 | | Journal (issue) | | Number 2 TABLE OF CONTENTS FEATURE ARTICLES 62 Sri Lanka: The Gem Island Peter C. Zwnan The Identification...a n y fine gemstones found on the island o f Sri Lanka, the subject of Peter Zwaan's article i n this...this issue. This fine 9.57-ct cabochon from Sri Lanka is pictured here against a 19th century lithograph...not of the publishers. SRI LANKA: THE GEM ISLAND By Peter C. Zwaan Sri Lanka, formerly Ceylon, remains...mined by primitive methods. In many instances, the Sri Lankan origin of the gemstone can be determined by |  | | Journal (issue) | | Laboratory', but many gemmologists make the journey to Sri Lanka or Thailand at least once in their lives, if not...observations on brown tourmalines from Elahera, Sri Lanka Ulrich Henn and Martin Schramm Institut fĆ¼r...description of brown tourmalines from Elahera, Sri Lanka. They were classified as uvite and dravite as...deposits are located in the Uva region, in the Ratnapura district and in the Tissamaharma area (Dunn, 1977...(1977) classified the brown tourmalines from Sri Lanka as uvite and dravite: Results For the analyses |  | | Journal (issue) | | Spinels of Mogok ā 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) | | supplier, the fluorite was mined from Cao Bang Province, northeast of Yen Bai. The crystal surfaces were...29.05 ct fluorite is reportedly from Cao Bang Province in northern Vietnam. Photo by Bilal Mahmood. ...yellow-green grossular from Kambanga, Taita-Taveta District, Voi, Kenya, is notable for having a significantly...at the Tourmaline Queen mine, also in the Pala District (e.g. Larson, 2012). So far, approximately three...2011. Recent finds at the Oceanview mine, Pala District, San Diego County, California. Rocks & Minerals |  | | Journal (article/letter/editorial) | | crystals; in early 1996 miners with acicular 2-cm epidote crystals. It created a good contrast found spherical...1996 Sainte-Marie-aux-Mines Show, I noticed that epidote was a central theme; but in Munich this tendency...was the essential difference between the two. Epidote crystals still showed both a twin on (100) and...(almost black) in color. The other occurrence of epidote was Prince of Wales Island, Alaska, where a new...Germany). A banner proudly announced ānovelties from Sri-Lanka,ā and, of course, I didnāt resist the temptation |  | | Journal (issue) | | from the fertile agricultural plain of the Mardan District in the neighborhood of a small village. This settlement...northeast of Peshawar and about 20 km north of the district capital Mardan "as the crow flies" (approximately...o f the topaz hill at Ghundao, i n the Mardan District o f Pakistan, and the geological setting of the...(1973)Economic aspects of topaz of Ghundao Hill, Katlang, District Mardan. West Palzistan Industrial Corp., unpublished...porphyries of the Peshawar plain alkaline igneous province, Northwest Himalayas, Palzistan. In F.A. Shams |  | | Journal (issue) | | Benton & S. Avella 83 Euhedral sinhalite from Sri L a n k a .........................................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) inĀ cluded...minerals from the Elahera gem field in Central Province. Henn (1985) characterized a distinctive olive-green |  | | Journal (issue) | | Franks, B.Sc., Ph.D., F.G.A. South Yorkshire & District Branch: J. I. Platts, F.G.A. Examiners: A. J....of natural Tadparadschah ' sapphire found in Sri Lanka. However, a vast production of synthetic flux...'Padparadschah' sapphire Orange sapphire from Sri Lanka from Tanzania COMPARISON OF PHYSICAL PROPERTIES...Tadparadschah ' sapphires and orange sapphires of Sri Lankan and East African origins respectively and...Absorption spectrum of 'Padparaschah ' sapphire from Sri Lanka. (After Schmetzer et al., 1982) 800 I Cr3-+ |  | | Catalog/List | | pieces in plastic BOURNONITE LaOroya, Junin Province, Peru Select lustrous intergrown Ā½" to 3/8 11...00. box. crystal BOURNONITE LaOroya, Junin Province, Peru Select striated lustrous gray intergrown...minor 20. BROCHANTITE Mex-Tex mine, Hansonberg district, New Mexico Rich bright green fibrous crystal...11 $9. 50. 22. 23. CLINOCLASE Eureka, Tintic district, Utah Choice lustrous dark blue micro crystals...to 5 mm copper plates and masses on minor green epidote matrix. 1}x2 11 $ 25. 00. 25. CORUNDUM lhosy | | | Catalog/List | | pieces in plastic BOURNONITE LaOroya, Junin Province, Peru Select lustrous intergrown Ā½" to 3/8 11...00. box. crystal BOURNONITE LaOroya, Junin Province, Peru Select striated lustrous gray intergrown...minor 20. BROCHANTITE Mex-Tex mine, Hansonberg district, New Mexico Rich bright green fibrous crystal...11 $9. 50. 22. 23. CLINOCLASE Eureka, Tintic district, Utah Choice lustrous dark blue micro crystals...to 5 mm copper plates and masses on minor green epidote matrix. 1}x2 11 $ 25. 00. 25. CORUNDUM lhosy |  | | Journal (issue) | | Plateau in South Vietnam; Kouang Tcheoci Wan, Fujian Province and Hainan Island in Southern China (Keller and...et al, 1985); Gimi Valley near Jemaa and Kaduna Province in Nigeria (Kiefert and Schmetzer, 1987). These...geology of theofAnakie sapphiresapphire mining district Queensland. Journal Journal of of Gemmology, 16...Sapphires from from KanchaGunawardene, naburi Province, Province, Thailand. Thailand. Journal Journal of of...of Mingxi, Fujian and Gemology, 22, 22,1,41-5. Province, China. Gems and 1, 41-5. pc., 1982. The The Chanthaburi-Trat |  | | Journal (issue) | | Plateau in South Vietnam; Kouang Tcheoci Wan, Fujian Province and Hainan Island in Southern China (Keller and...et al, 1985); Gimi Valley near Jemaa and Kaduna Province in Nigeria (Kiefert and Schmetzer, 1987). These...geology of theofAnakie sapphiresapphire mining district Queensland. Journal Journal of of Gemmology, 16...Sapphires from from KanchaGunawardene, naburi Province, Province, Thailand. Thailand. Journal Journal of of...of Mingxi, Fujian and Gemology, 22, 22,1,41-5. Province, China. Gems and 1, 41-5. pc., 1982. The The Chanthaburi-Trat |  | | 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...4, 17, 23, 34, .53 Emerald ... ... ... ... 140 Epidote . 30, 139 INDEX. Esaonite Europe, Gold in Page...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 (issue) | | this effect in the light of new observations. Epidote and kornerupine are introduced as new colour change...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...interaction with other colour change phenomena Epidote Epidote from Tanganyika Massagati, a remote area north |  | | Journal (article/letter/editorial) | | peculiar vein-dikes of the Grenville Geologic Province, Canada. Gem zircon and associated corundum occur...sheet mica pegmatite mines of the Spruce Pine district, Mitchell and Yancey counties. Relatively productive...allanite, monazite, xenotime, apatite, stilbite, and epidote. Similar rare-earth-bearing pegmatites occur nearby...approximately 3-cm zircon crystal on matrix from Sri Lanka. Rob Lavinsky specimen and photo. Figure 9. A...pale tan zircon crystals from Mount Malosa, Zomba district, Malawi. Lino Caserini specimen, Jeff Scovil photo |  | | Journal (issue) | | International June 10, 2003 Galle Face Hote l, Colombo, Sri Lanka Drip, drip, drip, ... the beaded sweat on my head...of tea. I decide it is all three. The hundreds of Sri Lankans in the crowded, unairconditioned hall are...Kunar Province, Afgha ni stan. Anothe r Afg h,:ni had j ust a rrived from Bada khshan Province a nd had...specimen was found in Wama, Darrah Pech, Kunar Province. Afghanistan. New things not seen be fore appeared...by Tony at Excalibur confirmed tha t they were epidote. Speaking of this region south of Peshawar. o n |  | | 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) | | Tresham. Magnesium-rich axinite associated with epidote, tremolite and calcite; London Bridge, near Queanbeyan...by one of the authors (J.S.) at Osarara, Narok District, Kenya. The deposit is located at 1Ā° 34' S, 35Ā°...clinopyroxene rock in Lualenyi, Mgama Hills, Taita District, Kenya, with nearly 10% graphite and nearly 30%...kelyphitic alteration shell consisting of fine-grained epidote and scapolite. For Na-light, n 1*739-1*744, increasing...varieties of red gem spinelsfrom Ratnapura, Sabaragamuwa province of Sri Lanka. Scripta geologica, 1974, 27 |  | | Book | | A CHANGING PLANET 11 Vanadinite, San Carlos district, Chihuahua, Mexico * 8 x 4 x 2 cm Mineral Species...collectible crystals such as gypsum (page 252) and epidote (page 221). Solid crystal-filled veins form when...Hill, New South Wales, Australia * 7 x 6 x 6 cm Epidote, Brazil * 7 x 75 x Reniform In this habit, minerals...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 | | | Journal (issue) | | Benton & S. Avel/n 83 Euhedral sinhalite from Sri Lanka ............................ 91 by L. C. Pit/lln11...Mure-Ii-April /995 EUHED RAL S INHALI TE CRYSTALS FROM SRI LANKA vļæ½v Lawrence C. Pitman, Cornelius S. Hu rlbut...Euhedral sinhalite crystals, reported here jiĀ·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...1 ) noted sinhalite from Eheliyagoda in Sabaragamuwa Province. Gunawardene and Rupasinghe ( I 986) inĀ |  | | Journal (issue) | | Ron Ringsmd The Elahera Gem Field in Central Sri Lanka Mahinda Gunawardene and Mahinda S. Rupasinghe...COLOMBIAN EMERALDS By Ron Ringsrud The Muzo emerald district, i n Boyacd, Colombia, contains several mines...used to describe the best. Yet Colombia's Muzo district actually encompasses several mines, of which two...emeralds mined in Colombia come from the Muzo district, and the Coscuez mine has grown to become the...responsible for most of the emeralds produced in the district from 1925 until i t was closed again in 1938. |  | | Journal (article/letter/editorial) | | amphibole (Mange-Rajetzky and Oberhansli, 1982), epidote (Yokoyama et al., 1990), tourmaline (Henry * Corresponding...high-grade Archaean gneiss terrain that extends into Sri Lanka (Chacko et al., 1987). This southern India granulite...gneisses and charnockites from Weddagala (Ratnapura district), Sri Lanka. Journal of Geology 99, 443 ā 456. |  | | Journal (issue) | | Minas Gerais, Brazil Minas Gerais, BrazilĀ§ Brazil Sri Lanka Madagascar Madagascar Betroka, Madagascar Tanzania...Unakite is a mixture of quartz, feldspars and epidote and shows a wide variety of colours. The main localities...read a paper entitled 'The pegmatites of the Pala District of San Diego, California'. On the22nd October...W. Germany. D. 1977 Sukumaran, T.M., Colombo, Sri Lanka. D. 1977 Tillander, Paula, Helsinki, Finland....MEMBERSHIP TO FELLOWSHIP Aron, Mass K., Nugegoda, Sri Lanka. D. 1977 Ayres, Thomas D., Farnham. D. 1977 Cavey |  | | Journal (article/letter/editorial) | | ekanite (radioactive and not used in jewellery), epidote, euclase, several types of feldspar, minerals of...secondary gravel deposits in Myanmar (Burma), Sri Lanka, Tanzania and Madagascar. The gravels in each...any colour but red.) Sapphires found in Sri Lanka near Ratnapura, the āCity of Gemsā, probably include...the massive accumulations of pure graphite in Sri Lanka and Madagascar and at Merelani and Mahenge in...31ā32 Ma (Zaw et al. 2010). Another major ruby district in Myanmar, Mong Hsu, also located in the Shan |  | | Journal (issue) | | North-West Branch: I. Knight, F.G.A. South Yorkshire & District Branch: I. R. M. Lewis, F.G.A. Examiners: B. W...tourmaline, the the former sporadically by by epidote. It has has been noted that by prosopite and cookeite...birefringent rods turned out to be made up of epidote, whose chemical composition was close to that of...consisting of tourmaline and, in a few cases, of epidote. ACKNOWLEDGEMENTS The authors wish to express...described from Umba Valley, Tanzania, and from Ratnapura, Sri Lanka (Zwaan, 1974; Jobbins et al., 1978; Schmetzer |
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