Magnetite from Grayson County, Virginia, USA
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. | |
| Rocks & Min.:60:167. |
Dietrich, R. V. (1990) Minerals of Virginia. Virginia Geological Survey. | |
Dietrich, R. V. (1990) Minerals of Virginia. Virginia Geological Survey. |