 | | Journal (article/letter/editorial) | | The Netherlands GEOLOGICAL SETTING OF ZAMBIAN EMERALD DEPOSITS A.S. SLIWA and C.A. NGULUWE Zimco Limited...Lusaka (Zambia) ABSTRACT Sliwa, A.S. and Nguluwe, C.A., 1984. Geological setting of Zambian emerald deposits...deposits. Precambrian Res., 25 : 213--228. The Kafubu emerald deposits occur within rocks of the Muva Supergroup...immediately southwest of the well known Copperbelt of Zambia. Within the Muva Supergroup are persistent...Pegmatites occur as feldspar--quartz--muscovite bodies or as minor quartz--tourmaline veins. Contact aureoles |  | Ren, Junping, Wang, Jie, Zuo, Libo, Liu, Xiaoyang, Dai, Chaocheng, Xu, Kangkang, Li, Guozhan, Geng, Jianzhen, Xiao, Zhibin, Sun, Kai, He, Fuqing, Gu, ALei (2017) Zircon UāPb and biotite 40Ar/39Ar geochronology from the Anzan emerald deposit in Zambia. Ore Geology Reviews, 91. 612-619 doi:10.1016/j.oregeorev.2017.08.034 | Journal (article/letter/editorial) | | and biotite deposit in Zambia 40 Ar/39Ar geochronology from the Anzan emerald ā Junping Rena, , Jie...Biotite 40Arā39Ar age Anzan emerald deposit Zambia The Kafubu Emerald Area in Zambia is an important producer...rock and emerald-hosting biotite chlorite schist from the Anzan emerald deposit in the Kafubu area, Zambia...chronology measurements of the country rock and emerald-hosting rock which belong to Muva Supergroup, yielding...redeļ¬ned the age of Muva Supergroup in the Copperbelt Province in Zambia to be older than or equal to 1966 Ā± |  | | Journal (article/letter/editorial) | | Kagem mine, the largest emerald mine in the world, in the Kafubu district, Copperbelt Province, Zambia...Zambia. This mine, which has been producing exceptional gem rough since the 1970s, has recently been the...green gemmy emerald crystals in white quartz matrix. Emerald was first discovered in the Kafubu area by the...is known as the Miku locality. Only small quantities of relatively mediocre emerald rough were produced...9(3: Figure 1. A recent view of part of the Kagem mine showing subvertical pegmatite dike swarms in the |  | | Other Paper | | Large-scale mining license 3. Large-scale gemstone license Main Points of the Zambian Mining Act ļ· ļ· ļ·...7. Artisanal mining right ļ· ļ· 4. Small-scale prospecting permit 5. Small-scale mining license 4. Royalties...exceed 4 km2 Exclusive rights for exploration and mining operation for 2 years, not renewable Not to exceed... Appendix II-2 Structure of Mineral Rights in Zambia Type of Right Place of Application Required Documents...relinquishment is mandatory for renewal. LARGE-SCALE MINING LICENSE Registry for Minerals Rights (RMR) - Prescribed |  | | Journal (issue) | | areas (X6807) : major Ca-rich plagioclase, minor quartz. Brown areas (X6730, X6807A) : major Ca-rich plagioclase...minor quartz. Green area (X6806) : major Ca-rich plagioclase, major diopside, zoisite, minor quartz X-ray...other minerals, notably epidote, garnet, natrolite, quartz and scapolite. T h e minerals are usually associated...Mineralogie, Vol. I I , Leipzig. 7 THE EMERALD OCCURRENCE OF MIKU, ZAMBIA By PROFESSOR DR HERMANN BANK, F.G...of emeralds which are reported to originate in Zambia. " T h e suppliers who cut these stones would give |  | | Journal (issue) | | properties. pg. 89 116 Emeralds from the Kafubu Area, Zambia J. C. (Hanco) Zwaan, AntonĆn V. Seifert...properties of emeralds from this, the second largest emerald-producing country in the world, are described....again producing fine tourmalines, with both the mining area and the gems examined in this report. pg....Fluorite inclusions in quartz from Madagascar ā¢ Bismuthinite inclusions in rose quartz from Madagascar ā¢ Yellow...lead the Instituteās groundbreaking studies on emerald fillers and diamond cut proportions. EDITORIAL |  | | Journal (article/letter/editorial) | | i e r. c o m / l o c a t e / o r e g e o r ev Emerald deposits and occurrences: A review L.A. Groat a...Available online 22 April 2008 Keywords: Emerald deposits Emerald occurrences Crystal chemistry Geochemistry...isotopes Classiļ¬cation Exploration A B S T R A C T Emerald, the green gem variety of beryl, is the third most...emeralds. However there is speculation that the emerald mines in Colombia are becoming depleted. Brazil...currently accounts for approximately 10% of world emerald production. Emeralds have also been mined in Afghanistan |  | | Report (issue) | | our way through the competĀ itive minefield of emerald science, much of John's contribuĀ tion to this...any other opinion. extraLapis English No. 2: Emerald The Most Valuable Beryl The Most Precious Gemstone...we ā¢ 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...Gloria & Gunther A 2001 Find of top-quality emerald crystals from La Pita at Maripi, Boyac |  | | Journal (issue) | | Branch: M. P. Gayton, F.G.A. South Yorkshire & District Branch: I. R. M. Lewis, F.G.A. Examiners: B. W...Idar-Oberstein, West Germany. The Zambian emerald deposits (Miku-Kafubu-deposits), which were rediscovered in...(Bank 1973, 1974; Campbell 1973, Kanis 1980). The emerald deposits were first discovered by Baker in 1931...importance. According to Kanis (1980), the first mine (Miku) was given up in 1972. In the neighbourhood,...further deposits south and south-west of Miku in the Kafubu region. The production of the mines, coming |  | ZachariĆ”Å”, J., Å½Ć”Äek, V., PudilovĆ”, M., MachoviÄ, V. (2005) Fluid inclusions and stable isotope study of quartz-tourmaline veins associated with beryl and emerald mineralization, Kafubu area, Zambia. Chemical Geology, 223 (1) 136-152 doi:10.1016/j.chemgeo.2004.12.023 | Journal (article/letter/editorial) | | of quartz-tourmaline veins associated with beryl and emerald mineralization, Kafubu area, Zambia J. ZachariaĢsĢ...Accepted 16 May 2005 Abstract The Kafubu Emerald Area in Zambia is an important producer of gemstone-quality...that rim numerous pegmatite dykes and epigenetic quartz-tourmaline veins in Mg-rich metabasites. Where...and free of emeralds. Three types of hydrothermal quartz-tourmaline mineralization were identified: banded...fluids. The earliest fluids (mostly trapped in the quartz, rarely in beryl) represent complex H2OāCO2āN2āCH4āNaClāCaCl2 |  | | Journal (issue) | | 18, Numbers 1-4 ABOUT THE COVER: This unusual quartz egg, measuring 3 in. x 5 in. (7.6 c m x 12.7 cm)...resting on a 363-ct aquamarine pedestal, and the quartz base sits on four 5-ct aquamarine cabochons. Photograph...and describes the wide range of methods used to mine th e corundum . Gemologically, the Th ai rubies...ident ify many of the inclusions. The trip into the mining region would have bee n very difficufl if not for...these, 85% to 90% come from the Chanthaburi-Trat district alone (Aranyakanon and Vichit, 1979). While the |  | 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 |  | | Journal (issue) | | rare polished pink diamonds from Australiaās Argyle mine that have been sold for 30 years through invitation-only...blue diamond discovered at the historic Cullinan mine in early 2014. 287 A Preliminary Study on the...News International Demantoid from Baluchistan province of Pakistan ā¢ New deposit of Ethiopian black opal...The photo on the cover shows diamonds from the Kao mine in Lesotho being prepared for tender. The 17.88...Botswanaās diamond industry, three-phase inclusions in emerald, HPHT synthetic diamonds, Myanmarās remarkable |  | | Book | | .^aU I i GEOLOGICAL MAP OF THE REPUBLIC OF ZAMBIA SIMPLIFIED ,J^ljTangonyiko LEGEND ā” 200 M^Iq"... In the same series A guide to the Insects of Zambia Elliot Pinhey and Ian Loe A guide to the National...DWoecraite of Zambia by GERALD COORAY, PhD, DIC, FGS Professor of Geology, University of Zambia and ANDREW...PhD Formerly Lecturer in Geology, University of Zambia colour illustrations by GOODFELLOW PHIRI Group...rocks Industrial minerals Outline of the Geology of Zambia 34 14 Radioactive minerals METALLIC MINERALS |  | | Journal (issue) | | to summarize the latest ideas on their origin. Quartz nodules from the Mendips have been given different...'diamonds' were subsequently correctly identified as quartz, but the controversy surrounding the nodules merely...I and 2). Some are composed of medium to large quartz crystals with an inner layer of much smaller grains...while others consist of fibrous quartz with or without prismatic quartz. Both types of nodules are found...found with internal voids or with cores of quartz, calcite or celestine. Recent work on the structures and |  | | Journal (issue) | | SPECIAL ISSUE December 2015 WORLD EMERALD UPDATE Highlights of Bogota Symposium Colombia opened its...worldās 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 countryās emerald-related bodies and...challenges and opportunities faced by the worldās emerald industry, including resource management, manufacturing |  | | Journal (issue) | | material known as " M a x i x e Beryl" from the Maxixe Mine (Minas GĆ©rais, Brazil). This particular specimen...claimed it as a new mineral in 1933. T h e Maxixe Mine was then a recent discovery. T h e figures regarding...Recently, because of statements by scientists and mine-owners, we are wording our reports in a m a n n...Beryl mine also told me that no one (presumably in Brazil) knew the whereabouts of the Maxixe Mine. Following...INTRODUCTION About 1917 blue beryl was found in the Maxixe mine in Minas Gerais, Brazil, which h a d the following |  | | Journal (issue) | | Franks, B.Sc., Ph.D., F.G.A. South Yorkshire & District Branch: J. I. Platts, F.G.A. Examiners: A. J....A ugust, 1983. ] 404 J.Gemm., 1985, XIX, 5 EMERALD AND GREEN BERYL FROM BUCHA, MOHMAND AGENCY, NW...Deep bluey green emerald and light green beryl occur sporadically in talccarbonate-quartz rocks near Bucha...of Be is not clear. The beryl and emerald have high iron, the emerald also having higher MgO content and...northern and north-western Pakistan. These include emerald, ruby, red spinel, sapphire, pink and yellow topaz |  | | 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...years, especially with the development of ruby mining in Mozambique. This contribution outlines GIAās... 637 614 Geographic Origin Determination of Emerald Sudarat Saeseaw, Nathan D. Renfro, Aaron C. Palke...Caplan. The back cover shows emeralds from the Chivor mine in Colombia (3.90 ct faceted stone and 2.35 cm crystal) |  | | Journal (issue) | | (lithium tourmaline) was made at the Dunton gem mine, Newry, Maine, U.S.A. The narrative of discovery...England "watermelon" tourmaline had come from this mine in years gone by, although most of it was not facet-grade...after two years of semi-continuous operation of the mine. T h e elbaite is being mined from collapsed gem...the courtesy of M r Dean McCrillis, of Plumbago Mining Corporation, Rumford, Maine, the author was permitted...McCrillis and M r J o h n Marshall, of Plumbago Mining Corporation, for their invaluable 367 assistance |  | | Journal (article/letter/editorial) | | 1529-1541 (2006) THE EMERALD- AND SPODUMENE-BEARING QUARTZ VEINS OF THE RIST EMERALD MINE, HIDDENITE, NORTH...and mineral compositions of the emerald occurrence at the Rist mine, Hiddenite, North Carolina, in order...and to examine the possible relationship between emerald and spodumene mineralization and granitic pegmatites...Beryl and chromian spodumene occur entirely within quartz veins and in open cavities that occupy brittle...assemblages are calcite, amethystine quartz, spodumene and emerald. The early stage of vein development |  | | Journal (issue) | | and dolomite as the major constituents besides quartz (Figure 5). 65 Figure 3: A mined karstic channel...located on the gentle Figure 4: Complicated gem mining in a karstic channel in marble. J. Gemm., 2000...worn crystal faces or rounded surfaces and the quartz pebbles, which are also present occasionally in...of the tourmaline. In addition to Figure 6: Gem mining activities in a shallow gem pit. Occurrences of...sediments and their abundance as a guide to identify mining sites. Figure 7: Gem-bearing sediments being sieved |  | | Journal (issue) | | Franks, B.Sc., Ph.D., F.G.A. South Yorkshire & District Branch: J. L Platts, F.G.A. Examiners: E. A. Jobbins...though, these imitations are made to resemble emerald, in particular the type of mica-coated rough that...either very poor quality emerald, beryl or glass. The poor quality emerald or beryl varieties may be...gem specimen. A few years ago I was offered an emerald specimen which I considered of exceptional beauty...there may remember me as 'the Man with the Big Emerald'. The size of the stone is exceptional: its dimensions |  | | Report (issue) | | Discovery Stoppaniite Fabio Tamagnini Page 40 Emerald and Aquamarine in Canada Lee A. Groat Page 22...studies in 1811, during A.G. Werner's time at the Mining Academy in Freiberg, Saxony (Germany). From 1826...miners. He was also the gemstone inspector for the mining authority. Breithaupt's legacy is 500 publications...descriptions. T he above is a postcard of the School of Mining in Feiberg, Saxony printed for the 1991 Breithaupt...morganite, emerald, goshenite, and heliodor. Known for millennia, the beryl varieties emerald and aquamarine |  | Marshall, D. D., Groat, L. A., Falck, H., Giuliani, G., Neufeld, H. (2004) THE LENED EMERALD PROSPECT, NORTHWEST TERRITORIES, CANADA: INSIGHTS FROM FLUID INCLUSIONS AND STABLE ISOTOPES, WITH IMPLICATONS FOR NORTHERN CORDILLERAN EMERALD. The Canadian Mineralogist, 42 (5) 1523-1539 doi:10.2113/gscanmin.42.5.1523 | Journal (article/letter/editorial) | | Mineralogist Vol. 42, pp. 1523-1539 (2004) THE LENED EMERALD PROSPECT, NORTHWEST TERRITORIES, CANADA: INSIGHTS...ISOTOPES, WITH IMPLICATONS FOR NORTHERN CORDILLERAN EMERALD DANIEL D. MARSHALLĀ§ Department of Earth Sciences...Columbia V6T 1Z4, Canada ABSTRACT Vanadium-rich emerald at the Lened occurrence, Northwest Territories...fractured garnetādiopside skarn. The emerald is generally found in quartzācarbonate veins with mm-scale alteration...of the Devonian Earn Group. Skarn and subsequent quartzācarbonate veins are the result of contact metamorphism |
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