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Andasifahatelo Mine

Producer in Toamasina, Madagascar with commodity Graphite
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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. Bibliographic references
  18. General comments
  19. Reporter information

Geologic information

Identification information

Deposit ID 10280282
MAS/MILS ID 7880100013
Record type Site
Current site name Andasifahatelo Mine
Alternate or previous names Andasifahatelo

Geographic coordinates

Point of reference Ore Body
Geographic coordinates: 48.43436, -18.89685 (WGS84)
Location accuracy 5000(meters)

Site location context

Political divisions (FIPS codes)

Toamasina(province)

Madagascar(country)

Africa(continent)

Land(continent)

Federal lands

Federal(land status)

Geographic areas

Country State
Madagascar Toamasina

Commodities

Commodity Importance
Graphite Critical Primary

Materials information

Materials Type of material
Graphite Unknown

Nearby scientific data

Ore Body (1) 48.43436, -18.89685
ListMap

Economic information

Ore body information

  • Strike N00E
    Dip 20E
    Thickness 20M
    Depth to top 27M
    Field Value
    MAS Matrix # 1
    MAS Column # 1
    Type of Orebody #1 STRATIFORM
    Shape of Orebody #1 TABULAR
    Primary mode of Origin RESIDUAL CONCENT
    Secondary mode of Origin OXIDATION
    Primary Ore Control BEDDING
    Secondary Ore Control LITHOLOGY
    Degree of Wallrock Alter. SLIGHT
    Strike And Dip N00E:20E
    Minimum Depth to Top 0
    Avg. Thick. Unconsol. Mat. 27
    Min. Thick. Unconsol. Mat. 0
    Date of Last Modification 840629
  • Area 2000HA
    Field Value
    Total Surface Area (HA) 2000
    Date of Last Modification 910418

Comments on the geologic information

  • ALL 8 OF THE MADAGASCAR GRAPHITE PROPERTIES STUDIED UNDER THE 1981-83 ZELLARS-WILLIAMS CONTRACT FALL WITHIN THE GEOGRAPHICALLY-DEFINED MANAMPOTSY GROUP OF DEPOSITS. THESE DEPOSITS ARE CHARACTERIZED BY OCCURRENCES OF GNEISS AND MIGMATITE WITHIN AMPHIBOLITE FACIES WHERE INTENSE WEATHERING HAS LATERIZED THE ROCKS PRODUCING UP TO 30 METERS OF RED CLAY IN WHICH THE GRAPHITE OCCURS AS DIS- SEMINATED, HIGH-QUALITY, CRYSTALLINE FLAKES. THESE CLAYS CONTAIN FROM 5 TO 15 PERCENT CARBON.

Economic information about the deposit and operations

Operation type Surface
Development status Producer
Commodity type Non-metallic
Significant Yes
Mining method Strip-Hillside
Year of first production 1920
Milling method Flotation

Mining district

District name Manampotsy

Mineral rights holdings

Type of mineral rights Federal Lease

Land status

Ownership category Federal

Ownership information

  • Type Owner-Operator
    Owner Societe Arsene Louys Et Compagnie
    Interest 100
    Home office Malagasy Rep.
    Year 1983

Production statistics

  • Year 1967
    Description Ore Tonnages Were Calculated From 40100 Mt Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Graphite Graphite 40100mt
  • Year 1968
    Description Product Tonnages Supplied By Madagascar 27800 Mt Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Graphite Graphite 27800mt
  • Year 1969
    Description Ministere De L'Industrie Et Du Commerce. 16300 Mt Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Graphite Graphite 16300mt
  • Year 1970
    Description 23600 Mt Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Graphite Graphite 23600mt
  • Year 1971
    Description 25900 Mt Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Graphite Graphite 25900mt
  • Year 1972
    Description 25600 Mt Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Graphite Graphite 25600mt
  • Year 1973
    Description 14800 Mt Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Graphite Graphite 14800mt
  • Year 1974
    Description 21600 Mt Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Graphite Graphite 21600mt
  • Year 1975
    Description 23700 Mt Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Graphite Graphite 23700mt
  • Year 1976
    Description 23300 Mt Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Graphite Graphite 23300mt
  • Year 1977
    Description 20200 Mt Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Graphite Graphite 20200mt
  • Year 1978
    Description 18500 Mt Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Graphite Graphite 18500mt
  • Year 1979
    Description 18500 Mt Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Graphite Graphite 18500mt
  • Year 1980
    Description 15100 Mt Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Graphite Graphite 15100mt
  • Year 1981
    Description 14500 Mt Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Graphite Graphite 14500mt
  • Year 1982
    Description 16800 Mt Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Graphite Graphite 16800mt

Comments on the production information

  • THE PRODUCTS FROM 7 OF THE 8 GRAPHITE MINES IN MADAGASCAR ARE IDENTICAL. MAROVINTSY, SAHANAVO, SAHAMAMY, FALIARANO, AMBATOMITAMBA, ANTSIRAKAMBO, AND TSARAVONIANY ALL PRODUCE PRODUCTS WITH THE FOLLOWING CHARACTERISTICS: PRODUCT SIZE PERCENT NAME DISTRIBUTION CARBON ----------------------------------------------- LARGE 75% +40 MESH 85 FLAKE 22% -40+60 MESH 3% -60 MESH MEDIUM 25% +40 MESH 85 FLAKE 72% -40+80 MESH 3% -80 MESH FINE 25% +40 MESH 85 FLAKE 50% -40+60 MESH 20% -60+80 MESH 5% -80 MESH EXTRA PASSES 80 MESH 85 FINE (POWDER) ------------------------------------------------- THE PROPORTIONS OF EACH PRODUCT PRODUCED AT EACH MINE ARE SUMMARIZED BELOW: MINE LARGE MEDIUM FINE EXTRA NAME FLAKE FLAKE FLAKE FINE ------------------------------------------------------------ MAROVINTSY 8.5% 21.3% 39.7% 30.5% SAHANAVO 10% 70% ON REQUEST 20% SAHAMAMY 50% LARGE + MEDIUM 43% 7% FALIARANO 10% 40% 40% 10% AMBATOMITAMBA 10% 70% ON REQUEST 20% ANTSIRAKAMBO 20% 50% 20% 10% TSARAAVONIANY 10% 40% 40% 10% ------------------------------------------------------------ THE ANDASIFAHATELO PROPERTY PRODUCES ONLY ONE PRODUCT, A MEDIUM FLAKE HAVING THE SAME SIZE CHARACTERISTICS AS THE MEDIUM FLAKE DESCRIBED IN THE ABOVE TABLES, BUT HAVING A CARBON GRADE OF 92 PERCENT.

Comments on the reserve resource information

  • M1C1=M9C4. MINE RECOVERY ESTIMATED AT 95%. DILUTION = 0%. RECOVERABLE RESOURCE IS 1,532,800 MT. GRADE GIVEN IS WEIGHT-PERCENT CARBON. NO DATA AVAILABLE ON INFERRED RESOURCES.
  • RESERVE CALCULATIONS BASED ON THE GRAPHITE SECTION FROM GITES DE MINERAUX DE MADAGASCAR V.1 AND 2, 1966. RES. UPDATED TO DEC 1988

Workings at the site

  • Type of workings Surface
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method ACTUAL
    Mining Method OPEN PIT
    Swell Factor .6
    Percent Waste Rock 57
    Avg. Overburden Thickness 27
    Primary Material Cover SAND, SILT
    Percentage 100
    Hardness of Ore SAND, SILT
    Max. Pit Slope (degrees) 20
    Capacity 69
    Capacity Units MT ORE/DAY
    Unit Production Cost 13.34
    Units of Production $/MT ORE
    Operating Days per Year 290
    Operating Shifts per Day 2
    Year of Information 1983

Comments on other economic factors

  • TRANSPORTATION IS BY SLUICE - DISTANCE IS NOT KNOWN.

Reference information

Bibliographic references

  • Deposit

    BESAIRIE, HENRI. GITES DE MINERAUX DE MADAGASCAR.

  • Deposit

    VOL. 1, 1966, TANANARIVE, MADAGASCAR, PP. 187-216.

  • Deposit

    VOL. 2, 1966, TANANARIVE, MADAGASCAR, MAPS 43-52.

  • Deposit

    MURDOCK, T.G. MINERAL RESOURCES OF THE MALAGASY REPUBLIC.

  • Deposit

    BUMINES IC 8196, 1963, PP. 112-121.

General comments

Subject category Comment text
Deposit THE DATA IN THIS DATA BASE ENTRY WERE GATHERED UNDER BUREAU OF MINES CONTRACT J0225019, "THE DEVELOPMENT OF ENGINEERING AND COST DATA FOR FOREIGN GRAPHITE PROPERTIES"; THE CONTRACT WAS AWARDED TO ZELLARS-WILLIAMS, INC. IN SEPTEMBER 1982. ALL GRAPHITE MINES IN MADAGASCAR USE THE SAME MINING METHOD. SMALL OPEN PITS (GENERALLY 1 TO 5 IN NUMBER) ARE MINED BY FRONT-END LOADER OR BULLDOZER WITHOUT BLASTING. THE OVERBURDEN IS EITHER HAULED AWAY BY TRUCK OR, IF IT IS VERY THIN, IS WASHED WITH THE ORE. THE ORE IS EITHER TRUCKED TO A FIELD WASHER OR IS WASHED INTO A SLUICE BY A WATER GUN FOR GRAVITY FLOW TO THE FIELD WASHER. WATER GUNS ARE FED BY WATER PUMPED FROM A NEARBY RIVER. MILLING IS A TWO-STAGE PROCESS CARRIED OUT AT A "POSTES DE DEBOURBAGE" (FIELD WASHER) AND THEN AT A "RAFFINAGE" (REFINERY). AT THE FIELD WASHER, THE ORE IS FIRST SLURRIED USING A WATER GUN IF NOT ALREADY IN SLURRY FORM. A GRIZZLY IS THEN USED TO REMOVE STONES THAT ARE +5 MM IN SIZE. OCCASIONALLY THE ORE IS ALSO DESLIMED BY SCREEN- ING AT ABOUT 50 MESH. DIESEL FUEL OIL AND ALCOHOL-BASED FROTHERS ARE THEN ADDED PRIOR TO ROUGHER FLOTATION. THE ROUGHER CONCENTRATES VARY FROM 62 TO 67 PERCENT CARBON. TAILS ARE DISCHARGED BY GRAVITY INTO THE NEARBY RIVER. THE ROUGHER CONCENTRATE FLOWS BY GRAVITY TO THE REFINERY WHERE IT IS GROUND IN A BALL MILL, FLOATED, AND DRIED IN A ROTARY DRYER. THE DRIED CLEANER CONCENTRATE IS SIZED USING VIBRATING SCREENS AND BAGGED. ROD MILLS ARE USED AT SOME OPERATIONS INSTEAD OF BALL MILLS. IN THE SURFACE, CONCENTRATOR, AND PRODUCT DATA SETS, THE OP. COST SHOWN IS FOR 1983 AND LATER YEARS, NOT FOR 1982. THIS WAS DONE BECAUSE THE OPERATION IS ASSUMED TO GO TO FULL CAPACITY PRODUCTION IN 1983. ALL CAPACITIES SHOWN IN THESE DATA SETS ALSO REFLECT FULL CAPACITY OPERATION, NOT THE 1982 PRODUCTION LEVEL.

Reporter information

Type Date Name Affiliation Comment
Reporter 27-MAY-86 Z&W Inc 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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