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San Marcos Island

Producer in Baja California Sur, Mexico with commodity Gypsum-Anhydrite
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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. Host and associated rocks
  9. Nearby scientific data
  10. Economic information about the deposit and operations
  11. Mining district
  12. Ownership information
  13. Links to other databases
  14. Bibliographic references
  15. General comments
  16. Reporter information

Geologic information

Identification information

Deposit ID 10048952
MRDS ID MX00139
Record type Site
Current site name San Marcos Island
Alternate or previous names Isla San Marcos

Geographic coordinates

Geographic coordinates: -112.10068, 27.21694 (WGS84)
Relative position W SHORE OF SAN MARCOS ISLAND. THE ISLAND IS APPROXIMATELY 25 MILES SOUTH OF SANTA ROSALIA, OFF THE EAST COAST OF BAJA CALIFORNIA.

Site location context

Political divisions (FIPS codes)

Baja California Sur(province)

Mexico(country)

North America(continent)

Land(continent)

Geographic areas

Country State
Mexico Baja California Sur

Commodities

Commodity Importance
Gypsum-Anhydrite Primary

Materials information

Materials Type of material
Gypsum Ore

Mineral occurrence model information

Model code 253
USGS model code 35a.5 (35ae)
Deposit model name Bedded gypsum: marine evaporite gypsum

Host and associated rocks

  • Host or associated Host
    Rock type Sedimentary Rock > Chemical Sediment > Evaporite
    Stratigraphic age (youngest) Pleistocene

Nearby scientific data

(1) -112.10068, 27.21694
ListMap

Economic information

Economic information about the deposit and operations

Development status Producer
Commodity type Non-metallic
Deposit size Large
Significant No

Mining district

District name Mulege

Ownership information

  • Type Joint Venture Owner-Op
    Owner Cia Occidental Mexicana Sa De Cv
  • Type Joint Venture Partner
    Owner Domtar Inc.
    Interest 49
  • Type Joint Venture Partner
    Owner Cia Occidental Mexicana Sa De Cv

Comments on the production information

  • THE OPERATION PRODUCES IN EXCESS OF 1.5 MILLION TONNES PER YEAR (GRIFFITHS, 1988).

Comments on the workings information

  • OPEN PIT OPERATION.

Comments on development

  • ECON.COM: THIS IS THE LARGEST GYPSUM PRODUCER IN MEXICO. MOST OF THE PRODUCTION IS EXPORTED TO THE WEST COAST OF THE U.S., JAPAN AND THE FAR EAST.

Reference information

Bibliographic references

General comments

Subject category Comment text
Deposit THIS RECORD CONTAINS DATA FROM DUPLICATE RECORD MX00606 WHICH HAS BEEN DELETED FROM MAIN MRDS.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUL-1987 Staude, John-Mark G. (Page, Norman J.) U.S. Geological Survey
Updater 01-FEB-1988 Leonard, Kenneth R. U.S. Geological Survey
Updater 01-JUN-1990 Orris, Greta J. U.S. Geological Survey
Updater 04-JAN-1995 Orris, Greta 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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