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The well known Khetri Copper Belt is located about 100 km. north of Jaipur and 150 km. West of Delhi respectively. It stretches for about 80 km. length from north of Singhana to south of Raghunathgarh in the state of Rajasthan, India. The Kantli river running NW-SE, broadly divides Khetri Copper Belt into two blocks i.e. North khetri Belt (NKB) and South Khetri Belt (SKB). Major Copper bearing areas of NKB and SKB fall in Jhunjhunu and Sikar district of Rajasthan respectively.
Khetri copper Belt form a part of Proterozoic North Delhi fold Belt. The rock of this area belongs to Alwar and Ajabgarh group of Delhi Super Group of Precambrian age. The main rock types are feldsphethic quartzite, amphibole quartzite, garnetiferous chlorite- biotite, schist /quartzite and carbon phyllite / andalusite schist.
Present paper deals with biogeochemical studies of Kherti copper deposit of Rajasthan, India. Several Plant species and soil samples of the study area were collected and analyzed geochemically. The results reveal that some plant and soil samples indicate accumulation of very high level of copper. The maximum concentration namely 394 ug/g (dry wt.) was found in the leaves of Talinum portulacifolium. Some other Copper accumulators with the concentration of the metal in ug/g: Tephrosia villora (290), Rhus mysorensis (244) and Bouchea morubifolia (156) respectively. Leaves were found to be richer in copper than stems. Copper level in the leaves of Tephrosia, villosa, Aervua tomentosa and Bouchea morubifolia showed a significant plant / soil relationship.
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