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Toyoha Zn, Pb, Pyrite Mine

Producer in Hokkaido, Japan with commodities Zinc, Lead, Copper, Sulfur-Pyrite
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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. Ownership information
  14. Production statistics
  15. Links to other databases
  16. Bibliographic references
  17. General comments
  18. Reporter information

Geologic information

Identification information

Deposit ID 10089348
MRDS ID W018914
Record type Site
Current site name Toyoha Zn, Pb, Pyrite Mine

Geographic coordinates

Geographic coordinates: 141.08187, 42.9817 (WGS84)

Site location context

Political divisions (FIPS codes)

Hokkaido(province)

Japan(country)

Asia(continent)

Land(continent)

Geographic areas

Country State
Japan Hokkaido

Commodities

Commodity Importance
Zinc Critical Primary
Lead Primary
Copper Tertiary
Sulfur-Pyrite Tertiary

Materials information

Materials Type of material
Chalcopyrite Ore
Galena Ore
Pyrite Ore
Sphalerite Ore
Ankerite Gangue
Calcite Gangue
Chlorite Gangue
Dolomite Gangue
Quartz Gangue
Rhodochrosite Gangue

Host and associated rocks

  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Pyroclastic Rock > Tuff
    Rock unit name Nagato Formation Tuff, Tuff Breccia
    Rock description Nagato Formation Tuff, Tuff Breccia
    Stratigraphic age (youngest) Miocene
    Stratigraphic age (youngest) Miocene
    Stratigraphic age (youngest) Miocene
  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Pyroclastic Rock > Volcanic Breccia (Agglomerate)
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Pyroclastic Rock > Tuff
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Pyroclastic Rock > Volcanic Breccia (Agglomerate)

Nearby scientific data

(1) 141.08187, 42.9817
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Green Tuff Region

Ore body information

  • General form VEINS

Controls for ore emplacement

  • Joint Control

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Significant No

Ownership information

  • Type Operator
    Owner Toyoha Mining Co. Ltd.
  • Type Owner
    Owner Toyoha - Nippon

Production statistics

  • Year 1974
    Material ORE-ZN-PB
    Accuracy Accurate
    Description Ap_Grade: ^14. % S, 7.28 % Zn, 2.89 % Pb, 124 G/Mt Ag
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Ore Sulfur Sulfur 14wt-pct
    Ore Silver Silver 124g/mt
    Ore Lead Lead 3wt-pct
    Ore Zinc Zinc 7wt-pct

Comments on the production information

  • ITEM ONE BASED ON 50,000 MTPM

Comments on development

  • MINE WAS OPERATING PRIOR TO 1877. ; MILL.CAP: 720 MET ; ECON.COM: 60,000 MTPM (2700 MTPD) MILL

Reference information

Bibliographic references

General comments

Subject category Comment text
Deposit TAJIMA VEIN 2 KM LONG, 300 M WIDE DOWNDIP, 3 M. THICK AVERAGE. SOYA VEIN IS 2 KM X 300 M X 1.5 M.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JAN-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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