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  3. Mineral Resource Data System (MRDS)

Los Chanchos Mine

Past Producer 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. Economic information about the deposit and operations
  11. Mining district
  12. Links to other databases
  13. Bibliographic references
  14. General comments
  15. Reporter information

Geologic information

Identification information

Deposit ID 10007857
MRDS ID CS00089
Record type Site
Current site name Los Chanchos Mine

Geographic coordinates

Geographic coordinates: -85.71107, 10.08025 (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

  • 5 KM FROM THE PACIFIC OCEAN, ON THE RIDGE BETWEEN RIO CHANCHOS AND RIO GUAJINIQUIL (ALSO SPELLED RIO CUAJINIQUIL).

Commodities

Commodity Importance
Manganese Critical Primary

Materials information

Materials Type of material
Braunite Ore
Pyrolusite Ore
Wad Ore

Analytical data

Result GRAB SAMPLE FROM PITS AND DUMPS: 31.60 % MN
Result 13.10 % FE
Result 30.46 % INSOLUBLE MATERIAL

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) -85.71107, 10.08025
ListMap

Economic information

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Year of last production 1937

Mining district

District name Rio Piedra Amarilla-Rio Guajiniquil District

Comments on the reserve resource information

  • "AT LEAST A HUNDRED METRIC TONNES OF SILICEOUS ORE REMAINS IN THE PITS...."

Comments on the workings information

  • TWO PITS: ONE IS 30 M LONG, 3-6 M WIDE, AND 1-2 M DEEP, AND THE OTHER, 50 M TO THE SE, IS 6 M LONG, 4.5 M WIDE, AND 4.5 M DEEP.

Comments on development

  • ORE SHIPPED IN 1937.

Reference information

Bibliographic references

General comments

Subject category Comment text
Deposit NW-TRENDING JASPER ZONE.

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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