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Horokanai Placer

Past Producer in Hokkaido, Japan with commodities Mercury, Chromium, Iridium, Osmium
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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. Production statistics
  15. Reserves and resources
  16. Links to other databases
  17. Bibliographic references
  18. Reporter information

Geologic information

Identification information

Deposit ID 10098448
MRDS ID M053117
Record type Site
Current site name Horokanai Placer

Geographic coordinates

Geographic coordinates: 142.08182, 43.98168 (WGS84)
Relative position 3 KM FROM HOROKANAI STATION, FUKANA RR LINE

Site location context

Political divisions (FIPS codes)

Hokkaido(province)

Japan(country)

Asia(continent)

Land(continent)

Geographic areas

Country State
Japan Hokkaido
Japan Hokkaido
Japan Hokkaido

Commodities

Commodity Importance
Mercury Secondary
Chromium Critical Tertiary
Iridium Critical Tertiary
Osmium Tertiary

Materials information

Materials Type of material
Cinnabar Ore
Chromite Gangue
Iridosmine Gangue
Limonite Gangue
Magnetite Gangue

Alteration

  • (Local) Argillization Of Plagioclase

Host and associated rocks

  • Host or associated Associated
    Rock type Metamorphic Rock > Serpentinite
    Stratigraphic age (youngest) Holocene
  • Host or associated Associated
    Rock type Plutonic Rock > Granitoid > Granite
  • Host or associated Host
    Rock type Unconsolidated Deposit > Clay, Mud
  • Host or associated Host
    Rock type Unconsolidated Deposit > Sand and Gravel

Nearby scientific data

(1) 142.08182, 43.98168
ListMap

Economic information

Geologic structures

Type of structure Local
Structure description Stock Of Trondhjemite (Diam Greater Than 1 Km)

Ore body information

  • Thickness 0.1M

Controls for ore emplacement

  • Layer Of Cinnabar Approx. 10 Cm Thick At Bottom Of Quaternary Unit Of Terrace Clays, Sand Pebbles Approx 4-9 M Thick. Located About 20 M From Present Course Of Uryu River.

Comments on the geologic information

  • GEOL.DESC: GRAINS TO PEBBLES OF CINNABAR (MOSTLY RICE-SOYBEAN-SIZED); FLAT, ANGULAR, UNROUNDED

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Significant No
Production years 1943 - 1944

Production statistics

  • Year 1953
    Period 1953
    Material HG
    Accuracy Accurate
    Description Cp_Grade: ^Hg Greater Than Or Equal To 3 % (Highest)
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Mercury Mercury 3wt-pct

Reserves and resources

  • Type In-situ
    Estimate year 1953
    Total resources 3600000kg commodity
    Commodity Subtype Grade units Group Importance Year
    Mercury Hg 0.4 wt-pct Mercury Minor 1953

Reference information

Bibliographic references

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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