| Deposit ID | 10068836 |
|---|---|
| MRDS ID | W002094 |
| Record type | Site |
| Current site name | Pirquitas Placer Mine |
| Alternate or previous names | San Marcos |
| Geographic coordinates: | -66.48723, -22.69197 (WGS84) |
|---|---|
| Elevation | 4100 |
| Relative position | 7 KM E OF CAMPAMENTO; AT AND WEST OF TOWN OF MINA PIRQUITAS ALONG RIO PIRCAS (PIRQUITAS) |
Political divisions (FIPS codes)
Jujuy(province)
Argentina(country)
South America(continent)
Land(continent)
| Country | State |
|---|---|
| Argentina | Jujuy |
| Commodity | Importance |
|---|---|
| Tin Critical | Primary |
| Gold | Secondary |
| Materials | Type of material |
|---|---|
| Cassiterite | Ore |
| Gold | Ore |
| Model code | 123 |
|---|---|
| USGS model code | 39e |
| Deposit model name | Alluvial placer Sn |
| Host or associated | Associated | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Rock type | Volcanic Rock (Aphanitic) | ||||||||
| Rock unit name | Volcanic & Sedimentary Rocks, Sandstone, Dacite Stock Of Cerro Galan, Dikes | ||||||||
| Rock description | Volcanic & Sedimentary Rocks, Sandstone, Dacite Stock Of Cerro Galan, Dikes | ||||||||
| |||||||||
| Host or associated | Host |
|---|---|
| Rock type | Unconsolidated Deposit > Gravel |
| Host or associated | Host |
|---|---|
| Rock type | Sedimentary Rock > Clastic Sedimentary Rock > Conglomerate |
| Rock unit name | Metamorphic Rocks, Phyllite, Schist, Quartzite, Talc Rock |
| Rock description | Metamorphic Rocks, Phyllite, Schist, Quartzite, Talc Rock |
| (1) | -66.48723, -22.69197 |
|---|
| Type of structure | Regional |
|---|---|
| Structure description | High Plateau, Undrained Basins, N-Trending Steep Fault Block Ranges And Gentler Anticlinal Structures, Extinct Qat Volcanoes To W. |
| Type of structure | Local |
| Structure description | Two Systems Of Faults, Of Ord And Tert Ages Influenced The Course Of The Rio Pircas And Intrusion Of Cerro Galan |
| Length | 30000M |
|---|
| Development status | Past Producer |
|---|---|
| Commodity type | Metallic |
| Significant | No |
| Discovery year | 1930 |
| Discoverer | Alberto Picchetti |
| Year of first production | 1933 |
| Year of last production | 1939 |
| Production years | 1933-1939 |
| District name | Pirquitas-Coyaguayma |
|---|
| Type | Operator |
|---|---|
| Owner | Cia. Minera Pirquitas, Picchetti Y Cia. S. A. |
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| USGS | Mineral Resources Data System | MRDS | W002094 |
ANGELELLI, V., FERNANDEZ LIMA, J. C., HERRERA, A., AND ARISTARAIN, L., 1970, DESCRIPCION DEL MAPA METALOGENETICO DE LA REPUBLICA ARGENTINA: DIRRECION NACIONAL DE GEOLOGIA Y MINERIA, P. 67 (SPANISH)
TURNER, J.C.M., 1982, DESCRIPCION GEOLOGICA DE LA HOJA 3AB, MINA PIRQUITAS: DNGM BOL. 187, P. 44-45.
ANGELELLI, 1970, REF
| Subject category | Comment text |
|---|---|
| Deposit | LPLEIST TERRACE CONGLOMERATES OCCUR 50 M ABOVE MODERN RIVER BED. THESE ARE CEMENTED BY FE OXIDES AND CONTAIN A BASAL LAYER, 5-10 CM THICK WITH LOW CONCENTRATIONS OF CASSITERITE. A HOLOCENE TALUS FAN, 400 M WIDE, CONTAINS A LAYER 0.6 - 1.5 M THICK AVERAGING 15 KG CASSITERITE PER CUBIC METER WITH A FEW COLORS OF GOLD. THIS LAYER IS COVERED BY UP TO 5 M OF BARREN TALUS AND ALLUVIUM. |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 01-AUG-1973 | Davidson, Claire B. | U.S. Geological Survey | |
| Updater | 01-FEB-1993 | Long, Keith R. | U.S. Geological Survey |
Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.