 | 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) | | 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...morphologies combined with the chemistry of apatite, calcite and dolomite indicate two major stages of crystal...the simultaneous crystallization of magnetite, calcite and dolomite in a non-turbulent environment. Subsequent...Geology, University of Peradeniya, Peradeniya, Sri Lanka e-mail: apitawala@pdn.ac.lk B. G. Lottermoser |  | | 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...textures of calcite and dolomite were performed for interpretation of evolution of Eppawala carbonatites...carbonatites in Sri Lanka. The studied carbonatites are dominated by calcite with subordinate dolomite. Calcites...within the type-1 calcite (type-2), inclusions of dolomite within the type 1 calcite forming plug- or |  | | Journal (article/letter/editorial) | | mineralization in a karstic environment in central Sri Lanka Kapila Dahanayake 1,2 and S. M. N.D. Subasinghe...Road, Kandy, Sri Lanka 2 Department of Geology, University of Peradeniya, Peradeniya, Sri Lanka Abstract...Abstract. At Eppawala in central Sri Lanka secondary phosphate mineralization is intimately associated with laminated...some large phosphorite deposits, e.g. those of North Africa and the Middle East. Furthermore, phosphorites...as the Eppawala phosphate deposit occurs in the township of Eppawala in the Anuradhapura district of Sri |  | | Book | | Sri Lanka's mineral resources can enrich country's coffers Prashan Francis B.Sc. Special (Geo.,SL)...Gem &Jewellery Research & Training Institute, Sri Lanka (Ministry of Mahaweli Development and Environment)...Jewellery Research & Training Institute, Sri Lanka 2018 Sri Lanka's mineral resources can enrich country's...Gem & Jewellery Research & Training Institute, Sri Lanka All rights reserved. No part of this publication...Sutharshan 2018. ISBN 978-955-8382-04-2 Preface Sri Lanka is gifted with many varieties of high quality |  | | 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...to 6%. The parent rocks are mainly made up of calcite, dolomite and apatite, with lesser amounts of ilmenite...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) | | phosphatic marble to exploitable apatite deposit, Sri Lanka KAZUE TAZAKI a n d W. S. FYFE Department of Geology...Department of Geology, University of Peradeniya, Sri Lanka Abstract--Weathering of a granulite-amphibolite...granulite-amphibolite facies phosphatic marble from Eppawala. Sri Lanka is described. During the weathering process, apatite...Primary metamorphic phosphates in the marble from Sri Lanka are hydroxyapatite, as indicated by EPMA and XRD...Recrystallization of phosphate occurred during weathering and calcite dissolution. with nucleation and precipitation |  | | Journal (article/letter/editorial) | | STRUCTURES MARBLE AND PHOSPHATIC ENRICHMENT IN OF SRI LANKA DAHANAYAKE Earth Sciences Division,Instituteof...Departmentof Geology,Universityof Peradeniya,Peradeniya,Sri Lanka AND S. M. N. D. SUBASINGHE Departmentof Geology...Geology,Universityof Peradeniya,Peradeniya,Sri Lanka Introduction allelsthe strikeof the metasedimentary...fenitizationhasbeenreported.However, townshipcalled Eppawala situatedin the Anuradha- onlydetailedgeologic...,petrological,andgeochemical pura districtof Sri Lanka--lying about200 km from studiescanhelp to establishthe |  | | Journal (article/letter/editorial) | | Geology, University of Peradeniya, Peradeniya ( Sri Lanka ) (Acceptedfor publicationJuly 4, 1986) Abstract...derived from high-grade metamorphic rocks from Sri Lanka are hydroxyapatite as indicated by E P M A and...post-depositionalreworking. 1. Introduction In Sri Lanka we have observed the weathering processes of two...Highland Group (2.5-2.0 Ga) at Eppawala near Anuradhapura in Sri Lanka (Jayawardena, 1976). The apatite... The Eppawala carbonatite complex in north-west Sri Lanka (Ceylon). Geol. Surv. Dep. Sri Lanka Econ. |  | | 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...isotopically lighter than dolomite-bearing parageneses. Calcite-graphite temperatures in the range of 750-900 °C...experimentally derived thermometer of Scheele ( 1991 ). Calcite-silicate temperatures ( 150-900 ° C) were calculated...Complex (HC) (Kr6ner et al., 1991; Cooray, 1994) of Sri Lanka are interbedded and folded with granulite- and |  | Evangelakakis, Christos, Kroll, Herbert, Voll, Gerhard, Wenk, Hans-Rudolf, Meisheng, Hu, K�pcke, J�rgen (1993) Low-temperature coherent exsolution in alkali feldspars from high-grade metamorphic rocks of Sri Lanka. Contributions to Mineralogy and Petrology, 114 (4) 519-532 doi:10.1007/bf00321756 | Journal (article/letter/editorial) | | feldspars from high-grade metamorphic rocks of Sri Lanka Christos Evangelakakis 1, Herbert Kroll 1, Gerhard...the amphibolite- and granulite-facies rocks of Sri Lanka, a late-stage, final exsolution event is observed...amphibolite- and granulite-facies terrain of Sri Lanka. These Precambrian rocks contain feldspars exhibiting...Structural, magmatic and metamorphic history of Sri Lanka Wc first give a short account of the lithological...and metamorphic history of Sri Lanka to place the feldspars in 520 $RI LANKA % eZ3 An Ba Co Da Di Ep |  | | 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 |  | El Bamiki, Radouan, Raji, Otmane, Ouabid, Muhammad, Elghali, Abdellatif, Khadiri Yazami, Oussama, Bodinier, Jean-Louis (2021) Phosphate Rocks: A Review of Sedimentary and Igneous Occurrences in Morocco. Minerals, 11 (10) 1137 doi:10.3390/min11101137 | Journal (article/letter/editorial) | | with other non-phosphatic phases such as quartz, calcite, dolomite, and clay minerals [24]. Other non-apatitic...Apatite-hematite breccia, carbonatite, pyroxenite ~5 Lime (calcite) 15 Pyrochlore (Nb) 5–17 Pyrochlore (Nb), Ti...peridotite, jacupirangite, nepheline syenite Lime (calcite), phlogopite Glimmerite, carbonatite, fenite ... ijolite, syenite, fenite, nephelinite Sri Lanka Eppawala Ediacaran (~550 Ma) 38 Canada Lackner...Maastrichtian to the Ypresian. (Tethyan) phosphogenic province [80]. They were deposited during the Upper Creta- |  | | Report (issue) | | associated fenite at 11 localities in the Chilwa Province of Malawi. Remarkably, in that paper it was also...and Carbonatites of the World’, namely Part 1: North and South America (Woolley, 1987), Part 2: Former...compilation. This is clearly illustrated by the first (North and South America) volume, to which 32 new localities...Emirates, Oman, Afghanistan, India, Pakistan, Sri Lanka, China, Mongolia, Vietnam, Korea, Australia, New...associated with the Bishoftu craters in the Debre Zeyt District of Ethiopia are now considered to be hot spring |  | | Journal (article/letter/editorial) | | and metamorphosed in granulite facies of the Sri Lanka basement By R. KLEINSCHRODT, G. V O L L , K61n...Basische Intrusion wurde im Central Granulite Belt der tiefen, kontinentalen Kruste Sri Lankas entdeckt. Sie...intrusion has been found in the Central Granulite Belt of the Sri Lanka continental basement. It intruded...centrale granulitique du socle continental du Sri Lanka. L'intrusion s'est effectu6e parall~lement h la...and metamorphosed in granulite facies of the Sri Lanka basement f opx cpx px hb bi cc do qz mt 781 |  | 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...trace-element chemistry of apatite (sensu lato) SC from calcite and dolomite carbonatites, their associated cumulate...to occur in greater abundance in crystals from calcite carbonatites (up to 4.2 wt.% SiO2, 1.5 wt.% SO3...very low Ca and high Si in apatite from Eppawala, Sri Lanka; formulae derived from their data show as...composition: calcite MA carbonatite from the Zibo diatreme (Shandong, China), calcite-dolomite carbonatite |  | | 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...niobium and rare-earth minerals in monticellite-calcite carbonatite of the Oka Complex, Quebec: The Canadian..., 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 |  | Wang, Zhen-Yu, Fan, Hong-Rui, Zhou, Lingli, Yang, Kui-Feng, She, Hai-Dong (2020) Carbonatite-Related REE Deposits: An Overview. Minerals, 10 (11) 965 doi:10.3390/min10110965 | Journal (article/letter/editorial) | | Mianning in Sichuan province, the Gannan in Jiangxi province and northern Guangdong province are the major...from magmas, which are usually associated with calcite, barite, fluorite, quartz and other minerals to...large deep fault that crosses the REE west coast of North America. is mostly concentrated in the Mesozoic...Ga, [20]) and the Miaoya REE deposit in Hubei province (232 Ma, association with Nb-containing minerals...include magnetite, hematite, apatite, barite, calcite, dolomite, mica and zircon [23,25]. Figure 1. |  | Casillas, Ramón, Demény, Attila, Nagy, Géza, Ahijado, Agustina, Fernández, Carlos (2011) Metacarbonatites in the Basal Complex of Fuerteventura (Canary Islands) The role of fluid/rock interactions during contact metamorphism and anatexis. Lithos, 125 (1) 503-520 doi:10.1016/j.lithos.2011.03.007 | Journal (article/letter/editorial) | | monticellite, diopside, vesuvianite, garnet, calcite, perovskite, alabandite, pyrrhotite and Nb–Zr–Ca...mineralogical or geochemical changes, although calcite recrystallisation is evident. Marbles with a carbonatite-like...2002). The mineral assemblages of these marbles (calcite, dolomite, phlogopite, tremolite, Na, Al-enriched...large shield volcanoes were formed: the southern, central and northern edifices (Ancochea et al., 1996). A...trachybasalts) outcrop in the core of the northern and central edifices (e.g.: Pájara Pluton) (Hobson et al., 1998; |  | | Book | | pigeon's-blood rubies are pried from both soil and central government control. Marvel over India's maharajahs...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...ndwns 465 Bibliography-Montana 469 North Caroli na 472 Bibl iography- North Carolina 472 Bibliography- O ther...473 History 474 Luc Yen 474 Quy Chau (Bu Khang District) 475 Other Vietnam corundu.n1 localities 478 Mining |  | | 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...orebodies, produced magnetite, actinolite, minor calcite, quartz, chalcopyrite, talc, etc. possibly mobilization |  | | 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...orebodies, produced magnetite, actinolite, minor calcite, quartz, chalcopyrite, talc, etc. possibly mobilization |
|
