Shakani Zn - Pb - Cu Mine

Producer in Akita, Japan with commodities Zinc, Copper, Lead, Sulfur-Pyrite, Silver, Gold

Geologic information

Identification information

Deposit ID 10073097
MRDS ID W018913
Record type Site
Current site name Shakani Zn - Pb - Cu Mine

Geographic coordinates

Geographic coordinates: 140.56528, 40.29847 (WGS84)
Relative position ON NORTHERN OUTSKIRTS OF OHDATE CITY.
(click for info)

Geographic areas

Country State
Japan Akita

Commodities

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

Materials information

Materials Type of material
Argentite Ore
Bornite Ore
Chalcocite Ore
Chalcopyrite Ore
Digenite Ore
Enargite Ore
Galena Ore
Gold Ore
Hematite Ore
Marcasite Ore
Polybasite Ore
Pyrite Ore
Sphalerite Ore
Anhydrite Gangue
Gypsum Gangue
Quartz Gangue
Sericite Gangue

Alteration

  • (Local) Sericite - Chlorite Facies

Host and associated rocks

  • Host or associated Associated
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Mudstone
    Stratigraphic age (youngest) Miocene
    Stratigraphic age (youngest) Miocene
  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Pyroclastic Rock > Tuff
    Rock unit name Shakani (Okuzu) Formation Pyroclastics, Mudstone, Rhyolite;Sainokami (Otaki) Formation Pyroclastics, Mudstone, Diabase;Other Green Tuff Horizons
    Rock description Shakani (Okuzu) Formation Pyroclastics, Mudstone, Rhyolite;Sainokami (Otaki) Formation Pyroclastics, Mudstone, Diabase;Other Green Tuff Horizons
  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Pyroclastic Rock > Volcanic Breccia (Agglomerate)
  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Rhyolite
  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Mudstone
  • 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)
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Rhyolite

Nearby scientific data

(1) 140.56528, 40.29847

Geologic structures

Type of structure Regional
Structure description Hokuroku Basin

Ore body information

  • General form IRREGULAR TO CONCORDANT BEDS

Economic information

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Deposit size Medium
Significant No
Discovery year 1962
Discoverer Nippon Mining Co.
Discovery method Ore-Mineral In Place
Year of first production 1965

Mining district

District name Hokuroku Basin Area

Ownership information

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

Production statistics

  • Year 1973
    Period 1965-1973
    Material ORE
    Accuracy Accurate
    Description Cp_Grade: ^2.15 % Cu, 3.3 % Zn, 0.9 % Pb, 24.5 % S
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Copper Copper 2wt-pct
    Major Ore Lead Lead 1wt-pct
    Ore Sulfur Sulfur 25wt-pct
    Major Ore Zinc Zinc 3wt-pct

Comments on the production information

  • ITEM 1 - 35,000 MTPM X 12 MOS.

Reserves and resources

  • Type In-situ
    Estimate year 1974
    Total resources 8,200,000,000mt ore
    Commodity Subtype Grade units Group Importance Year
    Zinc Zn 2.79 wt-pct Zinc Major 1974
    Copper Cu 1.36 wt-pct Copper Major 1974
    Lead Pb 0.71 wt-pct Lead Major 1974
    Sulfur-Pyrite S_P 25.48 wt-pct Sulfur Minor 1974
  • Type In-situ
    Estimate year 1974
    Total resources 82,000,000mt ore
    Commodity Subtype Grade units Group Importance Year
    Zinc Zn 2.79 wt-pct Zinc Major 1974
    Copper Cu 1.36 wt-pct Copper Major 1974
    Lead Pb 0.71 wt-pct Lead Major 1974
    Sulfur-Pyrite S_P 25.48 wt-pct Sulfur Minor 1974

Comments on the reserve resource information

  • ITEM 1 - FOR SHAKANI NO. 4, 5, 7, 8, 11. NO 1, 3 WERE CLOSE TO EXHAUSTION IN 1974. RESERVE EST. BASED ON 10 MIL. T. TOTAL MINUS 1,821,465 T. PROD. 1965 - 1973.
  • ITEM 1 - FOR SHAKANI NO. 4, 5, 7, 8, 11. NO. 1, 3 WERE CLOSE TO EXHAUSTION IN 1974. RESERVE EST. BASED ON 10 MIL. T. TOTAL MINUS 1,821,465 T. PROD. 1965 - 1973

Comments on the workings information

  • IN 1974, NO. 1, 3 OREBODIES APPROACHING EXHAUSTION. NO 4, 8 WERE MOST ACTIVELY BEING MINED. NO. 5, 11 UNDER DEVELOPMENT.

Comments on development

  • MILL.CAP: 420 MET TONS ; ECON.YEAR: TONS ; ECON.COM: 35,000 MTPM, 1300 MTPD MILL

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS W018913

Bibliographic references

  • Deposit

    OHTAGAKI, T. ET. AL., 1974, GEOLOGY OF THE SHAKANAI MINE, AKITA PREFECTURE; JAP. SOC. MINING GEOLOGISTS SPEC. ISS. NO 6 P 131 - 139

  • Deposit

    LAMBERT I. B., SATO, T., 1974, THE KUROKO AND ASSOCIATED ORE DEPOSITS OF JAPAN: A REVIEW OF THEIR FEATURES AND METALLOGENESIS; ECON. GEOL. V 69 P. 1215 - 1236

  • Deposit

    SATO, JUICHI, 1974, ORES AND ORE MINERALS FROM THE SHAKANAI MINE AKITA PREFECTURE, JAPAN; JAP. SOC. MINING GEOLOGISTS SPEC. ISS. NO. 6 P. 323 - 335

  • Production

    OHTAGAKI, T. ET AL, 1974, JAP. SOC. MIN. GEOL. NO. 6 P. 131.

  • Reserve-Resource

    LAMBERT AND SATO, 1974, ECON. GEOL. V 69 P 1216

General comments

Subject category Comment text
Deposit NO. 1 - 300 X 150 X 12 M. NO. 3 - 400 X 120 X 6 M. NO. 4 - 400 X 300 X 40 M. NO 5 - 350 X 70 X 13 M. NO. 7 - 350 X 250 X 15 M. NO. 8 - 430 X 170 X 40 M. NO. 11 - 400 X 110 X 10 M

Reporter information

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