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  3. Mineral Resource Data System (MRDS)

Luquillo Mountains Gold Placers

Occurrence in Puerto Rico, United States with commodity Gold
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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. Controls for ore emplacement
  11. Economic information about the deposit and operations
  12. Links to other databases
  13. Bibliographic references
  14. General comments
  15. Reporter information

Geologic information

Identification information

Deposit ID 10094912
MRDS ID GEM1120
Record type Site
Current site name Luquillo Mountains Gold Placers
Alternate or previous names Fajardo, Lequillo, Mameyes, Rio Grande, Sabana River

Geographic coordinates

Geographic coordinates: -65.74945, 18.25066 (WGS84)

Site location context

Political divisions (FIPS codes)

Naguabo Municipio(county)

Puerto Rico(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Fajardo(quadrangle 1:24,000 scale)

Puerto Rico(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Eastern(hydrologic unit)

Puerto Rico(hydrologic accounting unit)

Puerto Rico(hydrologic subregion)

Caribbean(hydrologic region)

Federal lands

El Yunque National Forest(National Forest)

National Forest FS(Type of land area)

FS(Federal land areas administered by FS)

Geographic areas

Country State
United States Puerto Rico

Comments on the location information

  • RIVERS DRAINING THE EL YUNQUE FOREST

Commodities

Commodity Importance
Gold Primary

Analytical data

Result PAST ACTIVITES

Mineral occurrence model information

Model code 119
USGS model code 39a
Deposit model name Placer Au-PGE
Mark3 model number 54

Host and associated rocks

  • Host or associated Host
    Rock type Unconsolidated Deposit > Gravel
    Stratigraphic age (youngest) Pliocene

Nearby scientific data

(1) -65.74945, 18.25066
ListMap

Economic information

Ore body information

  • General form IRRIGUAR IN SMALL / NARROW VALLEY

Controls for ore emplacement

  • Break In Slope

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Significant No
Discovery year 1650
Discoverer Spanish

Comments on development

  • PAST PRODUCTION = $ 3,880,000 AT 35 DOLLAR GOLD

Reference information

Bibliographic references

  • Deposit

    NOBLE, W.D., 1932, INVESTIGATIONS OF MINERAL RESOURCS OF PORTO RICO: MINING COMMISSION PRIVATE REPORT ON FILE AT THE DEPARTMENT OF NAUTRAL RESOURCES, PUERTO RICO.

  • Deposit

    U.S.BUREAU OF MINES, 1936, THE MINERAL RESORUCES OF PUERTO RICO: UNPUBLISHED REPORT ON FILE AT THE DEPARTMENT OF NATURAL RESOURCES, PUERTO RICO.

General comments

Subject category Comment text
Deposit Discovery Year: 1600'S
Deposit LIMITED POTENTIAL. SKARN LOAD DEPOSITS UP STREAM ; INFO.SRC : 2 UNPUB REPT

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUL-1990 Mckelvey U.S. Geological Survey

Beyond USGS

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

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