Northgate Fluorspar District

Cox, D.C., Benson, W.E.B., Steven, T.A., and Van Alstine, R.E., 1948, Flurospar deposits of the Northgate District, Jackson County, Colorado: U.S. Geological Survey Strategic Minerals Investigations Report 3-220, 14 p. [(200)St8pr no.3-220]Neubert, J.W., and Dersch, J.S., 1994, Mineral Appraisal of Routt National Forest, Colorado: USBM MLA 13-94, 64 p., 6 appendices.Steven, T.A., 1960, Geology and fluorspar deposits, Northgate district, Colorado: USGS Bull. 1082-F, p. 323-422.Van Alstine, R.E., 1947, Fluorspar Investigations -- Northgate District, Jackson County, in Vanderwilt, J.W., Mineral Resources of Colorado: State of Colorado Mineral Resources Board, p. 457-465.WARNE, J. D., 1947, NORTHGATE FLUORSPAR, JACKSON COUNTY, COLO.: U.S. BUREAU OF MINES RESEARCH INVESTIGATIONS RI-4106, 23 p.