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Ainai Zn - Cu - Pb - Pyrite Mine

Producer in Akita, Japan with commodities Zinc, Copper, Lead, Sulfur-Pyrite, Silver, Gold
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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. Host and associated rocks
  8. Nearby scientific data
  9. Geologic structures
  10. Ore body information
  11. Controls for ore emplacement
  12. Economic information about the deposit and operations
  13. Mining district
  14. Ownership information
  15. Production statistics
  16. Reserves and resources
  17. Links to other databases
  18. Bibliographic references
  19. General comments
  20. Reporter information

Geologic information

Identification information

Deposit ID 10073088
MRDS ID W018902
Record type Site
Current site name Ainai Zn - Cu - Pb - Pyrite Mine

Geographic coordinates

Geographic coordinates: 140.71527, 40.3818 (WGS84)
Relative position 16 KM NE OF OHDATE CITY

Site location context

Political divisions (FIPS codes)

Akita(province)

Japan(country)

Asia(continent)

Land(continent)

Geographic areas

Country State
Japan Akita

Commodities

Commodity Importance
Zinc Critical Primary
Copper Primary
Lead Primary
Sulfur-Pyrite Secondary
Silver Secondary
Gold Secondary

Materials information

Materials Type of material
Chalcopyrite Ore
Galena Ore
Pyrite Ore
Sphalerite Ore
Gypsum Gangue
Quartz Gangue

Host and associated rocks

  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Pyroclastic Rock > Volcanic Breccia (Agglomerate)
    Stratigraphic age (youngest) Miocene
    Stratigraphic age (youngest) Miocene
  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Rhyolite
  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Mafic Volcanic Rock > Basalt
    Rock unit name Nishikurosawa Formation-Volcanics And Pyroclastics;Other Green Tuff Horizons
    Rock description Nishikurosawa Formation-Volcanics And Pyroclastics;Other Green Tuff Horizons
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Pyroclastic Rock > Volcanic Breccia (Agglomerate)
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Rhyolite
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Mafic Volcanic Rock > Basalt

Nearby scientific data

(1) 140.71527, 40.3818
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Hokuroku Basin
Type of structure Local
Structure description Rhyolite Domes

Ore body information

  • General form BEDS

Controls for ore emplacement

  • Associated With Rhyolite Domes

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Deposit size Medium
Significant No
Discovery year 1860

Mining district

District name Hokurku Basin

Ownership information

  • Type Operator
    Owner Nitto Metal Mining Co.
  • Type Owner
    Owner Dowa Mining Co.

Production statistics

  • Year 1973
    Material ORE
    Accuracy Accurate
    Description Ap_Grade: ^4.03 % Zn, 1.58 % Cu, 1.29 % Pb, 76 G/Mt Ag, 1.6 G/Mt Au, 10.1 % Pyr
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Ore Gold Gold 2g/mt
    Major Ore Zinc Zinc 4wt-pct
    Ore Pyrite Pyrite 10wt-pct
    Minor Ore Silver Silver 76g/mt
    Major Ore Lead Lead 1wt-pct
    Minor Ore Copper Copper 2wt-pct

Reserves and resources

  • Type In-situ
    Estimate year 1974
    Total resources 8000000000mt ore
    Commodity Subtype Grade units Group Importance Year
    Zinc Zn 4.96 wt-pct Zinc Major 1974
    Copper Cu 2.2 wt-pct Copper Major 1974
    Lead Pb 1.39 wt-pct Lead Major 1974
    Sulfur-Pyrite S_P 19.3 wt-pct Sulfur Minor 1974
  • Type In-situ
    Estimate year 1974
    Total resources 8000000mt ore
    Commodity Subtype Grade units Group Importance Year
    Zinc Zn 4.96 wt-pct Zinc Major 1974
    Copper Cu 2.2 wt-pct Copper Major 1974
    Lead Pb 1.39 wt-pct Lead Major 1974
    Sulfur-Pyrite S_P 19.3 wt-pct Sulfur Minor 1974

Comments on the reserve resource information

  • ITEM ONE ESTIMATED BY 10 MIL T MINUS 2 MIL. T. PROD. THROUGH 1973. ANOTHER SOURCE (ISHIKAWA Y., YANAGISAWA Y., 1974) GIVE RESERVES AS 4.07 MIL. T.
  • ITEM ONE ESTIMATED BY 10 MIL. T. MINUS 2 MIL. T. PROD. THROUGH 1973. ANOTHER SOURCE (ISHIKAWA Y., YANAGISAWA Y., 1974) GIVE RESERVES AS 4.07 MIL. T.

Reference information

Bibliographic references

General comments

Subject category Comment text
Deposit YUNOSAWA - SUEHIRO 100 X 50 X 30 M., DAIKOKU 100 X 200 X 40 M., BENTEN 200 X 100 X 30 M., YOKODAWARA - HAGOROMO 300 X 150 X 5 M., YUNOSAWA - NORTH 100 X 150 X 30 M.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-FEB-1977 Schruben, Paul G. U.S. Geological Survey

Beyond USGS

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

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