Wad from South Dakota, USA
USA | |
| Matrix 10:2 pp 81-90 |
| Roberts, Willard Lincoln, Rapp, George Jr. (1965) Mineralogy of the Black Hills. Bulletin 18. South Dakota School of Mines and Technology |
Roberts, Willard Lincoln, Rapp, George Jr. (1965) Mineralogy of the Black Hills. Bulletin 18. South Dakota School of Mines and Technology | |
(2005) Mineral Resources Data System (MRDS), US Geological Survey. | |
| Vickers, R. C. (1954). Occurrences of radioactive minerals in the Bald Mountain gold-mining area, northern Black Hills, South Dakota: US Geol. Survey Circ, 351(8). |
| Roberts, Willard Lincoln, Rapp, George Jr. (1965) Mineralogy of the Black Hills. Bulletin 18. South Dakota School of Mines and Technology |