of orbicular ijolites from the Prairie Lake complex, Marathon, Ontario: Textural evidence from rare processes...of orbicular ijolites from the Prairie Lake complex, Marathon, Ontario: Textural evidence from rare processes...of orbicular ijolites from the Prairie Lake complex, Marathon, Ontario: SHANNON E. ZUREVINSKI* and ROGER...Department of Geology, Lakehead University, Thunder Bay, ON, CANADA P7B 5E1 *Corresponding author. Telephone:...ijolite at the 1.1 Ga Prairie Lake Carbonatite Complex (Marathon, Ontario, Canada), and is the only known |