Montmorillonite from selected localities.
USA | |
| Singer, D.A., Berger, V.I., and Moring, B.C. (2008): US Geological Survey Open-File Report 2008-1155. |
| Galbraith, F.W. (1947), Minerals of Arizona, AZ Bur. Mines Bull. 153: 305. |
USA | |
| Singer, D.A., Berger, V.I., and Moring, B.C. (2008): US Geological Survey Open-File Report 2008-1155. |
| Galbraith, F.W. (1947), Minerals of Arizona, AZ Bur. Mines Bull. 153: 305. |