| Lat / long: | 32.9515, -107.50199 |
| Primary: | Gold |
| Secondary: | Silver |
| Tertiary: | Osmium, Iridium, Platinum |
| Ore: | Gold, Iridosmine, Silver |
| Gangue: | Limonite, Magnetite, Pyrite |
| Orebody form: | STREAM SEDIMENT DEPOSITS |
| Operation type: | Unknown |
| Deposit type: | Stream Placer |
| Production size: | Medium |
| Development status: | Producer |
| First production started: | 1877 |
| Last production ended: | 1975 |
| Host rock: | Santa Fe |
| Host type: | Gravel |
| Associated type: | Monzonite,Latite,Andesite |
| Structure: | Fault With About 2,000 Ft Displacement, Quartz Monzonite Porphyry And Mineralized Veins Occur 2 Mi East And Upstream From Placer Sites. A Caliche Layer Separates Gold-Bearing Gravels From Barren Gravels. |
| Tectonic: | Basin And Range |
| Alteration processes: | Oxidation Of Auriferous Pyrite To Pseudomorphs Of Limonite Which Retain Gold Gives The Black Sand Concentrates A Commercial Value For Smelter Treatment. |
| MRDS | M045549 |
| DEP | 10038244 |
| Reference | {Deposit:: NORTHROP, S.A., 1959, MINERALS OF NEW MEXICO, REVISED EDITION: ALBUQUERQUE, UNIVERSITY OF NEW MEXICO PRESS, P. 300.}{Deposit:: JONES, F.A., 1904, NEW MEXICO MINES AND MINERALS (WORL* FAIR ED.): SANTA FE, NEW MEXICO PRINTING CO., P. 349.}{Deposit:: JOHNSON, M.G., 1972, PLACER GOLD DEPOSITS OF NEW MEXICO: U.S. GEOLOGICAL SURVEY BULLETIN 1348, P. 25-26.}{Deposit:: HARLEY, G.T., 1934, THE GEOLOGY AND ORE DEPOSITS OF SIERRA COUNTY, NEW MEXICO: NEW MEXICO BUREAU OF MINES AND MINERAL RESOURCES BULLETIN 10, P. 166-169.}{Deposit:: LINDGREN, WALDEMAR, GRATON, L.C., AND GORDON, C.H., 1910, THE ORE DEPOSITS OF NEW MEXICO: U.S. GEOLOGICAL SURVEY PROFESSIONAL PAPER 68, P. 272-276.}{Production:: HARLEY, 1934, P. 141} |
| Reporter | Blair, Will N., Menzie, David, Peterson, Jocelyn A. |