Montmorillonite from selected localities.
USA | |
| Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 304; Schwartz, G.M. (1947), Hydrothermal alteration in the 'porphyry copper' deposits, Econ.Geol.: 42: 319-352; . |
| Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 304; Peterson, N.P. (1962), Geology and ore deposits of the Globe-Miami district, AZ, USGS PP 342: 79. |