 | | 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 |  | | Journal (article/letter/editorial) | | the Stannite Group from the Gem Mines near Merelani, Tanzania Luca Bindi 1 1 2 * and John A. Jaszczak...wurtzite–sphalerite crystals from the gem mines near Merelani, Lelatema Mountains, Simanjiro District, Manyara...Manyara Region, Tanzania. Associated minerals also include graphite, diopside, and Ge,Ga-rich wurtzite...voids. The ordering of the metal atoms leads to a sphalerite(sph)-derivative tetragonal unit-cell, with a...stannite group; gallium; sulfide; Merelani tanzanite deposit; Tanzania Minerals 2020, 10, 467; doi:10 |  | | Catalog/List | | Ammoniotinsleyite xls Punta de Lobos, 90 km south of Iquique, I Region, Tarapaca / Chile; Pinkish crystals of up to 1...(xls) Arakawa, Minamiboso City, Chiba Pref., Kanto Region, Honshu Island / Japan / TYP; The extremely rare...mm in size, very rich on large cavities in a Sphalerite-Gypsum matrix. Nice and showy specimens of the...Mwajanga Pegmatite, Mererani, Simanjiro District, Manyara Region / Tanzania; The rare and new mineral of...(xls) Tsumeb Mine, Tsumeb, Otavi Mts., Otjikoto Region / Namibia; Ore-microscopic and via REM-EDX visible |  | | Catalog/List | | Signature® Internet Session 2 Heritage Auctions Design District Annex 1518 Slocum Street • Dallas, TX 75207 (HERITAGELive...the Tsumeb Mine (as well as other mines of the region) were still in production in the 1970s. You will...village near the foothills of the Drakensberg Mountains, in South Africa. His love of rock climbing soon...an exciting trip by Land Rover into the Maluti Mountains of Lesotho (formerly Basutoland) to visit the...Azurite Level 8, Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia If the attachment point on the back of |  | | Book | | gemological wealth of East Africa. This unique region encompasses ·what may be the world's richest gem...gemologist and geologist, Dr. Peter Keller. Kenya and Tanzania are revealed in their full mineralogical splendor...chrome tourmaline are widely identified with the region. ( continuedon backflap) ♦ ♦ ♦ ♦ ♦ ~...Conclusion 11 Chapter 2. Diamond Deposits of Tanzania 15 Location 16 Geology 18 Mining 20 Properties...Northern Province, Tanzania 28 Ruby and Sapphire from Umba, Tanga Province, Tanzania 32 Sapphire from Kenya |  | | Journal (issue) | | (5) Chrysoberyl, 2.3 cm, from Takovaya, Ural Mountains, Russia. (6) Chalcocite, 2.5 cm, from Cornwall...Miask, Ural Mountains, Russia. (8) Pyrargyrite, 1.8 cm, from St. Andreasberg, Harz Mountains, Germany....Dyscrasite twin, 1.9 cm, from St. Andreasberg, Harz Mountains, Germany. (3) Glaucodot twin, 2.5 cm, from Håkansboda...Harz Mountains, Germany. (5) Elbaite, 2.5 cm, from Sarapulka, 12 km from Mursinka, Ural Mountains, Russia...Aquamarine beryl, 2.4 cm, from Slieve Corra, Mourne Mountains, County Down, Ireland. Gem-crystal thumbnails |  | Pring, Allan, Wade, Benjamin, McFadden, Aoife, Lenehan, Claire E., Cook, Nigel J. (2020) Coupled Substitutions of Minor and Trace Elements in Co-Existing Sphalerite and Wurtzite. Minerals, 10 (2) 147 doi:10.3390/min10020147 | Journal (article/letter/editorial) | | Substitutions of Minor and Trace Elements in Co-Existing Sphalerite and Wurtzite Allan Pring 1, *, Benjamin Wade...chemistry of expitaxial intergrowths of wurtzite and sphalerite are reported. EPMA and laser ablation inductively...2.3 wt% for the sphalerite component, while the sample from Merelani Hills, Tanzania, is Mn-rich with...levels in wurztite-4H of 9.1 wt% and for the sphalerite component 7.9 wt% In both samples studied the...over sphalerite. LA-ICP-MS line scans across the boundaries between the wurtzite and sphalerite domains |  | | Journal (issue) | | You, Donors FEATURE ARTICLE 80 Gem Wealth of Tanzania Dona M. Dirlam, Elise B. Misiorowski, Rosemary...ABOUT THE COVER: Over the last three decades, Tanzania-the subject of the lead article in this issue-has...of gem-quaLity diamonds, rubies, and sapphires, Tanzania is perhaps best known for its production of the...of zoisite, tanzunite, which occurs in the Merelani Hills. The superb transparent tanzanite crystal shown...nation of Tanzania has great gem wealth. First known by Westerners for its diamonds, Tanzania emerged in |  | | Journal (article/letter/editorial) | | the specimen probably originated in the Wah Wah Mountains, which are close to Milford. Zoned dodecahedral...cm on edge have been found in the Santa Rosa Mountains, Riverside County. Grossular found near Bishop...Kimitoön, Western Finland Province, Finland Proper region, Finland, where lusterless dodecahedra of the iron-rich...edge have been found at Žulová, Jesenik district, Olomouc region, Czech Republic. Similar specimens have...have come from Černá Voda, Jesenik district, Olomouc region. Brown grossular to 1 cm on edge, in a massive |  | | Book (volume) | | Morganite) (Red Beryl) Harris Claim, Wah Wah Mountains, Utah, 4 Bournonite (on Quartz) Yaoganxian Mine... Bahia, Brazil, 22 Cavradi Gorge, St. Gotthard Region, Graubunden, Switzerland, 49 Hyalophane Zagradski...Shattuckite), Omaue Mine, Kaokoveld Plateau, Kunene region, Namibia, 17 Mimetite Congreso-Leon Mine, San Pedro...Prov., Atacama Region, Chile, 28 Pyrargyrite Samson Mine, St. Andreasberg, Harz Mountains, Lower Saxony...Brazil, 48 Scapolite Uluguru Mts., Morogoro Region, Tanzania, 50 Selenite Naica, Mexico, 68 Shattuckite |  | | Journal (article/letter/editorial) | | millimetersized lead-gray compact masses associated with sphalerite and stibnite. In the same vein, the thallium...a new mineral from the Tintic District, Utah, and the Masonic District, California, USA. Canadian Mineralogist...mines: Carisa, Boss Tweed, or Red Rose), Tintic district, Juab Co., Utah, U.S.A. It was later also discovered...the town of Bodie in the Bodie Hills volcanic field, Masonic district, Mono Co., California, U.S.A. The...for its type locality. The mines of the Tintic district exploited polymetallic (Au-Ag-Cu-Pb) vein deposits |  | | Catalog/List | | 10:00 AM – 5:00 PM CT Heritage Auctions Design District Annex 1518 Slocum Street • Dallas, TX 75207 Session...5:00 PM ET LOT VIEWING Heritage Auctions Design District Annex 1518 Slocum Street • Dallas, TX 75207 Thursday...grow. 73001 TOURMALINE Momeik Township, Kyaukme District, Shan State, Myanmar (Burma) Looking almost like...com/6150 73002 TOURMALINE Momeik Township, Kyaukme District, Shan State, Myanmar (Burma) For those that have...750 73003 TOURMALINE Momeik Township, Kyaukme District, Shan State, Myanmar (Burma) As if Momeik doesn’t |  | | Journal (article/letter/editorial) | | and powder Xray diffraction. The presence of sphalerite, gahnite, and two unidentified exotic element-bearing...been found in metasomatic potassium feldspar. ● Sphalerite in millimeter-sized, red to colorless crystals...INCLUSIONS IN GREEN MUSCOVITE FROM THE MERELANI HILLS, TANZANIA. J. Fink1, C. Emproto1, J. A. Jaszczak2...Beautiful green mica crystals from the Merelani Hills of northern Tanzania were sent to the authors by Simon...(EDS) shows the presence of minor vanadium in the Merelani mica crystals. Roscoelite is the V dominant analog |  | | Catalog/List | | Design District Showroom 1518 Slocum Street • Dallas, TX 75207 Heritage Auctions Design District Showroom...Board Hayley Brigham Managing Director Beverly Hills Greg Rohan President Alissa Ford Managing Director...cushion shaped “Red Emerald” from the Wah Wah Mountains in Utah which happens to the be the only known...72013 Gemstone: Demantoid Garnet - 1.12 Cts. Ural Mountains, Russia At just over a carat, this gemstone is...- 11.91 Ct. Tubussis Farm 22, Karibib District, Erongo Region, Namibia Andradite Garnet is present in |  | | Journal (issue) | | on a mountain-climbing vacation in the remote mountains of Patagonia, the authors stumbled upon a remarkable...South American region known as Patagonia, a barren tableland between the Andes Mountains and the Atlantic...called “the Pampas”—a very rugged and windswept region which nevertheless is home to various flora and...condor, seen mainly amidst the craggy peaks of the mountains. The condor, with a body length of over a meter...in 1985 in order to maintain possession of the region and its tourism income. In the summer months the |  | | Journal (issue) | | Budd photo. Tanzanite zoisite, 6 cm, Merelani Hills, Arusha, Tanzania. Ex Steve SmaJe collection. Joe Budd...12 cm, Daoping mine, Guangxi Zhuang Autonomous Region, China. Joe Budd photo. 10 Supplement to The...photo. Mesolite with apophyllite, 14 cm, Pune district, Maharashtra, India. Joe Budd photo. Apophyllite...Apophyllite on stilbite, 9.5 cm, Jalgaon district, Maharashtra, lndia. Joe Budd photo. Arsenopyrite with quartz... Xionghuang Kuang mine, Wuyu district, Guangxi Zhuang Autonomous Region, China. Ex Steve Smale collection |  | | Journal (article/letter/editorial) | | Figure 1. Willemite from the Tsumeb mine, Otijikoto region, Namibia. The specimen displays the typical ball-like...hardystonite, leucophoenicite, hedyphane, and sphalerite. Black willemite is common from the Sterling...associated with black willemite include löllingite, sphalerite, and fayalite (Dunn 1995). Specimens of willemite...specimen producer is the Tsumeb mine, Tsumeb, Otjikoto region, Namibia. Willemite specimens were relatively common...Willemite from the Tsumeb mine, Tsumeb, Otijikoto region, Namibia. The specimen is 8.5 cm high. Scott Rudolph |  | | Journal (article/letter/editorial) | | order of abundance they are: quartz, smithsonite, sphalerite, pyrite, goethite, cerussite, galena, halloysite-10A...University. Images of minerals from the Merelani Hills of northern Tanzania, including the one shown of merelaniite |  | | Journal (article/letter/editorial) | | Siderite Siete Suyos Mine, Atocha-Quechisla District Sud Chichas Province, Potosí Department, Bolivia...siderite from Siete Suyos mine, Atocha-Quechisla district, Sud Chichas Province, Potosí Department, Bolivia...chief associated minerals of siderite include sphalerite, galena, hematite, calcite, ankerite, dolomite...found as iridescent microcrystals; the Duquesne district, Santa Cruz County, as curved rhombohedra; and...rhombohedra) associated with sphalerite and pyrite. The White Raven mine, Ward district, Boulder County, has |  | | Book (volume) | | Prehnite) Goboboseb Mts., Brandberg Area, Erongo Region, Namibia, 67 Apatite (on Cookeite) Pulsifer Quarry...Diopside (with Pyrite) Karo Mine, Merelani Hills, Arusha Region, Tanzania, 35 Djurleite Tazalarht mining...1, Cave-in-Rock Dist., Illinois, 62-63 (with Sphalerite) Taolin Lead-Zinc Mine, Taolin, Hunan Prov, China...Hematite (on Quartz) Cavradi Gorge, St. Gotthard Region, Graubunden, Switzerland, 64 Inesite (on Calcite...Switzerland, 53 Tanzanite (with Quartz) Merelani Hills, Arusha Region, Tanzania, 52 Topaz (with Smoky Quartz) Dassu |  | | Journal (issue) | | money. lnspired by promotional brochures touting "mountains füll of rich gold and silver ores, sulphurets...scalenohedral calcite crystals. The Terlingua mercury district, with a few smaller, adjacent districts in Texas...cutting coarse-grained reddish granites of the hilly region thereabouts, known geologically as the Llano Uplift... 15 cm, from the Wagholi quarry complex, Pune District, Maharashtra, India. Don and Laura Aaron photo...Liubao, Wuzhou Prefecture, Guangxi Zhuang Autonomous Region, China. Don and Laura Aaron photo. Drusy quartz |  | | Journal (issue) | | collecting has flourished throughout the Northwest region in recent decades; a history of the mineral discoveries...the estate. Many early minerals collected in the region about Spokane, Washington, are represented in the...“a new mineral store” in the central business district of Spokane, Washington, at W. 410 Riverside Avenue...and associated minerals from the Michigan copper district. This is an old time collection,” he said, “collected...him before his death. The company advertised as Hills Gems & Minerals beginning in May–June 1960. By January–February |  | | Journal (article/letter/editorial) | | underground in 1903 on the Veta Madre, Guanajuato district, Guanajuato. Philadelpia Museum photo. veins...(Kessler 1977). Fluorites from throughout this region are readily recognized by abundant petroleum inclusions...the fluorite deposits of the Illinois fluorite district (Heyl 1982; Goldstein 1997; Lillie and Goldstein...Hicks Dome, which hosts the Illinois fluorite district (Heyl 1982), so the differences may be less than...with associated fluorite. The eastern part of this region was the world’s principal producer of celestine |  | | Catalog/List | | Internet, Fax, and Mail) Heritage Auctions Design District Annex 1518 Slocum Street • Dallas, TX 75207 Session...Collection LOT VIEWING Heritage Auctions Design District Annex 1518 Slocum Street • Dallas, TX 75207 Wednesday...(Apex-Dixie Mine), Jarvis Peak, Tutsagubet District, Beaver Dam Mountains, Washington County, Utah, USA Distinctively...rests on a matrix/base of black, crystalline Sphalerite with bright sub-metallic luster. The Fluorite...Quarry, Jalgaon, Dindori (Dhindori), Nashik District (Nasik District), Maharashtra, India As straightforward |  | | Catalog/List | | Design District Showroom 1518 Slocum Street • Dallas, TX 75207 Heritage Auctions Design District Showroom...York Hayley Brigham Managing Director Beverly Hills Ed Beardsley Craig Kissick Jenny Milani Vice... Carthage Central Tennessee Ba—F—Pb—Zn Mining District Smith Co., Tennessee, USA Fluorite from Elmwood... The crystals are perched nicely on metallic Sphalerite and Calcite with the largest measuring 1.68 inches...500 72034 Chrysocolla Sphere Clifton Morenci District Greenlee County Arizona, USA This vibrant sphere |
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D-Block Mine, Merelani Hills, Lelatema Mountains, Simanjiro District, Manyara Region, Tanzania