| Deposit ID | 10005927 |
|---|---|
| MRDS ID | BL10127 |
| Record type | Site |
| Current site name | Cobrizos Mine |
| Geographic coordinates: | -67.20947, -20.99118 (WGS84) |
|---|---|
| Elevation | 3740 |
| Relative position | 21 KM S20E OF RIO GRANDE, 125 KM BY ROAD FROM UYUNI |
Political divisions (FIPS codes)
Potosi(province)
Bolivia(country)
South America(continent)
Land(continent)
Federal lands
Federal(land status)
| Country | State |
|---|---|
| Bolivia | Potosi |
| Commodity | Importance |
|---|---|
| Copper | Primary |
| Silver | Primary |
| Materials | Type of material |
|---|---|
| Chalcocite | Ore |
| Covellite | Ore |
| Cuprite | Ore |
| Malachite | Ore |
| Silver | Ore |
| Calcite | Gangue |
| Gypsum | Gangue |
| Travertine | Gangue |
| Result | ORE ANALYSES GEOBOL (1971): IN TRAVERTINE: 3.27% CU OVER 0.72 M |
|---|---|
| Result | IN SANDSTONE: 0.94% CU OVER 0.49 M |
| Model code | 197 |
|---|---|
| USGS model code | 30b |
| Deposit model name | Sediment-hosted Cu |
| Mark3 model number | 63 |
| Host or associated | Host |
|---|---|
| Rock type | Sedimentary Rock > Carbonate > Limestone |
| Rock unit name | Potoco;Minchin |
| Rock description | Potoco;Minchin |
| (1) | -67.20947, -20.99118 |
|---|
| General form | LENTICULAR, IRREGULAR |
|---|---|
| Depth to top | 0M |
| Depth to bottom | 60M |
| Development status | Producer |
|---|---|
| Commodity type | Metallic |
| Deposit size | Medium |
| Significant | No |
| Discoverer | Spanish Colonists |
| Ownership category | Federal |
|---|
| Type | Owner-Operator |
|---|---|
| Owner | Corporacion Minera De Bolivia (Comibol) |
| Type | In-situ | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Estimate year | 1957 | ||||||||||||||
| Total resources | 400000000mt ore | ||||||||||||||
| |||||||||||||||
| Type | Tailings | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Estimate year | 1967 | ||||||||||||||
| Total resources | 25000000mt ore | ||||||||||||||
| |||||||||||||||
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| USGS | Mineral Resources Data System | MRDS | BL10127 |
SERVICIO GEOLOGICO DE BOLIVIA, 1971, MINA COBRIZAS: PROYECTO LIPEZ-COMIBOL-70 INFORME GE-35, 25P., MAPS 1:1,000; 1:200.
LYONS, W., 1957, GEOLOGIA Y RESULTADOS DE LAS PERFORACIONES EN COBRIZOS: DEPARTAMENTO NACIONAL DE GEOLOGIA, UNPUBLISHED REPORT
GEOLOGICAL INVESTIGATIONS BY GEOBOL (1971)
REPORT TO COMIBOL BY KERSEN AND LYON IN 1957; 5 HOLES DRILLED
REPORT TO COMIBOL BY J. FUENTES IN 1967
CIMRI
GEOBOL (1971)
| Subject category | Comment text |
|---|---|
| Deposit | MAIN ORE ZONE IS ALONG A FAULT ZONE WITH VEINLETS IN N7W TO N8E 61 TO 71E SANDSTONE. BEDDED AND VEINLET MINERALIZATION IN TRAVERTIVE. MINERALIZATION IN SANDSTONE CONSISTS OF VEINLETS OF CHALCOCITE, COVELLITE, CUPRITE, MALACHITE, AND AZURITE ALONG FRACTURES WHICH FOLLOW OR CUT STRATIFICATION, ACCOMPANIED BY VEINLETS OF GYPSUM AND TRAVERTINE. NATIVE CU AND AG ARE IRREGULARLY DISTRIBUTED ALONG FRACTURES OR FINELY LAMINATED ALONG BEDDING PLANES. IN PLACES THE SANDSTONE IS CEMENTED BY CALCITE-AZURITE OR FE OXIDES AND CUT BY CALCITE VEINLETS. CU CARBONATE MINERALIZATION IN MINCHIN LIMESTONE IS CONFINED TO BEDS OF TRAVERTINE. |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 01-MAY-1990 | Long, Keith R. | U.S. Geological Survey |
Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.