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  3. Mineral Resource Data System (MRDS)

Wake

Past Producer in Okayama, Japan with commodity Mercury
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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. Alteration
  8. Host and associated rocks
  9. Nearby scientific data
  10. Geologic structures
  11. Ore body information
  12. Controls for ore emplacement
  13. Economic information about the deposit and operations
  14. Mining district
  15. Links to other databases
  16. Bibliographic references
  17. General comments
  18. Reporter information

Geologic information

Identification information

Deposit ID 10040047
MRDS ID M053062
Record type Site
Current site name Wake

Geographic coordinates

Geographic coordinates: 134.18217, 34.79868 (WGS84)
Elevation 300
Relative position APPROXIMATELY 5 KM FROM WAKE STATION

Site location context

Political divisions (FIPS codes)

Okayama(province)

Japan(country)

Asia(continent)

Land(continent)

Geographic areas

Country State
Japan Okayama
Japan Okayama

Commodities

Commodity Importance
Mercury Secondary

Materials information

Materials Type of material
Cinnabar Ore
Chlorite Gangue
Kaolin Gangue
Marcasite Gangue
Pyrite Gangue
Pyrophyllite Gangue
Quartz Gangue

Alteration

  • (Local) Silicification, Striped Argillization (Pyrophyllite)

Host and associated rocks

  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Pyroclastic Rock > Tuff
    Stratigraphic age (youngest) Late Cretaceous
    Stratigraphic age (youngest) Late Cretaceous
  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Rhyolite
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Rhyolite

Nearby scientific data

(1) 134.18217, 34.79868
ListMap

Economic information

Geologic structures

Type of structure Local
Structure description Ne-Sw Line Of Structural Weakness Gentle Folding; Faults

Ore body information

  • General form LENSOID OR BLOCK
    Thickness 0.3M

Controls for ore emplacement

  • A Secondary Fault Of Principal Fault (N50 Deg E, 50 Deg N) & Fractures Hg Dissemination Is Marked In Areas Of Gentle Folding

Comments on the geologic information

  • GEOL.DESC: HG FOUND EXCLUSIVELY WITHIN DARK, RATHER THAN LIGHT, CLAY BELTS

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Significant No
Production years 1942 - 1953 +?

Mining district

District name Wake Pyrophyllite Mine

Comments on the production information

  • ACCORDING TO TAKASHIMA, THE GRADE OF HG IN ZONES OF HIGH GRADE IS HG = SEVERAL PERCENT.

Reference information

Bibliographic references

  • Deposit

    TAKASHIMA, K., 1956 , "MERCURY DEPOSIT OF WAKE PYROPHYLLITE MINE, OKAYANA" BULL GEOL SUR JAP VOL 7 NO. 5 P. 219 - 222

  • Deposit

    HORI, S., 1953 , "MERCURY DEPOSITS OF JAPAN," GEOL SUR JAP REP. NO 154 P. 112

General comments

Subject category Comment text
Deposit CINNABAR EXISTS WHERE THERE ARE NO CARBONACEOUS ROCKS. NATIVE MERCURY FORMS DROPLET-LIKE FORM IN THE CRACKS WITHIN FAULT BRECCIA, AND DISSEMINATIONS IN THIN FRACTURES WITHIN SILICEOUS ROCKS.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-AUG-1978 Roddy, Stephen J. U.S. Geological Survey

Beyond USGS

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

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