Sedum lanceolatum is one of only three Sedum species to be found in Alberta. It's common here in montane and alpine areas on "dry slopes and ridges" and also occurs as a disjunct population in the Cypress Hills in SE Alberta and SW Saskatchewan (ref: Flora of Alberta).
First an extremely generalized range map from USDA Plants (note that plant distributions in USDA Plants are shown using political boundaries, rather than actual ranges that might be based on environment, elevation, etc.):
Some more specific range maps and accounts:
(edit: first two links not working, replaced first with an alternate one + fixed 2nd link. MMcD)