Approach wasn't too bad following cairns over talus instead of the bush close to Mountaineer Creek. Perfect snow for cramponing up to the small basin N of Argonaut then the couloir was in great shape. Lots of places to place pro as we simulclimbed the couloir, then climbed a wet, sort of snow covered 5.6 chimney to reach the upper snowfield. Scramble on the ridge to summit was covered in fresh snow! Beautiful views of Stuart. On the descent, we rapped off to the east in 2 30 meter rappels, one from a rock with pre-placed sling and a second from a small tree. Then traversed right on a snow covered ledge to the east gully. Glissade down the Colchuck glacier was incredible!