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  3. Mineral Resource Data System (MRDS)

Kuranakh Deposit

Occurrence in Russia with commodities Gold, Silver, Copper, Lead, Zinc, Iron, Bismuth
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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. Links to other databases
  15. Bibliographic references
  16. General comments
  17. Reporter information

Geologic information

Identification information

Deposit ID 10085922
MRDS ID W701777
Record type Site
Current site name Kuranakh Deposit

Geographic coordinates

Geographic coordinates: 125.51518, 58.76456 (WGS84)

Site location context

Political divisions (FIPS codes)

Russia(country)

Europe(continent)

Land(continent)

Geographic areas

Country
Russia

Comments on the location information

  • NORTHERN SLOPE OF THE ALDAN SHIELD

Commodities

Commodity Importance
Gold Primary
Silver Primary
Copper Secondary
Lead Secondary
Zinc Critical Secondary
Iron Secondary
Bismuth Critical Tertiary

Materials information

Materials Type of material
Bismuth Ore
Chalcopyrite Ore
Galena Ore
Gold Ore
Pyrite Ore
Pyrrhotite Ore
Silver Ore
Sphalerite Ore
Chalcedony Gangue
Clay Gangue
Quartz Gangue

Alteration

  • (Local) Oxidation And Leaching

Analytical data

Result TWO TYPES OF GOLD OCCURRENCES 1) MINUTE BRITTLE GOLD PARTICLES < 1.5MM 2) RARE FLAKES OF FINE TO MEDIUM DIMENSION. FINENESS IS 900-923.

Host and associated rocks

  • Host or associated Associated
    Rock type Metamorphic Rock > Gneiss
    Stratigraphic age (youngest) Neoarchean
  • Host or associated Associated
    Rock type Plutonic Rock > Granitoid > Granite
  • Host or associated Host
    Rock type Plutonic Rock > Granitoid > Syenite
  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Sandstone
  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Limestone
    Rock unit name Verkhne-Ungely And Kutorgina Groups;Yukhta Group;
    Rock description Verkhne-Ungely And Kutorgina Groups;Yukhta Group;
  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Dolomite
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Trachyte
  • Host or associated Host
    Rock type Plutonic Rock
  • Host or associated Host
    Rock type Plutonic Rock > Porphyry > Lamprophyre

Nearby scientific data

(1) 125.51518, 58.76456
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Economic information

Geologic structures

Type of structure Local
Structure description Zone Of Nw Striking Faults.
Type of structure Regional
Structure description Kuranakh Syneclise

Ore body information

  • General form PINCH AND SWELL
    Thickness 10M
  • General form PINCH AND SWELL
  • General form PINCH AND SWELL

Controls for ore emplacement

  • Stratigraphic Contact Between Cambrian And Jurassic Sediments, As Well As Contacts Of Kersantite Dykes.

Comments on the geologic information

  • GOLD MINERALIZATION IS LOCATED IN NW ELONGATED METASOMATITES OF QUARTZ AND K-FELDSPAR COMPOSITION OCCURRING IN SANDSTONE AND CARBONATE ROCKS. TWO TYPES OF METASOMATITES HAVE BEEN IDENTIFIED: 1) ESSENTIALLY K-FELDSPAR, CONSISTING OF ADULARIA WITH A SMALL AMOUNT OF QUARTZ 2) ESSENTIALLY QUARTZOSE VARIETIES, IN WHICH THE QUARTZ HAS REPLACED THE EARLIER-FORMED ADULARIA. THE PRINCIPAL AURIFEROUS MINERAL IS A "RICE-LIKE" QUARTZ WHICH HAS REPLACED A FINER-GRAINED CHALCEDONIC QUARTZ. MOST OF THE ORE IS SITUATED IN AN OXIDIZED ZONE, AND A PORTION OF THE GOLD HAS BEEN REPRECIPITATED UNDER SUPERGENE CONDITIONS. INTENSE KARST FORMATION HAS RESULTED IN COLLAPSE OF AURIFEROUS METASOMATITES INTO KARST OPENINGS.

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Large
Significant No

Reference information

Bibliographic references

  • Deposit

    SMIRNOV, V.I., 1977, ORE DEPOSITS OF THE USSR, V.III, P.24-27

General comments

Subject category Comment text
Deposit NEAR SURFACE GOLD DEPOSIT (IN ZONE OF PLATFORM ACTIVATION), OFTEN LOCATED ALONG KERSANTITE DIKES. THE ORE BODIES COVER A SIGNIFICANT DISTANCE AND VARY WIDELY IN THICKNESS LYING BELOW A COVER OF JURASSIC FORMATIONS AND SOMETIMES OCCURRING AS AN OUTCROP.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUL-1990 Paidakovich, Matthew E. U.S. Geological Survey
Updater 01-JUL-1993 Moyer, Lorre A. (Marcus, S.M.) U.S. Geological Survey

Beyond USGS

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

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