Mining and Mineral Technology

Exploration of Chromite in Wadi Kalbu area  , Nizwa , Sultanate of Oman  [MMT05]
By Mr. Farhan Siddhiqui


Chromite is classified as an oxide mineral composed of Iron ,Chromium and Oxygen with the simplified formula FeCr2O4. It has lots of industrial applications which makes it of great industrial significance. The present study focusses on exploration of Chromite in Wadi Kalbu area of  Nizwa , Sultanate of Oman .Most of the Chromite bodies in the Ophiolite are located below the petrographic Moho, within the transition zone of mixed Dunite and Herzburgite near the top of the Mantle sequence. The fieldwork was carried out for Geological exploration of Wadi Kalbu area. Number of Chromite Ore bodies were observed during the exploration. Two Samples were collected from the Herzbergite (host rock) and eight samples were collected from the Chromite bearing ore bodies. All Samples were send to labs for chemical analysis to know the Cr2O3 ,Fe,SiO2,Al2O3,CaO,Mgo content and also the Cr : Fe ratio . Field observation and chemical analysis clearly indicates that Wadi Kalbu area has a good prospect for Chromite exploration and mining based on chromite content. 


Keywords: Chromite, Oman, Exploration, Ophiolite, Mining

Liked : 10
Question(s) : 9
Rare Earth Elements Composition in Surface Sediment from Kelantan River  [MMT06]
By Mr. Chang Shen Chang

Rare earth elements (REE) are a set of 17 chemically similar metallic elements including 15 lanthanides, scandium and yttrium. The objectives of this study are to determine the rare earth elements composition in the surface sediments from Kelantan River by inductively coupled plasma- mass spectrometry (ICP-MS) and to assess the economic Enrichment Factor of each rare earth elements by using Clarke Value which based on its average crustal concentration. The result of economic Enrichment Factor (EF) can be utilized as a preliminary economic feasibility of rare earth mining along Kelantan River. 28 surface sediments were collected along Kelantan River, dried and near-total digested prior to ICP-MS analysis for REE quantification. The results show that the total REE in sediment fluctuated along the river but all REEs were lower than the typical mineable ore grades. In conclusion, the fluvial sediment mining of REE in Kelantan River is not economically feasible at the present time.

Liked : 10
Question(s) : 5

Distribution of Selected Minerals and Heavy Metals in Surface Sediment from Kelantan River off Tumpat, Tanah Merah, and Kuala Krai Area [MMT03]
By Miss Nur Farah Hani Bt Salleh

A mineral is an inorganic substance that occurs naturally meanwhile heavy metal is one of the crucial contaminants in nature. The objectives of this study are to determine the physical characteristics of the surface sediments by measuring through the grain size and to assess the distribution of minerals and heavy metals in sediment. The result of heavy metals was then used to estimate the level of pollution in Kelantan River by applying the Geo-accumulation Index (Igeo) and Enrichment Factor (EF). The surface sediments were frozen and preserved at 4℃ before further analysis. Five samples were analyzed by the X-Ray Diffraction Spectrometry (XRD) and X-Ray Fluorescence Spectrometry (XRF) to evaluate the presence of minerals. Three major mineral compounds were identified in the sediments which were quartz, muscovite, and illite. Atomic Absorption Spectrophotometer (AAS) was used to determine the concentration of heavy metals. The results show that the average concentration of heavy metals in sediment decreased in the order of Al>Fe>Zn>Cr>Pb>Cu. In a conclusion, the contamination risk alongside the Kelantan River is considered as low according to the result of the Geo-accumulation Index (Igeo).

Liked : 7
Question(s) : 4


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