Hematite from Lancaster County, Pennsylvania, USA
USA | |
| Geode - Berks Co. Min Soc., March '06 |
| www.delminsociety.net/fieldtrips/burkholder.htm |
| Mineral collecting in Pennsylvania - 1965, Lapham, Geyer Pgs. 88-89 |
| J. Wingard, Personal Observation 3-27-04 |
| Dana 6:1069. |
| Min, Col. in PA-1976 Geyer, Smith, Barnes. pgs. 139-141 |
| Min. Col. PA - 1976 Geyer, Smith and Barnes |
Min. Col. PA Geyer, Smith & Barns, Pgs. 147-149 |
Mud Lake - Grubb Lake, West Hempfield Township, Lancaster County, Pennsylvania, USA