Wad from selected localities.
USA | |
| Galbraith, F.W. & D.J. Brennan (1959), Minerals of AZ: 32. |
| Jones, E.L., Jr. & F.L. Ransome (1920), Deposits of manganese ore in Arizona, USGS Bull. 710-D: 169. |
USA | |
| Galbraith, F.W. & D.J. Brennan (1959), Minerals of AZ: 32. |
| Jones, E.L., Jr. & F.L. Ransome (1920), Deposits of manganese ore in Arizona, USGS Bull. 710-D: 169. |