 | | Journal (issue) | | November-December 2000 Volume Thirty-one, Number Six MOZAMBIQUE! Africa in the Mineralogical R e c o rd .......W. E. Wilson Famous mineral localities: The Alto Ligonha pegmatites, M ozam bique......................... 519 COVER: ELBAITE crystal, 7.3 cm, from the Alto Ligonha district, Mozambique. American M useum...present our first article on mineral occurrences in Mozambique, but certainly not the first to deal with African...Island, 7:310-314 MADAGASCAR The Anjanabonoina pegmatite, 20:191-200 MALAWI Zomba district, 25:29-35, 38 |  | | Journal (article/letter/editorial) | | granitic pegmatites in Zambia, Madagascar, Russia, Mozambique, the United States, Nepal, and the Democratic...predominantly Mn-rich (> 3 wt.% MnO) elbaite and “fluor-elbaite”. Though rare, yellow rossmanite and...and “fluor-rossmanite” from Mozambique also occur. Overall, the MnO content ranges from 3.09 to 8.90 wt...form. Its presence implies that the original pegmatite-forming melt must be relatively low in Fe and...the late stages of pegmatite formation to crystallize yellow elbaite, “fluor-elbaite”, rossmanite or “fluor-rossmanite” |  | | Journal (article/letter/editorial) | | magmatic, pegmatitic environments are most commonly elbaite and fl uorliddicoatite species, and the rarer gem...tourmaline, gemstone, Paraíba-type, chromophores, gem deposits TOURMALINE AS A GEMSTONE Perhaps more than any...the late 18th century the discovery of rubellite deposits near Nerchinsk, Siberia, and the fi nds of Brazilian... 333 O C TOBER 2011 Specimen of polychrome elbaite crystals (28 cm tall), characteristic of gem tourmaline...FIGURE 2 FIGURE 3 Pendant consisting of two Mozambique copperbearing tourmalines (10.95 ct pink and |  | | Journal (issue) | | perthite. Four-rayed star tourmaline (bicolour elbaite) has one direction caused by hollow channels and...Brazil and is reliably reported to come from a pegmatite in Minas Gerais. The base is tourmaline with a...from the Vishnevye Mts. in the Urals, a famous pegmatite region about 100 km south of Ekaterinberg, were...not and it was surprising to find a tourmaline - elbaite with a weak fourrayed star. The stone is an elongated...Wrexham, Wales ABSTRACT: Near Jordanow Slaski, deposits of nephrite jade are intimately associated with |  | Melcher, Frank, Graupner, Torsten, Gäbler, Hans-Eike, Sitnikova, Maria, Henjes-Kunst, Friedhelm, Oberthür, Thomas, Gerdes, Axel, Dewaele, Stijn (2015) Tantalum–(niobium–tin) mineralisation in African pegmatites and rare metal granites: Constraints from Ta–Nb oxide mineralogy, geochemistry and U–Pb geochronology. Ore Geology Reviews, 64. 667-719 doi:10.1016/j.oregeorev.2013.09.003 | Journal (article/letter/editorial) | | Schist Belt (western Zimbabwe) 4.3.3. Orange River Pegmatite Belt (Namibia, South Africa) AC 4.3.3.1. Radiometric...data 4.4.2.2. Mineralogy 4.4.3. Alto-Ligonha Province (northern Mozambique) 4.4.3.1. Radiometric data 4...3.2. Kamativi Schist Belt 5.3.3. Orange River Pegmatite Belt 5.4. Late Neoproterozoic to early Paleozoic...Pegmatites of Ethiopia and Somalia 5.4.3. Alto-Ligonha Province (Mozambique) 5.4.4. Damara Belt (Namibia) 5.4...presented for 13 rare-element granite NU and pegmatite districts in Africa, covering Archean, Paleoproterozoic |  | | Journal (issue) | | MINE ."Iii[! iil"J www.tandfonline.com/vram Pegmatite Minerals & Gems WILENS EXQUISITE MINERALI ...Cook 10 Southern California Pegmatite Gems Mark Mauthner 16 The Pegmatite Interest Group (PIG) Is Hog...Hog Heaven! David London Pegmatite gems, p. 70 18 Pegmatites William B. Simmons, Karen L. Webber, and...Falster 33 Cliff Trebilcock, Lifelong Field Collector of Pegmatite Minerals, Recipient of the Maine Mineral...Heritage Award Donald A. Dallaire 56 Maine Pegmatite Workshop: Sponsored by the Maine Mineral & Gem |  | | Report (issue) | | GS/GN A lifesize pen and ink render ing of elbaite crystals with lepidolite from the Golconda Mine...Maximilian Glas ............ 62 • Inclusions in Elbaite Crystals .......... 64 John I. Koivula • If Icarus...Amerika in Saxony A Survey of the World's Tourmaline Deposits Africa ............................73 Asia .....tourmaline is not generally found in easy to work alluvial deposits as were the ancient gems. In fact, almost...generally considered a variety of tourmaline (elbaite). The difficulties in ana lyzing tourmaline deterred |  | | Journal (issue) | | 2008 PAGES 1– 106 Paraíba-type Tourmaline from Mozambique History of Diamond Treatments VOLUME 44 NO. 1...Copper-Bearing (Paraíba-type) Tourmaline from Mozambique Brendan M. Laurs, J. C. (Hanco) Zwaan, Christopher... COPPER-BEARING (PARAÍBA-TYPE) TOURMALINE FROM MOZAMBIQUE Brendan M. Laurs, J. C. (Hanco) Zwaan, Christopher...Alexander U. Falster Copper-bearing tourmaline from Mozambique was first recovered in 2001, but its Cu content...sold with its Mozambique origin disclosed until 2005. It has been mined from alluvial deposits in an approximately |  | | Journal (issue) | | “Paraíba” Tourmaline from Brazil, Nigeria, and Mozambique Lead Glass–Filled Rubies VOLUME 42 NO. 1 Tortoise...Copper-bearing Tourmaline from Brazil, Nigeria, and Mozambique: Chemical Fingerprinting by LA-ICP-MS Ahmadjan...the submission of articles on all aspects of the field. Please see the Guidelines for Authors on our Web...the late 1980s, copper-bearing “electric” blue elbaite from Paraíba State, Brazil, has been one of the...elsewhere in Brazil, as well as in Nigeria and Mozambique. The lead article in this issue describes how |  | | Journal (article/letter/editorial) | | also in Amelia County, and from the Herbb No. 2 pegmatite near Flat Rock, Powhatan County, Virginia (Dietrich...Ytrrian spessartine occurs in the Brown Derby pegmatite in the Ohio Creek district, Gunnison County. Roberts...occur with arsenopyrite and lesser pyrite in the pegmatite exposed in the November mine southeast of the...Pavo, Kiawa, Red, Cribbenville, and La Paloma deposits. Yttrian spessartine occurs in the Elk Mountain...reported with amazonite and topaz from the Zapot pegmatite northeast of Hawthorne, Mineral County. The dark |  | | Journal (issue) | | Northwest minerals, so he got to know all of the field collectors active in that area. Ray Lasmanis, for...photos! Spectacular! $20 v.31/#6 Alto Ligonha pegmatites, Mozambique, 62 photos incl. gem species and...Regularly! Alpine Mineral Company Fine Alpine and Gem Pegmatite Minerals www.alpineminerals.com e-mail: kevin@alpineminerals...minerals and meteorites, New Mexico fossils, Harding Pegmatite Mine Collection Colburn Gem & Mineral Museum...am–6 pm daily Specialties: Italian minerals, pegmatite minerals 207 The Friends of Mineralogy, Inc |  | | Book | | encompasses ·what may be the world's richest gem deposits, and is explored in depth in this pioneering work...Shield 6 The Mozambique Belt 8 The Capping Volcanics 10 Conclusion 11 Chapter 2. Diamond Deposits of Tanzania...Ruby and Sapphire Deposits of East Africa 27 Ruby From Longido, Northern Province, Tanzania 28 Ruby and...and Sapphire from Umba, Tanga Province, Tanzania 32 Sapphire from Kenya 42 Ruby from Mangari, Tsavo West...Tanzania 86 Chapter 7. Tourmaline of East Africa Elbaite Tourmaline from Tanzania 96 Red Dravite Tourmaline |  | | Report (issue) | | William "Skip" Simmons and Alexander Falster, pegmatite specialists from the University of New Orleans...group. Left: Beryl crystals from various alluvial deposits; the largest crystal is about 4 cm wide Collection...pegmatites. Most ore beryl occurs in massive pegmatite zones where crystals may reach considerable size...can be found adjacent to the core margin of the pegmatite and in Suggested Chromophores for Beryl Color-generating...Mn2+, Mn3+ Sinkankas (1981) Crystal field transition Crystal field transition Platonov, Taran & Klyakhin |  | | Journal (issue) | | from Brazil – The Neon-Blue Burn Mozambique Paraiba Tourmaline Deposits – An Update Paraiba – A Miner’s...Madagascar, along with rubies in Greenland and Mozambique. Miners such as Fura, which just acquired Mustang...Stones bvba. Traveling the world to source the best deposits and supply a vast range of gemstones for an international...with emerald and ruby assets in Colombia and Mozambique, respectively, announced recently that it has...has acquired nine ruby assets in the Mozambique. Once the transaction is completed, Fura will hold the |  | | Journal (issue) | | the submission of articles on all aspects of the field. Please see the Author Guidelines at gia.edu/gemsgemology...published in G&G are also welcome. Please note that Field Reports, Lab Notes, Gem News International, Micro-World...tourmalines, which have traditionally been assumed to be elbaite species, as liddicoatite. 42 The Role of Silicon...chemical composition of jadeite from Japanese deposits. 68 pg. 49 Causes of Iridescence in Natural...Shigley, and Robert Weldon survey Brazil’s diamond deposits. This region has produced a significant number |  | | Journal (article/letter/editorial) | | species elbaite (Dunn, Appleman, and Nelen 1977). The relationship between liddicoatite and elbaite seemed...highlands of the Vakinankaratra region, Antananarivo Province, near Antsirabe and south of Betafo, near the...locality at Anjanabonoina, Antsirabe, Madagascar. Field of view about 3 cm wide. John Betts Fine Minerals...color zones. Because of its physical similarity to elbaite and compositional variations in OH and F, chemical...liddicoatite is reported from the Ampanodiana South pegmatite in the nearby Andremesoa Commune. Other liddicoatite |  | | Journal (issue) | | tourmalines, mainly green, blue, pink and red elbaite, including their gemmological properties and significant...recovered from granitic pegmatites and detrital deposits. Tourmaline-bearing pegmatites, which commonly...producing tourmaline is the 'Eastern pegmatitic province' of Minas Gerais. One general and three detailed...specific areas show the location of the tourmaline deposits, and their regional zonation and age are briefly...produces detrital deposits, eluvial and alluvial. Only eluvial deposits sometimes yield deposits of economic |  | | Book | | 2013). MALAWI Mount Malosa, Chilwa alkaline province, Zomba district. "Illite" is the name of a series...Administered Tribal Areas and North West Frontier Province. Ilmenite crystal clusters to 12 cm across have...Mountain, Warsak district, North West Frontier Province. Surface diggings worked by local people on Zagi...Ilvaite occurs in the wallrock surrounding the manto deposits of polymetallic ores in the Taxco district, commonly...best of the classic ilvaite specimens of the skam deposits of Seriphos were collected near the beginning |  | | Journal (issue) | | the bright orange garnets from this century-old pegmatite locality. NOTES AND NEW TECHNIQUES 296 Pink...the submission of articles on all aspects of the field. Please see the Guidelines for Authors in this issue...of the publisher. ABOUT THE COVER The Ramona pegmatite district in southern California was the world’s...University in 1995, studying emerald and tourmaline deposits in the Karakoram Mountains of Pakistan. More recently...to obtain first-hand knowledge of important gem deposits for the journal. As for me, it’s been my pleasure |  | | Journal (issue) | | similar jadeite has been recovered from secondary deposits for many years, but only in very small amounts...displays bluish-green / light yellow pleochroism. Field of view 4.25 mm. Plane polarized light. Hte long...ofchromerich jadeite in hte long sein jadeite jade. Field of view 4.26 mm across. Cross polarized light. ...residual crystal in hte long sein jadeite jade. Field of view 4.8 mm across. Plane polarized light. 323...is rhodochrosite, common in many Peruvian ore deposits. The best known of these are the most beautiful |  | | Book | | crystals on large, well-formed grey graphite crystals, field of view 3 cm - Philip Hitge specimen, Bruce Cairncross...Index 141 FOREWORD The geology along the Mozambique Mozambique, particularly Orogenic Belt - which runs...and evolution of the Neoproterozoic Metamorphic Mozambique Belt and associated mineralisation in East Africa...well-endowed with gemstones, but they do have economic deposits that, from time to time, produce interesting mineral...rock type helps prospectors to discover gemstone deposits. Most gemstones are rare, with the rarity factor |  | | Journal (issue) | | tourmaline mine, Luc Yen Mining District, Yenbai Province, Vietnam . . . . . . . . . . . . . . . . . . ...Tourmaline from the Minh Tien pegmatite, Luc Yen Mining District, Yenbai Province, Vietnam . . . . . . . ..... 495 COVER: ELBAITE on Quartz, 12 cm, from the Minh Tien pegmatite, Yenbai Province, Vietnam. Frédéric...above the title, representing the country, state, province or city in which the locality is situated. Occasionally...So I changed the soccer stripes to an all-black field behind the mining company logo, and thought at last |  | | Journal (issue) | | U. Falster Explores the vivid “canary” yellow elbaite from the Lundazi District of eastern Zambia, the...from Myanmar • Cu-bearing tourmaline mines in Mozambique • New Cu-bearing tourmaline from Nigeria • Synthetic...the submission of articles on all aspects of the field. Please see the Guidelines for Authors on our Website...Tanzanian bush at Tunduru, spitting distance from Mozambique, on the Muhuwesi River. I’m haggling over a parcel...article titled “Copper-bearing Tourmalines from New Deposits in Paraíba State, Brazil” for the journal’s Fall |  | | Book | | 463 Aqu:1111:irine and heliodor 485 The beryl of Alto dos Amfincios 486 Morganite, goshenite :ind green...Tourmaline, t 1e rainbow stone 496 The magic colors of elbaite tourmaline 500 The habits of tourmaline crystals...The CTeology of tourmaline deposits 506 Brazi 's main tourmaline deposits 508 Qistrict of Sao Jose da...bamb11rro of the Lavra do Jonas 577 The Pegmatitic Province of Paraiba, Rio Grande do Norte and Ceara 586...graphite, magnesite and countless other ores. In the field of collection and gemological minerals, Brazil is |  | | Journal (article/letter/editorial) | | along with diverse geological settings of topaz deposits have contributed to the general interest in topaz...2015 ) Figure J. Location map of major topaz deposits. 1. San Diego County, California pegmatites;...Mexico; 5. Appalachian pegmatite belt; 6. Rondoni, Brazil; 7. eastern Brazil pegmatite belt (includes Ouro...Volyn and Kiev pegmatite districts, Ukraine; 11. Ural Mountains, Russia; 12. Gilgit pegmatite district and...district, Nigeria; 14. Namibia pegmatites; 15. Mozambique pegmatites; 16. Madagascar pegmatites; 17. gem |
|
