Principal Mineral Areas of Canada, colour map. 1975. Canada Department of Energy, Mines and Resources. Mineral Development Sector and Geological Survey of Canada. Map 900A. 25th ed. Includes: Index to Principal Oil and Gas Fields January 1975. Mineral Production Statistical information. Index to Principal Producing Areas located on left side. Nonferrous Smelter or Refineries located on the right side. Geological Provinces located on top right.