| Those from Ethiopia, Kazakhstan, Madagascar, Peru, Tanzania and Turkey all proved to be opal-CT. Of the three...as Ethiopia [5], Madagascar [6], Indonesia [7], Tanzania [8] and Turkey [9], have appeared on the market...collected in the 100 to 1500 wavenumber (cm−1 ) region, using a XplorRA Horiba Scientific Confocal Raman...400–4000 cm−1 ). Spectra in the low wavenumber region were recorded at the Australian Synchrotron’s THz-Far...Namibia Peru Spain Tanzania Tanzania Khorixas district Acari Mazarron, Murcia Kigoma, Region Haneti G NEW29 |
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Cairncross, Bruce (2019) Minerals & Gemstones of East Africa - Burundi, Kenya, Rwanda, Tanzania and Uganda. Penguin Random House. |
Book |
| GEMSTONES of East Africa Burundi, Kenya, Rwanda, Tanzania and Uganda Bruce Cairncross Published by Struik...resources 12 Burundi 13 Kenya 14 Rwanda 16 Tanzania 17 Uganda 20 Gemological properties 21 A to...through Tanzania, Kenya, Ethiopia and into the Sudan - has blessed East Africa, Kenya and Tanzania, with...starting in what was then Tanganyika ( now mainland Tanzania) and then progressing to Kenya - I am proud to...countries are among the finest in the world. The region and its gems are particularly dear to my family |
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(2020) The Journal of Gemmology Vol. 37 (1) Gem-A |
Journal (issue) |
| Afghanistan | Olshanskyite from Japan |
Yellow Opal from Tanzania |
Titanite (Sphene) Inclusions in Ruby Identified...and China, followed by Japan. India and the Gulf region saw slight declines, while the rest of the world...booth of Emmanuel Thoreux (White River Gems, Alsace region, France), the author noticed a few cabochons of...Kasula District in western Tanzania. Photo by J. Štubňa. Yellow Opal from Tanzania Opal (SiO2 • nH2O) is...reportedly from the Kasula District in the Kigoma region of western Tanzania, which is bordered on the north-west |
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Voudouris, Panagiotis, Karampelas, Stefanos, Melfos, Vasilios, Graham, Ian - Eds. (2020) Mineralogy and Geochemistry of Gems. MDPI. doi:10.3390/books978-3-03928-077-3 |
Book |
| Element Characteristics of Danburite from Mexico, Tanzania, and Vietnam Reprinted from: Minerals 2018, 8...Enigmatic Alluvial Sapphires from the Orosmayo Region, Jujuy Province, Northwest Argentina: Insights...as a late magmatic accessory phase from Mexico, Tanzania, and Vietnam. Differences in the rare earth elements...on another occurrence of sapphires in the same region of the South Urals occurring in anorthosites (kyshtymites)...evolution of alluvial sapphires from the Orosmayo region (Jujuy Province, NW Argentina) and importantly |
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