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Darasun Deposit

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

Geologic information

Identification information

Deposit ID 10093888
MRDS ID W701745
Record type Site
Current site name Darasun Deposit

Geographic coordinates

Geographic coordinates: 113.99918, 51.66452 (WGS84)

Site location context

Political divisions (FIPS codes)

Russia(country)

Europe(continent)

Land(continent)

Geographic areas

Country
Russia

Comments on the location information

  • WITHIN THE EASTERN TRANSBAIKAL-PALEOZOIC FOLD REGION, GOLD-MOLYBDENUM METALLOGENIC BELT.

Commodities

Commodity Importance
Gold Primary
Silver Secondary
Lead Secondary
Zinc Critical Secondary
Copper Secondary
Molybdenum Secondary
Arsenic Critical Tertiary
Antimony Critical Tertiary
Bismuth Critical Tertiary
Mercury Tertiary

Materials information

Materials Type of material
Bismuthinite Ore
Boulangerite Ore
Bournonite Ore
Chalcopyrite Ore
Cinnabar Ore
Cubanite Ore
Electrum Ore
Galena Ore
Gold Ore
Jamesonite Ore
Marcasite Ore
Meneghinite Ore
Molybdenite Ore
Pyrite Ore
Pyrrhotite Ore
Silver Ore
Sphalerite Ore
Stibnite Ore
Tetrahedrite Ore
Anhydrite Gangue
Ankerite Gangue
Apatite Gangue
Aragonite Gangue
Barite Gangue
Calcite Gangue
Chlorite Gangue
Dolomite Gangue
Fluorite Gangue
Gypsum Gangue
Muscovite Gangue
Quartz Gangue
Rhodochrosite Gangue
Sericite Gangue
Siderite Gangue
Tourmaline Gangue

Alteration

  • (Local) Repeated Hydrothermal Alteration Including Chloritization, Sericitization, Carbonatization, Pyritization, Tourmalization And Listwanitization.

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
    Stratigraphic age (youngest) Late Jurassic
  • Host or associated Host
    Rock type Plutonic Rock > Granitoid > Syenite
  • Host or associated Host
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
  • Host or associated Host
    Rock type Plutonic Rock > Granitoid > Granite

Nearby scientific data

(1) 113.99918, 51.66452
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Extensive Disjunctive Faults Striking Ne To Nw
Type of structure Local
Structure description Brecciated, Banded, And Cockade Structures - A Result Of Repeated Crushing And Opening Of Ore Enclosed Joints; Less Frequent Crustification, Drusy, And Collomorphic Structures.

Ore body information

  • Name GLAVNAYA VEIN
    General form LODE, VEIN
    Thickness 1M
    Width 2000M

Controls for ore emplacement

  • Horizontal Displacement Of Blocks Along Curved, Steeply-Dipping Fractures. Gold Ore Has Been Localized In The Nodes Of Intersecting Faults.

Comments on the geologic information

  • THE COUNTRY ROCKS WERE INTRUDED IN SEVEN PHASES: GABBRO-PERIDOTITES, DIORITES, GRANODIORITES, PORPHYRY-LIKE GRANITES, SYENITES & QUARTZ SYENITES, LEUCOCRATIC GRANITES, AND GRANITE PORPHYRIES. THE FIRST SIX PHASES ARE CONSIDERED PRE-JURASSIC, AND THE LAST IS POST-JURASSIC. ORE BODIES ARE ASSOCIATED WITH DIKES OF GRANITE PORPHYRIES. MORE THAN 50 LODES AND HUNDRED OF VEINLETS ARE KNOWN. LODES STRIKING E-NE ARE OF COMPLEX COMPOSITION AND ECONOMICALLY IMPORTANT. VEINS STRIKING E-W CONSIST MAINLY OF ARSENOPYRITE, AND VEINS STRIKING NW-NS REPRESENT THE EARLIST FORMATION AND ARE NOT ECONOMICALLY SIGNIFICANT. THE ECONOMIC VEINS CAN BE TRACED ALONG STRIKE FOR HUNDREDS OF METERS. FOR EXAMPLE, THE GLAVNAYA VEIN EXTENDS FOR 2 KM AND RANGES FROM TENS OF CM TO 1 M IN THICKNESS. BANDED AND BRECCIATED ORES INDICATE REPEATED REOPENING OF ORE-BEARING FRACTURES AND SUPERPOSITION OF MINERALIZED STAGES. THE MINERALIZATION DEVELOPED IN SEVEN STAGES: 1. QUARTZ-TOURMALINE 2. QUARTZ-PYRITE 3.
  • PYRITE-ARSENOPYRITE 4. GALENA-SPHALERITE 5. PYRRHOTITE-TETRAHEDRITE-CHALCOPYRITE 6. QUARTZ-SULPHOANTIMONITE AND 7. CARBONATE. THE FIFTH AND THE SIXTH STAGES WERE THE MAIN ORE BEARING PHASES. DISTRIBUTION OF MINERAL ASSOCIATIONS IS CONCENTRICALLY ZONED (AS WELL AS OVERLAPPING) AROUND PIPE-LIKE BODIES OF PLAGIOGRANITE-PORPHYRIES AND ASSOCIATED EXPLOSION BRECCIAS. THE DEPOSIT FORMED OVER A WIDE TEMPERATURE RANGE, BUT THE MAIN AURIFEROUS STAGES WERE WITHIN THE INTERMEDIATE RANGE.

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Large
Significant No
Discoverer S. Smirnov

Reference information

Bibliographic references

  • Deposit

    INTERNATIONAL GEOLOGY REVIEW, 1968, ORE DEPOSITS, SEPT., V.10, NO.9, P.188-189.

  • Deposit

    SMIRNOV, V.I. 1977, ORE DEPOSITS OF THE USSR, V.III, P. 55-60.

General comments

Subject category Comment text
Deposit ABOUT 200 QUARTZ-SULFIDE VEINS ARE KNOWN IN THE AREA OF THE DARASUN DEPOSIT. E-NE OR E-W VEINS ARE THE MOST ECONOMICALLY SIGNIFICANT - RUNNING SEVERAL HUNDRED METERS IN LENGTH AND PRIMARILY DIPPING STEEPLY SOUTHWARD.

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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