Two hundred kg of the dike 1 olivine lamproite were processed producing a concentrate extremely rich in chrome spinels of lherzolitic origin. One hundred kg of dike 2 was processed, and in addition to lherzolitic spinels, the sample produced chrome pyropes, chrome diopsides and a few chromites in the diamond inclusion field and one picroilmenite. Also a few kg sample of the interstitial clay of the dike 2 wall rock was processed and studied revealing the same heavy minerals as in the dike. A CaO versus Cr 2 O 3 plot of the chrome pyrope grains from till and dike 2 is presented in Fig. 4 . In fact the dike garnets are compositionally indistinguishable from kimberlite megacryst compositions.
Further inspection reveals that one grain of megacryst pyrope composition was also found in till.
Conclusions - Kimberlitic and diamond indicator minerals have been found in eighteen till samples and lamproitic dikes in the Lentiira Area. The existence of olivine lamproites in the area is no surprising given the information on the Russian side of the border where there is an abundance of such dikes. Based on the indicator compositions from dike 2, it is unlikely that this dike is an olivine lamproite as we first thought and more logically belongs to the Group I kimberlite description. However, this inference is based solely on xenocrysts from dike 2 samples and should be backed up by petrologic and geochemical study of fresher dike material if such becomes available. 7th IKC Proc.