Ferro-hornblende from selected localities.
USA | |
| Rutgers Univ. Bull. #5, Pt 1: 42. |
| The Iron Mines of NJ (1910), Bayley:451.; U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.; The Iron Mines of New Jersey (1910), Bayley:451-452 |
| NJ State Geol. Ann. Rpt.: (1856):228. |
The Iron Mines of NJ (1910), Bayley:455. | |
| The Iron Mines of NJ (1910), Bayley:410 & 415; NJ State Geol. Ann. Rpt. (1856):187, 191-192. |