Carbonate rocks dominantly consist of carbonate minerals such as calcite, aragonite or dolomite. Limestone, dolomite and bauxite are abundant. Commonly associated minerals include pyrite, pyrrhotite, galena, sphalerite, fluorite, dolomite, and calcite. The Canadian Rockies are composed of sedimentary rock, including shale, sandstone, dolomite and limestone. These valleys are underlain by limestone or dolomite. Crystals of calcite, quartz, dolomite or barite may line small cavities in the rock. Commercial production includes coal, dolomite, gypsum, and limestone. Several caves have developed in dolomite and limestone. Other than peat, dolomite, and limestone, natural resources are scarce. Many are intergrown with other minerals, such as calcite and dolomite. Minneopa State Park is underlain by flat layers of dolomite and sandstone. Tremolite forms by metamorphism of sediments rich in dolomite and quartz. Other major mineral reserves include those of coal, coalbed methane, manganese and dolomite. The rock formation consists of three members&colon; lower shale, middle dolomite, and upper shale. It occurs as an alteration mineral in serpentinite in association with serpentine, dolomite and hematite.