1. Mineral Resources
  2. Online Spatial Data
  3. Mineral Resource Data System (MRDS)

La Muda [23-2]

Occurrence in Puerto Rico, United States with commodities Copper, Molybdenum
Map
XML
JSON
KML
C
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. Controls for ore emplacement
  14. Economic information about the deposit and operations
  15. Links to other databases
  16. Bibliographic references
  17. General comments
  18. Reporter information

Geologic information

Identification information

Deposit ID 10085452
MRDS ID W701043
Record type Site
Current site name La Muda [23-2]

Geographic coordinates

Geographic coordinates: -66.11363, 18.33898 (WGS84)

Site location context

Political divisions (FIPS codes)

Guaynabo Municipio(county)

Puerto Rico(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Aguas Buenas(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
Molybdenum Primary

Materials information

Materials Type of material
Chalcopyrite Ore
Pyrite Gangue

Alteration

  • (Local) Quartz-K-Feldspar-Sericite

Analytical data

Result BEST CORE SAMPLE = 0.18% CU, 0.28% MO

Mineral occurrence model information

Model code 53
USGS model code 17
Deposit model name Porphyry Cu
Mark3 model number 4

Host and associated rocks

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

Nearby scientific data

(1) -66.11363, 18.33898
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description North 50 West

Ore body information

  • General form ELONGATE
    Length 304.8M
    Width 60.96M
    Depth to top 0M
    Depth to bottom 60.96M

Controls for ore emplacement

  • Follows The La Muda Fault Near A Small Intrusion

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1967
Discoverer A.D.Fraser

Comments on the reserve resource information

  • POTENTIAL FOR PORPHYRY COPPER IS LIMITED.

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

    BERGEY, W.R., 1967, GUAYNABO (LA MUDA) FINAL REPORT: A.D. FRASER PRIVATE REPORT ON FILE AT THE DEPARTMENT OF NATURAL RESOURCES, PUERTO RICO.

General comments

Subject category Comment text
Deposit 7 DIAMOND DRILL HOLES BY FRASER UNDER A COPPER AND MOLYBDENUM SOIL SURVEY ANOMALY. WELL PROSPECTED AND LIMITED POTENTIAL. ; 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-JUL-1990 Mckelvey, G.E. U.S. Geological Survey

Beyond USGS

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

Maps centered on this site