Mineral Resources
Assam is endowed with petroleum, natural gas, coal, limestone and many other minor minerals such as magnetic quartzite, kaolin, sillimanites, clay and feldspar. A small quantity of iron ore is also available in western parts of Assam.
The Upper Assam districts are major reserves of oil and gas. Petroleum was discovered in Assam in 1889. It is estimated that Assam and surrounding region possess around 150 million tonnes of petroleum reserves. Presently, Assam is the 3rd largest producer of petroleum (crude) and natural gas in the country accounting for 16% and 8% respectively of the total production of this mineral in the country.
A Tertiary coal belt is located in Tinsukia, Dibrugarh, Sivasagar, Karbi Anglong and Dima Hasao districts with an estimated reserve of 370 million tonnes. Assam coal is friable in nature and has a high sulphur content. It is mainly utilised by local railways, steamers, and hydro power stations. Low moisture, low volatile cooking coal has been discovered in the Hallidayganj Singrimari area.
Assam has rich limestone reserves. The major reserves of limestone are in Dima Hasao and Karbi Anglong districts. A total reserve of 97 million tonnes of limestone has been found in these two districts and almost half of the reserve is of cement grade. Moreover, there is an estimated reserve of 365 million tonnes of limestone near Umrangshu in Dima Hasao district.
Among the minor minerals, there are quartzite reserves in the Nagaon district, kaolin reserves in Karbi Anglong and the Lakhimpur districts and sillimanite-bearing rocks in Karbi Anglong district.
Read more about this topic: Physical Geography Of Assam
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