| Location: | Sierra County, New Mexico, United States, North America |
| Lat / long: | 32.9515, -107.50199 |
| dep_id: | 10038244 |
| mrds_id: | M045549 |
| Commodity type: | metallic |
| Major mineral: | Gold |
| Minor mineral: | Silver |
| Trace mineral: | Osmium, Iridium, Platinum |
| Operation type: | Unknown |
| Deposit type: | Stream Placer |
| Production size: | Medium ammount of material produced |
| Development status: | Producer |
| ore: | Gold, Iridosmine, Silver |
| gangue: | Limonite, Magnetite, Pyrite |
| orebody_fm: | STREAM SEDIMENT DEPOSITS |
| work_type: | Surface/Underground |
| model: | 119: Placer Au-PGE |
| alteration: | Oxidation Of Auriferous Pyrite To Pseudomorphs Of Limonite Which Retain Gold Gives The Black Sand Concentrates A Commercial Value For Smelter Treatment. |
| ore_ctrl: | Caliche Horizon Usually Separates Upper Part Of Fan Containing Andesite, Latite, Monzonite, And Gold Fragments From Lower Barren Part Of Fan Containing Rhyolite Fragments. |
| Reporter: | Blair, Will N., Menzie, David, Peterson, Jocelyn A. |
| hrock_unit: | Santa Fe |
| hrock_type: | Gravel |
| arock_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 |
| Year first produced: | 1877 |
| ylp_ba: | > |
| yr_lst_prd: | 1975 |
| References: |
- 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
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