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| diamond sorter. OBSERVATIONS ON SOME RHODESIAN EMERALD OCCURRENCES By N. A. METSON, B.Sc., and A. M. TAYLOR...authors (A.M.T.) was fortunate to inspect the emerald occurrences near Fort Victoria, Rhodesia. This...guide to the area and for providing additional emerald samples for analysis. J. Gemm., 1977, XV, 8 ...investigation was to try and further our understanding of emerald formation in Nature by studying in particular the...the trace element geochemistry of emerald and associated country-rock. A summary of certain aspects of |
 | | Report (issue) |
| Discovery Stoppaniite Fabio Tamagnini Page 40 Emerald and Aquamarine in Canada Lee A. Groat Page 22...morganite, emerald, goshenite, and heliodor. Known for millennia, the beryl varieties emerald and aquamarine...surrounded by the ancient mysticism of birthstones. Emerald, aquamarine and beryl were all named in Pliny's...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 |
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| south side of the Mweza Greenstone Belt, Belingwe District, 5.2 km west-southwest of the confluence of the...quality, and numerous claims are held in each area. Emerald occurs in other parts of the country, but the stones...quality of the Zeus material. II GENERAL GEOLOGY Emerald, a chromiferous variety of beryl, is found in a...XVI, 3 The beryllium-bearing pegmatites in the emerald localities are derived from the 'younger', intrusive...crystallizing beryl resulted in the deep green emerald colour. Tremolite may have recrystallized during |
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| diamond, GIA Collection no. 37583 (2) a 4.50 ct emerald from Chivor, courtesy of Equatorian Imports; (3)...were combined under the jurisdiction of the U.S. District Court of New Jersey 168 PRODUCTION AND MARKETS...and sapphire accounted for 30% ($3 billion) and emerald 12% ($1.2 billion), with all other gemstones constituting...the export of the 536 kg emerald-in-matrix specimen “Heaven’s Gift Emerald,” which Ravalomanana claimed...start operations at the Kagem mine in the Kafubu District, historically Zambia’s largest source of emeralds |
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| offices in Zambia 36 Kagem confirms third Lusaka emerald auction 38 Lusaka: Graphics and Production Manager...Africa 42 New dawn shuts Dalny Mine in troubled Zimbabwe 44 PWC gold study charts new ground 46 Long-term...Instrument 89 which finance minister Alexander Chikwanda introduced to allow mining firms to export copper...that if the SI was implemented transparently, Chikwanda should have ensured that the mines gave something...away for free like that is not correct.” He said Chikwanda should have sought consultancy beyond government |
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| Gemm., 1991, 22, 5 'Machingwe': A new emerald deposit in Zimbabwe Jan Kanis*, Charles E.S. Arps** and Pieter...promising new emerald deposit in the Mweza Range Greenstone Belt of southern Zimbabwe are discussed and...compared with data from Sandawana and other nearby emerald deposits. Introduction In May 1987 the first author...a short visit to a newly discovered emerald occurrence in Zimbabwe, named 'Machingwe deposit', thanks...assistance of the Mineral Marketing Corporation of Zimbabwe. This Corporation is a state controlled department |
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| pegmatite procince is lound in the basement rocks o f Zimbabwe. Although beryl has hccn the most important mineral...lithium pegmatites of Zimbabwe are found within much older basement rocks of the Zimbabwe craton. 2. The economically...Manono. Shaba, Zaire: 5. Kamativi. Zimbabwe. 6. Bikita. Zimbabwe; 7. Karibib area. Namibia; 8. Noumas...mineralization, and many deposits in Rwanda, Zaire, Zimbabwe, and Namibia have been mined for tin on a large...extremely large concentrations c.g. Bikita in Zimbabwe and a great number of pegmatites in Namibia. Eucryptite |
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| a square-cut, grass-green stone resembling an emerald. It betrayed itself at the first glance under the...crystallite (Fig. 1). This test stone was a synthetic emerald. I n order to verify this verdict the stone's dichroism...a wisp-like recreation fracture of a synthetic emerald in the immediate neighbourhood of a phenakite crystal...9*95 carats, and the other a dark brown trap-cut (emerald-cut) stone weighing 10*11 carats. T h e first of...95-101. 176 WHERE IS THE DIVIDING LINE BETWEEN EMERALD AND GREEN BERYL? By IAN C. C. CAMBELL, T F.G |
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| straightforward names of gemstones such as ruby, sapphire, emerald, garnet, zircon, spinel, tourmaline, topaz, peridot...were some fine green beryls which looked like emerald of good medium quality. They were green when viewed...LIDDIGOAT (R. T.). Developments in the synthetic emerald field. Gems and Gemology, 1964, X I , 5, pp. 131-138...general discussion on the new French synthetic emerald. This agrees in substance with the descriptions...synthetic emerald-coated beryl. This new stone consists of alternate layers of synthetic emerald and white |
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| ( 9 ) 10.45-ct tsavorite, Kenya; (10) 4.82-ct emerald, Colombia; (11) 8.31-ct pink sapphire, Sri Lanka;...important gem materials is provided in figure 2. BERYL Emerald. Major expansion has occurred in the sources of...compete with new localities in Brazil, Zambia, Zimbabwe, Madagascar (Malagasy Republic), Pakistan, and...will remain an iinportant source of high-quality emerald (figure 3). Even so, newer sources now account...tone (Cassedanne and Sauer, 1984).In 1988, new emerald discoveries were made in Bahia at Socoto, in Ceara |
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| tourmaline, (11) 2.16 ct demantoid, (12) 1.05 ct emerald, (13) 1.99 ct red beryl, (14) 0.72 ct ruby, (15)...available. Or the devastation inflicted on the emerald market when the stability of new and even traditional...Thailand, and Vietnam), Africa (Tanzania, Kenya, Zimbabwe, Nigeria, and Namibia, as well as Madagascar)...more commercially important gem materials (i.e., emerald and other beryls, alexandrite and other chrysoberyls...important source of fine emeralds. The Colombian emerald in this pendant weighs 8.40 ct. Courtesy of H. |
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| lithium and emerald; there have also been other gem finds. perhaps not as valuable a emerald,. but nevertheless...deposit of emeralds of the finest quality. Other emerald deposits of lesser importance have since been d...1,379 I 1 TOT AL S �-�� NOTE:-Data relating to emerald production not published. • I t /nc/udes a small...or the K am a t i v i i n l ie r in the \Vankie District, there is again a s i m i l a r as ·ociation or...the h i g h grade regional metamorphism of the district. There is clear evidence that the metamorphism |
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| 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 |
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| important milestone the Mererani hills of Simanjiro district and was a consortium for Richland in developing...world record for sapphires buyers. A typical emerald auction would attract 100 potential set at an...The country said Finance Minister Alexander Chikwanda The government’s aim in raising increased transparency...Russia. The as a rise in production from its emerald achievable prices, is set to continue for company...million carats two auctions held during the second Emerald production from the Kagem of lower-quality emeralds |
 | | Book (edition) |
| extensive fields in the prophetically named Kimberley district of Western Australia promise to be of world importance...in line with modern knowledge. In the cases of emerald and ruby and sapphire new sources of supply have...the incorporation in this work of my articles on emerald, ruby and sapphire, and marble, as well as a number...which consists of quartzite with tiny flecks of emerald-green mica (Figure 1.17). Of widespread occurrence...and are important as the source of chromium for emerald in these regions. In the formation of some schists |
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| and Kerogen from the Archaean Stromatolites in Zimbabwe: P. I. Abell and J. McClory . . . . . . . . ....stromatolites of the Belingwe greenstone belt, Zimbabwe, is presented by Abell and McCory, including carbon...and kerogen from the Archaean stromatolites in Zimbabwe Paul I. Abell and Joseph McC/ory Department of...stromatolites of the Belingwe greenstone belt, Zimbabwe. is presented. includ ing carbon isotopic ratio...Formation of the Belingwe gree nstone belt in Zimbabwe (Figure 1). The field geology has been described |
