 | Abd El Rahman, Reham, Taalab, Sherif, Al Full, Zainab, Mohamed, Mostafa, Sayyed, M., Almousa, Nouf, Hanfi, Mohamed (2022) Natural Radionuclide Levels and Radiological Hazards of Khour Abalea Mineralized Pegmatites, Southeastern Desert, Egypt. Minerals, 12 (3) 353 doi:10.3390/min12030353 | Journal (article/letter/editorial) |
| Abalea Mineralized Pegmatites, Southeastern Desert, Egypt Reham M. Abd El Rahman 1 , Sherif A. Taalab 2, *...Abalea Mineralized Pegmatites, Southeastern Desert, Egypt. Minerals 2022, 12, 353. https://doi.org/10.3390/...Materials Authority, El Maadi, Cairo P.O. Box 530, Egypt; mounir_r79@yahoo.com (R.M.A.E.R.); mostafa24264@hotmail...Science, Al-Azhar University, Cairo P.O. Box 11884, Egypt Department of Physics, Taibah University, Almadinah...ophiolitic melange, granitic rocks, pegmatite and lamprophyre dykes. The presence of radioactivity associated |
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| 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...F. McClure The relative chemical diversity of emeralds from different deposits worldwide allows clear...GIA to make geographic origin conclusions for emeralds. p. 655 648 Geographic Origin Determination |
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| Marshall, Anthony E. Fallick and Yannick Branquet Emerald Deposits: A Review and Enhanced Classification Reprinted...Mohamed, Supharart Sangsawong and Abeer Al-Alawi Emeralds from the Most Important Occurrences: Chemical...nondestructive methods. He is frequently visiting gem mines and pearl producing areas around the globe and often...and Karampelas et al. [12] present studies on emeralds; the bluish-green to green to yellowish-green...review proposed an enhanced classification for emerald deposits based on the geological environment (magmatic |
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| ACODES (Bogota, Colombia), who gave an Update on Emerald Harmonization; Shane McClure, GIA Global Director...Ismel Quaicoe, a lecturer at the University of Mines and Technology, Tarkwa, Ghana; and Peter Osei, a...and manufacture. He also organized trips to the mines and markets in gemproducing areas around the world...variety of gems, including this example of vibrant emeralds. 12 InColor Spring/Summer 2020 By Cynthia Unninayar...nomads found sapphires in Northern Kenya; Ethiopian emeralds were found by shepherds; and Mozambican rubies |
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| the notable exception. KEYWORDS : gems, diamond, emerald, sapphire, ruby, geochemistry, exploration INTRODUCTION...(C), ruby (red gem corundum, Al2O3), sapphire (any other color of gem corundum), and emerald (green chromium/...requirement for a major element and a chromophore is emerald. Beryl is a relatively rare mineral because there...with tectonic activity were sufficient to form emerald (e.g. Ottaway et al. 1994; Cheilletz and Giuliani...formation, have played a significant role in certain emerald deposits (notably Habachtal in Austria, Leydsdorp |
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| aquamarine and yellow heliodor, and very rarely emerald, have been seen by the author in Brazil. The studied...60. In LW UV it is inert, but in SW UV it shows red fluorescence. These properties indicate moonstone...the suns tone is inert, but in SW UV it shows dark red fluorescence. The cause of chatoyancy is visible...former USSR. The cat's-eye weighs 2.27 ct, is pinkish-red, with RI (measured on a flat, polished base) of 1...Capillitas in Argentina. The star stone is a dark pinkish-red cabochon of 12.83 ct. Its RIs are 1.695 and more |
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| Cook, and Robert Weldon 16 The Gujar Killi Emerald Deposit, Northwest Frontier Province, Pakistan...North America and his most recent, the monumental Emerald and Other Beryls, are now classics. Because even...of volume 2 of G.E Williams's 1902 The Diamond Mines of South Africa depicts the author's collection...of Gardner F. Williams's two-volume The Diamond Mines of South Africa, 1902, of which only 100 copies...document the gems (figure 5), personalities, and mines of South Africa in the late 1800s. Sir William Croolzes |
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| reverrl dark violet to almost black "cores" 017d red "rims." W i t h heat treatment, which removes their...blue color componer~t, the cores become intense red. The rubies grew umder varying conditions in complex... currenttv z?t Habard Un&ersilvBusiness School. Sea v s at the end of [liearticle. are b y the authors...treatment, the violet cores can be converted to red. Large quantities of untreated corundum crystals...a series of rough samples with violet cores and red outer layers (called rims here for simplicity). Six |
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| particular: these were were in the estuary of the Red in particular: (Song Hong) and aa station in Hanoi...northwest of the capital and is isolated from the Red River by a high-water protection dam. The water quality...Hai Hung Province, the latter two are both in the Red River delta. With increasing freshwater pearls output...a few alexandrites are associated with emeralds and turning red in incandescent light. which are found...(alexandrite) from these deposits is a by-product of emerald mining. See Schwarz (1987) for more details regarding |
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| (involving more than 1000 samples) of a range of emeralds and green beryls from Central Nigeria. Detailed...confident identification of emeralds from this locality. Some Nigerian emeralds do contain spiky three-phase...three-phase inclusions and resemble Colombian emeralds, but again the means for distinguishing between stones...the extensional tectonics along this rift, the Red Sea opened in the northern part, whereas in the south...alluvial deposits are found together with zircon (red-brown and colourless transparent), magnetite, hematite |
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| Dietrich Klemm Gold and Gold Mining in Ancient Egypt and Nubia Geoarchaeology of the Ancient Gold Mining...a joint project with the University of Assiut, Egypt, our attention was drawn to this aborted program...and ascribing them to the chronologies of Ancient Egypt and Nubia • Investigating the geology of ore deposits...out to spread far beyond the southern borders of Egypt and well into the Nubian territories of NE Sudan...which gold quartz ores previously collected from wadi sediments had been processed in the same way as |
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| will include important contributions on rubies, emeralds and collectors' gems. Plans are in hand for further...and the quiet trickle of sand on the bottom of the sea stir up everlasting motion - there lies the cradle...UTD: I did not notice much. The famous sapphire mines are Loke Khat (Kadaykadar), Chaunggyi (north of...Unknown Author, R.W.H. Unnamed 41.04ct; faceted; emerald-cut; sold at Sotheby's New York, October 1986 for...Reference Unnamed 3121b (141.5kg; 707,500ct); opaque, red and blue crystal (not gem quality) Franklin, NC |
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| the Palermo #1 mine in New Hampshire and various mines in the Black Hills of South Dakota) and secondary...It was a great sadness to him when the Tri-State mines finally closed down. Elsing favored crystal collecting...Paul J. Bartos Director/Curator Colorado School of Mines Geology Museum Golden, CO 80401 The Cripple Creek...tons (22 million troy ounces) of gold from its 500 mines, making it the third most productive gold district...district in Nevada). Cripple Creek’s roughly 500 mines have produced more than 22 million troy ounces (614 |
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| in line with modern knowledge. In the cases of emerald and ruby and sapphire new sources of supply have...edition. Thanks, too, to De Beers Consolidated Mines Ltd, for the information on the Botswana diamond...xxi Preface to the Second Edition Consolidated Mines Ltd; Messrs Garrards Ltd (The Crown Jewellers);...the incorporation in this work of my articles on emerald, ruby and sapphire, and marble, as well as a number...right) in eclogite, which also contains garnet (red) and pyroxene (black) One other kind of volcanic |
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| Trade Fabergé and Gemfields Create Fair Trade Emerald Necklace Gemology Zoisite – More than just Tanzanite...public concern on fair and ethical practices from mines to market. Building consumer confidence in the industry...auction of mainly medium- to higher-quality rough emeralds, held on March 19 to 23, 2012 in Singapore, generated...with 29 placing bids. Some 0.77 million carats of emeralds mined by Gemfields were placed on offer, with...carat, the overall quality characteristics of the emeralds placed on offer at the March 2012 auction were |
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| 1988 Aquamarine, red and other colours (NC) AS Lebedev/USSR HyS 1994 Emerald, red beryl Tairus/Russia...including emerald, aquamarine and red beryl Flux method: 1848 Emerald (IS, NC) 1888 Emerald (IS, NC) 1925...1925 Emerald (IS, NC) 1934 Emerald (IS, NC) 1938 Emerald 1964 Emerald 1964 Emerald (SP) Hydrothermal...and other methods: 1960 Emerald (IS, NC); emerald over-growth (SP) 1965 Emerald 1979 Watermelon beryl (SP)...(SP) 1981 Aquamarine, pink and red beryl (SP) ? HyS 128 129 131 129 141 144 130 Corundum: ruby, blue |
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| and mineral specimens Dr Michael Wise Hiddenite emerald deposits of North Carolina David Fisher Progress...Peter Rainier’s footsteps: journey to the Chivor emerald mine Bill Larson Gemstones and gem mining in San...Lefèvre, Wei Zhou and Laurent Cartier 224 Synthetic Emeralds Grown by IG Farben: Historical Development and...faceted samples to separate natural ruby, sapphire, emerald, garnet, alexandrite and spinel from synthetics...Almandine from Negev, Israel In 2013, some dark red crystals were found in the southern mountains of |
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| natural green diamonds from the South African gold mines (Raal, 1969). Brief gemmological reports on chameleon...interference colours has been enhanced using a first order red compensator. A small, atypical strain c e n t r e...the the absorption absorption from from the the red red toward toward the the violet, which which is responsible...visible spectrum, spectrum, was was mostly the the red red end end of strong enough compared to to the other... 1989). Therefore, these two relatively recent mines could be the source of these suddenly common H-rich |
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| FEATURE ARTICLES 123 Gemstones of Pakistan: Emerald, Ruby, and Spinel E. J. Gubelin 140 The Gemological...not of the publishers. GEMSTONES OF PAKISTAN: EMERALD, RUBY, AND SPINEL By E. J. Gubelin Only during...being mined: emerald, corundum (most importantly, ruby), and spinel. Intensely colored emerald crystals occur...properties and density serve to distinguish these emeralds from those f o u n d elsewhere. Numerous gas-liquid...gemstones occur in Pakistan; the most important are emerald from the Swat Valley (Northwest Frontier Province) |
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| Creek Sapphire Mine of Montana Mining 58 The Mines of The New Black Opal From Ethiopia Jewelry Trends...use of commercial terms, such as “Pigeon Blood” red or “Royal Blue.” On the surface, this makes sense...world record for sapphires buyers. A typical emerald auction would attract 100 potential set at an...really fascinated about how a stone arrived.” Emeralds account for around 75% of Gemfields revenues,...the company has about a year’s supply of both emeralds and rubies. “We’re working hard on exploration |
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| Laboratory-Grown Diamond History of the Chivor Emerald Mine, Part II Optical Whitening and Brightening...laboratory-grown diamond. 230 p. 255 History of the Chivor Emerald Mine, Part II (1924–1970): Between Insolvency and...R. Blake Chronicles developments at the Chivor emerald mine in Colombia between 1924 and 1970, based on...Unusually shaped rutile crystal inclusions in Russian emerald • Sapphire with negative crystal containing mobile...mineral sphalerite • Trapiche-like pattern in emerald from Pakistan • Quarterly Crystal: Pyrite in quartz |
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| Gem News International pg. 71 Tucson report • Emerald-bearing gem pockets from North Carolina • Spessartine...first-place article was “Durability Testing of Filled Emeralds” (Summer 2007), a long-term study of the stability...stability and durability of nine common emerald-filling substances. Receiving second place was “Serenity...winning authors. DURABILITY TESTING OF FILLED EMERALDS Mary L. Johnson Mary L. Johnson is the principal...old [Ma]), which extends from the Mediterranean Sea down to central Mozambique (Lächelt, 2004). COPPER-BEARING |
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| 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) ................ |
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| Pienaar Tourmaline as an Inclusion in Zambian Emeralds John I. Koivula REGULAR FEATURES Gem Trade Lab...nationalized, and supplies of fine gems from these mines declined rapidly. The fact that so little is produced...square kilometer in extent. Bauer noted that the mines at Bo Nawang were small, typically pits one meter...the sand unit in a layer 15-25 cm thick. These mines have been worlzed since about 1875. In 1895, an...Burmese gem-mining operation known as Burma Ruby Mines Ltd. The company was not successful in the Chanthaburi-Trat |
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| commercial product marketed as “Diffusion Ruby” from red lattice diffusion–treated corundum as well as from...“Tashmarine”: Diopside from central Asia • Carved emeralds from an archeological site in Colombia • Hemimorphite...significant supplier of rough diamonds as prolific new mines start production, and this will have a growing impact...anticipated contributions of rough diamonds from Canada’s mines to the world supply are discussed, as are the manufacturing...Canadian exploration arm of De Beers Consolidated Mines Ltd. has operated, since 1960, under a variety of |
