no OIL ORO OIG ZoZ 292 Boulder County Tellurides .... 294 Boulder County Tungsten ...... eeoeeesee 296...(COLORADO-UTAH-NEW MEXICO-ARIZONA) ... 323 A. Rifle area, Colorado «0s... 323 B. Uravan District, Colorado...Mines p. 970-984 Ltd., 1970, Snow Geology Lake area, E. F., 1970, of the copper-zinc N. Manitoba:...sphalerite, Darwin Lead-Silver-Zinc mine, Inyo County, California, Econ. Geol., v. 66, p. 602-606 significance... Northern Pine copper deposit, Ontonagon County, 543-573 model for mineralization Michigan: |