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Portland Ridge Caves

Past Producer in Clarendon, Jamaica with commodities Nitrogen-Nitrates, Phosphorus-Phosphates
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Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Commodities
  6. Host and associated rocks
  7. Nearby scientific data
  8. Economic information about the deposit and operations
  9. Ownership information
  10. Links to other databases
  11. Bibliographic references
  12. General comments
  13. Reporter information

Geologic information

Identification information

Deposit ID 10063469
MRDS ID TC37296
Record type Site
Current site name Portland Ridge Caves

Geographic coordinates

Geographic coordinates: -77.14057, 17.74153 (WGS84)
Location accuracy 10000(meters)

Site location context

Political divisions (FIPS codes)

Clarendon(province)

Jamaica(country)

North America(continent)

Land(continent)

Geographic areas

Country State
Jamaica Clarendon

Commodities

Commodity Importance
Nitrogen-Nitrates Primary
Phosphorus-Phosphates Primary

Comments on the commodity information

  • FERTILIZER

Analytical data

Result UPPER RED LAYER: 25% P2O5, 21% CITRATE INSOLUBLE
Result CREAM-COLORED, 31% P2O5, 11% CITRATE INSOLUBLE, 0.07 TO 6.65% N2.

Host and associated rocks

  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Limestone
    Rock unit name Yellow And White Limestone Formation
    Rock description Yellow And White Limestone Formation
    Stratigraphic age (youngest) Eocene
    Stratigraphic age (youngest) Eocene

Nearby scientific data

(1) -77.14057, 17.74153
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Economic information

Comments on the geologic information

  • CAVES IN KARST LIMESTONE TERRANES; UPPER LAYER DARK BROWN FRIABLE RECENT GUANO; NEXT YELLOWISH-REDDISH BROWN MATERIAL ENCRUSTED WITH TRAVERTINE; LOWER LAYER, GRAY-CREAM COLORED FRIABLE PHOSPHATE WHICH GRADES INTO LIMESTONE; PHOSPHATE CONTENT INCREASES WITH DEPTH.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Non-metallic
Significant No
Year of first production 1944

Ownership information

  • Type Operator
    Owner Excella Products Co.
    First year 1944
    Last year 1950

Comments on the production information

  • UP TO 1949 PRODUCED 100 TONS PER YEAR, THEREAFTER PRODUCTION INCREASED.

Comments on the reserve resource information

  • NO RESERVES LISTED IN HUGHES (1973).

Reference information

Bibliographic references

  • Deposit

    ZANS, V.A., 1951, ECONOMIC GEOLOGY AND MINERAL RESOURCES OF JAMAICA: GEOLOGICAL SURVEY DEPARTMENT, JAMAICA, B.W.I., BULLETIN NO. 1, 61 P.

  • Deposit

    HUGHES, I.G., 1973, THE MINERAL RESOURCES OF JAMAICA: GEOLOGICAL SURVEY DEPARTMENT OF JAMAICA BULLETIN NO. 8, 87 P.

  • Other Database

    CIMRI

General comments

Subject category Comment text
Deposit 4 ADJOINING CAVES.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-DEC-1992 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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