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Cape Blanco

Past Producer in Curry county in Oregon, United States with commodities Gold, Platinum, Osmium, Chromium
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Geologic information

Identification information

Deposit ID 10033270
MRDS ID M015574
Record type Site
Current site name Cape Blanco
Alternate or previous names Pacific Coast Mining and Refining Co.
Related records 10274274

Geographic coordinates

Geographic coordinates: -124.5323, 42.80675 (WGS84)
Elevation 2
Location accuracy 100(meters)
Relative position FROM CAPE BLANCO TO PORT ORFORD, Accurate Along Beach, Accurate Along Beach, Accurate Along Beach
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Geographic areas

Country State County
United States Oregon Curry

Public Land Survey System information

Meridian Township Range Section Fraction State
Willamette 032S;032S 016W;015W 01,02,12;18,19,30,31,32 Oregon

Comments on the location information

  • A SMALL PART OF BEACH NEAR PORT ORFORD IS STATE LAND. 8 MI STRIP OF BEACH. LOCATION GIVEN IS FOR MOUTH OF ELK RIVER

Commodities

Commodity Importance
Gold Primary
Platinum Primary
Osmium Primary
Chromium Tertiary

Comments on the commodity information

  • PT AND GOLD FORM SMALL THIN SCALES

Materials information

Materials Type of material
Chromite Ore
Gold Ore
Platinum Ore

Analytical data

Result 215 FT CHANNEL SAMPLE ASSAYED 12.18% CR2O3 (GRIGGS, 1944). PT ESTIMATED AT 10-30% OF GOLD AS WASHED OUT. GOLD FINENESS 860

Mineral occurrence model information

Model code 119
USGS model code 39a
BC deposit profile C01. C02
Deposit model name Placer Au-PGE
Mark3 model number 54

Host and associated rocks

  • Host or associated Host
    Rock type Unconsolidated Deposit > Sand and Gravel
    Stratigraphic age (youngest) Holocene

Nearby scientific data

(1) -124.5323, 42.80675
ListMap

Ore body information

  • General form SHORELINE DEPOSITS
    Thickness 0.76M
    Width 18.29M
    Length 1219.2M

Controls for ore emplacement

  • Wave Action

Comments on the geologic information

  • STRIP OF BEACH COVERED WITH A VENEER OF ALTERNATING LAYERS OF BLACK AND GRAY SAND. PT AND AU WITHIN THE BEACH SANDS AT AND NEAR POINT ORFORD.

Economic information

Economic information about the deposit and operations

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

Mining district

District name Beach Area

Land status

Ownership category Private

Ownership information

  • Type Operator
    Owner Pacific Coast Mining And Refining Co.
    First year 1940
  • Type Owner
    Owner Ed Frances, And Thomas Hughes
    First year 1940

Comments on the production information

  • REPORTEDLY WORKED SPORADICALLY FROM 1853-1938. REMAINDER OF PRODUCTION RECORDS WERE DESTROYED IN A FIRE. SMALL BYPRODUCT PGE PRODUCTION

Workings at the site

  • Type of workings Unknown
    Overall length 3620.93M
    Overall width 402.33M

Comments on the workings information

  • 397 PATENTED ACRES

Comments on development

  • WORKED INTERMITTENTLY FROM 1853 TO 1938

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS M015574
U.S. Bureau of Mines Minerals Availability System MAS 0410150130

Bibliographic references

  • Deposit

    GRIGGS, A.B., 1946, CHROMITE-BEARING SANDS OF THE SOUTHERN PART OF THE COAST OF OREGON: U.S. GEOLOGICAL SURVEY BULLETIN 945-E, P. 147.

  • Deposit

    RAMP, LEN, SCHLICKER, H.G., AND GRAY, J.J., 1977, GEOLOGY, MINERAL RESOURCES, AND ROCK MATERIAL OF CURRY COUNTY, OREGON: OREGON DEPARTMENT OF GEOLOGY AND MINERAL INDUSTRIES BULLETIN 93, P. 29.

  • Deposit

    BLAKE, W.P., 1854, GOLD AND PLATINUM OF CAPE BLANCO: AMERICAN JOURNAL OF SCIENCE, 2D SER., V. 18, P. 156.

  • Deposit

    OREGON DEPARTMENT OF GEOLOGY AND MINERAL INDUSTRIES, 1940, OREGON METAL MINES HANDBOOK, SOUTHWESTERN OREGON--COOS, CURRY, AND DOUGLAS COUNTIES: OREGON DEPARTMENT OF GEOLOGY AND MINERAL INDUSTRIES BULLETIN 14-C, V. 1, P. 81.

  • Production

    RAMP (1977)

General comments

Subject category Comment text
Deposit ORE ZONE AVERAGES 0.5 FT THICK
Deposit RECORD M046995 HAS BEEN MERGED AND DELETED.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JAN-79 Bradley, Robin (Walker, George W.) U.S. Geological Survey
Updater 01-APR-81 Ferns, Mark L. (Brooks, Howard C.) Oregon Department of Geology and Mineral Industries
Updater 01-MAY-89 Peterson, Jocelyn A. U.S. Geological Survey