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Santiam Copper Group

Producer in Marion county in Oregon, United States with commodities Copper, Silver, Gold, Zinc, 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. Ore body information
  11. Economic information about the deposit and operations
  12. Mining district
  13. Land status
  14. Production statistics
  15. Links to other databases
  16. Bibliographic references
  17. General comments
  18. Reporter information

Geologic information

Identification information

Deposit ID 10036474
MRDS ID M025288
Record type Site
Current site name Santiam Copper Group
Alternate or previous names Lotz & Larson, Rainbow, Northwest Copper Co., Low
Related records 10274167

Geographic coordinates

Geographic coordinates: -122.252, 44.85787 (WGS84)

Site location context

Political divisions (FIPS codes)

Marion(county)

Oregon(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Elkhorn(quadrangle 1:24,000 scale)

North Santiam River(quadrangle 1:100,000 scale)

Salem(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

North Santiam(hydrologic unit)

Willamette(hydrologic accounting unit)

Willamette(hydrologic subregion)

Pacific Northwest(hydrologic region)

Federal lands

Willamette 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 Oregon Marion

Public Land Survey System information

Meridian Township Range Section Fraction State
Willamette 008S 005E 19 S Oregon

Commodities

Commodity Importance
Copper Primary
Silver Primary
Gold Primary
Zinc Critical Tertiary
Bismuth Critical Tertiary

Materials information

Materials Type of material
Chalcopyrite Ore
Pyrite Ore
Sphalerite Ore
Quartz Gangue
Sericite Gangue
Specularite Gangue

Analytical data

Result ORE AVERAGED 2-4.5 % CU
Result 0.75-1.22 OZ/TON AG
Result TRACE AU

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
    Stratigraphic age (youngest) Miocene
    Stratigraphic age (youngest) Miocene
    Stratigraphic age (youngest) Miocene
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite
    Rock unit name Sardine
    Rock description Sardine

Nearby scientific data

(1) -122.252, 44.85787
ListMap

Economic information

Ore body information

  • Strike N 43 W
    Dip 50-80 NE
    Length 365.76M
    Width 1.83M

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name North Santiam

Land status

Ownership category Private
Area name Willamette National Forest

Production statistics

  • Year 1941
    Period 1923-1941
    Material CU
    Accuracy Accurate
    Description Cp_Grade: ^10 % Cu
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Copper Copper 10wt-pct
  • Year 1941
    Period 1923-1941
    Material AG
    Accuracy Estimate
    Description Cp_Grade: ^3.0 Oz/Ton Ag
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Silver Silver 85g/mt
  • Year 1941
    Period 1923-1941
    Material AU
    Accuracy Estimate
    Description Cp_Grade: ^0.03 Oz/Ton Au
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Gold Gold 1g/mt

Comments on the workings information

  • OVER 1400 FEET; MOSTLY ON THE MINNIE (NORTHWESTERN) VEIN

Comments on development

  • AREA IS PRESENTLY BEING EXPLORED FOR PORPHYRY COPPER (1981)

Reference information

Bibliographic references

  • Deposit

    BROOKS, H.C. AND RAMP, L., 1968, GOLD AND SILVER IN OREGON; ODGMI BULL. 61, P. 291

  • Deposit

    OREGON METAL MINES HANDBOOK, 1951, ODGMI BULL. 14-D, P. 128

  • Deposit

    CALLAGHAN, E. AND BUDDINGTON, A.F., 1938, METALLIFEROUS MINERAL DEPOSITS OF THE CASCADE RANGE IN OREGON; USGS BULL. 893, P. 95

  • Deposit

    POWER, S.G. AND FIELD, C.W., 1981, THE GEOLOGY, MINERALIZATION AND METALLIZATION OF MINING DISTRICTS IN THE WESTERN CASCADES OF OREGON AND SOUTHERN WASHINGTON; ODGMI SPEC. PAPER.

General comments

Subject category Comment text
Deposit BRANCHING VEIN WITH FOUR NARROW ORE SHOOTS. LARGEST SHOOT MEASURED 200 FEET IN LENGTH

Reporter information

Type Date Name Affiliation Comment
Reporter 01-APR-1981 Ferns, Mark L. (Brooks, Howard C.) Oregon Department of Geology and Mineral Industries
Updater 01-AUG-1993 Gray, Jerry J. Oregon Department of Geology and Mineral Industries

Beyond USGS

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

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