Rio Hondo [35-1]

Occurrence in Puerto Rico, United States with commodities Copper, Gold, Silver
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. Ore body information
  12. Economic information about the deposit and operations
  13. Ownership information
  14. Links to other databases
  15. Bibliographic references
  16. General comments
  17. Reporter information

Geologic information

Identification information

Deposit ID 10096715
MRDS ID W701101
Record type Site
Current site name Rio Hondo [35-1]
Alternate or previous names Antonio, Alto

Geographic coordinates

Geographic coordinates: -66.27307, 18.22122 (WGS84)

Site location context

Political divisions (FIPS codes)

Barranquitas Municipio(county)

Puerto Rico(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Barranquitas(quadrangle 1:24,000 scale)

Puerto Rico C(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
Copper Primary
Gold Primary
Silver Primary

Materials information

Materials Type of material
Chalcocite Ore
Chalcopyrite Ore
Magnetite Unknown

Alteration

  • (Local) Garnet, Epidote, Chlorite

Mineral occurrence model information

Model code 59
USGS model code 18b
Deposit model name Skarn Cu
Mark3 model number 8

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Ultramafic Intrusive Rock > Hornblendite
    Stratigraphic age (youngest) Late Cretaceous
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic)

Nearby scientific data

(1) -66.27307, 18.22122

Economic information

Ore body information

  • General form 5 SEPARATE ZONES OF ALTERATION AND WEAK MINERALIZATION

Comments on the geologic information

  • OCCURRENCE IS NEAR AND IN THE RIO MATON LIMESTONE MEMBER OF THE ROBLES FORMATION AND THE LIMESTONE UNIT OF FORMATION L AS WELL AS IN MODERATELY SHEARED AND LOCALLY CHLORITIZED LAVA AND FLOW BRECCIA OF PRE-ROBLES ROCKS AND FORMATION L.

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1958
Discoverer Fraser

Ownership information

  • Type Owner
    Owner Fraser, A. D.

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

    HAWLEY, R.G., 1958, REPORT ON THE RIO HONDO AREA, CENTRAL CONCESSION, PUERTO RICO: A.D. FRASER PRIVATE REPORT ON FILE AT THE DEPARTMENT OF NATURAL RESOURCES, PUERTO RICO.

  • Deposit

    BRIGGS, R. P., AND GELABERT, P. A., 1962, PRELIMINARY REPORT OF THE GEOLOGY OF THE BARRANQUITAS QUADRANGLE, PUERTO RICO: U. S. GEOLOGICAL SURVEY MISC. GEOL. INV. MAP I-336, SHEET 2.

General comments

Subject category Comment text
Deposit SKARN MINERALIZATION IN CARBONATE BEARING UNITS WITHIN A VOLCANIC ANDESITE SECTION. DRILLED BY SEVERAL COMPANIES FINDING ONLY TRACES OF COPPER AND GOLD. [PREVIOUS UPDATER AND DATE: MCKELVEY, G. E., 90 07.] ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT

Reporter information

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

Beyond USGS

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