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Los Limones Prospect

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. Mineral occurrence model information
  7. Host and associated rocks
  8. Nearby scientific data
  9. Ore body information
  10. Economic information about the deposit and operations
  11. Mining district
  12. Ownership information
  13. Workings at the site
  14. Links to other databases
  15. Bibliographic references
  16. General comments
  17. Reporter information

Geologic information

Identification information

Deposit ID 10007836
MRDS ID CS00060
Record type Site
Current site name Los Limones Prospect

Geographic coordinates

Geographic coordinates: -85.77358, 10.3469 (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

  • 2 KM S OF HUACAS.

Commodities

Commodity Importance
Manganese Critical Primary

Mineral occurrence model information

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

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
    Stratigraphic age (youngest) Late Cretaceous
  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Shale

Nearby scientific data

(1) -85.77358, 10.3469
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Economic information

Ore body information

  • Strike N 10 W
    Dip E
    Length 60M
    Width 6M

Comments on the geologic information

  • ACCORDING TO ROBERTS (1944), THE CHERT AND SHALE ARE AT THE TOP OF THE RIDGE, STRIKE N 10 W, AND DIP STEEPLY EAST. ALTERED DIORITE IS AT THE ADIT PORTAL. DIORITE (ROBERTS (1944) OR BASALT (KUYPERS AND DENYER (1979)).

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Santa Rosa District

Ownership information

  • Type Operator
    Owner E. W. Creevy

Comments on the reserve resource information

  • THE DUMP FROM THE ADIT CONTAINS NO ORE. "A FEW TONS OF HIGH-GRADE ORE AND POSSIBLY 100 METRIC TONNES OR MORE OF LOW-GRADE ORE MAY BE AVAILABLE AT LOS LIMONES."

Workings at the site

  • Type of workings Surface/Underground
    Overall depth 8M

Comments on the workings information

  • SHALLOW CUTS; 8-M-DEEP SHAFT COLLARED NEAR THE TOP OF THE RIDGE CONNECTS TO AN ADIT DRIVEN FROM THE SLOPE BELOW.

Comments on development

  • LAST EXPLORED BY E. W. CREEVY IN 1938.

Reference information

Bibliographic references

General comments

Subject category Comment text
Deposit MANGANIFEROUS ZONE NEAR THE TOP OF A NARROW RIDGE TRACED BY FLOAT FOR ABOUT 60 M. IT CONTAINS SPARSELY DISTRIBUTED MN OXIDES. LOCALLY, POCKETS OF MEDIUM-GRADE ORE 30 - 90 CM WIDE ARE EXPOSED, BUT THEY ARE ONLY ABOUT A METER LONG. THERE ARE MN NODULE CRUSTS ABOUT 2.5 M ABOVE THE CONTACT BETWEEN RADIOLARIAN CHERT AND THE UNDERLYING BASALT.

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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