Journal of the Geological Society of India

, Volume 93, Issue 6, pp 663–674 | Cite as

Sediment Hosted Stratiform Copper (SSC) Mineralization in Bhudoli-Basari Area, North Delhi Fold Belt, Mesoproterozoic Delhi Supergroup, Rajasthan

  • Shubhabrata MukhopadhyayEmail author
  • Vineet Kumar
  • Monika Sangwan
Research Articles


The rocks of the Kushalgarh Formation of the Delhi Supergroup in northeast Rajasthan, host low-temperature prospect generally known as sediment hosted stratiform copper (SSC) mineralization in Bhudoli-Basari area, district Sikar, Rajasthan. Mineralization is about 3km in length with variable width of up to 600m and sulphides occur mainly as fine dissemination as well as veinlets within the steeply dipping carbonate rocks, which were remobilized along the quartz-calcite veins during compaction and subsequent deformation. The prospect is product of low-temperature aqueous brines. The brines leached, transported, and deposited copper (and associated metals) as per physical and chemical stabilities. The mineralization in the Bhudoli-Basari SSC consists mainly of bedding-parallel disseminations of fine-grained sulphides, typically zoned. Copper is leached from poorly sorted first-cycle clastic sediments of footwall redbeds, associated meta/volcanics of the Raialo Group and basement rocks during their progressive diagenetic alteration by moderate-temperature oxygen rich brines. Ore mineral zoning from chalcocite to pyrite in the Bhudoli-Basari area is archetypal to other SSC deposits viz. the Kupferschiefer of Poland-Germany and the Central African Copper belt of Zambia.


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The authors are grateful to the HoD, Western Region, Geological Survey of India for providing opportunity to work in the study area and every logistic support during the course of investigation.


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Authors and Affiliations

  • Shubhabrata Mukhopadhyay
    • 1
    Email author
  • Vineet Kumar
    • 1
  • Monika Sangwan
    • 1
  1. 1.Geological Survey of IndiaJaipurIndia

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