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

Open Access Open Access  Restricted Access Subscription Access
Open Access Open Access Open Access  Restricted Access Restricted Access Subscription Access

Compositional Study of Spinels from Wajrakarur Pipe-10 (Anumpalle), Ananthapur District and its Significance in Diamond Prospectivity


Affiliations
1 National Mineral Development Corporation Ltd., Khanij Bhawan, Masab Tank, Hyderabad - 500 028, India
2 Department of Earth Sciences. University of Cambridge, Cambridge CB2 3EQ, United Kingdom
3 Applied Geochemistry Department, Osmania University, Hyderabad - 500 007, India
     

   Subscribe/Renew Journal


Geological Survey of India had recently discovered Wajrakarur pipe-10 and spinels from this pipe were analysed. Q-cluster analysis of these spinels based on Cr2O3, Al2O3, TiO2 and MgO contents indicate the presence of S1, S3, S4, S5 and S10 groups. S1 group spinels are supposed to be cogenetic with diamond i.e., stable in the mantle within the P-T regime under which diamonds are known experimentally to form. The Cr/(Cr+Al) vs Fe/(Fe+Mg) plot also show that a few spinels are from the field of diamond inclusion chromites. This study suggests probable diamondiferous nature of the Anumpalle pipe.

Keywords

Geochemistry, Mineral Chemistry, Kimberlites, Diamond, Spinel, Andhra Pradesh.
Subscription Login to verify subscription
User
Notifications
Font Size

Abstract Views: 167

PDF Views: 3




  • Compositional Study of Spinels from Wajrakarur Pipe-10 (Anumpalle), Ananthapur District and its Significance in Diamond Prospectivity

Abstract Views: 167  |  PDF Views: 3

Authors

Abhijeet Mukherjee
National Mineral Development Corporation Ltd., Khanij Bhawan, Masab Tank, Hyderabad - 500 028, India
K. S. Rao
National Mineral Development Corporation Ltd., Khanij Bhawan, Masab Tank, Hyderabad - 500 028, India
E. V. S. S. K. Babu
Department of Earth Sciences. University of Cambridge, Cambridge CB2 3EQ, United Kingdom
Gautam Roy
Applied Geochemistry Department, Osmania University, Hyderabad - 500 007, India

Abstract


Geological Survey of India had recently discovered Wajrakarur pipe-10 and spinels from this pipe were analysed. Q-cluster analysis of these spinels based on Cr2O3, Al2O3, TiO2 and MgO contents indicate the presence of S1, S3, S4, S5 and S10 groups. S1 group spinels are supposed to be cogenetic with diamond i.e., stable in the mantle within the P-T regime under which diamonds are known experimentally to form. The Cr/(Cr+Al) vs Fe/(Fe+Mg) plot also show that a few spinels are from the field of diamond inclusion chromites. This study suggests probable diamondiferous nature of the Anumpalle pipe.

Keywords


Geochemistry, Mineral Chemistry, Kimberlites, Diamond, Spinel, Andhra Pradesh.