Rutile from selected localities.
USA | |
| Pemberton, E. Earl: Minerals of California, 1983, Van Nostrand Reinhold, p. 171 |
| Schaller, Waldemar Theodore (1905a), Dumortierite: American Journal of Science, 4th. Series: 19: 211-224; […USGS Bulletin 262: 91-120]: 211; |
Dehesa, San Diego County, California, USA