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USA | |
| Cannon, Bart (1975) Minerals of Washington. Cordilleran, Mercer Island, WA. Valentine, Grant M., Huntting, Marshall T. (1956) Part I - Nonmetallic minerals, in Inventory of Washington Minerals. Bulletin 37, Washington Geological Survey. |
- Silver Hill Mining District
| Cannon, Bart (1975) Minerals of Washington. Cordilleran, Mercer Island, WA. |
| Cannon, Bart (1975) Minerals of Washington. Cordilleran, Mercer Island, WA. |
| Cannon, Bart (1975) Minerals of Washington. Cordilleran, Mercer Island, WA. |