens. Beautiful though this tremolite may be, it is made up of extremely fine needlelike...Can anyone supply information on the occurrence? District oĆ ColumbiaāOn a recent visit to Washington, the...of graphic granite which comes from Bradbury's Mountain at Pownal, Cumberland Co. ; Opal (hyalite) colorless...quartzite have been collected in the Pilot Mountain district, Mineral Co., Nev. New HampshireāA nice specimen |  | | Journal (article/letter/editorial) | | bright green tremolite (0.40 wt.% Cr2O3), quartz, phlogopite, and fluorapatite in talc ā tremolite ā cummingtonite...5 mm) dark green crystals in quartz, tremolite or along tremolite cleavages and contacts. The assemblage...assemblage Al-rich chromium-dravite + tremolite + quartz Ā± phlogopite Ā± talc Ā± fluorapatite probably formed...from the chromite deposits of Nausahi, Keonjhar District, Orissa, India (proposal approved, IMA#2009ā088)...Al-rich chromium-dravite in marble-hosted talc ā tremolite ā cummingtonite schists from the #1 mine (American |  | | Journal (article/letter/editorial) | | one of the worldās major emerald-producing countries. In this study, emerald samples from Kamakanga, Zambia...schorl. Other mineral inclusions are fluorapatite, tremolite, and calcite. All Kamakanga emeralds contain at...creativecommons.org/licenses/by/ 4.0/). 1. Introduction Emerald is a variety of beryl whose ideal formula is Be3...[4], but it is difficult to distinguish Zambian emerald from others with the naked eye, just by color....earned $21.5 million, including a 6100 carat rough emerald. Consequently, Zambian emeralds have great promising |  | | Journal (article/letter/editorial) | | resemble common pelitic rocks, their chemistry (see below) changes dramatically across the shear zones...biotitite, garnetbearing Zentralgneis and coarse, tremolite-bearing serpentinites. SERPENTINITES AND BLACKWALL...carbonate. Tremolite appears in the easternmost Pļ¬tsch region and wider rims of tremolite Ā± talc Ā± phlogopite...metamorphic olivine and clinopyroxene, in addition to tremolite, chlorite, serpentine, dolomite and magnetite...this serpentinite body are dominated by talc Ā± tremolite, but the interior is largely composed of serpentine |  | | Journal (article/letter/editorial) | | The Netherlands GEOLOGICAL SETTING OF ZAMBIAN EMERALD DEPOSITS A.S. SLIWA and C.A. NGULUWE Zimco Limited...setting of Zambian emerald deposits. Precambrian Res., 25 : 213--228. The Kafubu emerald deposits occur within...persistent bands of talc--chlorite--amphibole (tremolite/actinolite) - magnetite schist, which are intruded...sometimes within the quartz--tourmaline veins. The emerald fields are considered comparable in quantity and...South Africa and Zimbabwe. INTRODUCTION The emerald deposits o f Zambia are located immediately southwest |  | | Journal (issue) | | Special Emerald 2018 ā Issue 40 All About Colored Gemstones World Emerald Update Highlights of the...the Second World Emerald Symposium, BogotĆ” International Gemstone Association AColored Publication of the...Issue 40 ā« ×ā¬InColor 1 2 InColor ā« ×ā¬Special Emerald 2018 InColorMagazine.com; Gemstone.org International... Contents In Side 5 Special World Emerald Update Editorās Note World Emerald Challenge: Origins and Appellation...Appellation 16 The Second World Emerald Symposium in Colombia The Second World Emerald Symposium Focuses on Responsible |  | | Journal (issue) | | statue at Vientianeās Haw Phra Kaew (Temple of the Emerald Buddha); rough and faceted sapphires from Laos...America ā Brazil and Colombia 48 Clinohumite ā The Mountain Fire 52 GemTechLab ā 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 | | undertake the task of abridging my much larger book, Emerald and Other Beryls (Chilton Book Co, 1981) to provide...literature, Mr Readās 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 Budhaās 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 |  | | Report (issue) | | aquamarine); 19.6 cm high Shigar Valley, Skardu district, Northern Areas, Pakistan P hoto by Jeff Scovil...Beryl (variety Morganite) Ā·, 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) | | 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...is monomineralic consisting almost entirely of tremolite, whereas the poor-quality nephrite is polymineralic |  | | Journal (issue) | | exhibition on the ground floor of the Geological Museum (see front cover illustration). These two displays together...a flat surface of the largest table cut stone to see if any individual grains had 133 J. Gemm., 1990...sequence of high-grade geological setting of the deposit is briefly described and metamorphic rocks consisting...thesapphirsapphirine nockites, quartzites and other metasediments (see ine are reported. The similarities between sapphirine...Association XX /\ 'X' Sapphirine Sapphirine deposit deposit ISSN: 0022-1252 J. Gemm., 1990,22, 3 137 |
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