Punta Gorda Prospect

Occurrence in Guanacaste, Costa Rica with commodities Iron, Copper, Zinc, Cobalt
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. Links to other databases
  15. Bibliographic references
  16. General comments
  17. Reporter information

Geologic information

Identification information

Deposit ID 10007883
MRDS ID CS00117
Record type Site
Current site name Punta Gorda Prospect
Alternate or previous names Matapalo Prospect

Geographic coordinates

Geographic coordinates: -85.75274, 10.52189 (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

  • S OF PLAYA MATAPALO, ALONG QUEBRADA LA MINA.

Commodities

Commodity Importance
Iron Primary
Copper Primary
Zinc Critical Primary
Cobalt Critical Primary

Comments on the commodity information

  • N. J PAGE (ORAL COMMUN., 1986) INDICATES THAT SAMPLING PROCEDURE APPEARED TO BE RATHER SELECTIVE.

Materials information

Materials Type of material
Chalcopyrite Ore
Pyrite Ore
Pyrrhotite Ore
Goethite Gangue
Hematite Gangue
Jarosite Gangue
Limonite Gangue

Alteration

  • (Local) Abundant Fe Oxides In The Oxidized Zone

Analytical data

Result 51 % FE
Result 36 % S. FOR 25 SAMPLES OF SULFIDE ORE, GRADES ARE 0.53-5.48 % CU, 100-950 PPM ZN, 62-330 PPM CO
Result FOR TWO SAMPLES OF LIMONITIZED SEDIMENTARY ROCK, GRADES ARE 0.30-0.51 % CU, 1350-2300 PPM ZN, 40-44 PPM CO
Result AVERAGE GRADES OF TEN SAMPLES (IT IS UNCLEAR WHICH SAMPLES THESE ARE) ARE 0.96-2.84 % CU, 265-776 PPM ZN, 136-220 PPM CO.

Mineral occurrence model information

Model code 90
USGS model code 24a
Deposit model name Massive sulfide, Cyprus
Mark3 model number 11

Host and associated rocks

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

Nearby scientific data

(1) -85.75274, 10.52189

Economic information

Geologic structures

Type of structure Local
Structure description Sub-Vertical Faults

Ore body information

  • General form TABULAR TO LENTICULAR
    Strike N 60 E
    Dip 80 NW
    Thickness 2M
    Length 4.5M
    Width 3.5M

Comments on the geologic information

  • BELOW THE BRASILITO SUBCOMPLEX OF THE NICOYA OPHIOLITE COMPLEX. ZONE OF MINERALIZATION MAY BE RELATED TO CU MINERALIZATION REPORTED AT PLAYA MANZANILLO, ABOUT 3.5 KM TO THE NW.

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Small
Significant No

Reference information

Bibliographic references

General comments

Subject category Comment text
Deposit THE MINERALIZED ZONE IS AT THE CONTACT BETWEEN BASALT AND SILICEOUS SEDIMENTARY ROCKS. IT IS APPARENTLY LIMITED BY BUT NOT DIRECTLY RELATED TO SUB-VERTICAL FAULTS. THE SULFIDE ZONE LIES BENEATH AN E-TRENDING GOSSAN THAT IS UP TO EITHER 15 M OR 170 M LONG (DEPENDING ON SOURCE) AND 12 M THICK.
Deposit THIS SITE WAS VISITED BY USGS SCIENTISTS IN 1986. ; INFO.SRC : 1 PUB LIT

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.