| 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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Huong, Le, Otter, Laura, Förster, Michael, Hauzenberger, Christoph, Krenn, Kurt, Alard, Olivier, Macholdt, Dorothea, Weis, Ulrike, Stoll, Brigitte, Jochum, Klaus (2018) Femtosecond Laser Ablation-ICP-Mass Spectrometry and CHNS Elemental Analyzer Reveal Trace Element Characteristics of Danburite from Mexico, Tanzania, and Vietnam. Minerals, 8 (6) 234 doi:10.3390/min8060234 |
Journal (article/letter/editorial) |
| Reveal Trace Element Characteristics of Danburite from Mexico, Tanzania, and Vietnam Le Thi-Thu Huong 1, *...Published: 29 May 2018 Abstract: Danburite is a calcium borosilicate that forms within the...plasma (ICP)-mass spectrometry for danburite from Mexico, Tanzania, and Vietnam. The Tanzanian and Vietnamese...Our results imply that the trace elements of danburite reflect different involvement of metacarbonates...pegmatites among the different locations. Keywords: danburite; trace elements; REE; femtosecond LA-ICP-MS; CHNS |
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Simmons, W. B., Pezzotta, F., Shigley, J. E., Beurlen, H. (2012) Granitic Pegmatites as Sources of Colored Gemstones. Elements, 8 (4) 281-287 doi:10.2113/gselements.8.4.281 |
Journal (article/letter/editorial) |
| in Africa (Congo, Mozambique, Namibia, Nigeria, Tanzania, Zambia) and Asia (Afghanistan, Pakistan) (TABLE...pegmatite core zone or in the core margin, the region around the core. Typically, only parts of these...nepheline syenite) contain gem minerals, such as microcline (amazonite), sodalite, and zircon. GEM MINERALS...localities in the Fianarantsoa region and at Anjanabonoina (Betafo, Antananarivo region) in Madagascar (Pezzotta...spodumene, and tourmaline (FIGS . 2, 5). The Himalaya Mine in Mesa Grande, California, USA (Fisher 2002) has |
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(2017) The Journal of Gemmology Vol. 35 (5) Gem-A |
Journal (issue) |
| cabochons| Ceruleite from Chile |
Yellow danburite from Namalulu, Tanzania |
Emerald from Ethiopia |
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Cook, Robert B. (2013) Connoisseur's Choice: Liddicoatite, Fluor-liddicoatite, and Liddicoatitic Tourmalines, Anjanabonoina District, Madagascar. Rocks & Minerals, 88 (4) 346-353 doi:10.1080/00357529.2013.796756 |
Journal (article/letter/editorial) |
| occurrence lies in the highlands of the Vakinankaratra region, Antananarivo Province, near Antsirabe and south...pegmatites associated with beryl, spodumene, danburite, spessartine, feldspars, micas, magnetite, and...the Ikalamavony pegmatite field in the Matsiatra region. It is also reported from the Anjahamiary pegmatite...district, Tulear Province, in the Fort Dauphin region. On the African continent, liddicaotite has been...is liddicoatite, occur at Sanga Sanga, Morogoro region, Tanzania. Liddicoatite is reported from widely |
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(2008, July) Gems & Gemology Vol. 44 (2) Gemological Institute of America |
Journal (issue) |
| phosphorescence in diamond • Almandinespessartine from Tanzania • “Red andesine” • Orange beryl from India • Clinochlore...Clinochlore from Turkey • Yellow danburite from Tanzania • Lawsonite from California • Paragonite from...occasionally recovered by hobbyist collectors from the mine dumps. D uring the late 19th and early 20th centuries...a Byrud emerald in an antique jewelry piece. The mine is located on the shore of Lake Mjøsa, near Minnesund...assets sold to the Cornish Development Co. Ltd. The mine was subsequently abandoned in 1909 (Nordrum and |
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(1996) World of Stones 9. "Plus" Ltd. Publishing |
Journal (issue) |
| (morganite), wollastonite, danburite, datolite, quartz, calcite, corundum, microcline, plagioclase, spodumene...calcite; crystal aggregates 15 cm in size. Vеrklinii Mine, Dabugorsk, Pпmorskii Krai, Russia. Specimen: V...(samples of these crystals from kimberlites of this region were kindly submitted to the author by Yana Bao...reveal the rubies. Our field crew worked in this region in 1986 and suggested that the geologists use an...minerals. Photoluminescence o f plagioclase and microcline caused by Еи2+ impurity is very rare. Plagiociase |
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Bailey, David G., Lupulescu, Marian V., Darling, Robert S., Singer, Jared W., Chamberlain, Steven C. (2019) A Review of Boron-Bearing Minerals (Excluding Tourmaline) in the Adirondack Region of New York State. Minerals, 9 (10) 644 doi:10.3390/min9100644 |
Journal (article/letter/editorial) |
| Minerals (Excluding Tourmaline) in the Adirondack Region of New York State David G. Bailey 1, *, Marian...metamorphic terranes like that of the Adirondack region of northern New York State, uncommon rock compositions...Mountains; Grenville Province; boron minerals; danburite; datolite; dumortierite; grandidierite; harkerite;...history. Spectacular, well-formed crystals of danburite and tourmaline from northern New York have been...have been identified throughout the Adirondack region of upstate New York. These minerals range from |
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(1999, January) Mineral News Vol. 15 (1) L. R. Ream Publishing |
Journal (issue) |
| Recent Find of Kunzite at the Historic Katerina Mine Pala District, San Diego County, California Jesse...Introduction - The Katerina Mine (also known as the Katrina or the Catherina Mine) is located on a Li-Be-Phosphate...the first decade of the 20th centu, the Katerina Mine was one of the original sources of kunte, a previously...crystals should have been the Siglo XX Mine (20th Century Mine). I regret the error, but made it in good...published in the July, 1998 Mineral News issue: Margnac Mine, Compreignac, Haute-Vienne, France. The first specimen |
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(1993) Alphabetical Index. Mineralogical Magazine, 57 (389) 767-773 doi:10.1180/minmag.1993.057.389.31 |
Journal (article/letter/editorial) |
| Altered metacarbonatite, supposed s6vite from Tanzania, 93 Ammonium, -content in granites from Donegal...polycrystalline pyrite ores from, 2 9 ; - - , Woods Mine, namansilite occurrences from, 533 Austroalpine...crystal growth rates, 337 Cosalite, from Dunjeon gold mine, Korea, 515 Cotectic, textures in a St, REE-rich...M., 45 Dalyite, ferrian high sanidine in, 289 Danburite, crystal structure of KB Si308 isostructural with...540 ENGLAND, Cornwall, sodium-zippeite from Geevor Mine, 352;--, Cumbria, brianyoungite from, 665;--, first |
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(2002) Tourmaline. extraLapis English 3. Lapis International LLC |
Report (issue) |
| 5371-2-7 Printed in Germany Above: Schor! and microcline from Pakistan's world famous Gilgit area. The...elbaite crystals with lepidolite from the Golconda Mine in Minas Gerais, Brazil by Eberhard Equit, 1993...circa 1910 view of the old mine portal on the north side of the Himalaya Mine in San Diego County, CA....the Sludyanka complex in the southern Lake Baikal region of Russia. Six New Species Today, this team has...An 11 cm tall elbaite group from the Pederneira Mine in Minas Gerais, Brazil. The bottom of the group |
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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 |
| Reveal Trace Element Characteristics of Danburite from Mexico, Tanzania, and Vietnam Reprinted from: Minerals...Enigmatic Alluvial Sapphires from the Orosmayo Region, Jujuy Province, Northwest Argentina: Insights...comparison of the trace element geochemistry of danburite, a gem mineral commonly formed within transition...Mexico, Tanzania, and Vietnam. Differences in the rare earth elements (REE) concentrations of danburite from...on another occurrence of sapphires in the same region of the South Urals occurring in anorthosites (kyshtymites) |
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Petrov, Alfredo, Hyrsl, Jaroslav (2008) Mineralogy of Alto Chapare: Cochabamba Department, Bolivia. Rocks & Minerals, 83 (2) 114-125 doi:10.3200/rmin.83.2.114-125 |
Journal (article/letter/editorial) |
| mines, it certainly does not suit the Alto Chapare region, a hot, steamy rain forest on the lower eastern...Department, Bolivia, and specializes in minerals of that region. He is a consulting editor of Rocks & Minerals...Alfredo Petrov with local collectors digging for danburite. Jaroslav Hyrsl photo. Figure 4 (top). Locotal...economically successful product of the Alto Chapare region. Jaroslav Hyrsl photo. Volume 83, March/April 2008...crystals, abundant “textbook” doubly terminated danburite crystals, and interesting specimens of dolomite |
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(1978) Alphabetical Index. Mineralogical Magazine, 42 (324) 573-582 doi:10.1180/minmag.1978.042.324.27 |
Journal (article/letter/editorial) |
| St. Just aureole, Cornwall, 427 Alice Mary copper mine, W. Australia, lavendulan, 369 Alkali feldspar,...Ethiopia and Italy, 63; and see adularia, albite, microcline, orthoclase, valencianite Alkaline-earths and...breakdown product of staurolite from Donegal, 237 Auburn mine, Michigan, stilpnomelane, 36I and M37 Augite, Turkey...anal., opt., sp. gr., X-ray, I79 Bali Low copper mine, Capricorn Range, W. Australia, lavendulan, 369... Larne, Co. Antrim, tobermorite, 229 Bambollita mine, Moctezuma, Sonora, Mexico, tlapallite, 183 Ban |
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Hurrell, Karen, Johnson, Mary L. (2008) Gemstones - A complete color reference for precious and semiprecious stones of the world. Ivy Press. |
Book |
| are still mined by hand. The easiest gemstone to mine with automated processes is the diamond, which is...are extremely scarce even in the richest ore, so a mine may require an investment of billions just to determine...sharp wedges; 14/15 examples of these include microcline and axinite. ‘The shapes of crystals What...refractive index is measured at 589 nm, in the yellow region of the spectrum). Dispersion measures the difference...collectors. The best Finnish gems are found in a copper mine in Outokumpu. Properties and characteristics: The |
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Bariand, Pierre (1979) The wonderful world of Precious Stones in their natural state. Abbey Library. |
Book |
| Gerais, Brazil (4.2 inches) B Tourmaline, Queen Mine, San Diego County, California (8 inches) C Garnet.... . 50 Kyanite .................. . 31 Danburite ................ 14 Lazurite ................jewelry. A Ruby, Saul Mine, Tsavo Park, Kenya (0.8 inch) 8 Ruby, Longido, Tanzania (2.4 inches) A 22...from Chinese writings of the 5th century that this region was already famous then. Marco Polo visited it...granites which are, nonetheless, abundant in the region. It forms masses which may be as much as three |
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Jannuzzi, Ronald Everett (1972) The Mineral Localities of Connecticut and Southeastern New York - With Descriptive Field Mineralogy for over 250 Species (2nd ed.) The Mineralogical Press. |
Book (edition) |
| the Principal Localities in the Middlesex County Region in Connecticut Unclassified Material Page VI 1...APPENDIX B Maps of the Interior of the Roxbury Iron Mine, Mine Hill, Roxbury, Connecticut . . . Maps and Directions...the Mineral Localities in the Middlesex County Region in Connecticut .... Additional Locality Information...Foster Iron Mine................... Economic Geology: Description of the Tilly Foster Mine..............Tilly Foster Mine -1972 ........................ Brief Summary of the Tilly Foster Mine . . The Branchville |
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Chiarenzelli, Jeffrey, Lupulescu, Marian, Robinson, George, Bailey, David, Singer, Jared (2019) Age and Origin of Silicocarbonate Pegmatites of the Adirondack Region. Minerals, 9 (9) 508 doi:10.3390/min9090508 |
Journal (article/letter/editorial) |
| of Silicocarbonate Pegmatites of the Adirondack Region Jeffrey Chiarenzelli 1, *, Marian Lupulescu 2 ...apatite, perthitic microcline, phlogopite, zircon, tourmaline, titanite, danburite, uraninite, sulfides...and many other minerals. Across the Adirondack Region, individual exposures are of limited aerial extent...constraints they offer on the tectonic evolution of the region [2,3]. These occurrences are characterized by their...zircon, titanite, K-feldspar (primarily perthitic microcline), quartz, tourmaline, and mica, and various sulfide |
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Cook, Robert B. (2003) Connoisseur's: Danburite,Charcas, San Luis Potosí, Mexico. Rocks & Minerals, 78 (6) 400-403 doi:10.1080/00357529.2003.9926754 |
Journal (article/letter/editorial) |
| Auburn, Alabama 36849-5305 CONNOISSEUR’S ----- Danburite Downloaded by [University of Central Florida]...occur as large, well-crystallized specimens. Danburite is one such mineral, having been named for Danbury...mines at Charcas, San Luis Potosi, Mexico. Two danburite specimens from this prolific locality have been...issue’s Connoisseur’s Choice (figs. 1 and 2). Danburite is best known in chisel-shaped, transparent to...measured density that ranges from 2.93 to 3.02. Danburite crystallizes in the orthorhombic system (2/m 2/m |
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Chamberlain, Steven C., Lupulescu, Marian V., Bailey, David G. (2015) The Classic Danburite Occurrence Near Russell, St. Lawrence County, New York. Rocks & Minerals, 90 (3) 212-223 doi:10.1080/00357529.2015.1012953 |
Journal (article/letter/editorial) |
| Chamberlain of specimens in his collection Classic Danburite O CCURRENCE Downloaded by [University of Nebraska...New York 13323 dbailey@hamilton.edu Figure 1. Danburite crystals from the original occurrence, probably...Russell danburite locality. Note the access road south from Dana Hill Road. T HE DANBURITE OCCURRENCE...United States. After the original discovery of danburite in Danbury, Connecticut, the Russell locality...(Brush and Dana 1880). In the interven- Figure 4. Danburite crystals from the original occurrence, collected |
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(1996) World of Stones 11. "Plus" Ltd. Publishing |
Journal (issue) |
| Unusual Crystallization or... Mineral Pathology? //Mine mlogicheskii zhurnal. 1989.1.11, N 2. p.96-98. 10...Aldanskogo raiona (Post-Jurassic intrusions of the Aldan Region) [1], which was included in the series Petrografiya...Kolyma gold-bearing region, started his labour and scientific career in this region. He visited Aldan for...latter. This was a fresh view of the geology of the region and was based on tens of routes and on hundreds...mines. The latter are fairly numerous over this region, but production at those deposits is now suspended |
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Cook, Robert B. (2009) Phenakite. Rocks & Minerals, 84 (4) 338-344 doi:10.3200/rmin.84.4.338-344 |
Journal (article/letter/editorial) |
| It occurred in both the Morefield and Rutherford mine pegmatites, of the Amelia district, Amelia County...Virginia. Well-formed crystals from the Morefield mine reportedly reached 5 cm in length although the Amelia...Figure 1. A single white phenakite crystal on microcline from Mount Antero, Chaffee County, Colorado....Figure 5. This excellent 2-cm phenakite crystal on microcline, variety amazonite, is attributed to the Florissant...and topaz (Pough 1936; Switzer 1939). Attempts to mine and/or collect this difficult location are almost |
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Shelton, William (2003) Mineral Index with Localities from the Former Soviet Union based on World of Stones - Compiled for the 30th Rochester Mineralogical Symposium, April 3-7, 2003. Rochester Mineralogical Symnposium, Rochester, NY. |
Book |
| clarify information regarding minerals from this region. The list, in alphabetical order, generally uses...Actinolite Actinolite Vyuntspakhk Crimea Sarbaiskii mine Sarbay deposit, Rudnyi Sarbay deposit, Rudnyi Sarbay...quarry Stephanitovaya vein, Sarbay quarry Sarbaiskii mine Stephanitovaya vein, Sarbay quarry Sarbay deposit...Khani River Komatiitovyi stream Kurzhunkul'skii mine Maidantai North Urals Pervomaiskii quarry Pogdornoye...Yubileinaya lode Kukisvumchorr Mt. Khibiny Kirovsky mine, Kukisvumchorr Mt. Kukisvumchorr Mt. Putelichorr |
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(1978) Topographical Index. Mineralogical Magazine, 42 (324) 569-572 doi:10.1180/minmag.1978.042.324.26 |
Journal (article/letter/editorial) |
| (Sverige) Aln6 lsland, titanomagnetite, 265 Brattfors mine, Nordmarks Odalffalt, Viirmland, manganhumite, katoptrite...Gutter, Brook, Hampshire, glauconite, 373 Mill Close mine, Darley Dale, Derbyshire, corundophilite, I7I Seathwaite... 373 Turf Pits mine, Grassington, Yorkshire, spencerite, I76 Cornwall Botallack mine, digenite, I72 Carn...diopsite, 427 Cheesewring quarry, Linkinhorne, danburite, 171; durangite, I72 Chycornish Cam, St. Just...pseudomorphous after analcime, 245 INDEX Geevor mine, neotocite, 279 and M26 Luxulyan, luxullianite (in |
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Moore, Thomas P. (2013, August 15th) What's New in the Mineral World? 35. The Mineralogical Record, Inc. |
Report (issue) |
| ==== Co-rich calcite, 7.8 cm, from the Oumlil mine, Bou Azzer, Ouarzazate, Morocco. Fabre Minerals...Silver on actinolite, 5.4 cm, from the Bouismas mine, Bou Azzer, Ouarzazate, Morocco. Fabre Minerals...========== About three years ago the Bouismas mine at Bou Azzer surprised the collecting world by producing...“from an exceptional find in 2010” in the Bouismas mine, show much stouter, withal a little elongated, metallic...(May 2013) discovery of proustite in the Bouismas mine. A glance at the Minerals listing in our special |
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