Gold from Pennsylvania, USA
USA | |
| Smith, II, R. C. and Barnes, J.H. (2008) Mineralogy, petrology, and mineralization of the Valley Quaries, Inc., Gettysburg Quarry, formerly the H. T. Campbel Quary, Adams County, Guidebook 73 rd Field Conference of Pennsylvania Geologists, p. 79 - 81. |
| Donald Schmerling Collection--Panned 07-03-1982 |
| Bob Rothernberg specimen |
| Gold in Southeastern Pennsylvania Jeri L. Jones, Donald W. Schmerling |
Franconia Township, Montgomery County, Pennsylvania, USA