 | Abdel Gawad, Ahmed E., Ene, Antoaneta, Skublov, Sergey G., Gavrilchik, Alexandra K., Ali, Mohamed A., Ghoneim, Mohamed M., Nastavkin, Aleksey V. (2022) Trace Element Geochemistry and Genesis of Beryl from Wadi Nugrus, South Eastern Desert, Egypt. Minerals, 12 (2) 206 doi:10.3390/min12020206 | Journal (article/letter/editorial) | | Geochemistry and Genesis of Beryl from Wadi Nugrus, South Eastern Desert, Egypt Ahmed E. Abdel Gawad 1, * , Antoaneta...Geochemistry and Genesis of Beryl from Wadi Nugrus, South Eastern Desert, Egypt. Minerals 2022, 12, 206. https://doi...Materials Authority, P.O. Box 530, El-Maadi, Cairo, Egypt; dr_mohamed1966@yahoo.com (M.A.A.); moh.gho@mail...occurs in the ancient Roman mines at Wadi Nugrus, South Eastern Desert of Egypt. It ranges from small crystals...The emerald of Wadi Nugrus has similarities with the geological setting of the Canadian emeralds. Emeralds |  | | 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 Classification Exploration A B S T R A C T Emerald, the green gem variety of beryl, is the third most...year) of the world's emeralds. However there is speculation that the emerald mines in Colombia are becoming...accounts for approximately 10% of world emerald production. Emeralds have also been mined in Afghanistan |  | 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 |  | | Journal (issue) | | / 2022 Spinel from Tajikistan Cleopatra’s Emerald Mines DaylightFluorescent Hyalite from Namibia Gahnite...Lomthong and Theodore Rozet 156 Cleopatra’s Emerald Mines: The Marketing of a Myth By Jack M. Ogden 114...Slovakia | Afghan Emerald with Gota de Aceite Phenomenon | Zircon Inclusions in Emeralds from Lake Manyara...Melee-Sized Colourless HPHT-Grown Synthetic Diamond with Red Fluorescence | Manufactured Silica Glass Sold as...identification and analysis, infrared spectroscopy of emeralds, spinel colouration, topaz, tourmaline and more |  | 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...ternary diagrams contributed to discriminate among emerald crystals from various deposits, which are included |  | | Journal (article/letter/editorial) | | extensiveoperationsat th.eSinai peninsulaturquoise mines with no other than stone tools until about 2',000...extensiveand the output large. The stelesfound at the mines give many touchesof mining life, startinglymodernto...BLOODSTONE. Babylonian. 0.,oooB.c.-•,8oo B.c. EMERALD. Egyptian: also Babylonian, x,?So-x,0.o3:Siberia...between White and Blue Nile. x,78o-•,2o3 B.c. MAGNESITE. Babylonian. x,6oo-x,4oo B.c. SARD. Myeenean:...(480-300 B.c.): Saite or GraecoRoman period in Egypt (603 B.c. or later.) 600-0.75 B.c. RUBY. Etruscan: |  | | Journal (article/letter/editorial) | | 180/ 60 isotopic card of natural and synthetic emeralds: geological and archeological implications G....France C. France-Lanord M. Chaussidon Natural emerald, the chromium-vanadium-rich variety of beryl, is...which concerns most of the deposits in the world. Emerald is hosted either by phlogopite schists or by plagioclasites...Goi~,s and Itaberai, the emerald mines of Djebels Sikait and Zabara in Egypt, Afghanistani and Pakistani...(Swat-Mingora) deposits, the emerald occurrence of Habachtal in Austria and the Colombian emerald deposits. Synthetic |  | | Journal (issue) | | Burmese Sapphire and Peridot from Mogok History of Emerald Mining at Habachtal, Part I New Regular Feature:...Sapphire and Peridot from Mogok and a History of Emerald Mining in Habachtal, Austria Duncan Pay FEATURE...is available in large sizes. 338 History of Emerald Mining in the Habachtal Deposit of Austria, Part...region, which is regarded as one of the earliest emerald deposits. p. 373 REGULAR FEATURES 372 Lab Notes...of antique Mughal spectacles with diamond and emerald lenses • Pink euclase • Vaterite on strand of freshwater |  | | Journal (article/letter/editorial) | | Inclusion and Chemical Composition Characteristics of Emeralds from Rajasthan Area, India Li-Jie Qin 1 , Xiao-Yan...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...multi-phase inclusions are first reported in Indian emeralds, containing gas bubbles (CO2 or CO2 + CH4 ), water...platelets of phlogopite, and magnesite). Mineral inclusions in Indian emeralds typically included phlogopite |  | | Journal (issue) | | 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...Considerable thanks are due to M r Cyril Gurr of the Mines Department, Fort Victoria, for his valuable assistance...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 (issue) | | OF AMERICA Characteristics of D-to-Z Diamonds Emeralds from Swat Valley, Pakistan History of European...EDITORIAL 317 Colorless to Near-Colorless Diamonds, Emeralds from Pakistan, a History of European Royal Jewel...Inclusion and Trace Element Characteristics of Emeralds from Swat Valley, Pakistan Hongshu Guo, Xiaoyan...spectroscopic characteristics, and chemical composition of emeralds from this important source. 356 A History of...fluorescence • Colorchange cat’s-eye diaspore • Emerald with large quartz inclusion • Large pearl discovered |  | | 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...and hope that you will see his influence here in Emeralds of the World and in future issues. Gloria & Gunther |  | | Journal (article/letter/editorial) | | characteristics and source of chromium and beryllium for emerald mineralization in the ophiolitic rocks of the Indus... Baton Rouge, LA 70803, USA Camborne School of Mines, The University of Exeter, Cornwall Campus, Penryn...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 |  | | 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...East Africa Elbaite Tourmaline from Tanzania 96 Red Dravite Tourmaline from the Narok District, Kenya...Mota) Mine, Tanzania, emerald. 51 Figure 4.2. Map of the Manyara (Maji Mato) emerald mine, Tanzania.52 Figure |  | | Report (edition) | | Department of Mines and Petroleum Mineral Resources Bulletin 25 by J Michael Fetherston, Susan M Stocklmayer... MINISTER FOR MINES AND PETROLEUM Hon. Norman Moore MLC DIRECTOR GENERAL, DEPARTMENT OF MINES AND PETROLEUM...Subjects: Precious stones — Western Australia Mines and mineral resources — Western Australia Other...available from: Information Centre Department of Mines and Petroleum 100 Plain Street EAST PERTH, WESTERN.............................................. 14 Mines and mineral deposits (MINEDEX) ................ |  | | Journal (article/letter/editorial) | | DEPOSITA ~) Springer-Vedag 1996 The genesis of emeralds and their host rocks from Swat, northwestern Pakistan:...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...were performed on a total of seven emeralds, associated quartz (seven samples), fuchsite (three samples)...from the Mingora emerald mines. The oxygen isotopic composition (&180 SMOW) of emeralds shows a strong |  | 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...the origin of emerald from the world's most important producers. The d18Ovalue of emerald appears to be...quality from Colombia (eastern emerald zone, d18O +16.8 0.1&; western emerald zone, d18O +21.2 0.5&)...5 0.5&). Furthermore, the 18O-composition of emerald appears to be a good marker of its geological environment |  | | Report (edition) | | available from: Information Centre Department of Mines and Petroleum 100 Plain Street East Perth WA 6004...dmp.wa.gov.au/GSWApublications Department of Mines and Petroleum Mineral Resources Bulletin 25 GEMSTONES...expanded to include additional occurrences of emerald, opal, agate, chalcedony, organic gems, tiger eye...FOR MINES AND PETROLEUM Hon. Sean K L’Estrange MLA ACTING DIRECTOR GENERAL, DEPARTMENT OF MINES AND...Subjects: Precious stones — Western Australia Mines and mineral resources — Western Australia Other |  | | Book | | tangled mass of fine, blackishgreen needles with shiny red grains between them. The freshly fractured surface...name to you. The green needles are hornblende, the red grains are nothing else but garnets, the same 'garnet'...found and smelted. Remains of Bronze Age copper mines can be found, for instance, in various parts of...choice of three colors: black, red and yellowish-brown. Two of these, red and yellowish-brown, were supplied...of one part of iron to two parts of sulphur, magnesite of one part magnesium to one part carbon to three |  | | 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 (article/letter/editorial) | | 799–809, 2010 Cr-bearing tourmaline associated with emerald deposits from Swat, NW Pakistan: Genesis and its...Rouge, Louisiana 70803, U.S.A. 3 Camborne School of Mines, The University of Exeter, Cornwall Campus, Penryn...the Main Mantle Thrust in the Swat Valley host emerald deposits and are invaded by quartz veins and stockworks...with emerald and/or chromian muscovite. Tourmalines from the Mingora and Gujar Kili emerald mines and...granitoids. Furthermore, the occurrence of Swat emeralds in quartz-tourmaline (±chromian muscovite) veins |  | | Journal (issue) | | The Coscuez Mine: A Major Source of Colombian Emeralds Ron Ringsmd The Elahera Gem Field in Central...one of the most productive, if little known, emerald mines in Colombia is the Coscuez mine. The 14.52-ct...saturated bluish green color that is characteristic of emeralds from this locality, which lies only 10 k m from...its history, geology, mining activities, and the emeralds found there. Photo C 1986 Harold el Erica Van...MINE: A MAJOR SOURCE OF COLOMBIAN EMERALDS By Ron Ringsrud The Muzo emerald district, i n Boyacd, Colombia |  | | Conference Proceedings | | Panjikar, Executive Secretary, India (center right, in red traditional sari). Then from left to right: Prof...in origin determination of ancient and medieval red garnet. 16:20 - 16:40 Karl Schmetzer, H. Albert...Recent challenges in identification of filled emeralds 17:20 – 17:40 Shang I (Edward) Liu, Kyaw Thu...Christophe, Pham Van Long: Trapiche texture in emeralds and rubies 9:20 – 9:40 Jarolsav Hyrsl : Genetic...in gemstones, with special emphasis on ruby and emerald. 15:00 – 15:20 Martine Philippe, Emmanuel Fritsch |  | | Journal (article/letter/editorial) | | MINES AND MINERALS OF AUSTRIA By P H I L I P M O R R I L L East Derry, N . H . 0 3 0 4 1 IV S A L Z...side of the Gross chen and Bramberg. T h e old emerald Venediger and Hohe Tauern form the Mine is about...down the Salzach played with even in midsummer. Emerald River, later is joined by a narrow gage X l s are...g;laciers and full of minerals. These in clude emeralds, aquamarine, possibly the valley is an outcrop...gold from this area but locality is lost. mines, copper mines and many others. Moar A i m , Habachtal. |  | | Report (issue) | | Chief Geologist i FRONT COVER PHOTO Twinned emerald crystal from North Carolina, photo from Smithsonian...have made them sound financial investments. The emerald, considered by many to be the most beautiful of...the largest emerald crystal in North America — 1,438 carats. The most expensive cut emerald also comes...North Carolina. This is the 15.14 carat Carolina Emerald owned by Tiffany f, Company of New York and valued...valued at $100,000. First thought to be emerald but later identified as a chromium spodumene, the mineral |
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