 | Lynch, E. P., Costanzo, A., Feely, M., Blamey, N. J. F., Pironon, J., Lavin, P. (2014) The Piteiras emerald mine, Minas Gerais, Brazil: fluid-inclusion and gemmological perspectives. Mineralogical Magazine, 78 (7) 1571-1587 doi:10.1180/minmag.2014.078.7.04 | Journal (article/letter/editorial) | | Vol. 78(7), pp. 1571–1587 The Piteiras emerald mine, Minas Gerais, Brazil: fluid-inclusion and gemmological...gemquality faceted emeralds from the Piteiras Mine, Minas Gerais, Brazil. These data complement those of Rondeau...al. (2003) who also presented analyses of the Piteiras emeralds. Emeralds are found typically as euhedral-to-anhedral...euhedral-to-anhedral crystals disseminated in biotite-phlogopite schist and range from 0.5 to 50 mm long. Emerald...006 0.008) and specific gravity (2.65 2.78), the Piteiras emeralds fall within the expected range for metasomatic |  | Giuliani, Gaston, Groat, Lee A., Marshall, Dan, Fallick, Anthony E., Branquet, Yannick (2019) Emerald Deposits: A Review and Enhanced Classification. Minerals, 9 (2) 105 doi:10.3390/min9020105 | Journal (article/letter/editorial) | | sub-types hosted in: (IA) Mafic-ultramafic rocks (Brazil, Zambia, Russia, and others); (IB) Sedimentary...sub-types hosted in: (IIA) Mafic-ultramafic rocks (Brazil, Austria); (IIB) Sedimentary rocks-black shale...ct. Insufu rough emerald extracted from the Kagem mine in 2015. Lastly, on the 2th of October, the remarkable...(“the lion elephant”) was extracted from the same mine [3]. Other giant crystals have been discovered in...emerald crystals was discovered in the Carnaíba mine, Brazil; the specimen weighed 341 kg with 1.7 million |  | | Report (issue) | | and trapiche emerald Rupert Hochleitner Brazil: Minas Gerais, Bahia, Ceara, Goias and Tocantins . . ...Asia: Pakistan, Afghanistan and India .......6 0 Old Mine Emeralds . . . . . . . . . . . . . . . . . . . ...Maharajahs and Maharanis held large emeralds (see "Old Mine Emeralds" page 62). The Color of Islam Emerald...quality. It was the gift of Emperor Dom Pedro I of Brazil to the 6 th Duke of Devon- shire. Also housed...some of the most productive emerald localities in Brazil, for example, more than 77 percent of the emerald |  | | Journal (issue) | | Pearl Testing 36 Emeralds from South America – Brazil and Colombia 48 Clinohumite – The Mountain Fire...rise of new economies such as China, India, and Brazil. The challenges have been numerous as these new...every ICA member, I would like to thank the IBGM in Brazil along with every company, individual, and government...Opening a Tsavorite Mine T anzaniteOne Limited is working towards opening a tsavorite mine not far from its...Tanzania, about 20 kilometers from its tanzanite mine. The project has a total indicated resource of 1 |  | | Journal (issue) | | INSTITUTE OF AMERICA Emeralds from Northeastern Brazil Diamantine: Coated Cubic Zirconia Precision Measurement...the Fazenda Bonfim Region, Rio Grande do Norte, Brazil J. C. (Hanco) Zwaan, Dorrit E. Jacob, Tobias Häger...Polished emeralds from this deposit in northeastern Brazil, discovered in 2006, typically display a saturated...from Pakistan • Cat’s-eye emerald from Belmont, Brazil • Meteorite watches • Purple common opal from Mexico...of the publisher. About the Cover For decades, Brazil has been one of the world’s major sources of fine |  | | Journal (issue) | | Decade of Change A New Era for the Historic Coscuez Mine Esmeraldas Santa Rosa: Our Wealth is Green Rediscovery...More Exquisite Emeralds Magnificent Old Mine Emeralds 143 Mine Visit A Visit to Colombia’s “Green” Emerald...Origins and Appellation President Clement Sabbagh, Brazil Vice Presidents Damien Cody, Australia Nirmal Kumar...Kumar Bardiya, India Treasurer Marcelo Ribeiro, Brazil Secretaries Bruce Bridges, USA Santpal Sinchawla...acquiring the majority stake in the iconic Coscuez mine in Colombia. The 2015 Symposium focused on the government’s |  | | Journal (issue) | | from Brazil shows chatoyancy caused by flat hollow channels. Four-rayed star aquamarine from Brazil has...the c-axis. A tourmaline-quartz combination from Brazil has an iridescent chatoyancy Grey orthoclase moonstone...cat's-eye from Brazil A very unusual example of a cat's-eye was purchased in Brazil by the author in...measuring Figure 1: Chatoyant pale blue topaz from Brazil weighing 152.15 ct. Photo by J. Hyrsl. 32.94 x...described two topaz cat'seyes, one blue of 7.98 ct from Brazil and another colourless of 12.20 ct from Sri Lanka |  | | Journal (article/letter/editorial) | | emerald mines in Colombia are becoming depleted. Brazil currently accounts for approximately 10% of world...samples from the Lened occurrence in Canada, the Muzo mine in Colombia, the Mohmand district in Pakistan, and...export values of emerald rough (Zwaan et al., 2005). Brazil currently accounts for approximately 10% of world...serpentinite bodies, which produced weakly developed phlogopite reaction bands containing emerald. The temperature...formation was estimated to be 550 °C. Ar–Ar dating on phlogopite gave a Lower Jurassic age at 193 Ma (Sabot et |  | | Book | | of the Stone in Myth and in Rock 9 3 From Mine to “Mine”: The Emerald Business 21 4 Emeralds in World...could identify the country and sometimes the actual mine a particular stone came from. However, vaporizing...of some ocean. The glorious emeralds of the Muzo mine of Colombia are embedded in calcite veins found...been described for precious gems. r From Mine to “Mine”: The Emerald Business The rarity of emeralds...percent of this in Colombia, followed by Zambia, then Brazil, Pakistan, Zimbabwe; much smaller amounts are found |  | | Journal (issue) | | the development of Australia’s first major diamond mine, the world’s largest source of diamonds by volume...Benitoite mine sold • Emeralds from Laghman, Afghanistan • Emeralds from Piteiras, Brazil • Educational...“close-up” map shows the location of the three main mine sites discussed in this article: Kormos, Oxbow,...1983, when mining started at the open-pit Kormos mine, high-quality material has been offered regularly...the only major producer. Today, work at the Kormos mine is temporarily suspended, and production comes from |  | | Book | | BARTORELLI ::• . . .. MINERALS & PRECIOUS STONES OF BRAZIL Sponsored by: VALE MINISTER.IO DA CULTURA ©...Lavra do Sapo, Ferruginha, Conselheiro Pena, Minas Gerais. Collection of Alvaro Lucio. Photograph taken...Brasileira do Livro, SP, Brazil) Cornejo, Carlos .Minerals & precious stones of Brazil. Carlos Cornejo, Andrea...3. Minerals - Brazil 4. Minerals- Classification 5. Mineralogy 6. Mineralogy - Brazil - History 7. Precious...Precious stones - Brazil I. Bartorelli, Andrea. II. Title. 09-10025 Cover photograph: Crystal of brazilianite |  | | Book | | Granitic Pegmatite, Parelhas, Rio Grande do Norte, Brazil Reprinted from: Minerals 2019, 9, 233, doi:10.3390/min9040233...Province (BPP) from Rio Grande do Norte in Northeast Brazil. The Boqueirao granitic pegmatite is classified...sources (i.e., Afghanistan (Panjsher Valley), Brazil (Itabira), Colombia (Coscuez), Ethiopia (Shakisso),...Granitic Pegmatite, Parelhas, Rio Grande do Norte, Brazil. Minerals 2019, 9, 233. [CrossRef] Huong, L.T.-T...Granitic Pegmatite, Parelhas, Rio Grande do Norte, Brazil Sabina Strmić Palinkaš 1, *, Ladislav Palinkaš |  | | Journal (issue) | | sunstone from India • Staurolite in kyanite from Brazil • Obsidian with spessartine inclusions • Fluorite...were occasional finds over the centuries in India, Brazil (Cassedanne, 1989), and perhaps elsewhere, the...been cut from a large crystal found at the Finsch mine in South Africa. Figure 2. The Tiffany yellow diamond...of rough recovered from a claim on the Kimberley mine was later fashioned into the Tiffany diamond (again...(again, see figure 2). In 1964, the Dutoitspan mine yielded a spectacular 253.70 ct transparent yellow |  | | Book (edition) | | Salinas, Peru, H Variscite, xx 5 mm, Iturnbiara, Brazil, H Rhodocbrosite, polished, 50 mm, Capillitas,... China, H Page 1: MuscO\ite. 45 mm, Linopolis, Brazil, H Page 2: Vivianite, I 00 mm, Huanzala, Bolivia...Brazilianite, 35 mm, Linopolis, Brazil, H Page 13: Gold, 35 mm.Eagle's est Mine, California, G Publi!>hed...Rice, Dolores co., both Colorado, at the Questa mine, Taos co., New 1994. Abernathyite K2[(UOJ 2l(AsO_J2]•6HzO...Harding Co .. South Dakota. and at the Fuemrole No2 mine, Emery co .. Utah. Also at Menzenschwand Scbwarzwald |  | | Journal (issue) | | News International • Australia’s Ellendale diamond mine opens • Aquamarine and spessartine from Tanzania...• New morganite mine in Madagascar • Namibian gem localities • New opals from Brazil • Bicolored spessartine...spessartine from Brazil • Pink/yellow spodumene from Afghanistan • Glass imitations encountered in Namibia...diamonds shown here are from Canada’s Ekati Diamond Mine™, which started production in 1998. The necklace...and the staff of Amsterdam Sauer Rio de Janeiro, Brazil RTL TRIBUTE GEMS & GEMOLOGY FALL 2002 207 |  | | Journal (issue) | | moving products from mine to consumer. The main cover image was taken at the AnahÌ mine in Bolivia, a major...of the company (Even-Zohar, 2007). Because of the mine closures, De Beers’s market share by volume fell...pink diamonds (0.51 and 0.55 ct) from the Argyle mine in Australia were part of the 2007 Argyle pink diamonds...had acquired a 32.8% interest in Angola’s Catoca mine in the early 1990s. Commissioned in 1997, Catoca...mining giant Rio Tinto opened Canada’s second diamond mine, Diavik, with 60% ownership. Rio Tinto had established |  | | Journal (issue) | | Tanzania, around the end of the 1960s, and the mine was active for about a decade. Since then, gem-quality...have been documented in these emeralds, such as phlogopite, talc, albite and possibly quartz (Gübelin &...mentioned in the literature, in samples from Austria, Brazil, China, Egypt, India, South Africa and Ukraine...OF GEMMOLOGY, 38(2), 202 2 stones from Bahia, Brazil (Santiago 2015) and opaque to partially translucent...from Turkey, 1.52 ct from Peru and 0.81 ct from Brazil; front row, left to right: 4.45 and 6.17 ct from |  | | Book | | Springfield show ( 1995: 582). Madawaska [Faraday] mine near Bow Lake, Hastings County. Some of the world's...property of, the old Madawaska uranium mine (called the Faraday mine before 1964). The mineral assemblage...Trimble and Cowgill, 1977). LATINAMERICA BRAZIL Jacupiranga mine, Sao Paulo. Among the crystallized minerals...Oblast. Alpine-type clefts in the famous Dodo quartz mine commonly contain ilmenite, occurring as lustrous...ilmenite crystals as described here for the Dodo mine. In general, ilmenite crystals from the Subpolar |  | | Report (issue) | | porphyry Mo and W-Mo-Be skarn deposits northwest of Mine Hill and south of Middle Hills. At a cut-off grade................................. 8 TABLE 2. World mine production of beryllium, in metric tons (Jaskula...Other countries include Portugal, Madagascar, and Brazil. These figures do not include possible production... Production and reserves from the Spor Mountain mine owned by Brush Wellman (metric tons Be content,...world account for current production; Spor Mountain mine in Utah is the largest and most important deposit |  | | Journal (issue) | | emeralds were purchased or collected directly from the mine areas. The authors acquired the other samples at...Sandawana, Zimbabwe ItabiraNova Era, Brazil Santa Terezinha, Brazil Swat, Pakistan Panjshir, Afghanistan...famous localities in South America (Colombia and Brazil), Asia (Russia, Pakistan, and Afghanistan), and...(Kafubu, Zambia; Sandawana, Zimbabwe; and Itabira–Nova Era, Brazil) Group 2—Crystallization without the involvement...Category C: Metamorphic phlogopite schist– related emerald (Santa Terezinha, Brazil) • Category D: Talc-carbonate |  | | Journal (issue) | | 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...Northwest Territories, Canada; Salininha in Bahia, Brazil; Ma- 108 EMERALDS FROM BYRUD, NORWAY lipo in...assets sold to the Cornish Development Co. Ltd. The mine was subsequently abandoned in 1909 (Nordrum and...and a small workshop were reportedly built at the mine, but few vestiges are visible today. However, production |  | | Journal (issue) | | associated with olivine in marble matrix was seen at a mine in the Luc Yen district. Photo by Vincent Pardieu/GIA...different phyllosilicates, mainly clinochlore and phlogopite. Humite was not observed in the marble, although...department. He researches and documents the entire mine-to-market gem and Armil Sammoon Andrew Lucas jewelry...Group in Casablanca obtained exclusive rights to the mine (an open quarry, in accordance with Moroccan law)...arid and forbidding environment (figure 3). The mine is located 6 km east of the Tagragra Tata Precambrian |  | | Journal (issue) | | frequently in quartzes, i.e. the Dauphiné and the Brazil laws (see e.g. Frondel, 1962), cannot be responsible...Crystallized and massive rose quartz deposits in Brazil. Journal of Gemmology, 22 (5), 273-86 Frondel,...described from a pegmatite at Limoeiro, Minas Gérais, Brazil, and crystals of montebrasite of exceptional...minerals and with amblygonite is discussed. M.O'D. Piteiras, Brasilien: erfolgreiche Smaragdsuche mit modernen...at the Piteiras emerald deposit in Minas Gérais, Brazil where emerald is found with phlogopite and biotite |  | | Journal (issue) | | North Carolina • Emerald-in-matrix from Bahia, Brazil • 5th century garnet jewelry from Romania • Natural...reports on copperbearing tourmalines from Paraíba, Brazil; rubies and sapphires from Vietnam; and rubies...garnet (andradite-grossular), and mica (probably phlogopite), consistent with the minerals accompanying scapolite...Tajikistan, Kenya, Madagascar, Mozambique, Tanzania, and Brazil. The scapolite group consists of two main end members:... Madagascar a Tanzaniaa Tanzaniab Myanmar a,b Brazil (Espirito Santo)a Switzerland (Lake Tremorgio)a |  | | Journal (issue) | | rhodochrosite, 2.59 ct Paraíba tourmaline from Brazil, 8.51 ct Sri Lankan spinel, 13.00 ct Madagascar...“padparadscha” sapphire, 2.12 ct Paraíba tourmaline from Brazil. Photo of stones © GIA and Harold & Erica Van Pelt;...Shown here is the recovery plant at the Jwaneng mine in Botswana. Photo courtesy of Debswana. another...a poster on golden rutilated quartz from Bahia, Brazil. Near right: Designer Michael Bondanza discusses...2020 Yasukazu Suwa I t took about 2,700 years to mine and fashion an estimated 0.8 tons of diamonds before |
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