 | | Journal (article/letter/editorial) | | ORIGINAL PAPER Petrogenesis of the Eppawala carbonatites, Sri Lanka: A cathodoluminescence and electron...the crystallization processes in the Eppawala carbonatites, Sri Lanka. The well preserved magmatic textures...Geology, University of Peradeniya, Peradeniya, Sri Lanka e-mail: apitawala@pdn.ac.lk B. G. Lottermoser...major rock-forming minerals of the Eppawala carbonatites, Sri Lanka. These data have been used to establish...KC HC VC Eppawala 8 O The Eppawala area Physiography and mining activities The Eppawala study area |  | Weerakoon, M.W.K., Miyazaki, T., Shuto, K., Kagami, H. (2001) Rb-Sr and Sm-Nd Geochronology of the Eppawala Metamorphic Rocks and Carbonatite, Wanni Complex, Sri Lanka. Gondwana Research, 4 (3) 409-420 doi:10.1016/s1342-937x(05)70340-3 | Journal (article/letter/editorial) | | Geochronology of the Eppawala Metamorphic Rocks and Carbonatite, Wanni Complex, Sri Lanka M.W.K. Weerakoonl...metamorphic rocks of the Eppawala carbonatite body, Wanni complex, Sri Lanka, revealed that these rocks...occurred 610-550 Ma in the three crustal units in Sri Lanka. Rb-Sr system for biotite, apatite and whole-rock...whole-rock fractions suggests 493k5 Ma for the Eppawala carbonatite body. This age indicates the cooling age...of regional metamorphism 610-550 Ma. Therefore, Eppawala carbonatite body has a strong possibility to be |  | | Journal (article/letter/editorial) | | secondary textures of dolomite in Eppawala carbonatites, Sri Lanka: implications for their petrogenetic...Oluvil, Sri Lanka Department of Geology, University of Peradeniya, 20400 Peradeniya, Sri Lanka; apitawala@pdn...for interpretation of evolution of Eppawala carbonatites in Sri Lanka. The studied carbonatites are dominated...two crustal depths during the petrogenesis of Eppawala carbonatite. The re-localization may have been...carbonatite intrusions exposed at Eppawala in north–central Sri Lanka have intruded near to the axis of |  | | Journal (article/letter/editorial) | | petrological characteristics of Eppawala phosphate deposits, Sri Lanka Received: 15 August 2000 / Accepted:...Abstract The apatite-bearing carbonate rocks at Eppawala, Sri Lanka occur as massive, discontinuous bodies in...important phosphate deposits. The ore bodies at Eppawala contain £42% P2O5, and citric acid solubility...lesser amounts of ilmenite, magnetite, pyrite, forsterite, phlogopite, enstatite, magnesite, diopside,...a few millimetres to several decimetres). The Eppawala rocks are characterised by low silica (£0.41%) |  | | Journal (article/letter/editorial) | | carbonatites occur in India, Pakistan, Afghanistan and Sri Lanka; but so far not known to occur in Nepal, Bhutan...and Jawar), Afghanistan (Khanneshin) and Sri Lanka (Eppawala). This review provide the comprehensive information...(MH) – 440001, India; Geological Survey of India, Central Region, Seminary Hills, Nagpur (MH) – 440006, India...Amba Dongar, Koga, Peshawar Plain, Khanneshin, Eppawala 1 Introduction Carbonatite melts are known to...Pakistan [12, 28, 29, 54], Afghanistan [35], and Sri Lanka [32, 36]. amount of data on trace elements and |  | | Journal (article/letter/editorial) | | carbonate-silicate parageneses from granulite-grade rocks of Sri Lanka Radegund Hoffbauer* and Beate Spiering Minera...calc-silicate rocks and marbles of central and southern Sri Lanka can be characterized by three groups...Complex (HC) (Kr6ner et al., 1991; Cooray, 1994) of Sri Lanka are interbedded and folded with granulite- and...tectonic evolution and metamorphic conditions of the Sri Lankan high-grade series are described in detail..., Di = diopside, Dol = d o l o m i t e F o = forsterite, G r = g r a p h i t e , K f s = K-feldspar, |  | | Journal (issue) | | Winter Branch Chairmen: Midlands - G.M. Green, North West - I. Knight, Scottish - B. Jackson, South West...iridescent chatoyancy Grey orthoclase moonstone from Sri Lanka has a unique combination of a cat's-eye and a...Brazil and another colourless of 12.20 ct from Sri Lanka, but this specimen is considerably larger. Two...Moonstone with a star and cat'seye combination from Sri Lanka Sunstone cat's-eye from Russia A stone described...purchased in Germany and probably comes from Sri Lanka, where a similar one was offered to the author |  | | Journal (article/letter/editorial) | | around Perunthol village is located in the Kollam district of Kerala and lies within the Late Neoproterozoic...granulite facies rocks of Madurai Block (MB) in North (Drury et al., 1984; Harris et al., 1994). All these...breakdown of phlogopite by the reaction; Phlogopite→Forsterite + Al-spinel + Melt (Pasteris, 1983) is highly...highly incompatible with the textures observed. Forsterite is not present in this rock. In addition, textures...of ultramafic rocks present in the eastern and central parts (Rajesh et al., 2004a). The spinel and phlogopite |  | Chakhmouradian, Anton R., Reguir, Ekaterina P., Zaitsev, Anatoly N., Couëslan, Christopher, Xu, Cheng, Kynický, Jindřich, Mumin, A. Hamid, Yang, Panseok (2017) Apatite in carbonatitic rocks: Compositional variation, zoning, element partitioning and petrogenetic significance. Lithos, 274. 188-213 doi:10.1016/j.lithos.2016.12.037 | Journal (article/letter/editorial) | | Pedology, Mendel University, Brno, Czech Republic g Central European Institute of Technology, Brno University...very low Ca and high Si in apatite from Eppawala, Sri Lanka; formulae derived from their data show as...magnetite, (tetra-ferri)phlogopite, AC CE P forsterite, baddeleyite and pyrochlore, and variably referred...samples, such minerals are phlogopite at Zibo, forsterite at Paint Lake and richterite at Upper Fir (Appendix...phlogopite, Upper Fir PT richterite and Paint Lake forsterite are known (authors’ unpubl. data), the effect |  | | 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 |  | | Report (issue) | | Deposit/Site_Name, is meant to identify the area, deposit, district, mine, or occurrence to which the geologic, economic...duplicates, for some areas we report information for a district or area, as well as for specific deposits or mines..., eds., Mineral Deposits of Europe, volume 3: Central Europe: London, The Institution of Mining and Metallurgy...Detterman, R.L., 1989, Triassic phosphate deposits, north-eastern Alaska, USA, in Notholt, A.J.G., Sheldon...Precambrian Champaner Group, near Gandhra, Panchmahal District, Gujarat, in Rao, G.V., Dasgupta, S.P., Pant, |  | | Book | | major producing districts, or a representative district if there are many. We name the chief mining companies...graphite supply must come not merely from one district but from a single mine. Thus the physical properties...extremes of unit value and place value. Although the central realm of the industrial minerals and rocks is clear... The takeover of soda-ash markets, at least in North America, by the mineral trona is another marked...Geology of Industrial Minerals, held annually in North America, provide much geological and related information |  | | Book | | affects its present characteristics as a minera1 province, because of the exposure of the various depth...Buddington (1959) in his classical paper on the North American granites, proposed a three-fold depth subdivision...multiphase, nested, and include a subsidence of the central block and the downward passage of tabular plutons...Peru, map and distribution of ore deposits in the central sector. Based on the Mapa Metalogenico del Peru...Arequipa, Toquepala-Cerro Verde district; in the centre, Morococha and in the north, Michiquillay) straddle the |  | | Book | | affects its present characteristics as a mineral province, because of the exposure of the various depth...Buddington (1959) in his classical paper on the North American granites, proposed a three-fold depth subdivision...multiphase, nested, and include a subsidence of the central block and the downward passage of tabular plutons...Peru, map and distribution of ore deposits in the central sector. Based on the Mapa Metalogenico del Peru...Arequipa, Toquepala-Cerro Verde district; in the centre, Morococha and in the north, Michiquillay) straddle the |  | | Report (issue) | | Sci.) North America Central and South America Australasia Far East Southern Africa Central and East...East Africa West Africa North Africa and the Middle East Northern Europe Western Europe Eastern Europe...fale micolame)a-mmit-lelig- mom) eerele] in the North-East of the “lron Square“. Apart from rich ore,...Canada Cameroons Caribbean Countries Central African Empire Central American Countries Chad Chile China...431 South West Africa 443 Soviet Union Spain Sri Lanka Sudan Surinam Swaziland Sweden 531 511 408 484 |
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