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A Note on Aeromagnetic Evidence of Epigenetic Gold-Sulphide Mineralization in BIFs at Girar, Bundelkhand Craton, India.

Seshu D, Kumar KS, Kumar VP, Pranav KP, Kumar P.

JOURNAL OF THE GEOLOGICAL SOCIETY OF INDIA

https://doi.org/10.17491/jgsi/2025/174235 

The aeromagnetic analysis of the Girar-Badwar greenstone belt, Bundelkhand massif (BM) region, reveals that the existing BIFs extend to an average depth of 400 m and may consist of alternating layers of chert and iron oxides, dominated by magnetite. In support of this, petrographic studies coincide well with the magnetic anomalies, which are juxtaposed with the identified geological lineaments and faults, as well as magnetic lineaments. Further, it is recognized that the identified mineralization of gold and sulphides might be structurally controlled.

Fig: (a) Geological map with inferred faults (Source, https://bhukosh.gsi.gov.in) (after Hiloidari et al. 2021; Sahoo et al.2023) (b) Aeromagnetic anomaly map (Source: NGDR, https://geodataindia.gov.in) (c) Google image with inferred faults, magnetic lineaments and BIFs rock sample locations and (d) Interpreted 3D iso-surface susceptibility image.

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