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Deposit No. 5

Occurrence in Puerto Rico, United States with commodity Iron
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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 10085522
MRDS ID W701125
Record type Site
Current site name Deposit No. 5

Geographic coordinates

Geographic coordinates: -65.82862, 18.20538 (WGS84)
Relative position 9/10 MILE SOUTH OF TORRES AND ABOUT THE SAME DISTANCE NORTH OF DEPOSIT NO. 4. THE OUTCROP, NOT VERY CONSPICUOUS, AND TRACEABLE ONLY FOR ABOUT 50 FEET, OCCURS ON THE NORTH SIDE OF A RIDGE JUST BELOW ITS CREST, WHICH RISES 410 FEET ABOVE THE GURABO VALLEY.

Site location context

Political divisions (FIPS codes)

Las Piedras Municipio(county)

Puerto Rico(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Humacao(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)

Geographic areas

Country State
United States Puerto Rico

Commodities

Commodity Importance
Iron Primary

Materials information

Materials Type of material
Magnetite Ore
Augite Gangue
Calcite Gangue
Plagioclase Gangue
Quartz Gangue

Mineral occurrence model information

Model code 62
USGS model code 18d
Deposit model name Skarn Fe

Host and associated rocks

  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Dacite
    Stratigraphic age (youngest) Early Cretaceous
  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Latite
  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite
  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Limestone

Nearby scientific data

(1) -65.82862, 18.20538
ListMap

Economic information

Comments on the geologic information

  • THE LIMESTONE IS OVERLAIN BY AUGITE ANDESITE; FIELD RELATIONS INDICATE THAT THE STRIKE OF THE CONTACT OF THE TWO IS N 48 W AND THE DIP 52 SW, MAKING IT APPEAR THAT A SYNCLINE OCCURS BETWEEN DEPOSIT NO. 5 AND DEPOSIT NO.4 AND THAT THE LIMESTONE AT DEPOSIT NO. 5 MAY BE THE SAME BED WITH WHICH DEPOSITS NO. 1 THROUGH 4 ARE ASSOCIATED. THE DEPOSIT LIES 1 1/3 MILES NORTHEAST OF THE SAN LORENZO BATHOLITH CONTACT AND 1 2/3 MILES SOUTHEAST OF THE LUQUILLO STOCK.

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Humacao District

Comments on development

  • MINERAL OCCURRENCE

Reference information

Bibliographic references

  • Deposit

    COX, DENNIS P., AND BRIGGS, REGINALD P., 1973, METALLOGENIC MAP OF PUERTO RICO: U.S. GEOLOGICAL SURVEY, MISCELLANEOUS GEOLOGIC INVESTIGATIONS MAP I-721, ACCOMPANIED BY EXPLANATORY PAMPHLET, 6 P.

  • Deposit

    FETTKE, C. R., 1924, THE GEOLOGY OF THE HUMACAO DISTRICT, PORTO RICO: NEW YORK ACAD. SCI., SCI. SURVEY PORTO RICO AND VIRGIN ISLANDS, V. 2, PT. 2, P. 117-197.

General comments

Subject category Comment text
Deposit [PREVIOUS UPDATER AND DATE: BAWIEC, WALTER J., 90 08.]

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JAN-1990 Paidakovich, Matthew E. U.S. Geological Survey
Updater 01-OCT-1991 Paidakovich, Matthew E. U.S. Geological Survey

Beyond USGS

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

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