Willemite from selected localities.
USA | |
| Rocks & Min.:63:327 & 64:58. |
Galbraith, F.W. & Brennan (1959), Minerals of AZ: 96. | |
| Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 420; Jones, D. (1983), The Old Yuma mine, Min.Rec.: 14: 95-107, 326; Rocks & Min.:64:58. |