Quartz from selected localities.
Dominican Republic | |
| Alfredo Petrov field observations, January 2011. |
| [var: Chalcedony] Steiner (1996) Lapis 21(1) |
Dominican Republic | |
| Alfredo Petrov field observations, January 2011. |
| [var: Chalcedony] Steiner (1996) Lapis 21(1) |