Pyrrhotite from selected localities.
USA | |
| Inventory of Washington Minerals, Part II, Metalic Minerals, Vol. 1; M. Huntting, 1956 |
| Metal Mines of Washington-Preliminary Report; Derkey, Joseph, Lasmanis |
USA | |
| Inventory of Washington Minerals, Part II, Metalic Minerals, Vol. 1; M. Huntting, 1956 |
| Metal Mines of Washington-Preliminary Report; Derkey, Joseph, Lasmanis |