Willemite from Tucson Mountains, Pima County, Arizona, USA
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, Dick (1983) Famous Mineral Localities: the Old Yuma Mine [Arizona]. The Mineralogical Record, 14 (2) 95-107 Rocks & Min.:64:58. |