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The Koidu Kimberlite Project mining lease, located within the Tankoro Chiefdom of the Kono District, measures approximately 4.9 km2 and hosts two small kimberlite pipes, No. 1 Pipe (K1) and No. 2 Pipe (K2), and four kimberlite dyke zones, along which four small blows or enlargements have been discovered.
In addition to the type locality in Germany, it has been reported from Disko Island, Greenland; the Jharia coalfield, Jharkhand, India and as inclusions in diamonds in a number of kimberlite pipes.