 | | Journal (article/letter/editorial) | | BEDS OF SRI LANKA NAWARATNE Department of Geology,Universityof Peradeniya,Peradeniya,Sri Lanka Even...Even thoughthe occurrenceof gold in Sri Lanka has been mentioned in chronicles of historical im- portance...confirmedby the officersof the Mineral Surveyin the Sabaragamuwa, centraland western provinces(Ceylon Administration...p. 57), showsthe known occurrences of gold in Sri Lanka. The area under considerationis a very rugged...mountainous regionin the southeastern part of Ratnapura (Fig. 1). Figure 2 showsthe detailedgeology of |  | | Book | | extensive native plantations in the Northern Province, especially in the Jaffna Peninsula and the outlying...and December, the rainy season of the Northern Province. Sugar or âjaggery â is prepared from sweet toddy...stone inthe Western Province, or of tamarind wood in the North-Central Province; in this a heavy pesile...to one family of ivory workers in the Kegalla District. The little figures of the last King of Kandy...Chief Priest are said to be contemporary portraits. Sri Wikrama Raja Sinha was the last king of the Suluwansa |  | | Journal (article/letter/editorial) | | widely distributed in the Central, Ova, and Sabaragamuwa provinces, and probably throughout Ceylon, but...amphibole, phlogopite (or biotite), scapolite, pyrite, sphene, and sometimes felspar, calcite, and spinel;...cutting the zircon granite (itself belonging to the Balangoda group,3 and forming an intrusive sill in 1 For...Charnockite Series or granulites) of Massena estate, Balangoda, appears to indicate that the date of the pyroxenite...plagioclase and diopside are the dominant minerals, and pyrite is also common. A section (1069) of the pyroxene |  | | Journal (article/letter/editorial) | | Gold Occurrences in Madagascar, South India and Sri Lanka: Significance of a Possible Pan-African Event...of Geology, University of Peradeniya, Peradeniya, Sri L a n k (Manuscript received April 25,2000; accepted...quantities mainly in the central and southern parts of Sri Lankd. Although gold is recovered mainly from river...also from a concordant quartz reef in central Sri Lanka and from other types of sediments such as marshy...surrounding dykes of ultramafic composition in southern Sri Lanka. The sedimentary gold has been interpreted as |  | | Journal (issue) | | Benton & S. Avella 83 Euhedral sinhalite from Sri L a n k a .........................................Chirnside, A. M. Davis, F. E. Lichte & K. J. Esposito Pyrite and marcasite intergrowth from northern Illin ois...Euhedral sinhalite crystals, reported here from Sri Lanka fo r the first time, have yielded morphological...minerals found in the alluvial gem deposits of Sri Lanka. It was first recognized and described as a new...(1961) noted sinhalite from Eheliyagoda in Sabaragamuwa Province. Gunawardene and Rupasinghe (1986) in cluded |  | | Journal (issue) | | (Brazil and Colombia), central and southern Asia (Sri Lanka, India, Afghanistan, Pakistan, Russia, and China)...come from a number of sources, but predominantly Sri Lanka. Accented with smaller diamonds, the 129 gem corundums...Boehm, March 1993. the alluvial gem fields of Sri Lanka and the pegmatite districts of Brazil. Efforts...Asia (Thailand, Cambodia, Myanmar, Vietnam, and Sri Lanka; again, see figure 1). Although mining continued...high-quality blue and pink sapphire came from Sri Lanka and, more recently, Madagascar (Suwa, 1999). In |  | | 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) | | Benton & S. Avel/n 83 Euhedral sinhalite from Sri Lanka ............................ 91 by L. C. Pit/lln11...C/1imside, A. M. Dnvis, F. E. Lichte & K. J. Esposito Pyrite and marcasite intergrowth from northern Illinois...Mure-Ii-April /995 EUHED RAL S INHALI TE CRYSTALS FROM SRI LANKA vďż˝v Lawrence C. Pitman, Cornelius S. Hu rlbut...Euhedral sinhalite crystals, reported here ji¡om Sri Lanka for the first time, have yielded mo,phological...minerals found in the alluvial gem deposits of Sri Lanka. It was first recognized and described as a new |  | | Journal (issue) | | Spinels of Mogok â A Brief Overview Spinels from Sri Lanka 54 The Spinels of Mahenge, Tanzania In Search...Responsibility 94 Book Review Discovering the Gems of Sri Lanka 98 100 108 113 Members 14 Saurabh Bansal Damien...Shirley Xue Li Zhang, Hong Kong E. Gamini Zoysa, Sri Lanka Advisors Jean Claude Michelou, Colombia Ruben...countries, as well as Ilakaka in Madagascar and Sri Lanka (Langerwey, 1974; Gorghinian et al., 2013). Until...in Sri Lanka for which the nature of the primary deposits is still unknown. Except for Sri Lanka, Image |  | | Journal (issue) | | ISSN: 0022-1252 J. Gemm., 1992, 23, 1 20 The Sri Lankan ruby: ruby: fact fact or orfable? fable? Ai...Aiahroof M.M.M. Mahroof Colombo, Colombo, Sri Sri Lanka Lanka Sri Lanka, or Ceylon as it was called until 1972...a hiatus in the Sri Lankan gem story. As I have written elsewhere: 'While Sri Lanka has had a good press...among those who had written, often admiringly, of Sri Lankan text writers writers like like Herbert Herbert...Anderson deal deal (and his his subsequent (and with Sri Sri Lankan Lankan gems gems more more as as aa class |  | | Journal (article/letter/editorial) | | 418 A. K. Coomdraswdmt/âThe Balangoda Group. the patience of the readers of the GEOLOGICAL MAGAZINE...âCONTRIBUTIONS TO THE GEOLOGY OF CEYLON : III. T H E BALANGODA GROUP. By A. K. COOMAKASWAMY, B.Sc, F.L.S., F...Mineralogical Survey of Ceylon. r P H E name ' Balangoda group' is proposed for a series of granitic X...in the Balangoda district, but evidently widely distributed over a large area between Balangoda and Hatton...ÂŤxposnre is on Massena estate, six miles from Balangoda; here a considerable mass of granite, fully two |  | | Book | | Enterprise as carried on, chiefiy in the Sabaragamuwa district; to the splendid opportunity presented for...round off the list of precious things for which Lanka and Serendib have been famous from time immemorial...Ceylon 64, 106 Baker, Sir S., on ... 31, 128, 139 Balangoda Beligal Korale 18, 24, 26, 33 ... Belihuloy a...Garnet. 29, 30, 97, 125, 141 Gem Searching in Sabaragamuwa. Ill, 119 Gems in Ceylon ...12, 26, 59, 67,...Ramboda ... ... ... ... 140 Rangala ... .2, 31, 104 Ratnapura 7, 28, 45, 59, 106, 128. 140 Report on Gold in |  | | Journal (article/letter/editorial) | | molybdenite, with trace amounts of chalcopyrite, pyrite, âwolframite,â and yellow ochres of Mo. On the... (1) Aspedammen, Ăstfold, Norway Balangoda, Ratnapura, Sri Lanka Severnyi area, Zardalek alkaline massif...Brazil (14) Ekanite Ca2ThSi8O20 Ehiliyagoda, Ratnapura, Sri Lanka (15) Huttonite ThSiO4 Gillespieâs Beach |  | | Journal (issue) | | scalenohedral calcite crystals. The Terlingua mercury district, with a few smaller, adjacent districts in Texas...Airport, brilliant, discoidshaped crystal groups of pyrite were found in dense blue clay tumed up in excavations...ditches, and many thousands of beautiful floater pyrite specimens were gathered. Very fine crystals of... 15 cm, from the Wagholi quarry complex, Pune District, Maharashtra, India. Don and Laura Aaron photo...Gracias mine, Diego de Almagro, EI Salado, Chaiiaral Province, Atacama Region, Chile. Don and Laura Aaron photo |  | | Journal (article/letter/editorial) | | collected from the Haputale escarpment near the Balangoda-Haputale road. The corundum here was in tabular...of gems found in alluvial deposits of the Ratnapura district now runs to several million pounds, it is...accompanied by accessory chondrodite, spinel, apatite, pyrite, and graphite, is exposed for 60 feet below the...contact the limestone contains up to 5 per cent of pyrite, but is otherwise unaltered. The syenite is a pale... Geology of the Haliburton and Bancroft areasâProvince of Ontario. Geol. Surv. Canada, Mem. No. 6. COATES |  | | Book | | A CHANGING PLANET 11 Vanadinite, San Carlos district, Chihuahua, Mexico * 8 x 4 x 2 cm Mineral Species...have grown at about the same time, as happens with pyrite and quartz, or they may have grown one after the...class, which includes minerals such as diamond, pyrite, fluorite and garnet. There are three main variations...the cube (P means âprimitiveâ in a space group). Pyrite crystallizes in the space group P43, and its crystal...include gold, halite, copper, platinum, diamond, pyrite and galena. Starting with the orthorhombic cell |  | | Journal (issue) | | April2000 2000 April ' SriLankan Lankan 'f^ ^ < Sri gemdeposits deposits ; . gem LW NwwTN Âť ., GEPOL...Okkampitiya Okkampitiya gem gem field, field, Sri Sri Lanka Lanka 1 1 2 V. V.Mathavan Mathavan 1, , S.S.T....University University ofofPeradeniya, Peradeniya,Sri SriLanka Lanka 2.2.Institutfur Institut fĂźr Geowissenschaften...situated in in south-eastern south-eastern Sri Sri Lanka. Lanka. These These are are (1) (1) the the gem-bearing...deposit Introduction Introduction S riri Lanka, Lanka, well well known known for for its its wide |  | | Journal (issue) | | Gemesis CVD synthetic diamond New sapphires from Sri Lanka Cultured pearls from Micronesia VOLUME 48 NO...Sapphires from Thammannawa, Kataragama Area, Sri Lanka Pannipitiye G. R. Dharmaratne, H. M. Ranjith Premasiri...the object of a recent gem rush in southeastern Sri Lanka, possess good transparency and a pure blue color...sapphire ⢠Blue sapphire discovery near Kataragama, Sri Lanka ⢠Sapphire and ruby carvings from Vietnam ⢠Color...timely features on a recent sapphire rush in Sri Lanka and the emerging Micronesian cultured pearl industry |  | Harris, Stephen J., Graham, Ian T., Lay, Angela, Powell, William, Belousova, Elena, Zappettini, Eduardo (2017) Trace Element Geochemistry and Metasomatic Origin of Alluvial Sapphires From the Orosmayo Region, Jujuy Province, Northwest Argentina. The Canadian Mineralogist, 55 (4) 595-617 doi:10.3749/canmin.1700015 | Journal (article/letter/editorial) | | ALLUVIAL SAPPHIRES FROM THE OROSMAYO REGION, JUJUY PROVINCE, NORTHWEST ARGENTINA STEPHEN J. HARRIS, IAN T...alluvial sapphires from the Orosmayo region, Jujuy Province, northwest Argentina. In situ laser ablation inductively...columbite-(Fe), rutile, phlogopite, trikalsilite, pyrite, baryte, monazite-(La), xenotime-(Y), and zircon...the Orosmayo region, Sierra de Rinconada, Jujuy Province, northwest Argentina. The discovery of alluvial...western slope of the Sierra de Rinconada, Jujuy Province, within the San Juan de Oro Basin of northwest |  | | Book | | ......................................... 35 Sri Lanka ................................................Alaska; Grand Calumet Is., QUE; the Kyshtymsk district, Ural Mts., Russia; and at Bastnaes and at the...monazite along with actinolite, barite, siderite, pyrite, magnetite, ilmenorutile, garnet, zoisite, and...associate minerals include ilmenite, hematite, pyrite, magnetite, and molybdenite. Other minerals that...deposits also occur at several sites in the Mavuzi district, Mozambique, where davidite crystals exceeding |  | | Journal (issue) | | 1983); therefore, in spite of of its better from Sri Lanka, show X-ray diffraction diffraction data which...reliableidentificaidentification.localities in Sri Lanka, and also from at least one diffraction seems...tion. locality in Burma (Spengler, 1983). In Sri Lanka refractive a zincian variety with relatively high...1 'taaffeite' and whose origin was thought to be Sri Around of about This stone is rather (0.30ct in red...weight was sold as c'red taaffeite' to Dr Dr E. Lanka. This rather small (0.30ct weight) and its colour |  | | 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 (article/letter/editorial) | | Hohlräume das Ansehen von Honigwaben, und unzersetzte Pyrite, ganz aus Limonit bestehende WĂźrfel und leere Hohlräume...stammen zum grĂśĂten Teile aus dem District Balangoda in der Provinz Sabaragamuwa, wo sie aus einem Zirkongranit...Geologie von Ceylon. III. Zirkon usw. in der Balangoda-Gruppe (Ebenda 418 â 422). Krystalle von blaĂ...bis 1 cm lang kommen im Granit des Districtes Balangoda vor, zuweilen in beträchtlicher Menge. Brought..., sind sehr häufig in Kiesen d e r Districte Balangoda u n d B a m b e r a b o t u w a (siehe auch L |  | | Book (edition) | | colours of bornite (brown), chalcocite (blue), and pyrite (creme). 2 Reflectance Reflectance relates to...internal reflections. Isotropic minerals, such as pyrite or galena, do not show bireflectance. Left: Radial...anisotropy. In rare cases, isotropic minerals, such as pyrite or galena, may show an anomalous anisotropy due...transmitted light). Left: The polishing hardness of pyrite (creme) is much higher than that of graphite (brownish...grey), which shows grooves at the contact with pyrite, leading to a strong relief. 4 Cleavage Cleavage |  | | Journal (issue) | | in Colorless, Yellow, and Blue Sapphires from Sri Lanka Kcirl Scl~metzerand Olaf Medenbach REGULAR FEATURES...Banjarmasin-Martapura area of southeastern Kalimantan (the province of Kalimantan Selatan). The gemological characteristics...map shows the two major areas (left the Landak district of western Kali= man tan, below = the Bmjarn~asin-Maitapura...000 guilders worth of diamonds from the Landak district in what is now western Kalimantan. The 367-ct...Banjarmasin, the capital city of Kalimantan Selatan province. In GEMS & GEMOLOGY Summer 1988 this area |
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