Two small masses of light grey to white recrystallized limestone of the Upper Pennsylvanian to Lower Permian Azure Lake Formation, Buttle Lake Group occur on the southeast side of Beauty Lake, within the Buttle Lake uplift. Refer to the H-W deposit (092F 330) for a discussion of the nomenclature revisions of the Buttle Lake uplift stratigraphy.

A 140 metre wide limestone mass adjacent to the lake shore strikes 072 degrees for 350 metres and dips 30 degrees south. A se- cond mass, 700 metres to the southeast, outcrops over a 280 by 420 metre area. Both masses are underlain to the north by volcanic brec- cia, tuff and argillite of the Paleozoic Sicker Group and are over- lain to the south by pillowed basalts of the Upper Triassic Karmutsen Formation.