Rankin Kimberlites
Discovered in mid-90’s; described by Miller et al., 1998
Kimberlite dykes outside of Rankin Inlet, intrude greenschist grade metasedimentary rocks
Dyke orientation follows regional brittle structures (E-SE and NW)
Xenolith population dominated by host supracrustals
Age determination of 214.3 +/- 1Ma (Rb-Sr -phlogopite)
Late Triassic age is unique for N.A. Phanerozoic kimberlites