Vermiculite from
USA | |
| Dietrich, R. V. (1990) Minerals of Virginia. Virginia Geological Survey. |
| Dietrich, R. V. (1990) Minerals of Virginia. Virginia Geological Survey. |
Dietrich, R. V. (1990) Minerals of Virginia. Virginia Geological Survey. |
USA | |
| Dietrich, R. V. (1990) Minerals of Virginia. Virginia Geological Survey. |
| Dietrich, R. V. (1990) Minerals of Virginia. Virginia Geological Survey. |
Dietrich, R. V. (1990) Minerals of Virginia. Virginia Geological Survey. |