 | | Journal (article/letter/editorial) | | consistent with a sedimentary source origin. Type IA emerald REE patterns have upturns in the heavy REE (La/YbCC...occurring in Archaean host rocks. Modeling of type IA emerald compositions indicates that they form from magmatic...crustal protoliths. This geochemical signature links emerald formation with continental suture zones. Diamonds...that plate tectonic processes have led to emerald deposit formation since at least the Archaean. doi...that is responsible for the vivid green color of emerald [2]. Emeralds are scarce commodities requiring |  | 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 (article/letter/editorial) | | 1529-1541 (2006) THE EMERALD- AND SPODUMENE-BEARING QUARTZ VEINS OF THE RIST EMERALD MINE, HIDDENITE, NORTH...the paragenesis and mineral compositions of the emerald occurrence at the Rist mine, Hiddenite, North Carolina...and to examine the possible relationship between emerald and spodumene mineralization and granitic pegmatites...are calcite, amethystine quartz, spodumene and emerald. The early stage of vein development is characterized...with granitic pegmatite was observed. Keywords: emerald, chromian spodumene, hydrothermal quartz vein, |  | | 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) | | 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 ClassiďŹcation 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 |  | Groat, L. A., Marshall, D. D., Giuliani, G., Murphy, D. C., Piercey, S. J., Jambor, J. L., Mortensen, J. K., Ercit, T. S., Gault, R. A., Mattey, D. P., Schwarz, D., Maluski, H., Wise, M. A., Wengzynowski, W., Eaton, D. W. (2002) MINERALOGICAL AND GEOCHEMICAL STUDY OF THE REGAL RIDGE EMERALD SHOWING, SOUTHEASTERN YUKON. The Canadian Mineralogist, 40 (5) 1313-1338 doi:10.2113/gscanmin.40.5.1313 | Journal (article/letter/editorial) | | MINERALOGICAL AND GEOCHEMICAL STUDY OF THE REGAL RIDGE EMERALD SHOWING, SOUTHEASTERN YUKON LEE A. GROAT§ Department...discovered a major occurrence of emerald in the Finlayson Lake district of southeastern Yukon. The Regal...contact with a mid-Cretaceous granitic pluton. The emerald crystals occur where quartz veins cut mica-rich...chromophore. Fluid-inclusion data indicate that the emerald precipitated from a fluid whose maximum salinity...equivalent. The oxygen isotopic composition of the emerald is highly variable (12.3 to 14.8â°), but there is |  | | 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 |  | Trumbull, Robert B., Krienitz, Marc-Sebastian, Grundmann, GĂźnter, Wiedenbeck, Michael (2009) Tourmaline geochemistry and δ11B variations as a guide to fluidârock interaction in the Habachtal emerald deposit, Tauern Window, Austria. Contributions to Mineralogy and Petrology, 157 (3) 411-427 doi:10.1007/s00410-008-0342-9 | Journal (article/letter/editorial) | | fluidârock interaction in the Habachtal emerald deposit, Tauern Window, Austria Robert B. Trumbull Ă Marc-Sebastian...from the Habachtal emerald deposit in the Eastern Alps formed together with emerald in a ductile shear...zone during blackwall alteration and tourmaline-emerald mineralization. A regional metamorphic fluid carried...distinction of hosting one of Europeâs few important emerald deposits. Habachtal emeralds were systematically...(Grundmann and Morteani 1982, 1989) established that emerald formation was related to blackwall metasomatism |  | | Book | | include: tourmaline (schort and elbaite), mica (muscovite, phlogopite). beryl. garnet (spessartine). columbite-tantalite...FluideinschlĂźssen (.. negative Kristalle") aus der Emerald & Hiddenite Mine im Alexander County, North Carolina/USA...two-phase inclusions (.. negative crystals") from the Emerald & Hiddenite Mine, Alexander County, North Carolina/USA...brookite, titanite, tourmaline, pyrrhotite, pyrite, muscovite, chlorite and several sulfosalts. Fe- and Mn-oxides/hydroxides...oft spektakulären Erzmineralien geringere Interesse am Quarz eine nicht unwesentliche Rolle, derartiges |  | 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. MARSHALL§ Department of Earth Sciences...Columbia V6T 1Z4, Canada ABSTRACT Vanadium-rich emerald at the Lened occurrence, Northwest Territories...within a fractured garnetâdiopside skarn. The emerald is generally found in quartzâcarbonate veins with...with mm-scale alteration haloes of muscovite and carbonate. The skarn is hosted within the Cambro-Ordovican |  | | 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) | | com/locate/oregeorev Ore formation of the Dayakou emerald deposit (Southwest China) constrained by chemical and...Trace elements Emerald deposit China Dayakou The Cretaceous Dayakou emerald deposit (southwest China)...from the Dayakou deposit, aiming to constrain the source of ore-forming fluid and emerald genesis. Two types...types of tourmaline, namely type-I formed in emerald-bearing quartz veins and type-II in non-mineralized...Cr) in tourmaline, we propose that the Dayakou deposit is dominantly controlled by the fluid-rock interaction |  | | Journal (issue) | | No. 3 / 2022 Emerald from Chitral, Pakistan Turquoise from Xinjiang, China Emerald Jewels from St...This emerald-bearing pectoral cross (12.5 Ă 5.8 cm) was donated to St Peterâs Archabbey in Salzburg, Austria...assumed the emeralds came from Austriaâs Habachtal deposit, microscopic examination and portable EDXRF chemical...this issue. Courtesy of St Peterâs Archabbey, Salzburg; photo by N. Urban. 213 Whatâs New Yehuda Diamond... Gem Notes 234 Emerald from the Chitral Region, Pakistan: A New Deposit Emerald with BertranditePhlogopite |  | 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 |  | 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 δ11B...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 |  | | Book | | Marshall, Anthony E. Fallick and Yannick Branquet Emerald Deposits: A Review and Enhanced ClassiďŹcation Reprinted...Sapphire in Newly Discovered SpinelâChloriteâMuscovite Rocks within Meta-UltramaďŹtes of Ilmen Mountains...review proposed an enhanced classiďŹcation for emerald deposits based on the geological environment (magmatic...sapphires were formed together with a spinelâchloriteâmuscovite rock during the metasomatic alteration of orthopyroxenites...one of the images (inclusions hosted in Russian emerald) for the cover page of this Special Issue book |  | | Journal (article/letter/editorial) | | VIGEZZITE AND ASSOCIATED OXIDES OF NbâTa 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, schorlâdravite, columbite, tantalite, Vigezzo...minerals and crystals of green, Cr-rich beryl (emerald). Furthermore, two new minerals, roggianite (Passaglia |  | Lake, Donald J., Groat, Lee A., Falck, Hendrik, Mulja, Thomas, CempĂrek, Jan, Kontak, Daniel, Marshall, Daniel, Giuliani, Gaston, Fayek, Mostafa (2017) Genesis of Emerald-Bearing Quartz Veins Associated With the Lened W-Skarn Mineralization, Northwest Territories, Canada. The Canadian Mineralogist, 55 (4) 561-593 doi:10.3749/canmin.1700025 | Journal (article/letter/editorial) | | (2017) DOI: 10.3749/canmin.1700025 GENESIS OF EMERALD-BEARING QUARTZ VEINS ASSOCIATED WITH THE LENED... Winnipeg, Manitoba R3T 2N2, Canada ABSTRACT Emerald at the Lened occurrence in the western Northwest...transparent, bluish green, and can be considered pale emerald. Using field relationships, Ar-Ar dating, whole-rock...B), and mineral chemistry, the sources of the emerald-forming fluids and chromophores have been assessed;...(Ar-Ar muscovite) Lened emerald occurrence is a Type I (igneous) skarn-hosted emerald deposit related |  | | 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 |  | | 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 |  | Franz, Gerhard, Vyshnevskyi, Oleksii, Taran, Michail, Khomenko, Vladimir, Wiedenbeck, Michael, Schiperski, Ferry, Nissen, JĂśrg (2020) A new emerald occurrence from Kruta Balka, Western Peri-Azovian region, Ukraine: Implications for understanding the crystal chemistry of emerald. American Mineralogist, 105 (2) 162-181 doi:10.2138/am-2020-7010 | Journal (article/letter/editorial) | | Mineralogist, Volume 105, pages 162â181, 2020 A new emerald occurrence from Kruta Balka, Western Peri-Azovian...Implications for understanding the crystal chemistry of emerald Gerhard Franz1,*, Oleksii Vyshnevskyi2, Michail...D-10623 Berlin, Germany 2 Abstract We investigated emerald, the bright-green gem variety of beryl, from a...emeralds from selected occurrences worldwide (Austria, Australia, Colombia, South Africa, Russia) to...(apfu) is valid; only some samples such as the emerald from Kruta Balka deviate from this value (2.944 |  | Marshall, Dan, Groat, Lee, Giuliani, Gaston, Murphy, Don, Mattey, Dave, Ercit, T.Scott, Wise, Michael A, Wengzynowski, William, Eaton, W.Douglas (2003) Pressure, temperature and fluid conditions during emerald precipitation, southeastern Yukon, Canada: fluid inclusion and stable isotope evidence. Chemical Geology, 194 (1) 187-199 doi:10.1016/s0009-2541(02)00277-2 | Journal (article/letter/editorial) | | Pressure, temperature and fluid conditions during emerald precipitation, southeastern Yukon, Canada: fluid...Crown emerald veins are somewhat enigmatic, displaying characteristics that are common to emerald deposits...consisting of tourmaline, quartz, muscovite, chlorite and emerald. The veins weather a buff brown colour...primary fluid inclusions within emerald growth zones are consistent with emerald precipitation from H2O â CO2...uplift rate for the region of 0.02 â 0.07 mm/year. Emerald deposits are generally formed when geological conditions |  | | 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 emeraldâfrom its less ite, role of historyâs 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 |  | | Book | | undertake the task of abridging my much larger book, Emerald and Other Beryls (Chilton Book Co, 1981) to provide...literature, Mr Readâs 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 Budhaâs tooth emerald 15 Hernando Contez...use of beryls in the Americas 15 Chapter 2 Emerald and beryl in medieval and modern Europe 18 Biblical |  | | 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 theyâre 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, $3.50â etc.) W ouldnât 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, |
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Emerald deposit, Leckbachgraben, Nasenkopf mountain, Bramberg am Wildkogel, Zell am See District, Salzburg, Austria