Fluorite from Lancaster County, Pennsylvania, USA
USA | |
| www.delminsociety.net/fieldtrips/burkholder.htm |
various photographs | |
| www.delminsociety.net (n.d.) http://www.delminsociety.net/kurtz.htm |
| Mineral collecting in Pennsylvania - 1965, Lapham, Geyer Pgs. 88-89 |
| Collected David S. Bernstein- May of 2009. |
| J. Wingard, Personal Observation 3-27-04 |
| Min, Col. in PA-1976 Geyer, Smith, Barnes. pgs. 139-141 |
Oberholtzer Quarry, Martindale, Earl Township, Lancaster County, Pennsylvania, USA