Bentonite from New Zealand
New Zealand | |
| Niethe, A. (1969) Mount Somers, The New Zealand Lapidary, September 1969. |
| Carlson, J.R., Rodgers, K.A. (1974) The Coalgate Bentonite. A Ferriferrous-Beidellite Deposit from Canterbury, New Zealand. Clay Minerals: 10: 153-172. |