 | | 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 |  | 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 |  | | 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...syenite) contain gem minerals, such as microcline (amazonite), sodalite, and zircon. GEM MINERALS IN GRANITIC...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 |  | | Catalog/List | | Hansonberg District Socorro County New Mexico £25 3 DANBURITE single ,sharp, chesil shaped semi-translucent...crystal crossing in the middle Kayes Region , Mali £18 GRAPHIC AMAZONITE, this is a type of graphic granite...with micros of blue Kinoite in places £4 Christmas Mine, Arizona USA 16. MAGNETITE , black lustrous octahedral...crystal about 2cm long and 8mm across £12 Morogoro Tanzania 21. HYDROZINCITE rich soft white masses with...pale green-grey covering, about 2x3 area, Hawkswood Mine Cornwall FLUORESCENT green Short wave £ 18 I- |  | | Catalog/List | | it collected when the Tsumeb Mine (as well as other mines of the region) were still in production in...engineering work took him to the Tsumeb Mine in Namibia. This mine is renowned for producing what are arguably...MINERALS 57001 Azurite Level 8, Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia If the attachment point on...Spitzkopje, Spitzkopje Area, Karibib District, Erongo Region, Namibia Klein Spitzkopje in Afrikaans means: the...Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia Some of the best things to come from the Tsumeb Mine were |  | | 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 |  | | Journal (issue) | | cabochons| Ceruleite from Chile|Yellow danburite from Namalulu, Tanzania|Emerald from Ethiopia|Vivid purplish...Mountains of southwest Utah, USA. The Ruby Violet mine was the only commercial source of gem-quality red...El Guanaco in the Taltal area of the Antofagasta Region, Chile. He kindly donated a 1.45 ct stone to Gem-A...Yellow Danburite from Namalulu, Tanzania: Gemmological Properties and Chemical Composition Danburite is a...gem-quality yellow danburite entered the market, mined from granitic pegmatites in the Morogoro region of central |  | | Journal (issue) | | Newsletter $6.00 Fibrous Malachite from the Mindingi Mine Katanga, Democratic Republic of the Congo Tony Nikischer...Specimens of fibrous malachite from the Mindingi Mine in the Kambove District of Katanga began to appear...ten {I 0) years ago (see figure J ). Although the mine was first worked superficially in the 1930s for...DRC as well (see figure 2). Today, the Mindingi Mine continues to produce wonderful malachite specimens...common forms seen from most nearby localities in the region. Solid, botryoidal malachite samples are currently |  | | Journal (issue) | | mineral type localities. Ilmenite from the Ilmeny Mts, jozeite from San Jose, and other exhibits (up to...arranged according to geographical location (country — region — locality), excluding the tematic collections...ones, the Ilmeny Mts., Slyudyanka, Beryozovsk, Adun-Chilon, and the Zmeinogorskii mine appear to be represented...are from classical localities, such as the II'meny Mts., Beryozovskoye, Vesuvius, Erzgebirge, and others)...mines), malachite (the Gumeshevskii mine), crocoite (the Beryozovskii mine), jasper (Orsk), and others. Large |  | | Catalog/List | | inch area of curious flattened c1ystals Nanisivik ,Mine, Baffin island , North West Territories Canada £25...on I x2 quartz. Kando Hill, Hungary £7.50 13. DANBURITE tem1inated crystal 2.5 inches and about¾ inch...Specimen mounted on a plastic display base Volcano Mine, Tharis, l-Tuleva, Spain£25 15. MINIUM orange coating...North Sweden (see left) Varutrask 21. GRAPHIC AMAZONITE, this is graphic granite with a pale blue feldspar...the "letters" and the background is a pale blue amazonite 22. ORTHOCLASE double terminated single c1ystal |  | | 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 | | | Catalog/List | | and costs only £10 plus post 1147 ■■ ALTAITE Organ Mts, Dona Anna County, New Mexico a few silvery I mm...OH Ix! £3 lx2 £6 2x2 £10 34 ■ ANDRADITE Benallt Mine, Lleyn Wales Pale beige fine grained mass with reddish...serpentine. Ix! £5 lx2 £10 38 BANALSITE Benallt Mine, Lleyn Wales Rich brown mass with approx 5 % Cymrite...£15 2x2 £30 Ba Na Al SiO 22 BANNISTERITE Benallt Mine. Lleyn, Wales Dark brown veinlets throughtout calcite/...fairly sparse. Ix½ £7 CuSe 73 ■ BRAUNITE Praboma Mine, St Marcel ,Piedmont, Italy Dark grey massive with |  | | Journal (issue) | | long prismatic ma/achite c,ysta/s. Mednorudyanskii Mine, Midd/e Ura/s. 4.5 ст across. Тhе Mining Museum...pseudosta/actites оп wa/1ofjissure in mica schist. Gumeshevskii Mine, Middle Urals. Pseudosta/actites 2 ст. SGM, № 11945...сотр/еtе/у in minera/ forming solution. Gumeshevskii Mine, Middle Ura/s. 8 ст. мм, № 278/99. Photo: А. Sverdlov...The enlarged sign on the scl1ematic map shows а region large enough to accommodate several localized occurrences...[69]. 5. О Zapadnye Keivy (West Keivy) mainly amazonite granite pegmatites: gadolinite-(Y), hingganite-(Y) |  | | 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 |  | | Journal (issue) | | 322 Rubies and Sapphires from Winza, Central Tanzania Dietmar Schwarz, Vincent Pardieu, John M. Saul...diamonds traditionally associated with the Wesselton mine, “Cape” for pale yellow COLOR GRADING “D-TO-Z”...“D-TO-Z” DIAMONDS diamonds from the Cape of Good Hope region, and “Jager” for colorless diamonds with strong...those typically recovered from the “Jagersfontein” mine in South Africa (Shipley, 1950b; Liddicoat, 1993)...the blue region of the spectrum, as it is the absorption area of wavelengths in this region that allows |  | | Journal (issue) | | responsible for optical effects are described. As yet the region has not yielded a corundum crystal large enough...plant matter or dead animals can penetrate this region (Gubelin, 1987) unless forced by some external...intruded sand grain which somehow had penetrated the region between the shell and the shellbuilding ectoderm...Ch'unch'on). Annual production of the nephrite mine (the Daeil Mine) is reported to be approximately 80 000-90...map of nephrite mine area, Chuncheon, Korea. Occurrences The geology of the nephrite mine area consists |  | | Journal (article/letter/editorial) | | there appears to be a general association with amazonite-bearing pegmatites. Good phenakite specimens are...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...2-cm phenakite crystal on microcline, variety amazonite, is attributed to the Florissant area of Teller...and topaz (Pough 1936; Switzer 1939). Attempts to mine and/or collect this difficult location are almost |  | | Thesis/Dissertation | | Geosciences Mineralogy and petrology of the amazonite pegmatite at Bakstevalåsen, øvre Eiker Øyvind...Øyvind Sunde Mineralogy and petrology of the amazonite pegmatite at Bakstevalåsen, øvre Eiker Øyvind Sunde...specimen of the amazonite pegmatite at Bakstevalåsen measuring a 15 cm cross-section with amazonite matrix and...classified as a rare-element gadolinite type amazonite pegmatite is situated in Paleozoic sedimentary...peralkaline ekerite granites in the Permian Oslo Region. The amazonite pegmatite is approximately 16 meters long |  | | Journal (issue) | | brown jarosite crystals on matrix from the McLean Mine, Esmeralda Co., Nevada. The Martian material was...manufacturer’s standards. NIST Price: $556.00 Hard Rock Mine Waste (SRM 2780a) This Standard Reference Material...analysis used to determine elements in hard rock mine waste and materials of a similar matrix. SRM 2780a...material collected from waste piles of abandoned mine sites in the mountains of central Colorado. A unit...images. Figure 6 (Right) - Sheet Copper – Flambeau Mine (Rusk County, WI) Figure 2—Dr. Weis’s Personal |  | | Journal (issue) | | apatite, barite, beryl (morganite), wollastonite, danburite, datolite, quartz, calcite, corundum, microcline...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...as visible aggregates which are of interest fora region-mineralogical collection (crystals, dtuses of crystals |  | | Journal (issue) | | 309 VOL. 40, No. 6 JUNE, 1965 CONTENTS THE DANBURITE LOCALITY AT DANBURY, CONN—Ronald E. Januzzi THE...Menard—1965 Buy and Use a Good Mineral Book Our SAPPHIRE mine will be open to Rockhounds. Write for information...Mineralogical and Geological Societies Northern Region — Rockrama — to be held at the Minnesota Fair Grounds...Belkxue. Wadi. v>:a)iM. Oa. 2. 3. 1965—Topeka Gun & Mine al Society, Inc., 9th Annual Show, will be held...Topeka, Kans. 66616. Oct. 2, 3, 1965 — Miami Valley Mine al and Gem Club Annual Show at the Dayton Museum |  | | Book (edition) | | Linopolis, Brazil, H Page 13: Gold, 35 mm.Eagle's est Mine, California, G Publi!>hed by Grdllit.u.o. Stefanikova43...abbreviated, e.g. canton (Switzerland), vilayet (Turkey), region (Chile), kray and oblast (Russia). The country...abbreviations used are as follows: Mt. (mount or mountain), Mts. (mountains), R. (river), Is. (island), Vole. (volcano)...by Mobutu, and is now the Katanga administrative region again. The former Kivu province is now divided...United States or of the Upper Silesian historical region in Poland, where the importance of ore-bearing |  | | Book (edition) | | Lesser Hematite 162 Pyrite 162 Feldspar 164 Amazonite 164 Labrador ite 166 Aventurine Feldspar 166...Phenacite 180 Apatite 194 Dumortierite 182 Danburite 182 Titanite 194 Kyanite 196 Axinite 182 Scheelite...Gold Precious beryl Cordierite Simpsonite Danburite Grossular Sugilithe Desclsizite Nephrite Neptunite...Cornelian Strontianite YAG Corundum Tansanite Amazonite Amblygonite Zirconia Dioptase Dolomite Tantalite...Amblygonite 7-71/2 Sanidine 6 6 Azurite Danburite Simpsonite Tourmaline 7-71/2 Amethyst Rose |  | | Catalog/List | | pinkish fine grained mass in Calcite.(Dark Star Mine,Ravalli County, Montana USA) 1 x 14 £2.50 1x1 £4...guite rich black masses in matrix (Union Carbide Mine, Wilson Springs Garland County, Arkansas USA) 1x1...fairly sparse, green crusts on matrix. (San Miguel Mine Moctezuma Mexico) 1cm piece £ 5 5mm £3 WITH UNUSUAL...CO/3 0 Quite rich yellow crusts on matrix. (Outpost Mine, San Domingo Wash Maricopa County Arizona) Ixliins...MINERAL !I dark red micro's on matrix. (Getchell Mine,Humboldt Co . Nevada USA) 5mm £4 up to 1.5cm £7 |  | | Book (edition) | | 178 Hematite . 178 Pyrite 180 Feldspar Group Amazonite Moonstone 180 180 Orthoclase 180 Labradorite...196 Tolite 196 Phenakite 196 Dumortierite 198 Danburite 198 Axinite 198 Benitoite 200 Cassiterite 200...Childrenite Chrysobery| Cobaltite Cordierite Danburite Wavellite Witherite Yttrotantalite Zektzerite...Xonotlite Yugawaralite Scole- triclinic Albite Amazonite Amblygonite Andesine Anorthite Anorthoclase Axinite...Sapphirine Dumortierite Almandine Boracite Cordierite Danburite Grandidierite Pyrope Schorlomite Sekaninaite Simpsonite |
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