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Chickamin Mine

Occurrence in Coos county in Oregon, United States with commodities Gold, Platinum, Chromium
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Geologic information

Identification information

Deposit ID 10086662
MRDS ID M013520
Record type Site
Current site name Chickamin Mine
Alternate or previous names Mathews M.J. Property
Related records 10200738, 10201037

Geographic coordinates

Geographic coordinates: -124.30591, 43.28313 (WGS84)
Elevation 27
Relative position ABOUT 4 MI SOUTH OF CHARLESTON
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Geographic areas

Country State County
United States Oregon Coos

Public Land Survey System information

Meridian Township Range Section Fraction State
Willamette 026S 014W 25,26 SE4 (25) Oregon

Comments on the location information

  • AT SOUTH END OF SOUTH SLOUGH (MAY ALSO BE CALLED BROWN SLOUGH) NEAR JOHN B CREEK. LOCATION IS PRESUMED ACCURATE WITHIN TERRACE; NO MINE IS SHOWN ON TOPO MAP.

Commodities

Commodity Importance
Gold Primary
Platinum Tertiary
Chromium Tertiary

Materials information

Materials Type of material
Chromite Ore
Gold Ore
Garnet Gangue
Ilmenite Gangue
Magnetite Gangue
Quartz Gangue

Analytical data

Result ASSAYS INDICATE $1.00-1.55/TON AU + PT (1939). ONE SAMPLE CONTAINED 85% HEAVY MINERALS WITH 20% MAGNETITE, 65% CHROMITE, PLUS ILMENITE AND GARNET. TWO SAMPLES ASSAYED 0.02 OZ/TON (690 PPB) AU+PT
Result AND 0.14 OZ/TON (4.8 PPM) AU, 0.09 OZ/TON (3 PPM) PT FROM 1/2 POUND CONCENTRATE FROM 8 LB SAMPLE
Result THIS RECALCULATES TO 43 PPB AU+PT
Result 300 PPB AU, 190 PPB PT

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) -124.30591, 43.28313
ListMap

Ore body information

  • General form TABULAR
    Thickness 3.05M
    Depth to top 15.24M
    Length 12.19M

Controls for ore emplacement

  • Wave Action

Comments on the geologic information

  • GEOL.DESC: DEPOSIT IS RATHER COMPACT, PARTLY CEMENTED BY IRON OXIDES AND IS REGARDED AS OFFSHORE SEDIMENTS.

Economic information

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Beach Area

Land status

Ownership category Private

Ownership information

  • Type Owner
    Owner W. H. Wann

Comments on the production information

  • PRODUCTION NOT RECORDED.

Workings at the site

  • Type of workings Surface/Underground
    Area 0HA
    Length 9.14M
    Overall length 18.29M
    Overall width 3.05M

Comments on the workings information

  • DEVELOPED BY AN OPEN CUT AND TUNNEL

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS M013520
U.S. Bureau of Mines Minerals Availability System MAS 0410110015
U.S. Bureau of Mines Minerals Availability System MAS 0410110023
U.S. Bureau of Mines Minerals Availability System MAS 0410110024

Bibliographic references

  • Deposit

    BROOKS, H.C., AND RAMP, LEN, 1968, GOLD AND SILVER IN OREGON: OREGON DEPARTMENT OF GEOLOGY AND MINERAL INDUSTRIES BULLETIN 61, P. 180-181.

  • 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. 19, 22-24.

  • Deposit

    PARDEE, J.T., 1934, BEACH PLACERS OF THE OREGON COAST: U.S. GEOLOGICAL SURVEY CIRCULAR 8, P. 39-40.

General comments

Subject category Comment text
Deposit BLACK SAND STREAKS 1-8 IN. THICK AT BOTTOM OF A PEBBLY LAYER, AGGREGATE 3 OR 4 FT. PLACER AREA MAY BE 200 X 500 FT. ANCIENT BEACT TERRACE

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JAN-1974 Lee, W U.S. Geological Survey
Updater 01-OCT-1978 Bradley, Robin (Walker, George W.) U.S. Geological Survey
Updater 01-MAY-1989 Peterson, Jocelyn A. U.S. Geological Survey