Journal of Geological Society of India (Online archive from Vol 1 to Vol 78)

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Euhedral Authigenic Tourmaline from the Kaladgi Sandstone, Jamkhandi, Bijapur District, Karnataka


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1 Department of Geology, University of Poona, Pune 411 007, India
 

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Petrographical studies of the Kaladgi sandstone of Precambrian age from the Bijapur district, Karnataka, revealed the presence of detrital and authigenic tourmaline. The presence of authigenic tourmaline in the form of individual crystals is used to decipher the post-depositional geochemical changes. The increasing silica content and the alkaline pH of the interstitial fluids have favoured the formation of authigenic tourmaline.
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  • Euhedral Authigenic Tourmaline from the Kaladgi Sandstone, Jamkhandi, Bijapur District, Karnataka

Abstract Views: 184  |  PDF Views: 123

Authors

R. K. Sukhtankar
Department of Geology, University of Poona, Pune 411 007, India

Abstract


Petrographical studies of the Kaladgi sandstone of Precambrian age from the Bijapur district, Karnataka, revealed the presence of detrital and authigenic tourmaline. The presence of authigenic tourmaline in the form of individual crystals is used to decipher the post-depositional geochemical changes. The increasing silica content and the alkaline pH of the interstitial fluids have favoured the formation of authigenic tourmaline.