 | | Journal (article/letter/editorial) | | from South Baldface Mountain, North Chatham, Carroll County, and the Sugarloaf Mountain area, Grafton County...Government pit at Albany, the Iron Mountain quarries at Bartlett, Green Mountain near Effingham, and the Hamm...and Rutherford mine pegmatites, of the Amelia district, Amelia County, and as irregular grains replacing...replacing beryl at the Irish Creek tin deposit, Rockbridge County, Virginia. Well-formed crystals from the...reportedly reached 5 cm in length although the Amelia district is perhaps better known for micro-sized phenakite |  | 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) | | 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 | | ADOLFSSON, STIG G. Hrudeposit, Sweden 3:38-39 Notes on recent underground collecting...collecting at L.\ngban [Sweden] 10:215-217 ADULARIA Adu Iaria from the Howard-Montgomery quarry, Howard...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 |  | | 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 |  | | Report (issue) | | Discovery Stoppaniite Fabio Tamagnini Page 40 Emerald and Aquamarine in Canada Lee A. Groat Page 22...are widely used (see page 22). These include aquamarine, red beryl, morganite, emerald, goshenite, and...varieties emerald and aquamarine are surrounded by the ancient mysticism of birthstones. Emerald, aquamarine...smaragdus" referred to what would be known today as emerald; "beryllus" is the Latin term for beryl; "sea green...of emerald, the modern designations for the beryl varieties emerged much later than did "emerald" and |  | | Book | | Marshall, Anthony E. Fallick and Yannick Branquet Emerald Deposits: A Review and Enhanced ClassiïŹcation Reprinted...review proposed an enhanced classiïŹcation 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 ClassiïŹcation....Paris-Lodron-University of Salzburg, Hellbrunner Str. 34, A-5020 Salzburg, Austria; franz.neubauer@sbg.ac |  | | Book | | 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 |  | | Journal (article/letter/editorial) | | quartz, but locally contains Cr-bearing beryl (emerald) or Cr-bearing spodumene (hiddenite). These gem...phase in spodumenebearing veins, but is absent in emerald-bearing veins. Chabazite-Ca occurs as simple penetrating...20560, USA e-mail: wisem@si.edu the gem trade as emerald and hiddenite, respectively. According to Wise...Cr-bearing spodumene is not known from other worldwide emerald deposits. The unusual geochemical features of the...the North American Emerald Mine (NAEM) property (part of the former Rist Emerald mine), chabazite was |  | | Report (issue) | | Germany. The tin deposit in Ehrenfriedersdorf is the putative type locality for apatite (see page 18). Later...apatite structure is complex and contains three district sites on which the cations sit. The calcium and...Chlorapatite Occurrence, Frontenac County, Ontario, Canada (see page 37-39). To indicate the monoclinic symmetry...the Sapo Mine, Minas Gerais Brazil (Menezes 2009) (see page 54). The chemistry of these samples varies but...distinct color change under different light sources (see page 10) Color Enhancement The color of blue-green |  | | 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 |  | | Journal (issue) | | SPECIAL ISSUE December 2015 WORLD EMERALD UPDATE Highlights of Bogota Symposium Colombia opened its...worldâs leading emerald experts from October 13-15. The First International Emerald Symposium was a huge...around the world taking part. More than 42 global emerald specialists from governments, labs and private...Fedesmeraldas, the Colombian Emerald Federation, and supported by all the countryâs emerald-related bodies and...challenges and opportunities faced by the worldâs emerald industry, including resource management, manufacturing |  | | Journal (issue) | | from the C en ten n ia l Eureka m in e, T intic district, Juab C ounty, U ta h ..........................Mineral Show in the "David P. Wilber Reunion" case (see W hat's new in minerals, this issue). Photo by Jeffrey...traveling on the backs o f donkeys to isolated mountain communities. He later served in the Puebla legislature...search them out anyway, hoping to find that rare deposit which will yield som ething more than ju st another...end o f the Wallapai Mining District. The major mining centers of the district included Cerbat, Chloride |  | | Book (edition) | | amphibole group). For more detailed information see "Dana's System of MineralogyâąÂ· ( 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 |  | | 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 |  | Trumbull, R. B., Slack, J. F., Krienitz, M.-S., Belkin, H. E., Wiedenbeck, M. (2011) Fluid sources and metallogenesis in the Blackbird Co-Cu-Au-Bi-Y-REE district, Idaho, U.S.A.: insights from major-element and boron isotopic compositions of tourmaline. The Canadian Mineralogist, 49 (1) 225-244 doi:10.3749/canmin.49.1.225 | Journal (article/letter/editorial) | | METALLOGENESIS IN THE BLACKBIRD CoâCuâAuâBiâYâREE DISTRICT, IDAHO, U.S.A.: INSIGHTS FROM MAJOR-ELEMENT AND...the Mesoproterozoic Blackbird CoâCuâAuâBiâYâREE district, Idaho, where it occurs in both mineralized zones...mineralogist Sommaire La tourmaline est rĂ©pandue dans le district Blackbird, en Idaho, dâĂąge mĂ©soprotĂ©rozoĂŻque,...compositions of tourmaline from the Blackbird district in central Idaho, U.S.A., with the aim of gaining...contained boron and mineralizing fluids. The Blackbird district is metallogenically important because it hosts |  | | Report (volume) | | vein size: an example from the Guanajuato mining district (Central Mexico) Fluid flow and fracture systems...basin, South Africa ROSSETTI, P. & COLOMBO, F. Adularia-sericite gold deposits of Marmato (Caldas, Colombia):...dilatant faults during thrusting: the Colombian emerald deposits BROWN, M. A. N., JOLLY, R. J. H., STONE...because he was late for a meeting at the Lisheen deposit, he threw some water on it and drove on! Anyone...mineralised vein deposit: & RAFTER, J. P. 1991. An appraisal of CaledoCurraghinalt gold deposit. County Tyrone |  | 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) | | protoliths to form gem minerals. Keywords Gems . Emerald . Ruby . Garnet . Zoisite . Lapis-lazuli . Metamorphism...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...and geometric analysis provided evidence that emerald mineralisation is associated with structural events...compressive tectonic event whereas the eastern emerald deposits, such as that of Chivor, present extensional |  | | Book | | mainland Tanzania) and then progressing to Kenya - I am proud to say that the coloured gemstones of these...the Neoproterozoic Metamorphic Mozambique Belt (see box on page 15). This geological entity hosts the...S-sapphire D-diamond Sn-tin (cassiterite) E-emerald T -tourmaline Am- amethyst Mahenge sedimentary ⥠pl...For a Iist of East African type mineral species, see page 222. Burundi Of the five East African countries.../ND/AN Neoproterozoic Metamorphic Mozambique Belt (see box opposite). OCEAN Figure 8 Geographic map of |  | | Book | | Quarries, graveI pits, roadcuts and tunnels let us see the mineralogic components of the hard rock commonly...about 16 km lies in the fact that the processes of mountain building and faulting have brought deeper materials...particularly in its specialized fields of ore deposit science (economic geology), geochemistry, and applied...Other important deposits are found in the Cobalt district of Ontario, Canada, as well as in Mexico and Bolivia...Brandholz, Fichtelgebirge, the Hohen Tauern at Salzburg, Austria, the 150-km-long gold vein known as the Mother |  | | Book | | prospectors by placer mining. It is found along the mountain ranges of the western states, including California...Australia at Kalgoorlie; in the Cripple Creek district, Teller Co., Colorado and in Calaveras Co., California...(Landsberg) in W. Germany. The most important economic deposit is at Almaden, Ciudad Real, Spain. In California...From Carn Brea. Cornwall 22 ETC hot-spring deposit at Steamboat Springs, Nevada. Large workable deposits...taken is Lolling, near Huttenberg, Carinthia, Austria; other localitiesarethe Harz Mountains, Saxony |  | | Book (edition) | | Cultured Pearl 120 Demantoid 130 Diamond 138 Emerald 146 Fancy Sapphire 154 Imperial Topaz 162...instrument used to measure the refractive index of gems, see page 289). My âfirst contactâ with gemstones happened...years ago under the shadow of Khao Ploi Waen, âthe mountain of gemstone ringsâ in Thailand's Chanthaburi Province...independently appraised (see Though mineral or organic materials (see page 50) might be worn for personal...cutting can also reduce the impact of inclusions (see below) by placing them in locations not immediately |  | | 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/$ â 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 ïŹrst 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/$ â 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 ïŹrst step has already been taken |  | | Book (edition) | | materials described. I, as editor and major contributor, am ultimately responsible for those omissions and inaccuracies...This book is not intended to be a bench manual; see references in many places below to The Identification...what I am about to recommend, monographs by their nature cannot be so up-to-date; the ones I am using...authorities and cited full details in the text; I am grateful to my very large personal library for virtually...didactic and flowery style to suit modern standards. I am strengthened in this decision by the welcome appearance |
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