 | | 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) | | Can anyone supply information on the occurrence? District oí Columbia—On a recent visit to Washington, the...(green, in granite), limonite (dark brown pebble), marcasite (tiny flat crystals in rock), microline (reddish...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 Hampshire—A nice specimen...specimens of grayish-white cellular, felted masses of mountain leather (amphibole) occur in the Josephine mine |  | | 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 |  | | 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 |  | | 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 |  | Lynch, E. P., Costanzo, A., Feely, M., Blamey, N. J. F., Pironon, J., Lavin, P. (2014) The Piteiras emerald mine, Minas Gerais, Brazil: fluid-inclusion and gemmological perspectives. Mineralogical Magazine, 78 (7) 1571-1587 doi:10.1180/minmag.2014.078.7.04 | Journal (article/letter/editorial) | | 2014, Vol. 78(7), pp. 1571–1587 The Piteiras emerald mine, Minas Gerais, Brazil: fluid-inclusion and...biotite-phlogopite schist and range from 0.5 to 50 mm long. Emerald mineralization is associated closely with alkaline...WORDS : Emerald, Brazil, gemmology, fluid inclusions, microthermometry, Piteiras. Introduction EMERALD mining...America. Brazilian emerald deposits account presently for ~10 20% of world emerald production, which ranks...Minas Gerais, and thus the modern era of Brazilian emerald production began (cf. Machado and Figueirôa, 2001) |  | | 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 |  | | 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) |  | | 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) | | 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 (issue) | | JANUARY-FEBRUARY 2016 • VOLUME 47 • NUMBER 1 $20 . The Emerald 1Iline£ of Jlolom6ia 1Iline.s, 1Ilineral.s, :pi...& Advertising Manager Thomas P. Moore COVER: EMERALD crystal with calcite, 6.5 cm, from the Cosq uez...Faults, Black Shales, Carbonate Veins ........ 21 Emerald Mineralization ....................................... 32 An Emerald Crystal Album .................................... 36 Great Emerald Crystals and...Twelve thousand people paid a quarter apiece to see it in New York, after which it toured Great Britain |  | | 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...form is found at Galena, Illinois. Treatment. Marcasite is a fairly unstable mineral and is liable to |  | | 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 ‘first contact’ with gemstones happened...years ago under the shadow of Khao Ploi Waen, ‘the mountain of gemstone rings’ 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 |  | | 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 |  | | 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 (issue) | | more likely to go wherever they must in order to see important new museum displays. Also, major mineral...Art & Gems Carl & Naom i Bird Wirewrapping China Mountain Turquoise Co Collector's Edge Collector's Stope... Mineral Exploration Services Morgan Trinkets Mountain Minerals International Mt. Royal Gems ND - Gems...XTAL—Dennis Beals Zeolites India—Dr. Jay Zaveri See us also in * Las Vegas at the Tropicana, June 2-4...W est side of Hwy. 62 W endy & Frank M elanson L ’Am able, Ontario K0L2L0 Tel: (613) 332-1032 • FAX: (613) |  | | 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/$ – 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 first 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/$ – 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 first step has already been taken |  | | Journal (issue) | | refineries in Britain and Norway. The flare boom you can see extending from the rig platform is used to burn off...WORLD 0 F - - -- r°J The world's finest jet deposit is found at Whitby in Yorkshire, England. The British...ancient metamorphic roc ks. The original alexandrite deposit was found in 1830 on Crown Prince (later Tsar)...below the crucial cut-off temperature of 180°C (see main text). Thus acanthite is typically a product... with fine deposits occurring in Switzerland, Austria and northern Italy. Albite is a mineral that is |  | | Journal (issue) | | NUMBER SIX APRIL 1991 Cover Picture A crystal of emerald on calcite from Muzo, Colombia, from The Mineral...they sailed for England, first visiting Heacham to see his mother before being presented at the court of...years. In the poor light of the interior I could see a bas-relief sculpted bust of Pocahontas which had...Association basic metamorphic rocks (e.g. Hungary, Austria, New Jersey/USA), 3. in limestone contact zones...has just given the final polish to a well-made emerald-cut quartz. J. Gemm., 1991,22,6 The plans for |  | | 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 |  | Wang, Rongchao, Liu, Zhankun, Hollings, Pete, Zhou, Xin, Guo, Yongchao, Li, Bin, Yu, Miao, Yang, Bin, Mao, Xiancheng, Lai, Jianqing (2021) Fluid evolution of the Humedo porphyry-related gold deposit, southern Ecuador: Evidence from the boron isotope and chemical variations of tourmaline. Ore Geology Reviews, 128. 103894pp. doi:10.1016/j.oregeorev.2020.103894 | Journal (article/letter/editorial) | | evolution of the Humedo porphyry-related gold deposit, southern Ecua‐ dor: Evidence from the boron isotope...evolution of the Humedo porphyry-related gold deposit, southern Ecuador: Evidence from the boron isotope...evolution of the Humedo porphyry-related gold deposit, southern Ecuador: Evidence from the boron isotope...in the Cangrejos–Zaruma district, Ecuador, northern Andes. The Humedo deposit, 5 with a defined gold...porphyry– 6 epithermal gold deposit in the southwest Cangrejos–Zaruma district. Here the textures, 7 geochemistry |  | | Journal (issue) | | Picture Faceted sapphire from Cyangugu district, SW Rwanda. See Investigations on sapphires from an alkali...Sapphires have been discovered in the Cyangugu district in south-west Rwanda (bordering Zaire) and details...Switzerland Abstract A new deposit of sapphires in the Cyangugu district of SW Rwanda has been investigated...investigate a new sapphire deposit in a basalt province in the Cyangugu district, SW Rwanda (Figure 1). This...representative sapphire samples from the Cyangugu district were selected for the laboratory and investigated |  | | 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 |  | | Report (edition) | | expanded to include additional occurrences of emerald, opal, agate, chalcedony, organic gems, tiger eye............................................. 33 Emerald............................................................................... 225 Pyrite and marcasite.............................................................................. 226 Pyrite and marcasite in Western Australia............................. 227 Geological environments for pyrite and marcasite.............................................. |
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