Perry, V.D., 1961, The significance of mineralized breccia pipes: Mining Engineering, v. 13, no. 4, p. 367-376. Authors Perry, V.D. Publication Date 1961 Citation Mining Engineering, v. 13, no. 4, p. 367-376. State MEX Keywords Mineral District Breccia Igneous Petrology More Keywords Mineral District, Breccia, Igneous Petrology, AzGeoBib RefNum 7840