Calcite and dolomite mineralization in the area around Balangoda and critical analysis of mining methods and utilization of the deposits

Abstract

Among the industrial minerals found in Sri Lanka Calcium and Magnesium Carbonate bearing minerals and rocks play a major role in local industry. Crystalline Dolomite and Calcite found in metamorphic terrains are used in ceramic industry, fertilizer industry and in local lime manufacturing plants. Major Calcite and Dolomite occurrences in the metamorphic Precambrian basement are found in Digana, Kekirawa, Polonnaruwa, Balangoda, Baddulla, and Okkampitiya. Studies carried out in the area around Balangoda showed the calcite and dolomite occurrences are located in the area of Illukpellessa, Rajawaka and Molamure. Legal and illegal small scale mining has been carried out in the area during last few decades. Studies also showed most of the mining is carried out haphazardly. No proper mining methods have been used for maximum utilization of the deposits. Furthermore, long term mining has not uplifted the socio-economic conditions of the people of the area and proper environmental protection methods have also not been used. Systematic mapping of the deposits, educating miners on proper mining methods, safety precautions and value of environment protection could lead for better utilization of the deposits. Proper financial guidance through possible co-operate system to obtain financial assistance for mining, transporting materials and finding systematic market for continuous material supply could also uplift the socio-economiccondition of the community.