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USA | |
| Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 424 Creasy, S.C. & G.L. Quick (1955), Copper deposits of part of Helvetia mining district, Pima Co., AZ, USGS Bull. 1027-F: 312. |
| MRDS database Dep. ID file #10039406, MRDS ID #M050038. |
| MRDS database Dep. ID file #10103734, MRDS ID #M050045. |
| MRDS database Dep. ID file #10039611, MRDS ID #M050490. |
| Galbraith, F.W. & D.J. Brennan (1959), Minerals of AZ: 91. |
| MRDS database Dep. ID file #10093270, MRDS ID #TC38411. |
Chicago Mine, Rosemont, Helvetia-Rosemont Mining District, Pima County, Arizona, USA