Quartz from selected localities.
Bolivia | |
| D. Richter, et al (1992) Cerro Bonete Area. (in USGS Bulletin # 1975) (pers. comm. Hernan Uribe, 1990) |
USGS Bulletin # 1975, p. 251. |
Bolivia | |
| D. Richter, et al (1992) Cerro Bonete Area. (in USGS Bulletin # 1975) (pers. comm. Hernan Uribe, 1990) |
USGS Bulletin # 1975, p. 251. |