| Lat / long: | 44.35607, -103.76501 |
| Primary: | Gold |
| Secondary: | Silver |
| Ore: | Gold |
| Gangue: | Chlorite, Pyrite, Pyrrhotite |
| Orebody form: | ORE BODIES ARE IRREGULAR PIPELIKE STRUCTURES |
| Discovery year: | 1875 |
| Operation type: | Unknown |
| Deposit type: | Stratabound |
| Production size: | Small |
| Development status: | Producer |
| Host type: | Iron Formation |
| Associated type: | Plutonic Rock |
| Structure: | Black Hills, The Rocks Are In A Set Of Large Isoclina Folds That Have Been Refolded By Two Sets Of Smaller Folds, Which Result In Extremely Complex Configurations. Also Warping Is Caused By Tertiary Igneous Rocks And The Dome Formed Around The Cutting Stock, Exposed West Of Lead. Ore Bodies Are Located In The Younger Set Of Crossfolds. |
| MRDS | SD01966 |
| DEP | 10106953 |
| Reference | {Deposit:: U. S. GEOLOGICAL SURVEY, U. S. BUREAU OF RECLAMATION, AND SOUTH DAKOTA GEOLOGICAL SURVEY, 1975 , MINERAL AND WATER RESOURCES OF SOUTH DAKOTA, SOUTH DAKOTA GEOLOGICAL SURVEY BULLETIN 16}{Deposit:: ROBERTS, W. L., AND RAPP, GEORGE, 1965 , MINERALOGY OF THE BLACK HILLS, SOUTH DAKOTA SCHOOL OF MINES AND TECHNOLOGY BULLETIN 18} |
| Reporter | Barari, Rachel A. |