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Raven Mine

Past Producer in Sanders county in Montana, United States with commodities Copper, Silver, Gold, Lead, Zinc, Antimony, Bismuth
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Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Public Land Survey System information
  6. Commodities
  7. Materials information
  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. Land status
  16. Ownership information
  17. Production statistics
  18. Workings at the site
  19. Links to other databases
  20. Bibliographic references
  21. General comments
  22. Reporter information

Geologic information

Identification information

Deposit ID 10010262
MRDS ID D003852
Record type Site
Current site name Raven Mine
Alternate or previous names Copper Mask Mine

Geographic coordinates

Geographic coordinates: -115.19461, 47.61737 (WGS84)
Elevation 914
Relative position 3 1/4 MI N OF US HIGHWAY 10A

Site location context

Political divisions (FIPS codes)

Sanders(county)

Montana(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Eddy Mountain(quadrangle 1:24,000 scale)

Thompson Falls(quadrangle 1:100,000 scale)

Wallace(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Lower Clark Fork(hydrologic unit)

Pend Oreille(hydrologic accounting unit)

Kootenai-Pend Oreille-Spokane(hydrologic subregion)

Pacific Northwest(hydrologic region)

Federal lands

Lolo National Forest(National Forest)

National Forest FS(Type of land area)

FS(Federal land areas administered by FS)

Geographic areas

Country State County
United States Montana Sanders

Public Land Survey System information

Meridian Township Range Section Fraction State
Montana Principal 021N;022N 028W;028W 04;33 Montana

Comments on the location information

  • ON NW SLOPE OF THOMPSON RIVER CANYON

Commodities

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

Materials information

Materials Type of material
Bornite Ore
Chalcopyrite Ore
Chrysocolla Ore
Covellite Ore
Enargite Ore
Malachite Ore
Tenorite Ore
Chalcocite Gangue
Pyrite Gangue
Quartz Gangue

Analytical data

Result RICHEST 1961 SAMPLE ASSAYED 0.0010 OZ/TON AU, 199.20 OZ/TON AG, 31.80 % CU, 0.5 % PB, 6.2 % ZN, 6.87 % SB & 0.02 % BI

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Metasedimentary Rock > Quartzite
    Rock unit name Ravalli Group
    Rock description Ravalli Group
    Stratigraphic age (youngest) Neoproterozoic
    Stratigraphic age (youngest) Neoproterozoic

Nearby scientific data

(1) -115.19461, 47.61737
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Nw Trending Anticline

Ore body information

  • General form POD/LENS
    Strike N 64 DEG W
    Dip 67 DEG SW
    Width 0.71M

Controls for ore emplacement

  • Fault Zone

Comments on the geologic information

  • BEDDING OF WALL ROCKS STRIKES NW AND DIPS AT LOW ANGLES TO THE SE. TETRAHEDRITE IS RIMMED AND VEINED BY SECONDARY CHALCOCITE AND COVELLITE. SMALL GRAINS OF OTHER MINERALS ARE INCLUDED IN THE LARGER TETRAHEDRITE GRAINS.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1880

Mining district

District name Thompson River District

Land status

Ownership category National Forest

Ownership information

  • Type Operator
    Owner Knute Kirkeburg
  • Type Owner
    Owner Raven Mining Co.
    Home office Austin, Mt.

Production statistics

  • Year 1919
    Material ORE
    Accuracy Accurate
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Copper Copper 24wt-pct
    Major Ore Silver Silver 2171g/mt
  • Year 1920
    Accuracy Accurate
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Copper Copper 23wt-pct
    Major Ore Silver Silver 2008g/mt
  • Year 1923
    Accuracy Accurate
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Copper Copper 24wt-pct
    Major Ore Silver Silver 1849g/mt
  • Year 1925
    Accuracy Accurate
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Copper Copper 22wt-pct
    Major Ore Silver Silver 1615g/mt
  • Year 1931
    Accuracy Accurate
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Minor Ore Gold Gold 1g/mt
    Major Ore Copper Copper 19wt-pct
    Major Ore Silver Silver 1821g/mt
  • Year 1934
    Period 1919 - 1934
    Accuracy Accurate
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Copper Copper 20wt-pct
    Major Ore Silver Silver 67wt-pct
  • Year 1934
    Accuracy Accurate
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Silver Silver 1863g/mt
    Major Ore Copper Copper 18wt-pct

Comments on the production information

  • PRODUCTION WAS REINITIATED IN 1958 AND CONTINUED AT LEAST THROUGH 1964 , BUT NO PRODUCTION FIGURES ARE AVAILABLE FOR THIS TIME PERIOD.

Workings at the site

  • Type of workings Underground
    Length 460.25M

Comments on the workings information

  • FOUR ADITS WHICH FROM BOTTOM TO TOP ARE 600 , 290 , 470 AND 150 FT LONG. AS OF 1961 ALL FOUR ADITS WERE ACCESSIBLE EXCEPT FOR A PORTION WITHIN THE LOWEST ADIT WHICH WAS CAVED. 1935 PUBLICATION MENTIONS 2000 FT OF DRIFTS AND 200 FT OF RAISES.

Comments on development

  • PRIOR TO 1959 NAME OF MINE WAS COPPER MASK. AS OF 1934 , MINE CONSISTED OF 9 UNPATENTED CLAIMS. MINE INACTIVE AS OF 1977 , BUT SOME DEVELOPMENT WORK DID OCCUR IN THE MID - 1970'S. ; ECON.COM: DURING 1961 , OPERATORS WERE ERECTING A CONCENTRATING MILL

Reference information

Bibliographic references

  • Analytical Data

    SRC.REF: CROWLEY, F. A., 1963 : MONTANA BUREAU OF MINES AND GEOLOGY BULL. 34 , P. 44 .

  • Deposit

    CROWLEY, F. A., 1963 , MINES AND MINERAL DEPOSITS (EXCEPT FUELS) SANDERS COUNTY, MONTANA: MONTANA BUREAU OF MINES AND GEOLOGY BULL. 34 , P. 43 .

  • Deposit

    GEACH, R. D., 1965 , DIRECTORY OF MINING ENTERPRISES FOR 1964 : MONTANA BUREAU OF MINES AND GEOLOGY BULL. 46 , P. 31 .

  • Deposit

    GILBERT, F. C., 1935 , DIRECTORY OF MONTANA MINING PROPERTIES: MONTANA BUREAU OF MINES AND GEOLOGY MEM. 15 , P. 69 .

  • Deposit

    LAWSON, D. C., 1978 , DIRECTORY OF MINING ENTERPRISES FOR 1977 : MONTANA BUREAU OF MINES AND GEOLOGY BULL. 107 , P. 20 .

  • Production

    CROWLEY, F. A., 1963 : MONTANA BUREAU OF MINES AND GEOLOGY, BULL 34 , P. 43 .

General comments

Subject category Comment text
Deposit MINERALIZATION IS HIGHLY IRREGULAR. SOME PORTIONS OF THE VEINS ARE HIGHLY MINERALIZED, OTHER PORTIONS ARE BARREN OF SULFIDES. MINERALIZATION IS MOST INTENSE WITHIN THE HOST QUARTZITIC UPPER STRATA AND IS LACKING IN THE THIN BEDDED ARGILLACEOUS STRATA.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAY-1979 Rojstaczer, Stuart A. U.S. Geological Survey

Beyond USGS

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

External references

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