Gypsum from Carbon County, Pennsylvania, USA
USA | |
| Lapham & Geyer, 1965. Mineral Collecting in Pennsylvania |
| Confirmed by XRD by the New Mexico Bureau of Geology and Mineral resources. |
USA | |
| Lapham & Geyer, 1965. Mineral Collecting in Pennsylvania |
| Confirmed by XRD by the New Mexico Bureau of Geology and Mineral resources. |