American Creek Placer

Producer in Alaska, United States with commodities Gold, REE

Geologic information

Identification information

Deposit ID 10002697
MRDS ID A015139
Record type Site
Current site name American Creek Placer
Related records 10209229

Geographic coordinates

Geographic coordinates: -141.32494, 64.67978 (WGS84)
Relative position ABOUT 9 MILES SSW OF EAGLE
(click for info)

Geographic areas

Country State
United States Alaska

Comments on the location information

  • USGS MF-393, LOC. 35, 37. COORDINATES GIVEN ARE FOR DISCOVERY CLAIM AT THE MOUTH OF DISCOVERY FORK 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
REE Tertiary

Materials information

Materials Type of material
Gold Ore
Barite Gangue
Garnet Gangue
Ilmenite Gangue
Rutile Gangue
Zircon Gangue
Monazite Unknown

Analytical data

Result FINENESS AVERAGES 865 PARTS AU AND 130 PARTS AG. SEE REF. 3, P. 255

Host and associated rocks

  • Host or associated Associated
    Rock type Metamorphic Rock > Metavolcanic Rock > Mafic Metamorphic Rock > Greenstone
  • Host or associated Associated
    Rock type Metamorphic Rock > Serpentinite
  • Host or associated Host
    Rock type Unconsolidated Deposit > Gravel

Nearby scientific data

(1) -141.32494, 64.67978

Comments on the geologic information

  • MAIN STREAM AND 2 HEADWATER TRIBUTARIES FLOW IN NARROW V-SHAPED VALLEYS. ; MAJOR.UNITS: BEDROCK FOR 5 MILES UPSTREAM FROM MOUTH IS TERTIARY SEDIMENTARY ROCKS. FURTHER UPSTREAM BEDROCK IS A COMPLEX ASSEMBLAGE OF METAMORPHOSED PALEOZOIC SEDIMENTARY ROCKS AND GREENSTONE. NEAR CONFLUENCE OF FORKS BEDROCK IS SERPENTINE CUT BY BASIC DIKES. ; REG.COM: GOLD DERIVED FROM QUARTZ VEINS.

Economic information

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Deposit size Small
Significant No
Year of first production 1896

Comments on development

  • MOST OF MINING BY GROUNDSLUICING OVERBURDEN AND SHOVELING INTO SLUICE BOXES. A HYDRAULIC PLANT OPERATED 1903-04. MINED IN 1975 BY BULLDOZER.

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS A015139

Bibliographic references

  • Deposit

    USGS MF-393 (C-1), LOC. 37.

  • Deposit

    USGS BULL. 897-C, P. 199-201

  • Deposit

    USGS BULL. 917-D, P. 255.

General comments

Subject category Comment text
Deposit CREEK FALLS 3,000 FT. FROM HEAD TO MOUTH, GRADIENT 100-200 FT. PER MILE. DESCRIPTION REPRESENTS ENTIRE LENGTH OF AMERICAN CR. AND ITS 2 HEADWATER FORKS FROM HEAD TO MOUTH. ; 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.
Deposit GOLD MAINLY ON AND IN CREVICES IN UPPER PART OF DECOMPOSED BEDROCK. OVERBURDEN AVERAGES 14 FT. IN THICKNESS. GOLD BEARING QUARTZ VEINS FOUND NEAR HEAD.

Reporter information

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