Nickelzippeite from USA
USA | |
| Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 313 Frondel, C., et al (1976), Mineralogy of the zippeite group, Canadian Mineralogist: 14: 429-436 |
| Clifford Frondel, Jun Ito, Russel M. Honea and Alice M. Weeks (1976) Mineralogy of the Zippeite Group :Canadian Mineralogist Vol.14 pp.429-436 |