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Feitais/Algares

Plant in Portugal with commodity Sulfur
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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. Nearby scientific data
  8. Ore body information
  9. Economic information about the deposit and operations
  10. Mining district
  11. Ownership information
  12. Production statistics
  13. Workings at the site
  14. Links to other databases
  15. Bibliographic references
  16. General comments
  17. Reporter information

Geologic information

Identification information

Deposit ID 10134299
MAS/MILS ID 4710000006
Record type Site
Current site name Feitais/Algares
Alternate or previous names Moinho/Feitais

Comments on the site names

  • FEITAIS AND ALGARES ARE TWO SECTIONS OF THE SAME MINE. AS OF DEC. 1983, FEITAIS IS ACTIVE, BUT ALGARES IS MINED OUT. THE PLANT DOES NOT INCLUDE BENEFICIATION, BUT CRUSHING ONLY.

Geographic coordinates

Point of reference Main Entrance
Geographic coordinates: -8.16491, 37.86685 (WGS84)

Site location context

Political divisions (FIPS codes)

Portugal(country)

Europe(continent)

Land(continent)

Geographic areas

Country
Portugal

Commodities

Commodity Importance
Sulfur Primary

Materials information

Materials Type of material
Chalcopyrite Unknown
Galena Unknown
Gold Unknown
Silver Unknown
Sphalerite Unknown

Nearby scientific data

Main Entrance (1) -8.16491, 37.86685
ListMap

Economic information

Ore body information

  • Strike N40W
    Dip 67E
    Thickness 50M
    Length 1500M
    Width 800M
    Depth to top 30M
    Field Value
    MAS Matrix # 1
    MAS Column # 1
    Type of Orebody #1 STRATIFORM
    Shape of Orebody #1 TABULAR
    Type of Orebody #2 MASS SULFIDE
    Shape of Orebody #2 IRREGULAR
    Shape of Orebody #3 MASSIVE
    Primary mode of Origin UNKNOWN
    Degree of Wallrock Alter. NONE
    Type of Wallrock Alter. #1 INTERM ARGILLIC
    Type of Wallrock Alter. #2 ADV ARGILLIC
    Strike And Dip N40W:67E
    Minimum Depth to Top 10
    Avg. Thick. Unconsol. Mat. 10
    Date of Last Modification 851108

Comments on the geologic information

  • THE FORMATION NAME IS UNREPORTED. ITS AGE IS LOWER CARBONIFEROUS (EQUIVALENT TO THE MISSISSIPPIAN). THE PYRITE ORE IS FOUND IN A LOWER CARBONIFEROUS VOLCANIC SILICEOUS COMPLEX

Economic information about the deposit and operations

Operation type Underground
Development status Plant
Commodity type Non-metallic
Significant No
Year of first production 1925
Plant subcategory Crush

Mining district

District name Aljustrel

Ownership information

  • Type Unknown
    Owner Edma (Empresa De Desenvolvimiento Mineiro De Alentejo)
    Interest 94
    Year 1983
  • Type Unknown
    Owner Sogemindus
    Interest 6
    Year 1983

Production statistics

  • Year 1973
    Description 45-Percent S Pyrite 85000 Metric Tons Of Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Sulfur Sulfur 85000mt 45wt-pct
  • Year 1974
    Description 45-Percent S Pyrite 81000 Metric Tons Of Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Sulfur Sulfur 81000mt 45wt-pct
  • Year 1975
    Description 45-Percent S Pyrite 78000 Metric Tons Of Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Sulfur Sulfur 78000mt 45wt-pct
  • Year 1976
    Description 45-Percent S Pyrite 72000 Metric Tons Of Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Sulfur Sulfur 72000mt 45wt-pct
  • Year 1977
    Description 45-Percent S Pyrite 62000 Metric Tons Of Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Sulfur Sulfur 62000mt 45wt-pct
  • Year 1978
    Description 45-Percent S Pyrite 56000 Metric Tons Of Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Sulfur Sulfur 56000mt 45wt-pct
  • Year 1979
    Description 45-Percent S Pyrite 85000 Metric Tons Of Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Sulfur Sulfur 85000mt 45wt-pct
  • Year 1980
    Description 45-Percent S Pyrite 110000 Metric Tons Of Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Sulfur Sulfur 110000mt 45wt-pct
  • Year 1981
    Description 45-Percent S Pyrite 84000 Metric Tons Of Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Sulfur Sulfur 84000mt 45wt-pct
  • Year 1982
    Description 45-Percent S Pyrite 55000 Metric Tons Of Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Sulfur Sulfur 55000mt 45wt-pct

Comments on the production information

  • "UNSPECIFIED" IN THE P-RECORD, SIMPLY MEANS CRUSHING.

Comments on the reserve resource information

  • RESOURCES FIGURED ON THE BASIS OF 40% S (MASSIVE SULFIDE) TO ACCOUNT FOR INTRUSIONS OF ACID PYROCLASTIC VOLCANICS WITHIN THE IN-SITU VOLUME. DURING EXTRACTION, THESE NON- SULFIDE BODIES WILL BE MINED AROUND, AS MUCH AS POSSIBLE WITHIN THE 70% RECOVERY FIGURE, YIELDING A MILL FEED WITH GRADE 45% S. .

Workings at the site

  • Type of workings Underground
    Overall depth 200M
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method ACTUAL
    Mining Method HORIZ CUT & FILL W/WASTE ROCK 10-60
    Percent Recovery 70
    Hardness of Rock UNKNOWN
    Rock Characteristics UNKNOWN
    Rock Support Chars. SUPPORTING
    Mine Support Chars. UNKNOWN
    Number of Shafts 1
    1st Condition of Workings OPEN
    2nd Condition of Workings PART ACCESSIBLE
    3rd Condition of Workings UNKNOWN
    Capacity 2000
    Capacity Units MT ORE/DAY
    Unit Production Cost 12.67
    Units of Production $/MT ORE
    Operating Days per Year 250
    Operating Shifts per Day 3
    Year of Information 1983

Comments on other economic factors

  • THE SPECIFIC MINING METHOD IS PROBABLY HORIZONTAL CUT & FILL WITH WASTE ROCK. THE MINE OPERATING COST WILL CHANGE IN 1985.
  • THE PYRITE CONVERSION COSTS ARE PROBABLY REPORTED IN JAN. 1982 DOLLARS.

Reference information

Bibliographic references

  • Deposit

    INDUSTRIAL MINERALS. PORTUGUESE PYRITES, SEPT. 1980,

  • Deposit

    P. 47.

  • Deposit

    MINING JOURNAL. MINING ANNUAL REVIEW, 1981.

  • Deposit

    SULFUR. EXPANSION PLANS AT ALJUSTREL, NO. 148, MAY/JUNE

  • Deposit

    1980.

  • Deposit

    BRITISH SULFUR. WORLD SURVEY OF SULFUR RESOURCES, 2ND.

  • Deposit

    ED., 1974.

Comments on the references

  • INFORMATION SOURCES, WHICH APPEAR TO BE UNPUBLISHED ARE INFORMATION SUPPLIED BY PIRITES ALENTEJANAS, SARL DURING APRIL/MAY 1983 ALJUSTREL MINE VISIT (INVESTIGATOR - FRANK HICKS, ASSISTANT MANAGER OF BENEFICIATION PROJECTS, JACOBS ENGINEERING). INFORMATION SUPPLIED BY MINES ET INDUSTRIES S. A., DURING LOUSAL MINE VISIT (INVESTIGATOR - FRANK HICKS).

General comments

Subject category Comment text
Deposit THE STRIKE AND DIP OF THE MINERALIZED ZONE WERE ROUGHLY ESTIMATED FROM THE REPORT FIGURES 1 AND 2.

Reporter information

Type Date Name Affiliation Comment
Reporter 08-NOV-1985 Amaro, R. U.S. Bureau of Mines

Beyond USGS

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

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