Saturday, March 6, 2010

Copper deposits in India.

Hindustan copper ltd. (HCL) is presently the sole indigenous producer of primary copper in the country. The all India recoverable reserves of copper ore are placed at 431.046 million tonnes equivalent to about 4.557 million tonnes of metal content. The prospective resources are placed at 769.90 million tonnes of copper ore.
Copper concentrated states are, Andhra Pradesh, Jharkhand, Gujarat, Karnataka, Madhya Pradesh, Maharashtra, Meghalaya, Orissa, Rajasthan, Uttar Pradesh and West Bengal.
Recently in Jharkhand copper mining has been stopped due to involvement of more money and less profit only one mine is working.
Boreholes drilled in Chitar sector in Pali and Ajmer districts in Rajasthan have intersected ore zones, varying in width from 0.55 to 9.8 m. The zones contain grade ranging between 0.5% and 1% Cu and 1% and 2%zinc. Drilling investigation in Dariba (Akola) copper prospect, Rajasthan, has indicated about 2 million tonnes of copper ore. The test drilling by GSI at Saran Bhawavat in Udaipur district of Rajasthan has shown copper mineralization varying between 0.4% and 1% copper in the first borehole.

In Puranapani area, West Bengal, significant copper mineralization in association with the quartz vein intruding the mica schist came to light during the course of tungsten exploration by GSI. During geochemical appraisal of Dobri-Pingalpani area in Chamoli district, Uttar Pradesh, two silicified zones were noted in Trini-Koteshwar area, analysing 0.55 to 0.72 % Cu. Recoverable reserve of 0.987 million tonnes having 11.65 thousand tonnes of metal has been estimated from the district of Pithoragargh in UP/Uttaranchal.

In Maharashtra copper has been reported from the district of Nagpur where the reserves of recoverable ore is said to be 0.142 million tonnes having 1.908 thousand of tonnes of metal in it.

In Orissa the district of Mayurbhanj and Samabalpur have been reported to have a total of 1.65 million tonnes of recoverable reserve of copper ore with 1820 thousand tonnes of metal content in it.

Madhya Pradesh was the leading producer of copper ore contributing 39.7% to the Indian production followed by Rajasthan (33.7%), Jharkhand (24.7%) and Karnataka (1.8%). Nominal production was also reported from Orissa and Sikkim.

Jharkhand has the reserve of 93.06 lakh tonnes, which is about 25.94% of India’s total deposits. Copper deposits extend in a linear belt of 130 km length and 17km width. This belt exists from Chakradharpur to Simgri (Bahragora) through Kharsawan, Saraikela and Dhalbhum. GSI (Geological Survey of India) has tentatively estimated 1.59 million tonnes of copper ore, containing 2.36% copper, in the Dhobani area. A recoverable reserve of 0.35 million tonnes of copper ore, which might yield 5.75 thousand tonnes of metal, has been estimated from the district of Hazaribag. Further possibility of its existence lies in the districts of Giridih, Sahebganj, Palamau and Garhwa.

1 comment:

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