Erionite Subgroup from selected localities.
USA | |
| Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd. ed.: 216; Thomssen, R.W. (1983), The minerals of Malpais Hill, Pinal Co., AZ, Min.Rec.: 14: 109-113. |
| Thomssen, R.W. (1983), The minerals of Malpais Hill, Pinal Co., AZ, Min.Rec.: 14: 109-113. |
North railway cut, Malpais Hill, Dudleyville, Pinal County, Arizona, USA