Sauconite from Lehigh County, Pennsylvania, USA
USA (FRL) | |
| Rocks & Minerals (1955) 30:394 Arthur Montgomery The Mineralogy of Pennsylvania, 1922-1965, pg. 52 pub#9 Acadamy of Natural Sciences, Philadelphia, PA |
| Rocks & Min.: 6:26 10:33-36, 58. |
USA (FRL) | |
| Rocks & Minerals (1955) 30:394 Arthur Montgomery The Mineralogy of Pennsylvania, 1922-1965, pg. 52 pub#9 Acadamy of Natural Sciences, Philadelphia, PA |
| Rocks & Min.: 6:26 10:33-36, 58. |
Friedensville Mine, Friedensville, Saucon Valley, Upper Saucon Township, Lehigh County, Pennsylvania, USA