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Timmasamudram Kimberlite Cluster, Wajrakarur Kimberlite Field, Anantapur District, Andhra Pradesh
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A cluster of four kimberlite bodies was discovered on the left bank of the Penner River near Timmasamudram village. Falling in the area known for alluvial diamond occurrences within the Wajrakarur Kimberlite Field (WKF), this cluster is located between the Kalyandurg Kimberlite Cluster in the west and Chigicherla Kimberlite cluster in the east. With the addition of kimberlite bodies in the present cluster, christened as the Timmasamudram Kimberlite Cluster (TKC), the total number of kimberlite bodies in WKF reaches to 27. Texturally, mineralogically and chemically, the kimberlite bodies in TKC match with the archetypal Group-I kimberlites. Typically they fall in the non-micaceous kimberlite field. The mantle xenocrystic mineral chemistry shows conditions congenial for diamond formation in these pipes, which is further supported by actual microdiamond recovery from the soft kimberlitic yellow ground.
Keywords
Kimberlite, Timmasamudram Kimberlite Cluster, Group-I kimberlites, Microdiamonds, Andhra Pradesh.
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