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Unnamed Occurrence

Occurrence in Guanacaste, Costa Rica with commodity 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. Materials information
  7. Mineral occurrence model information
  8. Host and associated rocks
  9. Nearby scientific data
  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 10090462
MRDS ID CS00096
Record type Site
Current site name Unnamed Occurrence
Alternate or previous names Probably the Cuajiniquil Occurrence of Kuypers and Denyer 1979.

Geographic coordinates

Geographic coordinates: -85.75274, 10.05386 (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

  • ON THE BEACH, JUST N OF THE MOUTH OF THE RIO GUAJINIQUIL (ALSO SPELLED RIO CUAJINIQUIL).

Commodities

Commodity Importance
Manganese Critical Primary

Materials information

Materials Type of material
Psilomelane Ore

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 Sedimentary Rock > Clastic Sedimentary Rock > Shale

Nearby scientific data

(1) -85.75274, 10.05386
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Economic information

Ore body information

  • General form LENTICULAR
    Strike NW
    Dip SW, STEEP
    Width 6M

Comments on the geologic information

  • ACCORDING TO ROBERTS (1944), THE JASPER GRADES INTO UNALTERED SHALE ALONG STRIKE AND THE SHALE IS BOUNDED ON BOTH SIDES BY BASALT. KUYPERS AND DENYER (1979) CLAIM THAT THE HOST ROCK IS BASALT AND THAT SMALL DIAMETER JASPER PIPES, GENERALLY NOT MANGANIFEROUS, CROSSCUT THE BASALT WITH WELL-DEFINED BOUNDARIES.

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

Comments on the reserve resource information

  • NO COMMERCIAL IMPORTANCE.

Reference information

Bibliographic references

General comments

Subject category Comment text
Deposit RED AND YELLOW JASPER ZONE ABOUT 6 M WIDE CROPS OUT ON THE BEACH AND CONTAINS MN OXIDES. THE ORE IS GENERALLY LOW GRADE EXCEPT FOR A LENS OF PSILOMELANE 1 M LONG AND UP TO 30 CM WIDE.

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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