|
USA | |
| Campbell, T.J., Roberts, W.L. (1985) Mineral Localities in the Black Hills of South Dakota. Rocks & Minerals: 60(3): 109-118 (117). |
| Roberts, Willard L., Campbell, Thomas J. (1986) Phosphate Minerals from the Tip Top Mine, Black Hills, South Dakota. The Mineralogical Record, 17 (4) 237-254 Rocks & Minerals: 60: 117. |
| Smith, Arthur E., Fritzsch, Eric (2000) SOUTH DAKOTA. Rocks & Minerals, 75 (3) 156-169 doi:10.1080/00357520009605635 |
| Campbell, T.J., Roberts, W.L. (1985) Mineral Localities in the Black Hills of South Dakota. Rocks & Minerals: 60(3): 109-118 (116). |
| Smith, Arthur E., Fritzsch, Eric (2000) SOUTH DAKOTA. Rocks & Minerals, 75 (3) 156-169 doi:10.1080/00357520009605635 |
| Anthony, John W., Bideaux, Richard A., Bladh, Kenneth W., Nichols, Monte C. - Eds. (2016) Handbook of Mineralogy. https://www.handbookofmineralogy.org/ |
| Smith, Arthur E., Fritzsch, Eric (2000) SOUTH DAKOTA. Rocks & Minerals, 75 (3) 156-169 doi:10.1080/00357520009605635 |
| Rocks & Minerals: 57: 160 &/or 60:110 & 112. |
| |
Big Chief Mine, Glendale, Keystone Mining District, Pennington County, South Dakota, USA