Allophane from Appalachian Basin, North America Plate
USA | |
| Dean, Lewis S. (1995) Alabama Mineral Locality Index. Rocks & Minerals, 70 (5) 320-333 doi:10.1080/00357529.1995.9926642 |
| Lapham & Geyer, 1965. Mineral Collecting in Pennsylvania |
| Mineralogical Society of America - Handbook of Mineralogy |