Cowlesite from Pioneer Mining District (Superior Mining District), Pinal County, Arizona, USA
USA (FRL) | |
| Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 109, 160, 191, 230, 305, 395 Wise, William S., Tschernich, Rudy W. (1975) Cowlesite a new Ca-zeolite. American Mineralogist, 60 (11-12) 951-956 |
| Luetcke, Rolf (n.d.) Personal communication. |
Unnamed wash, adjacent to State Route 177, Superior area, Pinal County, Arizona, USA