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USA | |
| [var. Fairburn Agate] Clark, A. M. (1993) Hey's Mineral Index - Mineral Species, Varieties and Synonyms (3rd ed.) Natural History Museum, London. |
| [var. Fairburn Agate] Clark, Roger (2002) Fairburn Agate: Gem of South Dakota (Silverwind Agates, Publ., Appleton WI) pgs. 21,24,79 et al. |
| [var. Fairburn Agate] Clark, Roger (2002) Fairburn Agate: Gem of South Dakota (Silverwind Agates, Publ., Appleton WI) pgs. 21,24,79 et al. |
| [var. Fairburn Agate] Clark, Roger (2002) Fairburn Agate: Gem of South Dakota (Silverwind Agates, Publ., Appleton WI) pgs. 21,24,79 et al. |
| [var. Fairburn Agate] |
| [var. Fairburn Agate] Lapidary Journal, v. 33, no. 6, p. 1410-1415 |
| [var. Fairburn Agate] |
| [var. Fairburn Agate] |
Fairburn, Custer County, South Dakota, USA