Pyrrhotite from Lawrence County, South Dakota, USA
USA | |
| Metal Mining Mining Geol., A.I.M.E. (1937): 401. |
| Smith, Arthur E., Fritzsch, Eric (2000) SOUTH DAKOTA. Rocks & Minerals, 75 (3) 156-169 doi:10.1080/00357520009605635 |
Smith, Arthur E., Fritzsch, Eric (2000) SOUTH DAKOTA. Rocks & Minerals, 75 (3) 156-169 doi:10.1080/00357520009605635 | |
(2005) Mineral Resources Data System (MRDS), US Geological Survey. | |
(2005) Mineral Resources Data System (MRDS), US Geological Survey. | |
| Metal Mining Mining Geol., A.I.M.E. (1937): 400-401. |
| www.umr.edu/~rhagni/otherod.html. |
| 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. |
Homestake Mine, Lead, Lead Mining District, Lawrence County, South Dakota, USA