Precambrian deposits of zinc-copper-lead sulfides and zinc spinel (gahnite) in Colorado : an interim report evaluating these Precambrian deposits as potential resources of base and precious metals /
Sheridan, Douglas M.,1921-
Raymond, William H.
Geological Survey (U.S.)
Washington : U.S. G.P.O.,
1984.
Bibliography: p. 28-31.
Sulfides
Geology, Stratigraphic
Geology