Pyrolusite from selected localities.
USA | |
| NJ Geol. Survey Bull. 64 (1960), Mason, B. |
| NJ Geol. Survey Bull. #64, Trap Rock Minerals of NJ, Mason, B. (1960); Rocks & Min.: 59:157-183, Peters, Joseph J. (1984). |
| Minerals of the "Riverview Drive" quarry, Totowa, NJ, Pollinger, Mel (1975): 2-6. |