 | | 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, |  | | 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 |  | Che, X. D., Linnen, R. L., Wang, R. C., Groat, L. A., Brand, A. A. (2013) DISTRIBUTION OF TRACE AND RARE EARTH ELEMENTS IN TITANITE FROM TUNGSTEN AND MOLYBDENUM DEPOSITS IN YUKON AND BRITISH COLUMBIA, CANADA. The Canadian Mineralogist, 51 (3) 415-438 doi:10.3749/canmin.51.3.415 | Journal (article/letter/editorial) | | DISTRIBUTION OF TRACE AND RARE EARTH ELEMENTS IN TITANITE FROM TUNGSTEN AND MOLYBDENUM DEPOSITS IN YUKON...Canada Abstract The chemical compositions of titanite in igneous rocks, hydrothermal veins, skarns,...Four kinds of titanite were grouped in our study on the basis of genesis: magmatic titanite from the igneous...hydrothermal titanite from the igneous rocks and hydrothermal veins, metasomatic titanite from the skarn...samples, and metamorphic titanite from the hornfels samples. Magmatic titanite is hundreds of μm long, |  | | 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 |  | Trumbull, Robert B., Krienitz, Marc-Sebastian, Grundmann, Günter, Wiedenbeck, Michael (2009) Tourmaline geochemistry and δ11B variations as a guide to fluid–rock 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) | | fluid–rock interaction in the Habachtal emerald deposit, Tauern Window, Austria Robert B. Trumbull Æ 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 Europe’s few important emerald deposits. Habachtal emeralds were systematically...(Grundmann and Morteani 1982, 1989) established that emerald formation was related to blackwall metasomatism |  | | 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 |  | | Journal (article/letter/editorial) | | VIGEZZITE AND ASSOCIATED OXIDES OF Nb–Ta 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, schorl–dravite, columbite, tantalite, Vigezzo...minerals and crystals of green, Cr-rich beryl (emerald). Furthermore, two new minerals, roggianite (Passaglia |  | | Book | | and Edenville, large, fine crystals of spine!, titanite, amphibole and pyroxene have been found since...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 |  | | Journal (article/letter/editorial) | | peridote, pyrope, rhodolite, spessartine, (chrome) titanite, spinel, ruby, sapphire, padparaja, tanzanite...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 |  | Schilling, Julian, Bingen, Bernard, Skår, Øyvind, Wenzel, Thomas, Markl, Gregor (2015) Formation and evolution of the Høgtuva beryllium deposit, Norway. Contributions to Mineralogy and Petrology, 170 (3) doi:10.1007/s00410-015-1179-7 | Journal (article/letter/editorial) | | Formation and evolution of the Høgtuva beryllium deposit, Norway Julian Schilling1 · Bernard Bingen1 · Øyvind...mixture of both (e.g. the silicic tuffs at Spor Mountain, UT, USA, Burt and Sheridan 1987; Lindsey 1977;...led to the formation of world-class schist-type emerald deposits such as Muzo in Colombia (Banks et al...(Grundmann and Morteani 2008) or Habachtal in Austria (Grundmann and Morteani 1989; Franz and Morteani...1989a, b). For the evolution of the Høgtuva Be deposit, we propose a model that combines Paleoproterozoic |  | | 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 |  | | Journal (article/letter/editorial) | | The emerald deposit at Byrud, Eidsvoll, South Norway Fred Steinar Nordrum, Kongsberg, and Gunnar Raade...Introduction In Scandinavia, just one occurrence of emerald has been mined, located at the Byrud farm on the...Minnesund in Eidsvoll, about 70 km north of Oslo. The deposit was worked by an English company around 1900, and...specimens. History The initial discovery of the emerald occurrence is not documented, but it probably took...pieces with translucent crystals of green beryl (emerald). At a later stage, the name Gustaf Nauckhoff (1847-1919) |  | | 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 |  | Reznitsky, L. Z., Sklyarov, E. V., Armbruster, T., Suvorova, L. F., Uschapovskaya, Z. F., Kanakin, S. V. (2013) Kyzylkumite: a finding in the southern Baikal region, Russia and refinement of its crystal chemical formula. Geology of Ore Deposits, 55 (8) 676-685 doi:10.1134/s1075701513080114 | Journal (article/letter/editorial) | | (schreyerite, berdesinskiite) and Vbearing rutile and titanite. Kyzyl 3+ kumite represents a new structural...kumite V2Ti3O9 discovered in 1980 at an uranium deposit in Kyzyl Kum (Smyslova et al., 1981). The subsequent...identical dspacings and unitcell dimen sions (see below). Some of arising problems are dis cussed...trioctahedral Cr–Vbearing micas, goldmanite, Vbearing titanite and rutile, plagioclase, barite, zir con, and...(schreyerite, berdesinskiite, and rutile) and titanite. In some cases, the replacement starts from formation |  | | 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 |  | | Journal (issue) | | statue at Vientiane’s Haw Phra Kaew (Temple of the Emerald Buddha); rough and faceted sapphires from Laos...America – Brazil and Colombia 48 Clinohumite – The Mountain Fire 52 GemTechLab – 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 |  | | Journal (article/letter/editorial) | | Element Geochemistry of Dayakou Vanadium-Dominant Emerald from Malipo (Yunnan, China): Genetic Model and...Geosciences Beijing, 29 Xueyuan Road, Haidian District, Beijing 100083, China; 2009170025@cugb.edu.cn...Abstract: Emerald from the deposit at Dayakou is classified as a vanadium-dominant emerald together with...emeralds and traced the genesis of the Dayakou deposit, there has not been any systematic comparison or...and the crystallization process of the Dayakou emerald remain controversial. In this study, both major |  | | 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) | | 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 |  | 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 |  | | Journal (issue) | | Special Emerald 2018 – Issue 40 All About Colored Gemstones World Emerald Update Highlights of the...the Second World Emerald Symposium, Bogotá International Gemstone Association AColored Publication of the...Issue 40 ׀InColor 1 2 InColor ׀Special Emerald 2018 InColorMagazine.com; Gemstone.org International... Contents In Side 5 Special World Emerald Update Editor’s 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) | | 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 (edition) | | Zarshouran Au-As deposit, Takab region, Iran Grandviewite, 5 111111, Capillitas deposit, Argentina Calciopetersite...supergroup (Henry et al., AM 96, 895-913, 2011), amphibole supergroup (Hawthorne et al., AM 97, 2031-2048, 2012)...25, 85-90, 2013), garnet supergroup (Grew et al., AM 98, 785-811, 2013) and dumortierite supergroup (Pieczka...crystals x,xx Rep. prov. pref. co. dept. dept. AJM AM CCM CM DANR EJM JMPS MM MP NJMA ZRMO Republic province...munic. St. Ste. Is. Mt. district municipio Saint Sainte island mount, mountain Mts. R. Penin. Vole. Plat |
|
