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

Las Mercedes

Occurrence in Barahona, Dominican Republic with commodity Aluminum
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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. Nearby scientific data
  9. Economic information about the deposit and operations
  10. Reserves and resources
  11. Links to other databases
  12. Bibliographic references
  13. General comments
  14. Reporter information

Geologic information

Identification information

Deposit ID 10062404
MRDS ID TC35801
Record type Site
Current site name Las Mercedes
Alternate or previous names Bucan Polo Deposit, Cabo Rojo

Geographic coordinates

Geographic coordinates: -71.63738, 18.07707 (WGS84)
Elevation 381
Location accuracy 10000(meters)
Relative position ABOUT 7 MI NE OF PEDERNALES, Acc 3 Min, Acc 3 Min

Site location context

Political divisions (FIPS codes)

Barahona(province)

Dominican Republic(country)

North America(continent)

Land(continent)

Geographic areas

Country State
Dominican Republic Barahona

Comments on the location information

  • ON SW SLOPE OF SIERRA BAHORNUCO

Commodities

Commodity Importance
Aluminum Critical Primary

Materials information

Materials Type of material
Bauxite Ore
Boehmite Ore
Gibbsite Ore
Goethite Ore
Hematite Ore
Kaolinite Ore
Ilmenite Gangue
Magnetite Gangue
Quartz Gangue
Zircon Gangue

Analytical data

Result AL203 RANGES (5 SAMPLES) 41-44.5%, SIO2 8.5-12.5%, FEO3 19.4-20.4%, MNO2 0.6-1.1%, P2O5 1.8-2.4%, TIO2 2.2-2.4%.

Mineral occurrence model information

Model code 112
USGS model code 38c
Deposit model name Bauxite, karst type

Nearby scientific data

(1) -71.63738, 18.07707
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Economic information

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Significant No
Discovery year 1942
Discoverer Alcoa Mining Co.
Year of first production 1959

Comments on the production information

  • ABOUT 250,000 TONNES PER YEAR PRODUCED (1980).

Reserves and resources

  • Type In-situ
    Estimate year 1944
    Total resources 1116000mt ore
    Commodity Subtype Grade units Group Importance Year
    Aluminum Al2O3 30.8 wt-pct Aluminum Major 1944

Comments on the reserve resource information

  • CALCULATED ON A DRY BASIS USING 27 CUBIC FEET OF SOIL PER LONG TON.

Reference information

Bibliographic references

  • Deposit

    GOLDICH, S.S., AND BERGQUIST, H.R., 1947, ALUMINOUS LATERITIC SOIL OF THE SIERRA DE BAHORUCO AREA, DOMINICAN REPUBLIC, W.I.: U.S. GEOLOGICAL SURVEY BULLETIN 953-C, P. 53-84.

  • Deposit

    ALCOA EXPLORATION COMPANY, 1980, FIELD TRIP A, CABO ROJO-BAUXITE DEPOSITS: FIELD GUIDE, 9TH CARIBBEAN GEOLOGICAL CONFERENCE SANTO DOMINGO, DOMINICAN REPUBLIC P. 33-49.

  • Other Database

    CIMRI

  • Production

    ALCOA (1980).

  • Reserve-Resource

    GOLDICH AND BERGQUIST (1947).

General comments

Subject category Comment text
Deposit UNDERLAIN BY LIMESTONE WITH LARGE SINK HOLES; SOIL COVERS A WAVE CUT TERRACE; ON A N20E DIRECTION, LENGTH IS 1600 FT; ON NW-SE IS 3,600 FT WIDE; ABOUT 200 ACRES OF SOIL, AVERAGE THICKNESS 10 FT.
Deposit INFERRED COMPOSITION OF PROTOLITH IS VOLCANIC ASH OR PYROCLASTIC MATERIAL OF ANDESITIC TO BASALTIC COMPOSITION.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JAN-93 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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