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Montego

Producer in Sardegna, Italy with commodities Barium-Barite, Fluorine-Fluorite, Lead, Silver
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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. Mineral rights holdings
  12. Land status
  13. Ownership information
  14. Production statistics
  15. Workings at the site
  16. Links to other databases
  17. General comments
  18. Reporter information

Geologic information

Identification information

Deposit ID 10304008
MAS/MILS ID 4750310019
Record type Site
Current site name Montego
Alternate or previous names Montega Barite Deposit

Geographic coordinates

Point of reference Ore Body
Geographic coordinates: 8.75184, 39.04904 (WGS84)
Elevation 200

Site location context

Political divisions (FIPS codes)

Sardegna(province)

Italy(country)

Europe(continent)

Land(continent)

Federal lands

Federal(land status)

Geographic areas

Country State
Italy Sardegna

Commodities

Commodity Importance
Barium-Barite Critical Primary
Fluorine-Fluorite Critical Tertiary
Lead Secondary
Silver Secondary

Materials information

Materials Type of material
Barite Unknown
Calcite Unknown
Dolomite Unknown
Fluorite Unknown
Galena Unknown
Sphalerite Unknown

Nearby scientific data

Ore Body (1) 8.75184, 39.04904
ListMap

Economic information

Ore body information

  • Strike N00E
    Dip 70W
    Thickness 5M
    Length 1000M
    Width 230M
    Depth to top 0M
    Field Value
    MAS Matrix # 1
    MAS Column # 1
    Type of Orebody #1 FISSURE VEIN
    Shape of Orebody #1 TABULAR
    Primary mode of Origin HYDROTHERMAL
    Primary Ore Control FRACTURING
    Secondary Ore Control FAULTING
    Degree of Wallrock Alter. UNKNOWN
    Strike And Dip N00E:70W
    Minimum Depth to Top 0
    Avg. Thick. Unconsol. Mat. 0
    Min. Thick. Unconsol. Mat. 0
    Date of Last Modification 850715

Economic information about the deposit and operations

Operation type Underground
Development status Producer
Commodity type Both
Significant Yes
Mining method Shrinkage Methods - Overhand Shrinkage
Year of first production 1962
Milling method Flotation

Mining district

District name Iglesiente

Mineral rights holdings

Type of mineral rights Fee Ownership

Land status

Ownership category Federal

Ownership information

  • Type Owner-Operator
    Owner Bariosarda (Federally Owned), Cagliari, Sardinia
    Interest 100
    Home office Italy
    Year 1983

Production statistics

  • Year 1968
    Description Av Feed Gd: 45% Baso4, .9%Pb, 7.8g/Mt Ag 40000 Mtpy Ore Mined
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Minor Ore Silver Silver 8g/mt
    Minor Ore Lead Lead 1wt-pct
    Major BaSO4 Ore Barium-Barite Barium 45wt-pct
  • Year 1968
    Description Mud-Grade Barite - 86% Baso4 20000 Mtpy Barite (Mud Grade)
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major BaSO4 Barium-Barite Barium 20000mt 86wt-pct
  • Year 1969
    Description Av Feed Gd: 45% Baso4, .9%Pb, 7.8g/Mt Ag 40000 Mtpy Ore Mined
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Minor Ore Silver Silver 8g/mt
    Minor Ore Lead Lead 1wt-pct
    Major BaSO4 Ore Barium-Barite Barium 45wt-pct
  • Year 1969
    Description Mud-Grade Barite - 86% Baso4 20000 Mtpy Barite (Mud-Grade)
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major BaSO4 Barium-Barite Barium 20000mt 86wt-pct
  • Year 1970
    Description Av Feed Gd: 45% Baso4, .9%Pb, 7.8g/Mt Ag 40000 Mtpy Ore Mined
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Minor Ore Silver Silver 8g/mt
    Minor Ore Lead Lead 1wt-pct
    Major BaSO4 Ore Barium-Barite Barium 45wt-pct
  • Year 1970
    Description Mud-Grade Barite - 86% Baso4 20000 Mtpy Barite (Mud-Grade)
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major BaSO4 Barium-Barite Barium 20000mt 86wt-pct
  • Year 1971
    Description Chemical-Grade Barite - 96% Baso4 3350 Mtpy Barite (Chemical-Gd)
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major BaSO4 Barium-Barite Barium 3350mt 96wt-pct
  • Year 1971
    Description Av Feed Gd: 45% Baso4, .9%Pb, 7.8g/Mt Ag 21000 Mtpy Ore Mined
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major BaSO4 Ore Barium-Barite Barium 45wt-pct
    Minor Ore Silver Silver 8g/mt
    Minor Ore Lead Lead 1wt-pct
  • Year 1971
    Description Mud-Grade Barite - 86% Baso4 3000 Mtpy Barite (Mud-Grade)
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major BaSO4 Barium-Barite Barium 3000mt 86wt-pct
  • Year 1972
    Description Chemical-Grade Barite - 96% Baso4 3350 Mtpy Barite (Chemical Gd)
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major BaSO4 Barium-Barite Barium 3350mt 96wt-pct
  • Year 1972
    Description Av Feed Gd: 45% Baso4, .9%Pb, 7.8g/Mt Ag 21800 Mtpy Ore Mined
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Minor Ore Lead Lead 1wt-pct
    Minor Ore Silver Silver 8g/mt
    Major BaSO4 Ore Barium-Barite Barium 45wt-pct
  • Year 1972
    Description Mud-Grade Barite - 86% Baso4 3400 Mtpy Barite (Mud-Grade)
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major BaSO4 Barium-Barite Barium 3400mt 86wt-pct
  • Year 1973
    Description Chemical-Grade Barite - 96% Baso4 4810 Mtpy Barite (Chemical Gd)
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major BaSO4 Barium-Barite Barium 4810mt 96wt-pct
  • Year 1973
    Description Av Feed Gd: 45% Baso4, .9%Pb, 7.8g/Mt Ag 37500 Mtpy Ore Mined
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Minor Ore Lead Lead 1wt-pct
    Minor Ore Silver Silver 8g/mt
    Major BaSO4 Ore Barium-Barite Barium 45wt-pct
  • Year 1973
    Description Mud-Grade Barite - 86% Baso4 2800 Mtpy Barite (Mud-Grade)
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major BaSO4 Barium-Barite Barium 2800mt 86wt-pct
  • Year 1974
    Description Chemical-Grade Barite - 96% Baso4 5650 Mtpy Barite (Chemical Gd)
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major BaSO4 Barium-Barite Barium 5650mt 96wt-pct
  • Year 1974
    Description Av Feed Gd: 45% Baso4, .9%Pb, 7.8g/Mt Ag 30900 Mtpy Ore Mined
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major BaSO4 Ore Barium-Barite Barium 45wt-pct
    Minor Ore Silver Silver 8g/mt
    Minor Ore Lead Lead 1wt-pct
  • Year 1974
    Description Mud-Grade Barite - 86% Baso4 2460 Mtpy Barite (Mud-Grade)
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major BaSO4 Barium-Barite Barium 2460mt 86wt-pct
  • Year 1975
    Description Chemical-Grade Barite - 96% Baso4 11748 Mtpy Barite (Chemical Gd)
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major BaSO4 Barium-Barite Barium 11748mt 96wt-pct
  • Year 1975
    Description Av Feed Gd: 45% Baso4, .9%Pb, 7.8g/Mt Ag 45100 Mtpy Ore Mined
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Minor Ore Silver Silver 8g/mt
    Minor Ore Lead Lead 1wt-pct
    Major BaSO4 Ore Barium-Barite Barium 45wt-pct
  • Year 1975
    Description Mud-Grade Barite - 86% Baso4 2070 Mtpy Barite (Mud-Grade)
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major BaSO4 Barium-Barite Barium 2070mt 86wt-pct
  • Year 1976
    Description Chemical-Grade Barite - 96% Baso4 11571 Mtpy Barite (Chemical Gd)
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major BaSO4 Barium-Barite Barium 11571mt 96wt-pct
  • Year 1976
    Description Mud-Grade Barite - 86% Baso4 249 Mtpy Barite (Mud-Grade)
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major BaSO4 Barium-Barite Barium 249mt 86wt-pct
  • Year 1976
    Description Av Feed Gd: 45% Baso4, .9%Pb, 7.8g/Mt Ag 41500 Mtpy Ore Mined
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Silver Silver 8g/mt
    Minor Ore Lead Lead 1wt-pct
    Major BaSO4 Ore Barium-Barite Barium 45wt-pct
  • Year 1977
    Description Chemical-Grade Barite - 96% Baso4 15038 Mtpy Barite (Chemical Gd)
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major BaSO4 Barium-Barite Barium 15038mt 96wt-pct
  • Year 1977
    Description Mud-Grade Barite - 86% Baso4 Mtpy Barite (Mud-Grade)
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major BaSO4 Ore Barium-Barite Barium 86wt-pct
  • Year 1977
    Accuracy Estimate
    Description Estimated Grade-60% Pbs, 800g/Mt Ag 573 Mtpy Lead Concentrate
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Minor Silver Silver 800g/mt
    Minor Conc. Lead Lead 60wt-pct
  • Year 1977
    Description Av Feed Gd: 45% Baso4, .9%Pb, 7.8g/Mt Ag 51600 Mtpy Ore Mined
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Minor Ore Silver Silver 8g/mt
    Minor Ore Lead Lead 1wt-pct
    Major BaSO4 Ore Barium-Barite Barium 45wt-pct
  • Year 1978
    Description Mud-Grade Barite - 86% Baso4 Mtpy Barite (Mud-Grade)
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major BaSO4 Barium-Barite Barium 86wt-pct
  • Year 1978
    Description Chemical-Grade Barite - 96% Baso4 25062 Mtpy Barite (Chemical Gd)
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major BaSO4 Barium-Barite Barium 25062mt 96wt-pct
  • Year 1978
    Accuracy Estimate
    Description Estimated Grade-60% Pbs, 800g/Mt Ag 800 Mtpy Lead Concentrate
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Minor Silver Silver 800g/mt
    Minor Conc. Lead Lead 800mt 60wt-pct
  • Year 1978
    Description Av Feed Gd: 45% Baso4, .9%Pb, 7.8g/Mt Ag 86000 Mtpy Ore Mined
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Minor Ore Silver Silver 8wt-pct
    Minor Ore Lead Lead 1wt-pct
    Major BaSO4 Ore Barium-Barite Barium 45wt-pct
  • Year 1979
    Description Mud-Grade Barite - 86% Baso4 Mtpy Barite (Mud-Grade)
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major BaSO4 Barium-Barite Barium 86wt-pct
  • Year 1979
    Description Chemical-Grade Barite - 96% Baso4 25375 Mtpy Barite (Chemical Gd)
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major BaSO4 Barium-Barite Barium 25375mt 96wt-pct
  • Year 1979
    Accuracy Estimate
    Description Estimated Grade-60% Pbs, 800g/Mt Ag 870 Mtpy Lead Concentrate
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Minor Silver Silver 800g/mt
    Minor Conc. Lead Lead 870mt 60wt-pct
  • Year 1979
    Description Av Feed Gd: 45% Baso4, .9%Pb, 7.8g/Mt Ag 87500 Mtpy Ore Mined
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Minor Ore Silver Silver 8g/mt
    Minor Ore Lead Lead 1wt-pct
    Major BaSO4 Ore Barium-Barite Barium 45wt-pct
  • Year 1980
    Description Mud-Grade Barite - 86% Baso4 11500 Mtpy Barite (Mud-Grade)
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major BaSO4 Barium-Barite Barium 11500mt 86wt-pct
  • Year 1980
    Description Chemical-Grade Barite - 96% Baso4 36433 Mtpy Barite (Chemical Gd)
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major BaSO4 Barium-Barite Barium 36433mt 96wt-pct
  • Year 1980
    Accuracy Estimate
    Description Estimated Grade-60% Pbs, 800g/Mt Ag 900 Mtpy Lead Concentrate
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Minor Silver Silver 800g/mt
    Minor Conc. Lead Lead 900mt 60wt-pct
  • Year 1980
    Description Av Feed Gd: 45% Baso4, .9%Pb, 7.8g/Mt Ag 110400 Mtpy Ore Mined
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Minor Ore Silver Silver 8g/mt
    Minor Ore Lead Lead 1wt-pct
    Major BaSO4 Ore Barium-Barite Barium 45wt-pct
  • Year 1981
    Description Mud-Grade Barite - 86% Baso4 11700 Mtpy Barite (Mud-Grade)
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Barium-Barite Barium 11700mt 86wt-pct
  • Year 1981
    Accuracy Estimate
    Description Estimated Grade-60% Pbs, 800g/Mt Ag 890 Mtpy Lead Concentrate
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Minor Silver Silver 800g/mt
    Minor Conc. Lead Lead 890mt 60wt-pct
  • Year 1981
    Description Chemical-Grade Barite - 96% Baso4 37125 Mtpy Barite (Chemical Gd)
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Barium-Barite Barium 37125mt 96wt-pct
  • Year 1981
    Description Av Feed Gd: 45% Baso4, .9%Pb, 7.8g/Mt Ag 112400 Mtpy Ore Mined
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Minor Ore Silver Silver 8g/mt
    Minor Ore Lead Lead 1wt-pct
    Major BaSO4 Ore Barium-Barite Barium 45wt-pct
  • Year 1982
    Description Mud-Grade Barite - 86% Baso4 11800 Mtpy Barite (Mud-Grade)
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major BaSO4 Barium-Barite Barium 11800mt 86wt-pct
  • Year 1982
    Accuracy Estimate
    Description Estimated Grade-60% Pbs, 800g/Mt Ag 880 Mtpy Lead Concentrate
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Minor Silver Silver 800g/mt
    Minor Conc. Lead Lead 880mt 60wt-pct
  • Year 1982
    Description Chemical-Grade Barite - 96% Baso4 37103 Mtpy Barite (Chemical Gd)
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major BaSO4 Barium-Barite Barium 37103mt 96wt-pct
  • Year 1982
    Description Av Feed Gd: 45% Baso4, .9%Pb, 7.8g/Mt Ag 112500 Mtpy Ore Mined
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Minor Ore Silver Silver 8g/mt
    Minor Ore Lead Lead 1wt-pct
    Major BaSO4 Ore Barium-Barite Barium 45wt-pct

Comments on the production information

  • REC PA IS MUD-GRADE BARITE CONCENTRATE (86% BASO4)- JIG PRODUCT. REC PB IS CHEMICAL-GRADE BARITE CONC. (96% BASO4) AND IS FLOAT PRODUCT.
  • UNDERGROUND HAULAGE DISTANCE IS 600 METERS. (AVERAGE) ALL INFORMATION PROVIDED FOR THIS DATA BASE IS FROM THE BAREGA AND MONTEGA FOREIGN BARITE DEPOSIT REPORT BY BROWN & ROOT DEVELOPMENT, INC., HOUSTON, TEXAS, AUG. 2, 1983, UNDER USBM CONTRACT NO.J0225017 DEVELOPMENT OF ENGINEERING AND COST DATA FOR FOREIGN ANTIMONY/BARITE PROPERTIES. FEED GRADES ADJUSTED FROM IN-SITU GRADES FOR 10% DILUTION. MONTEGO DEPOSIT IS VEIN DEPOSIT WHICH OCCURS IN SULCIS SERIES OUTCROP CONSISTING OF SANDSTONE, CALCARIOUS DOLOMITE, LIMESTONE, CAMBRIAN AND ORDOVICIAN SCHISTS. VEIN WIDTH RANGES FROM 1.5- TO 8-METERS WIDE (MINIMUM MINEABLE WITH 1.5 METERS). GALENA MASSES ARE VERTICAL COLUMNS WITH 500-2000 SQ METERS HORIZONTAL SECTIONS. 60% OF ORE MINED CONTAINS BARITE ONLY; 40% CONSISTS OF BARITE-GALENA CONTAINING 30% BASO4 AND 2.5% PBS. (ORE GRADE CONTROL ON BARITE ONLY) MONTEGA IS ONE OF OLDEST MINES IN SARDINIA. IT WAS ABANDONED AS A LEAD MINE; REOPENED AS A BARITE MINE IN 1965. PRODUCTION BEFORE 1968 NOT REPORTED.

Comments on the reserve resource information

  • REC PA IS MUD-GRADE BARITE CONCENTRATE (86% BASO4)- JIG PRODUCT. REC PB IS CHEMICAL-GRADE BARITE CONC. (96% BASO4) AND IS FLOAT PRODUCT. M9C4=M1C1 MATRIX 9, COL 4 = MATRIX 1, COL 1 PROVEN RESERVES = 90% PROB CAT; PROV. + INDICATED RESERVES = 75% PROB CAT; PROV. + IND. + INFERRED RESERVES = 50% PROB. CAT

Workings at the site

  • Type of workings Underground
    Length 8000M
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method ESTIMATE
    Mining Method OVERHAND SHRINKAGE 10-67
    Percent Recovery 90
    Hardness of Rock HARDROCK FISSURED WITH EXCESSIVE WATER
    Rock Characteristics NO PLANES OF WEAKNESS
    Rock Support Chars. SUPPORTING
    Mine Support Chars. TIMBER
    Length of Inclines (m) 56
    Slope of Inclines 9
    Number of Inclines 1
    1st Condition of Workings OPEN
    2nd Condition of Workings PART ACCESSIBLE
    3rd Condition of Workings FLOODED
    Capacity 450
    Capacity Units MT ORE/DAY
    Unit Production Cost 14.84
    Units of Production $/MT ORE
    Operating Days per Year 250
    Operating Shifts per Day 3
    Year of Information 1983

Comments on other economic factors

  • REC PA IS MUD-GRADE BARITE CONCENTRATE (86% BASO4)- JIG PRODUCT. REC PB IS CHEMICAL-GRADE BARITE CONC. (96% BASO4) AND IS FLOAT PRODUCT. M9C4=M1C1; PROVEN RESERVES = 90% PROB CAT; PROV. + INDICATED RESERVES = 75% PROB CAT; PROV. + IND. + INFERRED RESERVES = 50% PROB. CAT MINE TO MILL TRANS. COST INCLUDED IN MINE OP COSTS. MUD-GRADE BARITE SHIPPED TO CAGLIARI, SARDINIA GRINDING PLANT (60KM, $5.00/MT) AND TO MAINLAND ITALY (60KM BY TRUCK TO CAGLIARI, $5.00/MT THEN 375 KM (AVERAGE) BY SHIP TO MAINLAND FOR AVERAGE COST $7.33/MT. BARITE SOLD F.O.B. GALENA CONCENTRATE ALSO TRUCKED TO THE MASUA SMELTER, CAGLIARI, SARDINIA.
  • UNDERGROUND HAULAGE DISTANCE IS 600 METERS. (AVERAGE) ALL INFORMATION PROVIDED FOR THIS DATA BASE IS FROM THE BAREGA AND MONTEGA FOREIGN BARITE DEPOSIT REPORT BY BROWN & ROOT DEVELOPMENT, INC., HOUSTON, TEXAS, AUG. 2, 1983, UNDER USBM CONTRACT NO.J0225017 DEVELOPMENT OF ENGINEERING AND COST DATA FOR FOREIGN ANTIMONY/BARITE PROPERTIES. FEED GRADES ADJUSTED FROM IN-SITU GRADES FOR 10% DILUTION. MONTEGO DEPOSIT IS VEIN DEPOSIT WHICH OCCURS IN SULCIS SERIES OUTCROP CONSISTING OF SANDSTONE, CALCARIOUS DOLOMITE, LIMESTONE, CAMBRIAN AND ORDOVICIAN SCHISTS. VEIN WIDTH RANGES FROM 1.5- TO 8-METERS WIDE (MINIMUM MINEABLE WITH 1.5 METERS). GALENA MASSES ARE VERTICAL COLUMNS WITH 500-2000 SQ METERS HORIZONTAL SECTIONS. 60% OF ORE MINED CONTAINS BARITE ONLY; 40% CONSISTS OF BARITE-GALENA CONTAINING 30% BASO4 AND 2.5% PBS. (ORE GRADE CONTROL ON BARITE ONLY) MONTEGA IS ONE OF OLDEST MINES IN SARDINIA. IT WAS ABANDONED AS A LEAD MINE; REOPENED AS A BARITE MINE IN 1965. PRODUCTION BEFORE 1968 NOT REPORTED. ALL ORIGINAL CAPITAL COSTS ARE DEPRECIATED. THE ONLY CAPITAL COSTS ARE EXPLORATION (CAPITALIZED) AND EQPT REINVESTMENT. WORKING CAPITAL IS 1/4 OF ANNUAL OP. COSTS.
  • UNDERGROUND HAULAGE DISTANCE IS 600 METERS. (AVERAGE) ALL INFORMATION PROVIDED FOR THIS DATA BASE IS FROM THE BAREGA AND MONTEGA FOREIGN BARITE DEPOSIT REPORT BY BROWN & ROOT DEVELOPMENT, INC., HOUSTON, TEXAS, AUG. 2, 1983, UNDER USBM CONTRACT NO.J0225017 DEVELOPMENT OF ENGINEERING AND COST DATA FOR FOREIGN ANTIMONY/BARITE PROPERTIES. FEED GRADES ADJUSTED FROM IN-SITU GRADES FOR 10% DILUTION.
  • REC PA IS MUD-GRADE BARITE CONCENTRATE (86% BASO4)- JIG PRODUCT. REC PB IS CHEMICAL-GRADE BARITE CONC. (96% BASO4) AND IS FLOAT PRODUCT. M9C4=M1C1; PROVEN RESERVES = 90% PROB CAT; PROV. + INDICATED RESERVES = 75% PROB CAT; PROV. + IND. + INFERRED RESERVES = 50% PROB. CAT MINE TO MILL TRANS. COST INCLUDED IN MINE OP COSTS. MUD-GRADE BARITE SHIPPED TO CAGLIARI, SARDINIA GRINDING PLANT (60KM, $5.00/MT) AND TO MAINLAND ITALY (60KM BY TRUCK TO CAGLIARI, $5.00/MT THEN 375 KM (AVERAGE) BY SHIP TO MAINLAND FOR AVERAGE COST $7.33/MT. BARITE SOLD F.O.B. GALENA CONCENTRATE ALSO TRUCKED TO THE MASUA SMELTER, CAGLIARI, SARDINIA. MINE DILUTION IS 10% AVERAGE HAUL DISTANCE (FACE TO PORTAL) IS 100 METERS. ROCK IS COMPETENT, BUT SOME ROOF SUPPORT WITH WOOD AND STEEL WERE REQUIRED. APPROXIMATELY 5 TO 10% OF DRIFTS REQUIRE ROOF SUPPORT. AT ANY GIVEN TIME, THERE ARE 6 WORKING AND 8 DEVELOPMENT STOPES. WATER IS A PROBLEM AND APPROXIMATELY 1500 CU METERS AT A STATIC HEAD OF 96 METERS IS PUMPED OUT OF MINE EACH DAY.

Reference information

General comments

Subject category Comment text
Deposit UNDERGROUND HAULAGE DISTANCE IS 600 METERS. (AVERAGE) ALL INFORMATION PROVIDED FOR THIS DATA BASE IS FROM THE BAREGA AND MONTEGA FOREIGN BARITE DEPOSIT REPORT BY BROWN & ROOT DEVELOPMENT, INC., HOUSTON, TEXAS, AUG. 2, 1983, UNDER USBM CONTRACT NO.J0225017 DEVELOPMENT OF ENGINEERING AND COST DATA FOR FOREIGN ANTIMONY/BARITE PROPERTIES. FEED GRADES ADJUSTED FROM IN-SITU GRADES FOR 10% DILUTION. MONTEGO DEPOSIT IS VEIN DEPOSIT WHICH OCCURS IN SULCIS SERIES OUTCROP CONSISTING OF SANDSTONE, CALCARIOUS DOLOMITE, LIMESTONE, CAMBRIAN AND ORDOVICIAN SCHISTS. VEIN WIDTH RANGES FROM 1.5- TO 8-METERS WIDE (MINIMUM MINEABLE WITH 1.5 METERS). GALENA MASSES ARE VERTICAL COLUMNS WITH 500-2000 SQ METERS HORIZONTAL SECTIONS. 60% OF ORE MINED CONTAINS BARITE ONLY; 40% CONSISTS OF BARITE-GALENA CONTAINING 30% BASO4 AND 2.5% PBS. (ORE GRADE CONTROL ON BARITE ONLY)

Reporter information

Type Date Name Affiliation Comment
Reporter 05-SEP-1985 Hite, Alan G. U.S. Bureau of Mines

Beyond USGS

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

Maps centered on this site