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Occurrence and depositional character of monazite deposit in the offshore and coastal zone around South-West region in Sri Lanka

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dc.contributor.author Egodawatta, EADMU
dc.contributor.author De Zoysa, GDP
dc.contributor.author Prasanna, DAKDG
dc.contributor.author Mohommedshiffa, J
dc.contributor.author Ratnayake, NP
dc.contributor.author Weerawarnakula, S
dc.contributor.editor Ratnayake, NP
dc.contributor.editor Abeysinghe, AMKB
dc.contributor.editor Premasiri, HMR
dc.contributor.editor Karunaratne, S
dc.date.accessioned 2022-06-29T05:37:06Z
dc.date.available 2022-06-29T05:37:06Z
dc.date.issued 2010-09
dc.identifier.citation Egodawatta, E.A.D.M.U., De Zoysa, G.D.P., Prasanna, D.A.K.D.G., Mohommedshiffa, J. Ratnayake, N.P., & Weerawarnakula, S. (2010). Occurrence and depositional character of monazite deposit in the offshore and coastal zone around South-West region in Sri Lanka. In N. P. Ratnayake, A.M.K.B. Abeysinghe, H.M.R. Premasiri & S. Karunarathna (Eds.), Proceedings of the 5th Annual Conference on Earth Resources for National Development (pp. 5-8). Department of Earth Resources Engineering, University of Moratuwa. en_US
dc.identifier.uri http://dl.lib.uom.lk/handle/123/18397
dc.description.abstract Onshore or offshore, ocean offers us a larger number of industrial minerals. Monazite is one of these minerals found on beach placers in north eastern and south western coastal region of Sri Lanka. Our study area, both onshore and offshore from south western region, encompasses Induruwa and Polkotuwa. This research is focused on analyzing the depositional character of monazite and to evaluate the suitability as an ore deposit. Our methodology comprised of in-situ sampling periodically in predetermined locations and laboratory testing for monazite concentration by grain size analysis and observation though microscope. Results show significant correlation between the monazite concentration in the coastal zone and monsoonal changes. Further, accumulation of this Monazite is significantly controlled by coastal morphology. However, the absence of monazite in the offshore region contradicts with United Nations Revolving Fund for Natural Resources Exploration results. In this study, we have identified three coastal areas; Maha Induruwa, Kalutara and Polkotuwa for exploiting Monazite as an ore deposit. In these hotspots, Monazite concentration ranges from 2.2 % to 9.1%, especially during south western monsoon. Therefore we propose to mine them only during south western monsoon, digging lm surface layer and extracting monazite by collecting only <256fim fraction. en_US
dc.language.iso en en_US
dc.publisher Department of Earth Resources Engineering en_US
dc.subject Monazite en_US
dc.subject Kalu ganga en_US
dc.subject offshore en_US
dc.subject Monsoon en_US
dc.subject Sediments en_US
dc.title Occurrence and depositional character of monazite deposit in the offshore and coastal zone around South-West region in Sri Lanka en_US
dc.type Conference-Full-text en_US
dc.identifier.faculty Engineering en_US
dc.identifier.department Department of Earth Resources Engineering en_US
dc.identifier.year 2010 en_US
dc.identifier.conference 5th Annual Conference on Earth Resources for National Development en_US
dc.identifier.place Katubedda en_US
dc.identifier.pgnos pp. 5-8 en_US
dc.identifier.proceeding Proceedings of the 5th Annual Conference on Earth Resources for National Development en_US
dc.identifier.email nalin@uom.lk en_US


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