Saponite from selected localities.
USA | |
| Ref.: Morris Jr., T. (1983) Michigan Mineralogy: A Locality Index. Rocks & Minerals: 58(3): 112.; Huizing, M.E. (1988) Museum Notes and Announcements. Rocks & Minerals: 63(6): 494.; Rosemeyer, T. (1990) Through the Scope: Microminerals of the Caledonia Mine Ontonagon County, Michigan. Rocks & Minerals: 65(3): 240-243.. |
| Robinson, George, 2004, Mineralogy of Michigan |
Caledonia Mine, Mass City, Ontonagon County, Michigan, USA