Sillimanite from selected localities.
USA | |
| Mineral Commodity Files, Asheville Regional Office , North Carolina Geological Survey; U.S. Geological Survey,2005, Mineral Resources Data System: U.S. Geological Survey,Reston,Virginia |
| U.S. Bureau of Mines/Spatial Data from the Minerals System/Mineral Industry Location System(Mas/Mils)CD-Rom,Sep,1995 |
Gems and Minerals of America-Jay Ellis Ransom-1974 |