Main Pass Sulfur Mine

Producer in Plaquemines county in Louisiana, United States with commodities Sulfur, Petroleum (Oil), Halite, Limestone, Ultra Pure, Gypsum-Anhydrite
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. Ore body information
  13. Economic information about the deposit and operations
  14. Land status
  15. Ownership information
  16. Reserves and resources
  17. Links to other databases
  18. Bibliographic references
  19. General comments
  20. Reporter information

Geologic information

Identification information

Deposit ID 10023382
MRDS ID I000278
Record type Site
Current site name Main Pass Sulfur Mine
Alternate or previous names Main Pass Block 299 Mine

Geographic coordinates

Geographic coordinates: -88.77227, 29.27526 (WGS84)
Location accuracy 100(meters)
Relative position 17 MILES E OF VENICE, LA., Accurate--The Approximate Center Of The Deposit.

Site location context

Political divisions (FIPS codes)

Plaquemines(county)

Louisiana(state)

United States(country)

USGS map quadrangles

Breton Sound(quadrangle 1:250,000 scale)

Geographic areas

Country State County
United States Louisiana Plaquemines

Comments on the location information

  • DEPOSIT IS WITHIN A 4560 ACRE FEDERAL SULFUR LEASE (OCS-6 9372) AWARDED SPRING, 1988.

Commodities

Commodity Importance
Sulfur Primary
Petroleum (Oil) Primary
Halite Tertiary
Limestone, Ultra Pure Tertiary
Gypsum-Anhydrite Tertiary

Materials information

Materials Type of material
Anhydrite Ore
Halite Ore
Sulfur Ore

Alteration

  • (Local) Biogenic Alteration Of Anhydrock To Limestone

Mineral occurrence model information

Model code 255
USGS model code 35a.7 (35ag)
Deposit model name Salt-dome sulfur

Host and associated rocks

  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Limestone
    Rock unit name Louann
    Rock description Louann
    Stratigraphic age (youngest) Middle Jurassic
  • Host or associated Host
    Rock type Sedimentary Rock > Chemical Sediment > Evaporite
  • Host or associated Host
    Rock type Sedimentary Rock > Chemical Sediment > Salt

Nearby scientific data

(1) -88.77227, 29.27526

Economic information

Geologic structures

Type of structure Local
Structure description Piercement Salt Dome

Ore body information

  • Thickness 70.1M
    Depth to top 458.11M
    Depth to bottom 573.63M

Economic information about the deposit and operations

Development status Producer
Commodity type Non-metallic
Significant No
Discovery year 1988
Year of first production 1991

Land status

Ownership category National Offshore

Ownership information

  • Type Operator
    Owner Main Pass Joint Venture: Freeport-Mcmoran Resource Partners (58.33%); Imc Fertilizer Inc. (25%); Ho
  • Type Owner
    Owner U.S. Government (Minerals Management Service)

Comments on the production information

  • MAIN PASS ALSO PRODUCES OIL AT A RATE OF 21,500 BARRELS PER DAY (FEB., 1994).

Reserves and resources

  • Type In-situ
    Estimate year 1980
    Total resources 29000mt ore
    Commodity Subtype Grade units Group Importance Year
    Sulfur S 28 wt-pct Sulfur Major 1980

Comments on the workings information

  • FRASCH PRODUCTION OF SULFUR FROM 19 WELLS.

Comments on development

  • ADDITIONAL FOLLOW-UP DRILLING IS NEEDED. ; ECON.COM: MAIN PASS JV PAID $3,401,757 LEASE BONUS AND WILL PAY A 12.5% PRODUCTION ROYALTY. FREEPORT-MCMORAN RESOURCES PARTNERS, LTD., IS AN INTEGRATED FERTILISER PRODUCER, MARKETER, AND TRANSPORTER.

Reference information

Bibliographic references

  • Deposit

    ACKERMAN, J.M., 1992, MAIN PASS - FRASCH SULFUR MINE AND OIL AND GAS DEVELOPMENT, IN WESSEL, G.R., AND WIMBERLY, B.H., EDS., NATIVE SULFUR--DEVELOPMENTS IN GEOLOGY AND EXPLORATION: LITTLETON, COLO., SOCIETY OF MINING ENGINEERS, P. 73-80.

  • Deposit

    INDUSTRIAL MINERALS, 1990, ANNUAL REPORT HIGHLIGHTS: NO. 272, P. 20-21.

  • Deposit

    HARBEN, P.W., AND BATES, R.L., 1984, GEOLOGY OF THE NONMETALLICS: NEW YORK, METAL BULLETIN INC., 392 P.

  • Deposit

    INDUSTRIAL MINERALS, 1989, WORLD OF MINERALS: NO. 257, P. 21.

  • Deposit

    EDWARDS, A.F., AND OTHERS, 1992, THE GEOLOGY OF MAIN PASS SULPHUR AND OIL DEPOSIT: SOCIETY OF MINING ENGINEERS PREPRINT 92-254, 14 P.

  • Deposit

    INDUSTRIAL MINERALS, 1994, FREEPORT CLOSES CAMINADA AS MAIN PASS REACHES CAPACITY, IN WORLD OF MINERALS: NO. 317, P. 19-20.

  • Production

    INDUSTRIAL MINERALS, 1994.

General comments

Subject category Comment text
Deposit First Production Year: 1992 (S); 1991 (OIL)
Deposit THE DEPOSIT IS THE LARGEST FRASCH SULFUR RESERVE OFF THE LOUISIANNA COAST AND THE LARGEST NORTH AMERICAN FRASCH DISCOVERY IN 30 YEARS. ; INFO.SRC : 1 PUB LIT
Deposit DEPOSIT IS BELOW SEAFLOOR, OCCURS UNDER 210 FT OF WATER, IS 41-230 FT THICK, AND COVERS 1100 ACRE AREA. THE TOP OF THE DOME IS 1300 FT BELOW SEA LEVEL. THE CAPROCK COVERS 1700 AC IN AREA AND IS 130-530 FT THICK.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-OCT-90 Orris, Greta J. U.S. Geological Survey
Updater 01-MAY-92 Long, K.R. U.S. Geological Survey
Updater 01-APR-94 Orris, Greta J. U.S. Geological Survey

Beyond USGS

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