Thorite from
USA | |
| U.S Bureau of Mines/Spatial Data from the Minerals System/Mineral Industry Location System(Mas/Mils)CD-Rom,Sep,1995 |
| Bernard, Jan, Hyršl, Jaroslav (2004) Minerals and their Localities (1st ed.) Granit, Prague. |
| Rocks & min.:60:90 Dana 6:485,1076. |