Woodchopper Creek Placer

Producer in Alaska, United States with commodities Gold, Platinum, REE
Warning: This record lacks important information: bibliographic references, which we consider necessary for a comprehensive report.

Geologic information

Identification information

Deposit ID 10002772
MRDS ID A015234
Record type Site
Current site name Woodchopper Creek Placer

Geographic coordinates

Geographic coordinates: -143.41175, 65.29476 (WGS84)
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Geographic areas

Country State
United States Alaska

Comments on the location information

  • MF-390, LOC. 3. COORDINATES GIVEN ARE FOR LANDING STRIP MARKED ON CHARLEY RIVER (B-5) NEAR THE MOUTH OF IRON CREEK. PLACER EXTENDS 2 MILES DOWNSTREAM AND 1/2 MI. UPSTREAM. LAND STATUS VALUE CALCULATED 6-94 USING GIS OVERLAY ANALYSIS WITH BLM 1:2,500,000 SCALE OWNERSHIP STATUS MAP (1991).

Commodities

Commodity Importance
Gold Primary
Platinum Secondary
REE Tertiary

Materials information

Materials Type of material
Gold Ore
Monazite Ore
Platinum Ore

Nearby scientific data

(1) -143.41175, 65.29476

Comments on the geologic information

  • VALLEY IS ASYMETRICAL WITH STEEP SE WALL. NO GOLD PLACERS HAVE BEEN FOUND IN HEADWATER PART OF VALLEY SOUTH OF THE TERTIARY CONTACT. ; MAJOR.UNITS: BEDROCK FROM MOUTH UPSTREAM IS MIDDLE DEVONIAN LAVA FLOWS; LOWER CRETACEOUS BLACK SLATE FOR ABOUT A MILE; A WEDGE OF CRYSTALINE LIMESTONE; MISSISSIPPIAN CHERT AND CONGLOMERATE FOR ABOUT A MILE; TERTIARY CONGLOMERATE AND RELATED ROCKS AT PAYSTREAK FOR ABOUT 2 MILES; AND OLDER GRANITE AND METAMORPHIC ROCKS TO HEAD. ; REG.COM: GOLD DEPOSITS MAY HAVE BEEN RECONCENTRATED FROM TERTIARY CONGLOMERATES FORMED LARGELY BY THE EROSION OF NEARLY METAMORPHIC ROCKS.

Economic information

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year <1903
Year of first production 1903

Mining district

District name Circle

Comments on development

  • MINED IN EARLY YEARS BY HYDRAULIC METHODS AND DRIFTING. MINED INTERMITTANTLY BY DREDGE 1937-1964. MINED IN 1975 BY NON-FLOAT PLANT.

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS A015234

General comments

Subject category Comment text
Deposit GOLD IN GRAVEL AND ON CONGLOMERATE BEDROCK. ALL MINING IN OR DOWNSTREAM FROM AREA OF TERTIARY CONGLOMERATE. GRAVEL 11-30 FT. THICK OVERLAIN BY 5-20 FT. OF MUCK. PLACER MONAZITE PRESENT. PLATINUM METALS ALLOYED WITH GOLD.
Deposit STREAM GRADIENT ABOUT 100 FT. PER MILE. ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT
Deposit THIS SITE NAME WAS CREATED BY THE REPORTER OR OTHER USGS EMPLOYEE BASED ON PROXIMITY TO SOME MAJOR GEOGRAPHIC FEATURE.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-APR-1987 Powers, M.T. (Huber, D.F.) U.S. Geological Survey