Tetradymite from selected localities.
USA | |
| South Dakota SMT Bull 18 Roberts and Rapp "Mineralogy of the Black Hills" |
SDSMT Bull 18 Roberts and Rapp "Mineralogy of the Black Hills" |
USA | |
| South Dakota SMT Bull 18 Roberts and Rapp "Mineralogy of the Black Hills" |
SDSMT Bull 18 Roberts and Rapp "Mineralogy of the Black Hills" |