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Yanahara Mine

Plant in Okayama, Japan with commodities Aluminum, Arsenic, Barium-Barite, Copper, Gold, Sulfur-Pyrite, Silver, Sulfur, 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. Mineral rights holdings
  11. Land status
  12. Ownership information
  13. Production statistics
  14. Workings at the site
  15. Links to other databases
  16. Bibliographic references
  17. Reporter information

Geologic information

Identification information

Deposit ID 10207356
MAS/MILS ID 5880310001
Record type Site
Current site name Yanahara Mine

Geographic coordinates

Point of reference Town
Geographic coordinates: 134.08214, 34.91537 (WGS84)
Elevation 66
Location accuracy 5000(meters)

Site location context

Political divisions (FIPS codes)

Okayama(province)

Japan(country)

Asia(continent)

Land(continent)

Geographic areas

Country State
Japan Okayama

Commodities

Commodity Importance
Aluminum Critical Tertiary
Arsenic Critical Tertiary
Barium-Barite Critical Tertiary
Copper Tertiary
Gold Tertiary
Sulfur-Pyrite Tertiary
Silver Tertiary
Sulfur Primary
Zinc Critical Tertiary

Materials information

Materials Type of material
Magnetite Unknown
Pyrite Unknown
Pyrrhotite Unknown

Nearby scientific data

Town (1) 134.08214, 34.91537
ListMap

Economic information

Ore body information

  • Strike N90E
    Dip 25S
    Thickness 10.9M
    Length 540M
    Width 390M
    Depth to top 325M
    Field Value
    MAS Matrix # 2
    MAS Column # 1
    Type of Orebody #1 MASS SULFIDE
    Shape of Orebody #1 LENTICULAR
    Primary mode of Origin UNKNOWN
    Primary Ore Control CONTACT ZONE
    Degree of Wallrock Alter. UNKNOWN
    Type of Wallrock Alter. #1 UNKNOWN
    Strike And Dip N90E:25S
    Minimum Depth to Top 200
    Date of Last Modification 910515

Comments on the geologic information

  • IRON PYRITES, FES2, IS THE SOURCE OF THE IRON AND SULFUR.

Economic information about the deposit and operations

Operation type Underground
Development status Plant
Commodity type Both
Significant Yes
Discovery year 1952
Mining method Open Stope - Sublevel
Year of first production 1969
Plant type Beneficiation (Mill)
Plant subcategory Crush
Milling method Sizing

Mineral rights holdings

Type of mineral rights Minerals Only

Land status

Ownership category Private

Ownership information

  • Type Owner-Operator
    Owner Dowa Mining Corp. Ltd.
    Interest 100
    Home office Japan
    Year 1983

Production statistics

  • Year 1967
    Description Total Pyrtie Ore Mined 840000 Metric Tons For The Year
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Trace Sulfur-Pyrite Sulfur 840000mt
  • Year 1968
    Description Total Pyrite Ore Mined 840000 Metric Tons For The Year
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Trace Sulfur-Pyrite Sulfur 840000mt
  • Year 1969
    Description Total Pyrite Ore Mined 840000 Metric Tons For The Year
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Trace Sulfur-Pyrite Sulfur 840000mt
  • Year 1970
    Description Total Pyrite Ore Mined 834740 Metric Tons For The Year
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Trace Sulfur-Pyrite Sulfur 834740mt
  • Year 1971
    Description Total Pyrite Ore Mined 689624 Metric Tons For The Year
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Trace Ore Sulfur-Pyrite Sulfur 689624mt
  • Year 1972
    Description Total Pyrite Ore Mined 398490 Metric Tons For The Year
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Trace Ore Sulfur-Pyrite Sulfur 398490mt
  • Year 1973
    Description Total Pyrite Ore Mined 386911 Metric Tons For The Year
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Trace Sulfur-Pyrite Sulfur 386911mt
  • Year 1974
    Description Total Pyrite Ore Mined 435470 Metric Tons For The Year
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Trace Sulfur-Pyrite Sulfur 435470mt
  • Year 1975
    Description Total Pyrite Ore Mined 319148 Metric Tons For The Year
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Trace Sulfur-Pyrite Sulfur 319148mt
  • Year 1976
    Description Total Pyrite Ore Mined 196422 Metric Tons For The Year
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Trace Sulfur-Pyrite Sulfur 196422mt
  • Year 1977
    Description Total Pyrite Ore Mined 136744 Metric Tons For The Year
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Trace Sulfur-Pyrite Sulfur 136744mt
  • Year 1978
    Description Total Pyrite Ore Mined 115474 Metric Tons For The Year
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Trace Sulfur-Pyrite Sulfur 115474mt
  • Year 1979
    Description Total Pyrite Ore Mined 138293 Metric Tons For The Year
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Trace Sulfur-Pyrite Sulfur 138293mt
  • Year 1980
    Description Total Pyrite Ore Mined 134783 Metric Tons For The Year
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Trace Sulfur-Pyrite Sulfur 134783mt
  • Year 1981
    Description Total Pyrite Ore Mined 138689 Metric Tons For The Year
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Trace Sulfur-Pyrite Sulfur 138689mt
  • Year 1982
    Description Total Pyrite Ore Mined 134160 Metric Tons For The Year
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Trace Sulfur-Pyrite Sulfur 134160mt
  • Year 1983
    Description Ore Production 134160 Mtpy
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Trace Sulfur Sulfur 134160mt

Comments on the reserve resource information

  • Q-MATRIX 1; COLUMN 1: IFOCS 1982 RESOURCE ESTIMATE, COULD NOT FIND THE BACKUP FOR THIS ESTIMATE. Q-MATRIX 2; COLUMN 1: MAFOS 1983 RESOURCE ESTIMATE USED AS THE BASES FOR PROPERTY EVALUATIONS IN 1985 AND THE UPDATE IN 1986. DATA CAME FROM THE CONTRACTORS DEPOSIT REPORT.

Workings at the site

  • Type of workings Underground
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method ESTIMATE
    Mining Method SUBLEVEL 10-43
    Percent Recovery 90
    Hardness of Rock UNKNOWN
    Rock Characteristics UNKNOWN
    Rock Support Chars. UNKNOWN
    Mine Support Chars. TIMBER
    Number of Shafts 4
    1st Condition of Workings OPEN
    Capacity 516
    Capacity Units MT ORE/DAY
    Operating Days per Year 260
    Operating Shifts per Day 1
    Year of Information 1983

Reference information

Bibliographic references

  • Deposit

    MINING MAGAZINE, VOL. 135, NO. 3, SEPTEMBER 1976, P. 245.

  • Deposit

    E&MJ INTERNATIONAL DIRECTORY OF MINING, 1975.

  • Deposit

    THE BRITISH SULPHUR CORP. LTD., "WORLD SURVEY OF SULPHUR

  • Deposit

    RESOURCES", SECOND EDITION, 1974.

  • Deposit

    RESOURCES", THIRD EDITION, 1985.

Reporter information

Type Date Name Affiliation Comment
Reporter 23-SEP-96 Buckingham, David A. 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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