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El Pital Prospect

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

Geologic information

Identification information

Deposit ID 10007858
MRDS ID CS00090
Record type Site
Current site name El Pital Prospect

Geographic coordinates

Geographic coordinates: -85.66246, 10.07886 (WGS84)
Elevation 175

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

  • 10 KM FROM THE PACIFIC OCEAN, ON THE RIO PITAL, A TRIBUTARY OF THE RIO PIEDRA AMARILLA (RENAMED RIO CUAJINIQUIL?). INCLUDES THE EL PERRO PROSPECT, 100 M E OF THE EL PITAL PROSPECT.

Commodities

Commodity Importance
Manganese Critical Primary
Iron Primary

Comments on the commodity information

  • FE OXIDES ARE ABUNDANT LOCALLY.

Materials information

Materials Type of material
Pyrolusite Ore

Alteration

  • (Local) Silicification

Analytical data

Result GRAB SAMPLE FROM ORE IN JASPER ZONE: 11.15 % MN
Result 16.94 % FE
Result 50.31 % INSOLUBLE MATTER

Mineral occurrence model information

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

Host and associated rocks

  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Mafic Volcanic Rock > Basalt

Nearby scientific data

(1) -85.66246, 10.07886
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Economic information

Geologic structures

Type of structure Local
Structure description Contacts Between Jasper And Basalt Are Commonly Sheared

Ore body information

  • General form POCKETS, VEINLETS, AND DISSEMINATIONS
    Length 100M
    Width 30M

Comments on the geologic information

  • ROBERTS (1944) SUGGESTS THAT THE JASPER FORMED BY REPLACEMENT OF THE BASALT ALONG STEEPLY DIPPING OR VERTICAL FAULT ZONES.

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Rio Piedra Amarilla-Rio Guajiniquil District

Ownership information

  • Type Operator
    Owner E. W. Creevy

Comments on the reserve resource information

  • THIN COATINGS OF NEARLY PURE PYROLUSITE OR OTHER MN OXIDES ON JASPER OUTCROPS GIVE EXAGGERATED IDEA OF AVAILABLE TONNAGE. ONE OREBODY IS 12 M LONG AND AT LEAST 6 M WIDE, BUT ORE IS APPARENTLY TOO SILICEOUS TO SHIP. "CAREFUL MINING AND SORTING MIGHT PRODUCE A FEW TONS OF SHIPPING ORE FROM EL PITAL AND EL PERRO TOGETHER, BUT THERE APPEARS TO BE NO HOPE OF FINDING LARGE HIGH-GRADE ORE BODIES."

Comments on the workings information

  • SHALLOW TRENCHES.

Comments on development

  • EXPLORATION SAID TO HAVE INCLUDED SOME CORE DRILLING AT BOTH EL PITAL AND EL PERRO. LAST WORK DONE IN 1938.

Reference information

Bibliographic references

General comments

Subject category Comment text
Deposit N-TRENDING ZONE OF MANGANIFEROUS JASPER IN BASALT. SMALL AND IRREGULAR OREBODIES (ONE IS 12 M LONG AND AT LEAST 6 M WIDE) OF MN OXIDE COMMONLY CANNOT BE TRACED FROM TRENCH TO TRENCH. MN OXIDES IN POCKETS, SMALL VEINLETS, AND DISSEMINATED IN JASPER. SOME OUTCROPS OF JASPER ARE THINLY COATED WITH NEARLY PURE PYROLUSITE. THIN, RICH PYROLUSITE COATINGS ARE ALSO FOUND AT EL PERRO.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAR-1986 Howe, Stephen S. U.S. Geological Survey PARSED HOST ROCK AND ASSOCIATED ROCK INFORMATION FROM OLD SINGLE VALUED FIELD TO NEW MULTIVALUED FIELD
Editor 27-APR-1995 Mosier, Dan U.S. Geological Survey

Beyond USGS

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

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