The Ida showing is located on the northeast slope of Mount McGuire, about 11.0 kilometres northeast of Alice Arm.

The showing consists of an outcrop containing a persistent, flat lying, 5 to 30 centimetre wide quartz vein. The vein is developed in biotite hornfelsed sediments of the Upper Triassic Stuhini Group. Contact metamorphism of the sediments is a result of the intrusion of four small, closely spaced, quartz monzonite stocks of the Eocene Alice Arm Plutonic Suite just east of the Ida showing. These stocks host the Ajax molybdenum deposit (103P 223). The vein is mineralized with sphalerite and traces of disseminated galena.