Apatite from selected localities.
USA | |
| Mineralogy of Pennsylvania-1922; Samuel S. Gordon, pg. 167 |
| Mineralogy of Pennsylvania-1922; Samuel S. Gordon, pg. 171 |
USA | |
| Mineralogy of Pennsylvania-1922; Samuel S. Gordon, pg. 167 |
| Mineralogy of Pennsylvania-1922; Samuel S. Gordon, pg. 171 |