THE CLAIMS LIE ON THE EDGE OF A MAJOR GRANITIC INTRUSION, THE PENNASK BATHOLITH OF MIDDLE JURAS- SIC AGE. THREE COEVAL STOCKS FORM THIS INTRUSION. THE OKANAGAN STOCK COMPRISES THE SOUTHERN LOBE. IT IS A COMPOSITE INTRUSIVE, PREDOMINANTLY GRANODIO- RITE AND LEUCOGRANITE WHICH HOSTS THE GRANITIC OTTER INTRUSIONS OF LATE CRETACEOUS OR TERTIARY AGE AND LATER ANDESITIC AND FELSIC DYKES, FEEDERS FOR THE PRINCETON GROUP VOLCANICS. PRESENCE OF BRECCIA, HYDROTHERMAL ALTERATION AND DISSEMINATED CRYSTALLINE PYRITE INDICATE POSSIBLE PORPHYRY TYPE MINERALIZATION.