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Cala Abajo Deposit

Prospect in Puerto Rico, United States with commodities Copper, 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. Materials information
  7. Alteration
  8. Mineral occurrence model information
  9. Host and associated rocks
  10. Nearby scientific data
  11. Geologic structures
  12. Economic information about the deposit and operations
  13. Ownership information
  14. Reserves and resources
  15. Links to other databases
  16. Bibliographic references
  17. General comments
  18. Reporter information

Geologic information

Identification information

Deposit ID 10085482
MRDS ID W701073
Record type Site
Current site name Cala Abajo Deposit

Geographic coordinates

Geographic coordinates: -66.68003, 18.18955 (WGS84)

Site location context

Political divisions (FIPS codes)

Utuado Municipio(county)

Puerto Rico(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Adjuntas(quadrangle 1:24,000 scale)

Puerto Rico C(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

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

Materials information

Materials Type of material
Chalcopyrite Ore
Gypsum Gangue
Pyrite Gangue

Alteration

  • (Local) Extensive Propylitic And Sericitic; Localized Argillic, With Plagioclase Albitized Or, More Commonly, Completely Destroyed

Mineral occurrence model information

Model code 78
USGS model code 20c
Deposit model name Porphyry Cu-Au
Mark3 model number 34

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
    Stratigraphic age (youngest) Eocene
    Stratigraphic age (youngest) Eocene
  • Host or associated Host
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite

Nearby scientific data

(1) -66.68003, 18.18955
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Deposit Is Cut By The Major Fault
Type of structure Local
Structure description Strong Fracturing Of Deposit Has Provided Channelways For Intense Leaching, Supergene Argillization, And Secondary Chalcocite Deposition

Comments on the geologic information

  • STOCK LIES SOUTH OF THE UTUADO BATHOLITH IN A NORTHWEST TRENDING ZONE OF HYDROTHERMALLY ALTERED CRETACEOUS AND EOCENE VOLCANICS. A MAJOR FAULT WITHIN THE ALTERATION ZONE SEPARATES THE EOCENE AND CRETACEOUS ROCKS.

Economic information about the deposit and operations

Development status Prospect
Commodity type Metallic
Deposit size Medium
Significant No

Ownership information

  • Type Operator
    Owner USMX, Inc.
    Interest 65

Reserves and resources

  • Type In-situ
    Estimate year 1994
    Commodity Subtype Grade units Group Importance Year
    Copper Cu 0.857 wt-pct Copper Major 1994
    Gold Au 0.4223 g/mt Gold Major 1994

Comments on the reserve resource information

  • THE CALA ABAJO DEPOSIT AND THE PIEDRA HUECA DEPOSIT (600 METERS AWAY) TOGETHER CONTAIN 104 MILLION TONS OF ORE AVERAGING 0.82% COPPER (BRADLEY, 1971).

Reference information

Bibliographic references

General comments

Subject category Comment text
Deposit [PREVIOUS UPDATER AND DATE: BAWIEC, WALTER J., 90 08.]
Deposit DEPOSIT IS HIGHLY FRACTURED AND TUBULAR-SHAPED (1,200 X 200 METERS).

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JAN-1990 Paidakovich, Matthew E. U.S. Geological Survey
Updater 01-SEP-1991 Paidakovich, Matthew E. U.S. Geological Survey
Updater 01-NOV-1994 Page, Norman J. U.S. Geological Survey

Beyond USGS

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

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