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Akenobe Mine

Plant in Japan with commodities Copper, Tin, Zinc
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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. Ownership information
  11. Production statistics
  12. Workings at the site
  13. Links to other databases
  14. Bibliographic references
  15. Reporter information

Geologic information

Identification information

Deposit ID 10206690
MAS/MILS ID 5880000003
Record type Site
Current site name Akenobe Mine
Alternate or previous names Mitsubishi Metal

Geographic coordinates

Point of reference Ore Body
Geographic coordinates: 134.49883, 35.33195 (WGS84)

Site location context

Political divisions (FIPS codes)

Japan(country)

Asia(continent)

Land(continent)

Geographic areas

Country
Japan

Commodities

Commodity Importance
Copper Primary
Tin Critical Primary
Zinc Critical Primary

Materials information

Materials Type of material
Cassiterite Unknown
Chalcopyrite Unknown
Sphalerite Unknown

Nearby scientific data

Ore Body (1) 134.49883, 35.33195
ListMap

Economic information

Ore body information

  • Field Value
    MAS Matrix # 1
    MAS Column # 1
    Type of Orebody #1 SHEAR ZONE
    Shape of Orebody #1 IRREGULAR
    Primary mode of Origin HYDROTHERMAL
    Primary Ore Control FRACTURING
    Secondary Ore Control FAULTING
    Date of Last Modification 860829

Comments on the geologic information

  • THE AKENOBE DEPOSIT IS A POLYMETALLIC VEIN TYPE DEPOSIT PRODUCING PRINCIPALLY TIN, COPPER AND ZINC WITH MINOR AMOUNTS OF GOLD AND SILVER. IT HAS BEEN CITED AS ONE OF THE BEST-KNOWN TYPE EXAMPLES OF A ZENOTHERMAL DEPOSIT IN THE WORLD.

Economic information about the deposit and operations

Operation type Underground
Development status Plant
Commodity type Metallic
Significant Yes
Discovery year 1896
Mining method Filled Stopes - Horiz Cut and Fill W/Waste Rock
Plant type Beneficiation (Mill)
Plant subcategory Gravity
Milling method Gravity

Ownership information

  • Type Owner-Operator
    Owner Akenobe Mining Corp.
    Interest 100
    Year 1983

Production statistics

  • Year 1966
    Description Mt Ore/Yr 368000 Mt Ore/Yr
  • Year 1967
    Description Mt Ore/Yr 304000 Mt Ore/Yr
  • Year 1968
    Description Mt Ore/Yr 348000 Mt Ore/Yr
  • Year 1969
    Description Mt Ore/Yr 316000 Mt Ore/Yr
  • Year 1970
    Description Mt Ore/Yr 360000 Mt Ore/Yr
  • Year 1971
    Description Mt Ore/Yr 372000 Mt Ore/Yr
  • Year 1972
    Description Mt Ore/Yr 386000 Mt Ore/Yr
  • Year 1973
    Description Mt Ore/Yr 365000 Mt Ore/Yr
  • Year 1974
    Description Mt Ore/Yr 329000 Mt Ore/Yr
  • Year 1975
    Description Mt Ore/Yr 392000 Mt Ore/Yr
  • Year 1976
    Description Mt Ore/Yr 291000 Mt Ore/Yr
  • Year 1977
    Description Mt Ore/Yr 270000 Mt Ore/Yr
  • Year 1978
    Description Mt Ore/Yr 310000 Mt Ore/Yr
  • Year 1979
    Description Mt Ore/Yr 300000 Mt Ore/Yr
  • Year 1980
    Description Mt Ore/Yr 299000 Mt Ore/Yr
  • Year 1981
    Description Mt Ore/Yr 301000 Mt Ore/Yr
  • Year 1986
    Period 1982-1986
    Description Mt Ore/Yr 1982 Thru 1986 300000 Mt Ore/Yr
  • Year 1987
    Description Mt Ore/Yr 75000 Mt Ore/Yr

Comments on the production information

  • MINE CLOSED MAR 87.
  • THERE IS A $805.00 SMELTING COST FOR PRODUCT A, A $130.00 SMELTING COST FOR PRODUCT B AND A $180.00 SMELTING COST FOR PRODUCT C. THE MILLING COST ASSOCIATED WITH THESE PRODUCTS IS $5.02 PER METRIC TONNE OF ORE PROCESSED.

Comments on the reserve resource information

  • 5,330,000MT RESOURCE 1-82
  • MINE IN HYOGO PREFECTURE CLOSED MAR 87 DUE TO LOW NON-FERROUS METAL PRICES AND ADVERSE YEN/DOLLAR EXCHANGE RATE. MINE HAD BEEN OPERATIANG 120 YRS.

Workings at the site

  • Type of workings Underground
    Overall depth 355M
    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 90
    Hardness of Rock HARDROCK FISSURED WITH MODERATE WATER
    Rock Characteristics UNKNOWN
    Rock Support Chars. SUPPORTING WHEN DRY
    Mine Support Chars. TIMBER
    Number of Shafts 5
    Number of Inclines 17
    Number of Adits 9
    1st Condition of Workings OPEN
    Capacity 1000
    Capacity Units MT ORE/DAY
    Unit Production Cost 27.26
    Units of Production $/MT ORE
    Operating Days per Year 300
    Operating Shifts per Day 3
    Year of Information 1983
  • Type of workings Underground
    Overall depth 355M
    Field Value
    MAS Development Schedule # 1
    Mining Record # 2
    Status of Mining Method ACTUAL
    Mining Method HORIZ CUT & FILL W/WASTE ROCK 10-60
    Percent Recovery 90
    Hardness of Rock HARDROCK FISSURED WITH MODERATE WATER
    Rock Characteristics UNKNOWN
    Rock Support Chars. SUPPORTING WHEN DRY
    Mine Support Chars. TIMBER
    Number of Shafts 5
    Number of Inclines 17
    Number of Adits 9
    1st Condition of Workings OPEN
    Capacity 1000
    Capacity Units MT ORE/DAY
    Unit Production Cost 52.17
    Units of Production $/MT ORE
    Operating Days per Year 300
    Operating Shifts per Day 3
    Year of Information 1989

Comments on other economic factors

  • COPPER, ZINC AND TIN CONCENTRATES ARE TRANSPORTED TO THE NAOSHIMA, AKISTA AND IKUNO SMELTERS RESPECTIVELY OF MITSUBISHI METAL CORPORATION. TRANSPORATION COSTS FOR PRODUCT B IS $12.00 PER MT AND FOR PRODUCT C IS $42.50 PER MT.

Reference information

Bibliographic references

  • Deposit

    VARIOUS COMPANY AND PRIVATE SOURCES AND FROM VERBAL DIS-

  • Deposit

    CUSSIONS WITH COMPANY PERSONNEL.

Reporter information

Type Date Name Affiliation Comment
Reporter 22-SEP-1992 Sabin, A. E. 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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