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Danburite from
Rakwana, Ratnapura District, Sabaragamuwa Province, Sri Lanka


Classification
Species:Danburite
Formula:CaB2Si2O8
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Danburite data
Locality Data:Click here to view Rakwana, Ratnapura District, Sabaragamuwa Province, Sri Lanka
Data Identifiers
Mindat Occurrence Record ID:931729
Long-form Identifier:1:3:931729:1
GUID (UUID V4):bb508c08-06a8-4295-a9fa-5e37f484f45e
References
Reference Search (possible matching items)
Book
notable example in this category is the Nuristan District of Afghanistan, which over the past 10 years has...Saijo, Iyo Province, Ehime Prefecture, Island of Shikoku Ashio Mine, Shimotsuke Province, Tochigi Prefecture...Arakawa Mines, Ugo Province, Akita Prefecture, Honshu The Obira Mine, Bungo Province, Oita Prefecture,... Hyuga Province, Miyazaki Prefecture, Kyushu Otome Mine, Suisho Pass, Kurobera, Kai Province, Yamanashi...Prefecture, Honshu Mino Province, Gifu Prefecture, Honshu; and Omi Province, Shiga Prefecture, Honshu
Journal (issue)
instrumentation such as LA-ICPMSā€”once primarily the province of academiaā€”became a fixture in many gemological...were combined under the jurisdiction of the U.S. District Court of New Jersey 168 PRODUCTION AND MARKETS...addition to the traditional spinel sources of Sri Lanka, Pakistan, and Myanmar (spinel, if polished elsewhere...start operations at the Kagem mine in the Kafubu District, historically Zambiaā€™s largest source of emeralds...ultimately decided in eBayā€™s favor when the U.S. District Court of New York determined that the burden of
Journal (issue)
Prospectors' Guide Map to the Gem Deposits of Sri Lanka C. B. Dissanayuke and M.S . Rupasinghe Two Treated-Color...of metamorphic origin (from localities such as Sri Lanka, Myanmar, Please see LETTERS, p. 226 Figure B...society, were Bahrain in the Persian Gulf, Ceylon (now Sri Lanlza), and Australia. Freshwater pearls came from...sapphires were coming from Kashmir (figure 71, Ceylon (Sri Lanlza), Australia, and the U.S. The American ' N...Gemstone Resources of China The Changma Diamond District, China Gemstone Carving in China: Winds ol Change
Journal (issue)
not changed colour. The other stones are from Sri Lanka and are not treated; they weigh 9.85 ct (green)...mine, Kha district Looi mine, Kha district Looi mine, Kha district Looi mine, Kha district Notes Natural...mine, Kha district Finest. Only white after initial heating 6 7 Various, Champasak district Various...Champasak district 8 9 Various, Champasak district Pailin district 10 11 12 Looi mine, Kha district Looi...Looi mine, Kha district Various, Champasak district White stones after full heating Pre-heated to facilitate
Book
A CHANGING PLANET 11 Vanadinite, San Carlos district, Chihuahua, Mexico * 8 x 4 x 2 cm Mineral Species...such as Porcupine and Hemlo districts; Noranda district, Quebec. USA: Mother Lode belt and others in...Localities Canada: Cobalt mining district and Thunder Bay District, Ontario. USA: several localities... Wire silver, Silver Islet Mine, Thunder Bay District, Ontario, Canada * 11.5 x 14x 11 om Silver has...xe2e0x Gem Copper, New Cornelia (Ajo) Mine, Ajo district, Arizona, USA 6 Keo lecm LEFT: Au (China, Eastern
Book
pyrochlore) and zircon crystals are common in Sri Lanka gemstones. The more important syngenetic mineral...mica in andalusite, chrysoberyl, kornerupine and Sri Lanka sapphire ā€¢ calcite in Burmese ruby and spinel;...andalusite ā€¢ sphene in ruby and spinel ā€¢ uraninite in Sri Lanka sapphire ā€¢ zircon in corundum. Apatite is a characteristic...well seen in some green and brown zircon from Sri Lanka. The process is called ā€˜metamictization and the...complex patterns, especially in sapphires from Sri Lanka. Burmese ruby contains short rutile needles, calcite
Journal (issue)
apatite, barite, beryl (morganite), wollastonite, danburite, datolite, quartz, calcite, corundum, microcline...inclusions. Š”gophŠ¾tolŠømiŠæŠµsceRŠµ (77Šš). Liaonin Province, China. Specimen: Yana Baa. (right) Photoluminescence...crystal (about Š— т т across) with vacuoles. Liaonin Province, China, Specimen: Yana Bao. (left) Laser luminescence...vacuoles and mineral inclusions (10'). Liaonin Province, China. Specimen: Boo Yana. (left) Luminescence...found among the Chinese crystals from the Liaonin Province, Northeastern China (samples of these crystals
Journal (issue)
occur in the John Saul ruby mine, Taita-Taveta District, Kenya (Simonet, 2000) which is located just north...change to green by heating of red corundum from Sri Lanka, and reversion to red by cooling. Thermochromy...of four green tourmalines from the Taita-Taveta District, Kenya. For the present study, the contents of...2000. Geology of the Yellow Mine (TaitaTaveta District, Kenya) and other yellow tourmaline deposits in...deposits in the Isalo area of Madagascar, from Ratnapura, Sri Lanka and from Mogok, Myanmar, a nearly complete
Book
California. USA Foliated aggregates are found in Sri Lanka (Radegara, Galle region). Accumulations in Buckingham...crystals up to 30 mm (1VĀ» in) across, come from Hunan province, China. Application: As ore. Gudmundite FeSbS...Norway: large crystals also occur in the Temiskaming district, Quebec, Canada; tabular crystals up to 120 mm...mm (25/32 in) across found at Chenzhou, Hunan province, China. Application: Pb, Cu and Sb ore. ORTHORHOMBIC...Czech Republic. It is common in the Cocur d'Alene district, Idaho, USA. Acicular crystals up to 30 cm (12
Book (edition)
in brackets) arc shown in the following list: Sri Lanka (Ceylon), Malagasy Republic (Madagascar), Kampuchea...ambergite Zi rcon Gamet Cordieritc Tourmali ne Quartz Danburite J adeite Axinitc 10 9 8Ā½ 8 8 8 7? n7Ā½ 7!...Andalusitc Fluorspar Tourmaline Euclasc A m blygonite Danburite Datolite Nephrite Brazilianitc Phenakite 3. 53-3...Jadeite Datolitc Turquoise Apatite Andalusite Danburite Tourmaline A mblygonite Topaz Nephrite Hambergite...in Minas Gcrais arc situated i n the Diamantina district, whilst in Bahia the Sincuramincs have been very
Book
California, USA Foliated aggregates are found in Sri Lanka (Radegara, Galle region). Accumulations in Buckingham...up to 30 mm ( P/16in) across, come from Hunan province, China_ Application: As ore. Gudmundite FeSbS...Norway; large crystals also occur in the Temiskaming district, Quebec, Canada; tabular crystals up to 120 mm...mm (25/32 in) across found al Chenzhou, Hunan province, China. Application. Pb, Cu and Sb ore 56 ORTHORHOMBIC...Czech Republic. lt is common in the Coeur d' Alene district, Idaho, USA. Acicular crystals up to 30 cm ( L2
Journal (issue)
and from historical gemmology in Afghanistan, Sri Lanka or the UK to the criteria for distinguishing natural...the Chuncheon area, north east of Seoul, in the Province of Kangwondo, which is in the central part of...light, similar to those from Sri Lanka. The key difference between Burma and Sri Lankan sapphires is saturation...specimens are known, including a 40.3kg crystal from Sri Lanka which contains gemmy portions (see Table II)....Louis XIV. Said to be Bengal; probably Burma or Sri Lanka Date unknown Museum National D'Histoire Naturelle
Journal (issue)
First Transparent Faceted Grandidierite, from Sri Lanka Karl Schmetzer, Murray Burford, Lore Kiefert,...Internal strain around this tiny zircon crystal in a Sri Lankan spinel is made visible using polarized light...and varieties, including amethyst, andalusite, danburite, garnet, goshenite, scapolite, topaz, tourmaline...reported previously from only one source in the province of Quebec, Canada (Grice et al., 1987), and only...first transparent faceted grandidierite, from Sri Lanka. Gems & Gemology, Vol. 39, No. 1, pp 32ā€“37. Shigley
Book
Major sources: Burma, Thailand, Cambodia, Sri Lanka, India, Australia, Kenya, Tanzania, Montana and...Stone Tract in Upper Burma to the gem gravels of Sri Lanka, we find the historical occurrences of rubies...Burma 67 Sapphire - Burma 75 Ruby and sapphire - Sri Lanka 77 Ruby - Thailand and Cambodia 80 Sapphire -...273 Sri Lanka (Ceylon) 273 History 273 Mining areas 276 Mining methods 278 The market in Sri Lanka 280...a polished sword, the Bhramara {the black bee), Sri Krishna (a Hindu God represented as beautiful gray)
Book
finest star ruby on public display. A product of Sri Lanka's gem gravels, today it resides at the Smithsonian...origin is uncertain, but probably emanates from Sri Lanka. Today it rests in New York's Amer1can Museum...473 History 474 Luc Yen 474 Quy Chau (Bu Khang District) 475 Other Vietnam corundu.n1 localities 478 Mining...History 390 Ruby & sapphire variecies 395 Origin of Sri Lanka's corundum deposits 395 Mining areas 396 Mining...marker in Sri Lanka 399 Characteristics of Sri Lanka.n corundLm1s 402 Bibliography- Sri Lanka 405 C Ruby
Journal (issue)
located ~3 km from An PhĆŗ in the Lį»„c YĆŖn District of YĆŖn BĆ”i Province. On separate buying trips to Lį»„c YĆŖn...2002. Gem-quality chondrodite from Balangoda, Sri Lanka. Journal of Gemmology, 28(3), 162ā€“168, https://doi...g. rough or faceted ruby, sapphire, peridot, danburite, etc.). In addition to the main building, there...Nuuk. This satellite image of the FiskenƦsset gem district shows the approximate outline of the area where...sapphires, this also includes the placer deposits of Sri Lanka and Madagascar (Ilakaka). Rubies and pink sapphires
Book
the platy FIG. 2.3. Washing gem gravels in Sri Lanka (Ceylon). * Placer is pronounced plasā€˜er; rhymes...in precisely determined angular positions. In Sri Lanka gems are still cut, as they were hundreds of years...present city of Kimberley. The diamonds in this district were first found in altered kimberlite called...Matrix). The principal mines in the Kimberley district are the Kimberley, Du- Toitspan, De Beers...essentially nonfluorescent, except some from Sri Lanka, orange Kashmir, under and Montana longwave
Book (edition)
Cand CSPG Pennskiye gubemskiye wdomo.sti (Perm district ga=elle) Pl,ilosopl,ical Maga=ine Periodico de...Aktash mercury deposit, Kurai Range. Kosh-Agach district. Gomiy Altay. Russia. 58. 562. l'MR M" 111-129...Provvidenzakaolinquarry,Allumierc,Tolfa Mount district,Roma Province,Lazio,ltaly,NJMM 1976,40~17 (str.),AC 18...NaB1OiOH),. mon., Tincalayu borax deposit, Salta Province, Argentina. 52, 935-945, 60, 879-883 (str.) D...Wilagedera iron orc prospcct.. ā€¢orth Western Province. Sri Lanka, CM 36. 905-912 .\lica group D Anapaite
Book
chrysoberyl, FIG. 2.3. Washing gem gravels in Sri Lanka (Ceylon). * Placer is pronounced plas'er; rhymes...in precisely determined angular positions. In Sri Lanka gems are sti 11 cut, as they were hundreds of...12.22). This FIG. 12.22. Gemstone cutting in Sri Lanka (Ceylon) using a hand-powered abrasive wheel....present city of Kimberley. The diamonds in this district were first found in altered kimberlite called...Matrix). The principal mines in the Kimberley district are the Kimberley, DuToitspan, De Beers, Wesselton
Report (issue)
ā€”The Mineral Resources of the North-West Frontier Province. By A. L. Coulson. (Prioe As. 14 or la. 3d.) No...after showers of rain at Wajra Karur, Anantapur district. There is an igneous pipe or neck, of bluish tuff...zircon, beryl, quartz, scapolite, apatite and danburite. Since the Mogok Stone Tract is the most important...the great gem producing countries of the world. Ratnapura means ā€˜a city of gems ā€™ā€”Here also the sapphire...mining districts are those about Balanguda, Rakwana and Ratnapura. The annual output of gems in Ceylon is
Book
cheap. For exan, ple, in Indo nesia, lvfala ysia, Sri La nka. a nd Ind ia, local inhabitants search ri...dep o.siL.s, .such a .s the ge1n grave ls o f Sri Lanka and Burma (Ivlyann1ar), contain ~1 d i, e rse...elsewhe re. Jetceler'.~ worksbop in the dia m ond district of 1\Ju mbai. I ndia CHINA China is in vesting...ts. \Xfuz ho u, a s n1a ll c ity in G ua ngxi Province, is China's largesL costun1e je w e lry cente...in South Africa, Bo cs,~rana, Russia, China, Sri Lanka, T hailand , Vietnall'1, and M auritius. DIAMOND
Book (edition)
Garnet ā€¢ ā€¢ ā€¢ Cordierite Tourmaline Quartz ā€¢ ā€¢ ā€¢ Danburite Jadeite ā€¢ ā€¢ ā€¢ Axinite ... Spodumene Kyanite Idocrase...Andalusite Fluorspar Tourmaline Euclase ā€¢ ā€¢ ā€¢ Danburite Nephrite Phenakite Lapis-lazuli Beryllonite Turquoise...Turquoise ā€¢ ā€¢ ā€¢ Apatite ā€¢ā€¢ā€¢ Andalusite ā€¢ ā€¢ ā€¢ Danburite ā€¢ ā€¢ ā€¢ Tourmaline Topaz ā€¢ ā€¢ā€¢ Nephrite ā€¢ ā€¢ ā€¢ Hambergite...in Minas Geraes are situated in the Diamantina district, whilst in Bahia the Sincura mines have been very...corundum in a sandy clay at Battaqibong ; the district around ChantaJ?un, near Bangkok, yields rubies
Journal (volume)
stone of lower Franceville formation, in the province of Upper Ogooue on the road between Franceville...reland. But finer gems ore brought from the granite district of Nertschinsk, in S i b e r i a , a n d a l so...Peruvians obtained many emeralds from the barren district of Atacama, and in the times of the Conq uest...which Pliny and others mention. I n the Wa ld district magn ificent crystals hove been found embedded...the center of the gemĀ­ handling industry, is Ratnapura, or "City of Gems." From an area of about 800
Book (edition)
Benitoite Lapis-lazuli Berylionite PoUucite .. Danburite Phenakite Nephrite .. Tourmaline Euciase * . ...Benitoite # * # 0 * Jadeite Spodumene . Quartz Danburite Grossular Spessartine . Tourmaline . Cordierite...hypersthene, cordierite, fibrolite, staurolite, danburite, beryllonite. ā€” Monoclinic System. ^Three crystallographic...Scapolite Cordierite . . . . . . . . Danburite . , Corundum . . . . Kornerupine , 0*007...1-56 1.56-1.59 I ā€¢60-1*62 i-6i Topaz Tourmaline Danburite j Andalusite Apatite Jadeite Euclase Phenakite
Journal (issue)
deposits of the Antelope (Majuba Hill) mining district, Pershing County, Nevada. M.S. thesis, University...m a d e ā€ ), 1.2 cm , from northw estern Hunan province, China. D. J. Parsons speciĀ­ men. Figure 9. Bertrandite...specimens; the locality is Sierra Albarrana, Cordoba Province. Dramatically sexier, though, as well as far more...alluvial diamond mining in northwestern Hunan Province; in fact, Doug says, there are two or three presently...pyrrhotite; world-standard-setting black ilvaite; fine danburite and axinite; and a type of cubic fluorite so sharp
 
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