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El Boquete Del Ramo Prospects

Occurrence in Guanacaste, Costa Rica with commodities Iron, Manganese
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Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Commodities
  6. Alteration
  7. Mineral occurrence model information
  8. Nearby scientific data
  9. Geologic structures
  10. Ore body information
  11. Economic information about the deposit and operations
  12. Mining district
  13. Links to other databases
  14. Bibliographic references
  15. General comments
  16. Reporter information

Geologic information

Identification information

Deposit ID 10090444
MRDS ID CS00017
Record type Site
Current site name El Boquete Del Ramo Prospects
Alternate or previous names Justo Perez Prospects

Geographic coordinates

Geographic coordinates: -85.65968, 10.508 (WGS84)

Site location context

Political divisions (FIPS codes)

Guanacaste(province)

Costa Rica(country)

North America(continent)

Land(continent)

Geographic areas

Country State
Costa Rica Guanacaste

Comments on the location information

  • ACCORDING TO SEARS (1919), THERE ARE TWO PROSPECTS ABOUT 150 M APART ON A LINE TRENDING N 10 W, ON THE SIDE OF AN EASTWARD-SLOPING HILL, WEST OF THE ROAD BETWEEN SARDINAL AND SAN BLAS, ABOUT 1.5 KM S OF SARDINAL, NEAR THE HOUSE OF JUSTO PERRI. THE DEPOSIT NEAREST THE HOUSE IS EXPOSED IN A SMALL CUT AT THE BASE OF THE HILL, ON THE N BANK OF A DRY GULLY. THE OTHER PROSPECT CONSISTS OF FLOAT S OF THE CUT.

Commodities

Commodity Importance
Iron Primary
Manganese Critical Primary

Comments on the commodity information

  • ROBERTS (1944) STATES THAT ORE IS MANGANIFEROUS FE OXIDES, POSSIBLY DERIVED FROM THE OXIDATION OF PYRITE

Alteration

  • (Local) Igneous Rock Is Altered.

Analytical data

Result AVERAGE GRADE: 30 % FE
Result 1.5-4 % MN
Result 30 % SILICA

Mineral occurrence model information

Model code 97
USGS model code 24c
Deposit model name Volcanogenic Mn

Nearby scientific data

(1) -85.65968, 10.508
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Economic information

Geologic structures

Type of structure Local
Structure description Both Orebodies Are Sheared Along Their Walls.

Ore body information

  • General form LENTICULAR

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Sardinal District

Comments on the reserve resource information

  • SEARS (1919) STATES THAT THE CUT HAS A VERY SMALL AMOUNT OF MATERIAL, AND THAT THE EXPOSURE OF FLOAT BOULDERS HAS SOME BOULDERS WEIGHING OVER HALF A TON, WITH A TOTAL OF SEVERAL HUNDRED TONS OF ORE IN SIGHT. ROBERTS (1944) CLAIMS THAT THE PROSPECTS HAVE NO COMMERCIAL VALUE.

Comments on the workings information

  • SHALLOW CUTS AND A PIT 3 M DEEP.

Reference information

Bibliographic references

  • Deposit

    SEARS, J. D., 1919, DEPOSITS OF MANGANESE ORE IN COSTA RICA: U.S. GEOL. SURV. BULL. 710-C, P. 77-78.

  • Deposit

    ROBERTS, R. J., 1944, MANGANESE DEPOSITS IN COSTA RICA: U.S. GEOL. SURV. BULL. 935-H, P. 410-411.

  • Deposit

    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.

General comments

Subject category Comment text
Deposit ACCORDING TO SEARS (1919), THE ORE AT THE SMALL CUT IS IN A SMALL POCKET AND THE MATERIAL AT THE OTHER EXPOSURE CONSISTS OF FLOAT BOULDERS SCATTERED OVER A ZONE 12-15 M WIDE AND 45 M HIGH ALONG THE SLOPE OF THE HILL. ROBERTS (1944) STATES THAT BOTH OREBODIES ARE LENTICULAR; ONE IS 7.6 M LONG AND 3 M WIDE, THE OTHER IS 10.7 M LONG AND 4.6 M WIDE. OXIDES REPLACE ALTERED IGNEOUS ROCK.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAR-1986 Howe, Stephen S. U.S. Geological Survey

Beyond USGS

Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.

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