Cidra

Occurrence in Puerto Rico, United States with commodities Lead, Zinc, Copper, Gold
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. Controls for ore emplacement
  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 10085515
MRDS ID W701113
Record type Site
Current site name Cidra

Geographic coordinates

Geographic coordinates: -66.17057, 18.1951 (WGS84)
Relative position THE ALTERATION ZONE UNDERLIES THE CITY OF CIDRA AND THE VALLEY TO THE NORTH

Site location context

Political divisions (FIPS codes)

Cidra Municipio(county)

Puerto Rico(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Comerio(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
Lead Primary
Zinc Critical Primary
Copper Primary
Gold Secondary

Materials information

Materials Type of material
Chalcopyrite Ore
Jarosite Gangue

Alteration

  • (Local) Silcia, Sericite, Alunite

Analytical data

Result ZN = 1,400 PPMN, CU = 600 PPM, PB = 3,000 PPM IN SOILS

Mineral occurrence model information

Model code 154
USGS model code 25e
Deposit model name Epithermal quartz-alunite Au
Mark3 model number 38

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
  • Host or associated Host
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite

Nearby scientific data

(1) -66.17057, 18.1951

Economic information

Ore body information

  • General form IRREGULAR
    Length 4000M
    Width 3000M
    Depth to top 0M

Controls for ore emplacement

  • Major Fault Zones??? Traces Of Chalcopyrite Are Localized In The Intrusive Rock In Quartz Veins Adjacent And Essentially Parallel To The Basal Limestone Contact.

Comments on the geologic information

  • IN THE CIDRA AREA, ESSENTIALLY UNALTERED LIMESTONE OVERLIES A SMALL BODY OF DIORITIC PORPHYRY AND HYDROTHERMALLY ALTERED VOLCANIC ROCK. FIELD EVIDENCE INDICATES THAT THIS IS NOT AN UNCONFORMABLE CONTACT.

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1957
Discoverer Fraser

Comments on development

  • PROSPECT.

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

    SOLOMIAC, H., 1971, REPORT ON THE CAGUAS - NARARJITO CONCESSION, PUERTO RICO: PARNASSE COMPANY PRIVATE REPROT ON FILE WITH THE DEPARTMENT OF NATURAL RESOUECES, PUERTO RICO.

  • Deposit

    PEASE, M. H., 1966, SOME CHARACTERISTICS OF COPPER MINERALIZATION IN PUERTO RICO, IN CARIBBEAN GEOL. CONF., 3RD, KINGSTON, JAMAICA, 1962, TRANS.: JAMAICA GEOLOGICAL SURVEY PUB. 95, P. 110.

General comments

Subject category Comment text
Deposit MAJOR ALTERATION ZONE, POORLY PROSPECTED, LITTLE INDICATIONS OF NEAR SURFACE ECONOMIC MINERALIZATION FOR EITHER PRECIOUS METALS OR COPPER. [PREVIOUS UPDATER AND DATE: MCKELVEY, G. E., 90 07.] ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT
Deposit ALTERATION ZONE CROPS OUT UNDER THE VALLEY AND CITY OF CIDRA. EXPOSURES ARE POOR AND COVERED BY HOMES AND FARMS.

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.