(PDF) PROSPECTING SAND RESOURCES AT THE …
sand deposits rich with heavy minerals such as ilmenite, rutile, garnet, zircon and. monazite around the coastal b elt of Sri Lan ka, lead to investigate the offshore potential. for such minerals ...
(PDF) OCCURRENCE AND GEOCHEMISTRY OF ILMENITE RICH BEACH …
Beach-rocks are cemented coastal sediments that occur mainly under subtropical to tropical climatic conditions. Due to higher biogenic chemical association on the beach fronts, Sri Lanka comprises ...
Evolution of coastal sandy aquifer system in Kalpitiya peninsula, Sri
Morphology and land use pattern. The Kalpitiya peninsula (Fig. 1) is a compound structure like a beckoning finger in the North-western coast of Sri Lanka.Morphologically it is a low-lying flat sandy terrain characterized by wide beaches, sand ridges and runnels, saline pools and dune formations.
The Genesis of Thorium-Rich Monazite Placer Deposits …
The Ger~esis 0.f Thorium-Rick Mo~raiite Placer Deposits in Sri La~lka 103 highest heavy mineral concentrations are found in the regions of Gonagala and Omatu Ela and also Pitigala Ganga (Figure 2 ...
Total amount of ilmenite, rutile, and zircon exported from Sri Lanka
The major Sri Lankan placer deposits are (i) ilmenite deposits at Pulmoddai, Mulativu, Nayaru, Vakarei and Verugal (northeast coast of Sri Lanka); (ii) garnet deposits at Dondra, Dikwella ...
E-Repository
Techno-economically minable mineral sand deposit of Pulmoddai is extended about 7.2 km along the beach from Arisimale to Kokkilai lagoon mouth of northeastern Sri Lanka. Since the global demand for heavy minerals is increasing, the new expanses for mineral deposits should be investigated.
Distribution and significance of the 2004 Indian Ocean tsunami deposits
The sheet-like sand deposits at Bang Sak beach were composed mostly of silicate minerals, shell fragments, and skeletal fragments that were transported from the shallow sea floor and beach by the tsunami. The deposits generally thin and fine landward (Figure 8.4, Figure 8.5), although the pattern is complicated by variations in local …
Industrial Minerals in Sri Lanka
Pulmoddai beach sand deposit is the most important non-ferrous mineral reserve in Sri Lanka to date. This deposit contains minerals including one of the most expensive and sought after metals in the world - titanium. Ilmanite (FeTiO2) and rutile (TiO2) are found in enormous concentrations in the Pulmoddai beach sand deposit area. Several other ...
THE PROCESSING OF BEACH SAND FROM SRI LANKA …
Mineralogical andChemical Analysis. The particle size distribution of Sri Lankan raw beach sand is given in Fig. 4. A maximum of 29.1% by weight of raw beach sand was found in particle size ...
(PDF) PALEOZOIC GLACIAL SEDIMENTS OF SRI LANKA …
A sequence of rhythmic varve like sediments within the valley of Weuda and isolated sand and gravel deposits in the northwestern plains of Sri Lanka, were reinvestigated. Inter-bedded peaty clay and sand intercalating with un-weathered feldspar, ... can probably indicate the time of mid-Holocene highstands. It is followed by expansion of beach ...
PROSPECTING SAND RESOURCES AT THE …
Journal of Geological Society of Sri Lanka Vol. 16 (2014), 65-73 ... Depletion of inland sand reserves for the construction industry and occurrence of beach sand deposits rich with heavy minerals ...
Study of geochemical, mineralogical and textural nature of beach …
Grain size variations (108.2 – 609.8 µm) show that Sri Lanka mainly consists of medium sand, whereas the northeast part of the country mixes with fine sand due to the influence of Bengal fan ...
RADIOMETRIC SURVEYING FOR Th AND U …
Journal of Geological Society of Sri Lanka Vol. 21-2 (2020), 57-80 ... quaternary deposits such as beach rocks, ... inland sand deposits are found around Aluthgama, Kosgoda, and Uragaha area. ...
Use of Dune Sand as an Alternative for River Sand for …
The objective of this paper is to indicate the results of some studies carried out and facts on the dune sand deposits of North-West coastal belt of Sri Lanka. 2 Method of Study The major areas in Northwestern part of the Island were selected for …
(PDF) Microtexture and grain size characteristics of lagoonal …
Placer deposits are composed of coarse-skewed leptokurtic to platykurtic fine sand and evidenced for dominant bottom suspension mechanisms on the weak wave-generated depositional agent ...
MINISTRY OF INDUSTRIES LANAKA MINERAL SANDS …
ern coast of Sri Lanka 54 km north of Trincomaleee. The beach sand at Pulmoddai is very rich in valuable mineral namely, ilmenite, rutile, zircon, monazite and garnet with a percentage as high as 60% heavy minerals of which 65% is ilmenite, 10% zircon, it has been estimated that a total quantity of 12.5 million tons of unexploited valuable.
UNREGULATED RIVER SAND MINING IN SRI …
RSM in Sri Lanka has severe environmental, socio-economic, and public health consequences. According to Economy and Environmental Progr amme for Southeast Asia, the problems it causes. …
State-of-the-art and perspectives in the heavy mineral industry of Sri
Field investigations suggested the occurrence of heavy minerals as beach-placers, and inland/raised beach deposits along the coastline of Sri Lanka. Geochemical results showed the enrichment of TiO 2, Fe 2 O 3, Al 2 O 3, and trace elements, and depletion of other major oxides such as Na 2 O, K 2 O, MnO, MgO, CaO, and P 2 O 5 .
A comparison of global rare earth element (REE) resources …
In this regard, the present work is focused on assessing the REE potential in the beach placers along the southwest coastline in Sri Lanka. The collected 36 beach sand samples from the mean sea ...
Influence of Nearshore Sediment Dynamics on the
Grain size variations (108.2 – 609.8 µm) show that Sri Lanka mainly consists of medium sand, whereas the northeast part of the country mixes with fine sand due to the influence of Bengal fan ...
A comparison of global rare earth element (REE) resources …
The Pulmoddai mineral sand deposit is the most potential RE resource in Sri Lanka. ... elements, such as thorium (Th) and uranium (U) (Voncken, 2016, Xaba et al., 2018). Monazite mainly occurs in beach placer deposits, usually in high concentrations, while it is also found as an accessory mineral in granite, gneiss, and other igneous and ...
Hydrodynamic implications of textural trends in sand deposits …
These kind of tsunami deposits are frequently identified by a sand layer near the surface, uneven stratigraphical boundaries, and fragmented mollusc shells that yielded modern 14 C ages (Goff et ...
(PDF) Comparison of Heavy Mineral Composition along
The main source of this deposit may be weathered and eroded hard rocks, transported through Mahaweli River, which is the longest river (335 km) in Sri Lanka covering about one sixth of the island.
Sedimentological observations and geochemical …
Firstly, the thickness of sand layer II is very high (∼151 cm) compared to paleo-tsunami sand layers identified in Sri Lanka and elsewhere. For example, Matsumoto et al. (2010) investigated the thickness of the 2004 Indian Ocean tsunami deposits in 51 cores from the Periya Kalapuwa Lagoon of eastern Sri Lanka.
Minerals | Free Full-Text | Methods of Extracting TiO2 and …
Particularly, ilmenite beach sand deposits (black sand) are found in numerous countries, such as Sri Lanka, India, South Africa, Australia and Brazil . In brief, the main purpose of this article is to provide a comprehensive review on already well-established processes and novel approaches to extract mainly TiO 2 as well as other …
Radioactivity levels in beach sand from the West Coast …
Pulmudei and Kokilai are the largest beach mineral sand deposits in Sri Lanka (Herath, 2008). In the West Coast, the beach for several miles north of the Kelani River is rich in ilmenite (Herath ...
State-of-the-art and perspectives in the heavy mineral …
The current status of the heavy mineral industry and its perspectives are poorly examined in Sri Lanka. Therefore, this paper presents and assesses the heavy mineral industry of Sri Lanka related to ilmenite, rutile, and zircon using real-time data, obtained from Lanka Mineral Sands Limited (LMSL), during the last decade.
Hydrodynamic implications of textural trends in sand deposits …
Vertical trends in mean grain size (phi), interpreted hydro-textural stratigraphic units, and lateral textural changes within the tsunami sand deposit exposed at four sections at Yala, Sri Lanka. Wavy line at the top of the 191 and 300 m profiles represents the truncation of unit 5.
Simplified geological map of Sri Lanka shows the study area …
The Pulmoddai deposit records high-grade values of heavy minerals such as 70-72% of ilmenite, 8-10% of zircon, 8% of rutile, 1% of sillimanite, and 0.3% of monazite (Sri Lanka Minerals Year Book ...
(PDF) Chemical, Mineralogical and Textural Characterization …
The Red earth (RE) deposit that exists along the northwest coastal belt of Sri Lanka is a significant geological formation. Fine-grained sand coated with iron-aluminum oxides brings the characteristic reddish color and the presence of important heavy minerals such as magnetite, ilmenite, and rutile enhance its economic importance.