Skarn

Knoerr, A., and Eigo, M., 1963, Arizona's newest copper producer--The Christmas mine: Engineering and Mining Journal, v. 164, no. 1, p. 55-67.

Kerr, P.F., 1951, Alteration features at Silver Bell, Arizona: Geological Society of America Bulletin, v. 62, no. 5, p. 451-480.

Kellogg, L.O., 1906, Sketch of the geology and ore deposits of the Cochise mining district, Cochise County, Arizona: Economic Geology, v. 1, p. 651-659.

Kellogg, L.O., 1906, Notes on the geology of the Cochise mining district, Arizona: New York, Columbia University, M.S. thesis.

Keith, Stanley B., Schnabel, L., DeWitt, E., Gest, D.E., and Wilt, J.C., 1983, Map, description and bibliography of the mineralized areas of the Basin and Range province in Arizona: U.S. Geological Survey Open-File Report 84-0086, 129 p., 1 sheet, scale 1:500,000.

Kantor, J.A., 1975, Subsurface structure and alteration on the flanks of the Little Dragoon Mountains, Cochise County, Arizona [abs.], in Seager, W.R., Clemons, R.E., and Callender, J.F., eds., Guidebook of the Las Cruces Country: New Mexico Geological Society 26th Field Conference Guidebook, p. 340-341.

Journeay, J.A., 1959, Pyrometasomatic deposits at Pima mine [abstracted from Thurmond, and others, 1958], in Heindl, L.A., ed., Southern Arizona Guidebook II, combined with the 2nd annual Arizona Geological Society Digest: Arizona Geological Society, p. 197-199.

Johnson, V.H., 1949, Geology of the Helvetia mining district, Pima County, Arizona [abs.]: Economic Geology, v. 44, no. 7, p. 639-640.

Johnson, V.H., 1949, Geology of the Helvetia mining district, Pima County, Arizona [abs.]: Geological Society of America Bulletin, v. 60, p. 1900-1901.

Johnson, V.H., 1941, Geology of the Helvetia mining district, Pima County, Arizona: Tucson, University of Arizona, Ph.D. dissertation, 111 p.