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Dravite from
Landanai, Simanjiro District, Manyara Region, Tanzania


Classification
Species:Dravite
Formula:NaMg3Al6(Si6O18)(BO3)3(OH)3(OH)
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Dravite data
Locality Data:Click here to view Landanai, Simanjiro District, Manyara Region, Tanzania
Photo GalleryView Gallery (4 photos)
Data Identifiers
Mindat Occurrence Record ID:1233475
Long-form Identifier:1:3:1233475:1
GUID (UUID V4):95779014-97f0-4c40-bbf6-aa6c40848ff0
Nearest other occurrences of Dravite
28.9km (17.9 miles) Commander Mine, Nadonjukin, Simanjiro District, Manyara Region, Tanzania
57.8km (35.9 miles) Merelani Hills, Lelatema Mountains, Simanjiro District, Manyara Region, Tanzania
References
Reference Search (possible matching items)
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
Report (issue)
mine, Moulay Bouazza, Khénifra, Meknès-Tafilalt region: Joan writes a bit mysteriously that “They come...mine, Moulay Bouazza, Khénifra, Meknès-Tafilalet region, Morocco. Rosell Minerals specimen and photo. ...mines area of the famous Bou Azzer cobalt-mining district. We have seen pink cobalt-rich calcite from Bou...Oumjrane mining area, Er Rachidia, Meknès-Tafilalet region, Morocco. Fabre Minerals specimen and photo. Morocco...Alnif in Er Rachidia Province, Meknès-Tafilalt region—see, in the January-February 2011 issue, my report
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)
Svätodusna deposit, Lubietová, Banská Bystrica Region, Slovakia. Will and Rika Larson collection; Robert...cm, from the Eagle’s Nest mine, Michigan Bluff District, Placer County, California. Jingnan Zhang collection...Bustamite, 2.7 cm, from the North mine, Broken Hill District, New South Wales, Australia. Stretch Young collection...matrix, 2.7 cm, from the Tsumeb mine, Oshikoto Region, Namibia. From the so-called “gem mimetite” pocket...Scorodite, 3 cm, from the Tsumeb mine, Oshikoto Region, Namibia. Ex Rob Lavinsky, Mim Mineralogical Museum
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...Azurite Level 8, Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia If the attachment point on the back of...Klein Spitzkopje, Spitzkopje Area, Karibib District, Erongo Region, Namibia Klein Spitzkopje in Afrikaans...Pseudomorph after Azurite Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia Some of the best things to come from the
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...nation of Tanzania has great gem wealth. First known by Westerners for its diamonds, Tanzania emerged in...De Beers has reinstated diamond exploration in Tanzania, n e w gem materials such as transparent green
Journal (article/letter/editorial)
fluor-uvite samples from East Africa (Landanai, Arusha Region, Tanzania) with 0.45 ± 0.04 apfu [4]Al; MacDonald...Mössbauer and structural parameters in elbaite-schorl-dravite tourmalines. Am. Mineral., 93, 658–666. Berryman...crystal structure: Investigation of synthetic K-dravite, dravite, oxy-uvite, and magnesio-foitite using SREF...Linking structure and chemistry in the schorl-dravite series. Am. Mineral., 84, 922–928. Bosi, F. & Lucchesi...Wiedenbeck, M. (1997): Werdingite from the Urungwe district, Zimbabwe. Mineral. Mag., 61, 713–718. Grice,
Report (issue)
Alexander U. Falster and William B. Simmons • Dravite from Qarusulik, Ameralik Fjord in Southwestern...Tschermak later focused on tourmaline and named dravite, the third of the currently accepted tourmaline...accepted tourmaline species: schorl, elbaite and dravite. Quensel and Gabrielson (1939) revised Riggs' (1888)...the Sludyanka complex in the southern Lake Baikal region of Russia. Six New Species Today, this team has...vanadium mineral species from Sludyanka: vanadium­ dravite, natalyite, chromphyllite (mica), magnesiocoul­
Journal (issue)
Pakistan|Chrome chalcedony from Tanzania| Yellow dravite from Tanzania|New garnets from East Africa|Quartz...of rays|‘Zebra Star’ sapphire from Tanzania|Scapolite from Tanzania with magnetite inclusions|Gastropod...include the following fields: author, title, source, region and keywords. In addition, Sheahan’s diamond reference...found in the southern mountains of the Negev Desert region near Eilat, Israel. This area is known to be rich...Darren mine located near Ambilobé in the Vohemar District of northern Madagascar. This supplier stated that
Journal (issue)
Play-of-color opal from Brazil • Prehnite from Tanzania • Colorado rhodochrosite • Serpentinite from Argentina...The report on synthetic corundum “gem rough” in Tanzania (Winter 2006 Gem News International, p. 282) is...natural form of the coral branch (figure 2). The region centered around Torre del Greco near Naples, Italy... as well as other broad bands deeper in the UV region at approximately 280 and 315 nm. In the dyed samples...series of broad absorption bands in the UV-Vis-NIR region. The predominant absorption consists of a multiple-band
Journal (issue)
African origin, most probably all from Tunduru, Tanzania, are presented. The faceted gemstones were identified...recently, several samples from the Tunduru area in Tanzania have been described (anonymous, 1996; Burford...and quantitative chemical data of material from Tanzania are unknown. Due to the similar chemical composition...is not known whether the samples described from Tanzania as taaffeites (anonymous, 1996; Burford, 1998)...stones originated from the Tunduru mining area in Tanzania and consisted of mixed parcels containing the
Journal (issue)
North-West Branch: R. Perrett, FGA South Yorkshire & District Branch: G. A. Massie, FGA Examiners: A. J. Allnutt...chrysoberyl cat's-eye from pegmatites of Trivandrum District, Southern India. Journal of Gemmology, XIX, 412-15...1981. Observations on some lites of of Central Tanzania. Journal Journal of of Gemmology, 17, 17, 6, 395-405...orangish-brown, rough crystalline mass, mined in Tanzania, that weighed approximately 75 carats. Shown in...are less uniform than the spectra in the visible region (Figure 3). This result is understandable by various
Journal (issue)
Koiv~il~i New Rubies from the Morogoro Area, Tanzania H. A. HLinni and I<. Schmetzer NOTES AND NEW...years, rubies have emerged from new deposits in Tanzania and Vietnam that closely resemble Burmese stones...has recently emerged from the Morogoro area of Tanzania. The loose rubies and fancy sapphires illustrated...economic outlook of countries such as Vietnam and Tanzania, promises both new markets and new gem materials...the historic deposits in the Bohemian Hills. In Tanzania, we have seen mining expanded, leading to the
Journal (issue)
of Aurora Gems; (6) a 9.15 ct ruby from Winza, Tanzania, courtesy of Hakimi & Sons; (7) a 14.80 ct “golden”...were combined under the jurisdiction of the U.S. District Court of New Jersey 168 PRODUCTION AND MARKETS...Africa, and its interest in the Williamson mine of Tanzania. Soon after the Cullinan deal went though (July...Weldon, 2009). One new source of corundum, Winza in Tanzania, began yielding some fine-quality ruby in 2007...with the opening of a new mine in the Nova Era region and technological developments at established mines
Book (edition)
Daliranite, 5111111, Zarshouran Au-As deposit, Takab region, Iran Grandviewite, 5 111111, Capillitas deposit...departamento district municipio Saint Sainte island mount, mountain...acic~- depo it, N of ofija, Vratsa-Izdremet ore region, Bullar crystals to I mm, pale yellow, transparent...the Alcaparrosa mine, Cerritos Bayos, Antofagasta region, Chile. MM 76, 851861, 2012. Aldrigeite (Cd,Ca)(Cu...tuffs of the 01 Doinyo Lengai Vole., NW of Arusha, Tanzania. MM 73, 373384, 2009. Ambrinoite (K,NH 4)i(As
Journal (issue)
geprägt. Schon einmal wurden Bergbaurelikte der Region in einer Publikation (,,Von Wasserkunst und Pingen"... Nach Bekanntwerden der ersten Funde wurde die Region um Tata intensiv von Hunderten von „Meteoritenjägern"...Bekanntwerden des Fundes reisten ca. hundert Sammler in die Region EI Aglab, die sich rund 60 km südöstlich von Tata...(Si 2O1) 2O,-a new mineral species from volcanic region Eifel,Germany. - ZVMO 140 (6),34-44. GALUSKIN,...EttringerBellerberg volcano near Mayen (Eifel district, Germany). - Mineral. Mag. 76, 707-716. HENTSCHEL
Journal (issue)
variety of goods produced throughout the Pacific region. In this issue, Russell Shor reviews the economic...diverse industry operating throughout the Pacific region. The new products, consistent quality, and broader...result, large pearl farms throughout the Pacific region broke out of their role as “contract” producers...pearl production has now spread across the Pacific region. This map indicates the approximate areas where...and diversified industry throughout the Pacific region. These forces would affect pearl production in
Book (edition)
dept. (departement), dept. (departamento), dist. (district). Less common terms are not abbreviated, e.g.... canton (Switzerland), vilayet (Turkey), region (Chile), kray and oblast (Russia). The country names...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...Kunlun Mts., near Hotan, Xinjiang Uygur Autom. region, China, also at Fengtien, Taiwan. Green at Ospinskoye
 
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