Nontronite from Cochise County, Arizona, USA
USA | |
| Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 176 |
| Hill, C.A. (1999) Mineralogy of Kartchner Caverns, Arizona, Journal of Cave and Karst Studies: 61(2): 73-78 www.caves.org |
USA | |
| Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 176 |
| Hill, C.A. (1999) Mineralogy of Kartchner Caverns, Arizona, Journal of Cave and Karst Studies: 61(2): 73-78 www.caves.org |