 | | Journal (article/letter/editorial) | | Mineralization of Highland Rocks of Sri Lanka: A Case Study in the Kandy - Matale Area S.W. Nawaratne and C.B...University of Peradeniya, Sri Lanka The history of mining for minerals in Sri Lanka can be dated back to...and phlogophite. Several mineral deposits in Sri Lanka are of economic importance even to the present...highly valuable mineral deposits in the Kandy and Matale areas, which include feldspar, quartz and mica...mica deposits. In addition gemstones mainly topaz but also large crystals of aquamarine have also been found |  | | Journal (issue) | | South America (Brazil and Colombia), central and southern Asia (Sri Lanka, India, Afghanistan, Pakistan, Russia...The major sources for diamonds were Australia, central and southern Africa (Botswana, South Africa, Namibia...nephrite], opal, peridot, quartz, spinel, tanzanite, topaz, and tourmaline). Locality information is both summarized...come from a number of sources, but predominantly Sri Lanka. Accented with smaller diamonds, the 129 gem corundums...demand when large quantities of irradiated blue topaz created an inexpensive alternative during the 1980s |  | | Journal (issue) | | of black lined surface-reaching fractures and a central inclusion (Figure 18). Following the treatment...emeralds are colour zoning (almost colourless central area with a green rim); systems of almost parallel-running...trigonal and hexagonal depressions (often with a central Introduction rhombohedral or or pyramidal pyramidaltermination)...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 |  | | Journal (issue) | | of black lined surface-reaching fractures and a central inclusion (Figure 18). Following the treatment...emeralds are colour zoning (almost colourless central area with a green rim); systems of almost parallel-running...trigonal and hexagonal depressions (often with a central Introduction rhombohedral or or pyramidal pyramidaltermination)...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 |  | | Journal (issue) | | instrumentation such as LA-ICPMS—once primarily the province of academia—became a fixture in many gemological...main shareholders were Anglo-American Group, 45%; Central Holdings, the Oppenheimer family trust, 45%; and...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 Zambia’s largest source of emeralds |  | | 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...makes a particularly grand impression, while the central design offers hints of the exotic East. Photo courtesy...society, were Bahrain in the Persian Gulf, Ceylon (now Sri Lanlza), and Australia. Freshwater pearls came from...Siberia were the source for demantoid garnet, pink topaz (again, see figure 3), Jcwcls of thc Edwarclians |  | | Book | | A. Jobbins Butterworth-Heinemann Gem Books Topaz m(JTTERWORTH EINEMANN Butterworth-Heinemann Ltd...Library Cataloguing in Publication Data Hoover, D. B. Topaz. - (Butterworth-Heinemann Gem Books Series) I. Title...Profile xii 1 Topaz - Historical perspectives 1 Introduction 1 Etymology of topaz 1 Topaz in ancient times...times 3 Topaz in Roman times 8 The Dark Ages 12 The Middle Age~ - topaz changes colour The beginning of...of empiricism 15 13 2 Large and important topaz gems and crystals 20 Introduction 20 Giant uncut crystals |  | Kogel, Jessica Elzea, Trivedi, Nikhil C., Barker, James M., Krukowski, Stanley T. - Eds. (2006) Industrial Minerals and Rocks (7th ed.) Society for Mining, Metallurgy, and Exploration, Inc., Littleton, CO. | Book (edition) | | Arlington Heights, Illinois George C. Hawley Central Metallurgical Research and Development Institute...surface area. These considerations have become central to many later classifications but usually as one...Colombia) • Northern Brazilian Shield Province • Caribbean Shield Province (Costa Rica, Jamaica, Dominican...Shield Province (Guinea-Bissau to Togo) • Cameroon Province (Cameroon, Zaire) • Australian Province • European...European Province (France, Greece, Hungary, and Yugoslavia) • Others (United States, Chi na, forme r U |
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