Graphite from
Mexico | |
| Espinosa Perea, V. J. (1999). Magmatic evolution and geochemistry of the Piedras Verdes deposit, Sonora, Mexico. MS thesis University of Arizona |
| Pancnzer(1987):216. |
Mexico | |
| Espinosa Perea, V. J. (1999). Magmatic evolution and geochemistry of the Piedras Verdes deposit, Sonora, Mexico. MS thesis University of Arizona |
| Pancnzer(1987):216. |