 | | Journal (article/letter/editorial) | | characteristics of emeralds from the Leydsdorp area, South Africa J.E. Lum, K.S. Viljoen and B. Cairncross...Johannesburg, P.O. Box 524, Auckland Park, 2006, South Africa. e-mail: jullieta.lum@gmail.com; fanusv@uj.ac...Society of South Africa Abstract The worldâs oldest emerald deposit occurs in the Gravelotte-Leydsdorp area...area of the Limpopo Province of South Africa. Emeralds have been mined from the main emerald working, the...characteristics of 57 low-quality emeralds from the Leydsdorp area, Murchison Greenstone Belt. The emeralds |  | | Book (edition) | | Southern Africa a Collectorâs Guide â Rocks, Minerals and Gemstones of Southern Africa & â - ... T ~ '' .rats en&nes L of Southern Africa A Collectorâs Guide - Struik Publishers (an operating...suggestions and advice. Authorâs Preface Southern Africa has much to offer the amateur geologist, whatever...best plan is to take local advice wherever you are. 9 In small places try the local police station first...usually helpful and will know it there are any local gem clubs and how to get in touch with them. There |  | | Report (issue) | | Australia Dermot Henry Page 78 Beryl from Southern Africa Bruce Cairncross Page 84 Brazilian Beryl Luiz Menezes...page 22). These include aquamarine, red beryl, morganite, emerald, goshenite, and heliodor. Known for millennia...Euhedral beryl, including goshenite, aquamarine and morganite, can be found adjacent to the core margin of the...lengths of 3 meters, as have those at Tin Mountain, South Dakota. 4m: Beryl crystals have reached 4 meters...weighed almost 24 tons. 8.7m: In Jackalswater, South Africa, the largest beryl crystal recorded was 8.7 |  | Aurisicchio, Carlo, Conte, Aida M., Medeghini, Laura, Ottolini, Luisa, De Vito, Caterina (2018) Major and trace element geochemistry of emerald from several deposits: Implications for genetic models and classification schemes. Ore Geology Reviews, 94. 351-366 doi:10.1016/j.oregeorev.2018.02.001 | Journal (article/letter/editorial) | | listed as follows. 2.1 Type-1 deposits The emerald district of Poona (Australia), related to felsic intrusions...micaceous veinlets. The genesis of Malyshevsk emerald district (in the eastern slope of the Middle Urals) (Grundmann...(BeO) in metasomatic veins (Pekov, 1998). In the district of Mananjary deposit (Madagascar) emerald crystals...Light (LE: Li, B, Na), Large Ion Lithofile (LILE: Rb, Ba, K, Sr, Cs), High Field Strength (HFSE: Th, U, Nb...depleted in Sr, Ba and B. LE and LILE display a wide range of concentration, excluding Ba and Sr. In more |  | Beurlen, H., Thomas, R., Melgarejo, J. C., Da Silva, J. M. R., Rhede, D., Soares, D. R., Da Silva, M. R. R. (2013) Chrysoberyl-sillimanite association from the Roncadeira pegmatite, Borborema Province, Brazil: implications for gemstone exploration. Journal of GEOsciences, 58 (2) 79-90 | Journal (article/letter/editorial) | | interaction of similar pegmatites known to occur south and north of Roncadeira with metabasic rock intercalations...than 600 °C. Chrysoberyl is often related to a local enrichment of the mineral-forming melts or solutions...relations are presented. Besides implications on the local pegmatite-forming processes, the recognition of...Sn B A 70 Sn A B Roncadeira 400 m Fig. 2 Local geological sketch of the RoncadeiraâCorredor pegmatite...{e.g. by Moore and Ito (1973) from Black Hills, South Dakota, USA, by Gonzales del TĂĄnago (1991) from |  | | Journal (article/letter/editorial) | | About x777. PREHNITE. Col. Preh found it in South Africa. â˘785. EUCLASE. Introduced into Europe from...Found in U.S. A. x876. TIGER EYE. Found in South Africa. About x879. ENSTATITE. x877. HIDDENITE. ...x9oâ˘. x9o3. x9o7. MORGANITE. KUNZITE. BENITOITE. Gem variety found in South Africa. Found in U.S. Found...not inclined to look upon the Indian of North and South America as a mineralogist and a prospector; he used...fairly completefor North and Central America but in South America, outside of Peru, could doubtless be appreciablyextended |  | | Book (edition) | | OF OF SOUTH AFRICA MINES GEOLOGICAL SURVEY MINERAL RESOURCES OF REPUBLIC OF THE SOUTH AFRICA...Second World War, and partly as a result of it, South Africa experienced vast industrial expansion. This...official âhandbook on the mineral resources of South Africa, it has become necessary to revise, or rather...great diversity and magnitude of South African mineral deposits and local mining operations, the Economic...Chamber of Mines of South Africa with Mr G. H. Grange as co-ordinator, and the South, African mining industry; |  | | Report (issue) | | France Colombia: Gonzalo Jara of Bogota, Colombia Africa: Federico Pezzotta from the Natural History Museum...Giuliani Africa: Egypt, Nigeria, Tanzania, . . . . . . . . .52 Mozambique, Zambia, Zimbabwe, South Africa...before Columbus, emeralds were mined and traded in South America, which enjoys its own emerald tradition...aquamarine, yellow beryl is heliodor, pink beryl is morganite, colorless beryl is goshenite and red beryl is...zone in the Muzo Coscuez-Pefias Blancas mining district. They are disseminated in black shales or albitized |  | | Journal (issue) | | Jackson, FGA G.H. Jones, B.Sc, Ph.D., FGA H. Levy, M.Sc,BA, FGA J. Kessler G. Monnickendam L. Music J.B. Nelson...to Constantinople as a present to the wife of a local Turkish pasha. She feared for his safety and sent...thaumasite from the Black Rock Mine, South South Mrica Africa Ulrich Henn, Markus Redmann and Hermann...thaumasite crystals of have been discovered in South Africa. The locality is the Black Rock Mine in the... Occurrence: Republic Republic of of South South Africa. Africa. Canadian Canadian Mineralogist, Mineralogist |  | | Journal (issue) | | Gwhemistry, W w s i I y d Cape Town, Randebasch, Sooth Africa, DE Lwihscin k prc fsssor h It)@ Deparfment of...diamonds from the Finsch and Kimberley pipes in South Africa; those from the Premier mine appeared to be...diamond ( I mm across) from the Finsch mine, South Africa, was dated by geochronological methods to be...on diamonds from several other pipes in southern Africa and Australia. (For a discussion of some earlier...Kirnberley, South Africa Finsch, South Africa Finsch, South Africa Premier, South Africa Argyle, Australiaa |  | | Book | | the Witwatersrand region, near Johannesburg in South Mrica, which descend to a depth of almost 3500 m...Other important deposits are found in the Cobalt district of Ontario, Canada, as well as in Mexico and Bolivia...gold was discovered in Australia, first in New South Wales and shortly thereafter in Victoria. One nugget...important deposit is Witwatersrand, Johannesburg, South Africa, which is a fossilized placer of quartz conglomerates...Because of the difficulty of cutting these stones the South African cuUers refer to them as Duive/steene (devil's |  | | Book | | the ashes Tanzanite: blue patrician from black africa Topaz: chalice of golden crystal Tourmaline: alpha...bi-color tourmaline crystals intergrown with orange morganite and white quartz from the pegmatite of Queen Mine...(e. g., emerald formation in Brazil, Russia, and Africa or sapphire formation on Madagascar). The gemstones...millions of years of continuous erosion (e.g., in South Africa, Brazil, Myanmar, India, Sri Lanka, and Mada-...Gondwanaland covered todayâs continents of South America, Africa, and Australia together with the Indian |  | | Report (issue) | | Kingdom . . . ... . .. (1922) Part II. Britisl1 Africa . .. . ,. . .. (1922) Par~ III. Britisl1 America...and New Zealand .. . (1922J Part VI. Europe and Africa (I!"oreign) ~ .. . (1922) Part VII. Foreign Arueriea.... ' ⢠' ' ' ⢠I ' IMPERIAL INS'TITUTE SOUTH KENSINGTON, S.W. 7 The Imperial Institute was e...Rhodesia â˘â˘â˘ â˘â˘ ⢠South~West Africa Tenitory Tanganyika Territory â˘â˘â˘ Union of South Africa ..Canada â˘â˘â˘ â˘â˘â˘...Australia â˘â˘â˘ â˘â˘â˘ â˘â˘â˘ New Zealand ⢠⢠⢠â˘â˘â˘ â˘â˘ ⢠South Georgia (Antarctica) ⢠⢠⢠⢠I ⌠⢠⢠⢠â˘â˘ |  | | Book (edition) | | Albert Museum, and the Imperial Institute, all at South Kensington. Many of the examples referred to in...the British Museum of Natural History, also at South Kensington. NOTE TO SECOND EDITION A few minor...of the Kimberley Diamond Mine at Kimberley, South Africa - IV. {a) Crystal of Diamond in the â Blue...diamonds were erupted into the volcanic pipes of South Africa, although it is evident that the diamonds themselves...tons, and one of spodumene weighing 90 tons in South Dakota, are records for the size of crystals; but |  | | Book | | covering diamondiferous gravels on coast of South West Africa II ILLUSTRATIONS 4. Rough diamonds with...page 40 Location of diamond mines in Southern Africa 5(1). Various cabochon-cnts 44 50 5 (2). Table-cut...Pulsford, of the Institute of Geological Sciences in South Kensington, who were responsible for the preparation... ACKNOWLEDGEMENTS British Museum (Natural History) in South Kensingtonâa collection which is reputed to be the...mountain, sometimes with tragic destruction of local fields and villages. The molten fluid cools quickly |  | | Journal (issue) | | Frederick âLinâ Sutherland Port Macquarie, New South Wales, Australia Jeffrey E. Post Smithsonian Institution...samples from Austria, Brazil, China, Egypt, India, South Africa and Ukraine. A photo of a roundish zircon inclusion...of zircon inclusions in emeralds from Leydsdorp, South Africa, and from Ukraine were shown by Lum et...characteristics of emeralds from the Leydsdorp area, South Africa. South African Journal of Geology, 119(2)...a private mining area of Sri Lankaâs Ratnapura District, near Neelagama (âvillage of blue sapphiresâ) |  | | Journal (article/letter/editorial) | | Ca(UO2)2(PO4)2¡12(H2O) Ca2MgAl2(BO3)Si4O12(OH) Cu3(CO3)2(OH)2 ZrO2 (Ba,Sr)(Nb,Ti)2(O,OH)7 BaSO4 2Ca(SO4)¡H2O (Ce,La)(CO3)F...5)O10(OH)2¡n(H2O) Cu7Hg6 BaTiSi3O9 Ag8Sb0.5As0.5Te2S3 Ca,Mg,Mn7(Ba,Sr)6(CO3)13 Be2(BO3)(OH,F)¡(H2O) Fe2Al(Si,Al)O5(OH)4...Bertrandite Beryl, aquamarine, heliodor, goshenite, morganite, rosterite, bixbite, emerald Berzelianite Bicchulite...CaCO3 Na6Ca2Al6Si6O24(CO3)2 Ag8SnS6 (Ca,Na)(Sr,Ce,Ba)(CO3)2 Tl2S KMgCl3¡6 (H2O) K2(UO2)2(VO4)2¡3H2O Co2CuS4...Pb(UO2)4O3(OH)4¡4(H2O) Zn-rich rhodonite (Zn,Al)3(Si,Al)2O5(OH)4 (Ba,P)(UO2)2(VO4)2¡5H2) Pb5Sn3Sb2S14 Ca5(PO4)2.5(CO3)0 | | | Journal (article/letter/editorial) | | Ca(UO2)2(PO4)2¡12(H2O) Ca2MgAl2(BO3)Si4O12(OH) Cu3(CO3)2(OH)2 ZrO2 (Ba,Sr)(Nb,Ti)2(O,OH)7 BaSO4 2Ca(SO4)¡H2O (Ce,La)(CO3)F...5)O10(OH)2¡n(H2O) Cu7Hg6 BaTiSi3O9 Ag8Sb0.5As0.5Te2S3 Ca,Mg,Mn7(Ba,Sr)6(CO3)13 Be2(BO3)(OH,F)¡(H2O) Fe2Al(Si,Al)O5(OH)4...Bertrandite Beryl, aquamarine, heliodor, goshenite, morganite, rosterite, bixbite, emerald Berzelianite Bicchulite...CaCO3 Na6Ca2Al6Si6O24(CO3)2 Ag8SnS6 (Ca,Na)(Sr,Ce,Ba)(CO3)2 Tl2S KMgCl3¡6 (H2O) K2(UO2)2(VO4)2¡3H2O Co2CuS4...Pb(UO2)4O3(OH)4¡4(H2O) Zn-rich rhodonite (Zn,Al)3(Si,Al)2O5(OH)4 (Ba,P)(UO2)2(VO4)2¡5H2) Pb5Sn3Sb2S14 Ca5(PO4)2.5(CO3)0 |  | | Journal (issue) | | Kettle North East â Mark W. Houghton South East â Veronica Wetten South West â Richard M. Slater Copyright...deposit is located ~3 km from An PhĂş in the L᝼c YĂŞn District of YĂŞn BĂĄi Province. On separate buying trips...mining this material since 2008 in Milford County, south-central Utah, but it has yet to be gemmologically...commonly offered as collectorsâ samples in the local market. 284 Occasionally quite large matrix specimens...corundum crystals was shown to participants by a local miner. The corundum crystals in that specimen ranged |  | | Book | | Bahrain Greece Ian Graham The University of New South Wales Australia Editorial OfďŹce MDPI St. Alban-Anlage...Rocks within Meta-UltramaďŹtes of Ilmen Mountains, South Urals of Russia: Evidence from Mineralogy, Geochemistry...Hofmeister Corundum Anorthosites-Kyshtymites from the South Urals, Russia: A Combined Mineralogical, Geochemical...Earth and Environmental Sciences, University of New South Wales Sydney, Sydney, NSW, Australia, and a Distinguished...Earth and Environmental Sciences, University of New South Wales, Sydney, NSW 2052, Australia; i.graham@unsw |  | | Book (volume) | | LONDON: AFRICA : & CO. (PUBLISHERS) LTD. 88 Kingsway, W.C.2 BUTTERWORTH & CO. (AFRICA) LTD. DURBAN...emerald, aquamarine and the blushing rose-coloured morganite are all colour varieties of the species beryl...the individual minerals crystallize out around local centres. Some minerals do so at an early stage and...gem and lithiumbearing pegmatites of the Pala district of San Diego County, California, from which much...are used only for the âpipeâ diamond deposits of Africa. Other gems are not mined in depth but are won |  | | Journal (issue) | | more apt to be aware of how the curators at their local museums are disporting themselves at shows. Are...take more of a proprietary interest in what their local museum is doing. Curators, believe it or not, can...it is this one. So, come on collectors! Let your local curator know that you are watching, but also that...(Otherwise By Chance or By Appointment) Three miles south of Bancroft, Ontario, on the W est side of Hwy....from Monte Somma, hauyne from Mendig in the Eifel District, and nosean from the Alban Hills shown in Figures |  | | Book (edition) | | methods are utilized to extract fine placer gold in South America. At the ancient mines of Cassandra, Greece...occurrence of gold in quartz veins in the Krissites district, Greece, later described by Diodorus. Theophrastus...neighboring . . . eruptions of igneous rocks. The local reaction of the igneous-fluid interior of the earth...He found that the sphalerite of the Tri-State District, for example, had been Liquid Inclusions. 40...forced upward, and then consolidate. The melting is local; no continuous molten layer underÂŹ lies the solid |  | | Book (edition) | | Sinai Peninsula for turquois, and into the Sudan. Ba 11 identifies as the first econo1nic geologist the...neighboring . .. eruptions of igneous rocks. T he local reaction of the igneous-fluid interior of the earth...H e found that the sphalerite of the Tri-State District, for example, had been formed at temperatures...upvvard, a nd then consolidate. The melting is local; no continuous molten layer underlies the solid...o in part enter in, particularly in the case of local or unusual bodie of rock or minerals. Several of |  | | Journal (issue) | | prevailing uncertainty in the Middle East and northern Africa, Dhamani said it presented an opportunity for âexponential...competition from new players, particularly China. While South Sea and Tahitian cultured pearls have suffered from...manufacturing facilities. âThey thought that as long as the local laws were obeyed, that was sufficient,â he said...(top), and an alluvial diamond from Namaqualand, South Africa (bottom). Photomicrographs by L. Nasdala. the...Greyson, and Kitwalo ruby deposits in the Mahenge district). The mafic dikes and the marbles were previously |
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