| Deposit ID | 10058076 |
|---|---|
| MRDS ID | TC03831 |
| Record type | Site |
| Current site name | 4 Amigos-Union-Bienvenida |
| Geographic coordinates: | -69.91758, -26.72415 (WGS84) |
|---|---|
| Elevation | 1650 |
Political divisions (FIPS codes)
Chile(country)
South America(continent)
Land(continent)
| Country |
|---|
| Chile |
| Commodity | Importance |
|---|---|
| Gold | Primary |
| Silver | Secondary |
| Copper | Secondary |
| Materials | Type of material |
|---|---|
| Chalcocite | Ore |
| Covellite | Ore |
| Gold | Ore |
| Pyrite | Ore |
| Calcite | Gangue |
| Quartz | Gangue |
| Result | 20-40 G/T AU |
|---|---|
| Result | 5-10 G/T AU IN PRIMARY ZONE. |
| Host or associated | Associated | ||||||
|---|---|---|---|---|---|---|---|
| Rock type | Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite | ||||||
| Rock unit name | Bandurrias Formation | ||||||
| Rock description | Bandurrias Formation | ||||||
| |||||||
| Host or associated | Host |
|---|---|
| Rock type | Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite |
| (1) | -69.91758, -26.72415 |
|---|
| Strike | N40E |
|---|---|
| Dip | 60NW |
| Length | 600M |
| Width | 0.8M |
| Development status | Past Producer |
|---|---|
| Commodity type | Metallic |
| Deposit size | Small |
| Significant | No |
| District name | Inca De Oro |
|---|
| Year | 1940 | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Material | ORE | ||||||||||||||
| Accuracy | Accurate | ||||||||||||||
| Description | Ap_Grade: ^11.4 G/T Au (Bienvenida) | ||||||||||||||
| |||||||||||||||
| Year | 1940 | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Material | ORE | ||||||||||||||
| Accuracy | Accurate | ||||||||||||||
| Description | Ap_Grade: ^17.3 G.T Au (Union) | ||||||||||||||
| |||||||||||||||
| Year | 1940 | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Material | ORE | ||||||||||||||
| Accuracy | Accurate | ||||||||||||||
| Description | Ap_Grade: ^17.8 G/T Au (4 Amigos) | ||||||||||||||
| |||||||||||||||
| Type of workings | Underground |
|---|---|
| Overall depth | 200M |
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| USGS | Mineral Resources Data System | MRDS | TC03831 |
RUIZ, C. Y PEEBLES, F., 1988, YACIMIENTOS METALIFEROS DE CHILE; SANTIAGO, 334 P.
FLORES, H. Y RUIZ, C., 1946, ESTUDIO GEOLOGICO DEL DISTRITO DE INCA DE ORO, PROVINCIA ATACAMA: IPIMIGEO 2, 2, P. 243-273.
CAMUS, F. Y DUHALDE, M.A., 1982, GEOLOGIA DE LOS YACIMIENTOS HIDROTERMALES DE ORO EN CHILE: REV. GEOL. DE CHILE, 17, P. 47-70.
DIAZ, ET AL., 1980, MAPA METALOGENICO PRONOSTICO DE LA III REGION: CORPORACION DE FOMENTO DE LA PRODUCCION, SANTIAGO (5 VOLS.).
SALINAS, M., 1973, IIG #1552.
CIMRI
| Subject category | Comment text |
|---|---|
| Deposit | VERTICAL ZONATION OF, FROM SURFACE, QTZ-PY-AU TO CP-PY-QTZ TO PY-QTZ-CAL |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 01-SEP-1990 | Williams, William C. | University of Arizona |
Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.