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USA | |
- San Poil Mining District (Keller Mining District)
| Valentine, Grant M., Huntting, Marshall T. (1960) Part II - Metallic Minerals, in Inventory of Washington Minerals. Vol II. Bulletin 37, Washington Geological Survey. Valentine, Grant M., Huntting, Marshall T. (1956) Part I - Nonmetallic minerals, in Inventory of Washington Minerals. Bulletin 37, Washington Geological Survey. |
- Conconully Mining District
| Valentine, Grant M., Huntting, Marshall T. (1956) Part I - Nonmetallic minerals, in Inventory of Washington Minerals. Bulletin 37, Washington Geological Survey. |
| Alfredo Petrov ID by visual and physical properties, and expansion on heating, on specimen field collected by John Lindell. |
| Cannon, Bart (1975) Minerals of Washington. Cordilleran, Mercer Island, WA. |
| 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. |