Sillimanite from
USA | |
| Hietanen, Anna, 1959, Kyanite-Garnet Gedritite near Orofino, Idaho, American Mineralogist, 44: 539-564. |
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |
| Beste, Bob (2005) Location Guide for Rockhounds in the United States (3rd ed.) |