| Deposit ID | 10111396 |
|---|---|
| MRDS ID | CS00257 |
| Record type | Site |
| Current site name | San Isidro Prospect |
| Alternate or previous names | San Isidro De El General |
| Geographic coordinates: | -83.67769, 9.39418 (WGS84) |
|---|
Political divisions (FIPS codes)
San Jose(province)
Costa Rica(country)
North America(continent)
Land(continent)
| Country | State |
|---|---|
| Costa Rica | San Jose |
| Commodity | Importance |
|---|---|
| Aluminum Critical | Primary |
| Materials | Type of material |
|---|---|
| Gibbsite | Ore |
| Result | 35-40 % ALUMINA |
|---|---|
| Result | 6-7 % SILICA |
| Model code | 111 |
|---|---|
| USGS model code | 38b |
| Deposit model name | Bauxite, laterite type |
| (1) | -83.67769, 9.39418 |
|---|
| General form | BLANKET |
|---|---|
| Thickness | 7M |
| Development status | Occurrence |
|---|---|
| Commodity type | Metallic |
| Significant | No |
| Discovery year | 1956 |
| Discoverer | Aluminum Co. Of America |
| District name | Rio General Area |
|---|
| Type | Owner |
|---|---|
| Owner | Codesa |
| Type | In-situ | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Estimate year | 1963 | ||||||||||||||
| Total resources | 1524000mt ore | ||||||||||||||
| |||||||||||||||
| Type | In-situ | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Estimate year | 1969 | ||||||||||||||
| Total resources | 15000000mt ore | ||||||||||||||
| |||||||||||||||
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| USGS | Mineral Resources Data System | MRDS | CS00257 |
ANDERSON, S. M., 1963, THE MINERAL INDUSTRY OF COSTA RICA: MINERALS YEARBOOK 1963, V. 4, P. 70.
NOE, F. E., 1964, THE MINERAL INDUSTRY OF CENTRAL AMERICAN AREAS; COSTA RICA: MINERALS YEARBOOK 1964, V. 4, P. 71.
THEOFILOS, N. G., 1976, THE MINERAL INDUSTRY OF CENTRAL AMERICAN COUNTRIES; COSTA RICA: MINERALS YEARBOOK 1976, V. 3, P. 1308.
VELASCO, PABLO, 1980, THE MINERAL INDUSTRY OF CENTRAL AMERICAN COUNTRIES; COSTA RICA: MINERALS YEARBOOK 1980, V. 3, P. 1236.
U.S. GEOLOGICAL SURVEY, DIRECCION GENERAL DE GEOLOGIA, MINAS E HIDROCARBUROS, UNIVERSIDAD DE COSTA RICA, 1987, MINERAL RESOURCE ASSESSMENT OF THE REPUBLIC OF COSTA RICA: U.S. GEOLOGICAL SURVEY MISCELLANEOUS INVESTIGATION SERIES MAP I-1865, 75 P.
| Subject category | Comment text |
|---|---|
| Deposit | BAUXITIC LATERITE IN BEDS AVERAGING 2-2.5 M THICK OVER AN AREA OF 250 SQUARE KM. ACCORDING TO PATTERSON AND OTHERS (1986), THE LATERITE "...FORMED IN WEATHERED VOLCANIC AND SEDIMENTARY ROCKS OF TERTIARY AGE AND IN PLIOCENE AND PLEISTOCENE TERRACE GRAVELS CONSISTING OF TRANSPORTED VOLCANIC AND IGNEOUS MATERIALS." |
| Deposit | THE ALUMINUM CO. OF AMERICA FORMALLY WITHDREW ON NOV. 12, 1976 FROM ITS AGREEMENT WITH THE COSTA RICAN GOVERNMENT TO DEVELOP THE BAUXITE DEPOSITS IN THE RIO GENERAL AREA DUE TO MARGINAL ECONOMIC FEASIBILITY. THE INTEREST IN SAN ISIDRO PASSED TO THE REYNOLDS ALUMINUM CO. IN 1979, BUT WAS LATER TAKEN OVER BY CODESA. THREE OTHER REFERENCES ARE: ORGANIZACION DE LOS ESTADOS AMERICANOS, 1978, DIAGNOSTICO DEL SECTOR MINERO: SAN JOSE, ORGANIZACION DE LOS ESTADOS AMERICANOS, 91. P.; PATTERSON, S. H., KURTZ, H. F., OLSON, J. C., AND NEELEY, C. L., 1986, GEOLOGY AND RESOURCES OF ALUMINUM; WORLD BAUXITE RESOURCES: U.S. GEOLOGICAL SURVEY PROFFESSIONAL PAPER 1076-B.; SANDOVAL M., FELIPE, 1969, MINING POTENTIAL IN COSTA RICA: COSTA RICA, DIRECCION DEL GEOLOGIA, MINAS Y PETROLEO, INFORMES TECNICOS Y NOTAS GEOLOGICAS, ANO 8, NO. 32, 9 P. ; INFO.SRC : 1 PUB LIT |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 01-MAR-1986 | Howe, Stephen S. | U.S. Geological Survey |
Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.