Unnamed (tributary to East Fork Chulitna River)

Occurrence in Alaska, United States with commodity Gold

Sections on this page

Identification information
Geographic coordinates
Site location context
Geographic areas
Commodities
Materials information
Mineral occurrence model information
Nearby scientific data
Economic information about the deposit and operations
Mining district
Links to other databases
Bibliographic references
General comments
Reporter information

Geologic information

Identification information

Deposit ID	10307564
Record type	Site
Current site name	Unnamed (tributary to East Fork Chulitna River)

Geographic coordinates

Geographic coordinates:	-148.9628, 63.1696 (WGS84)
Relative position	This occurrence of placer gold is on an unnamed southeast-flowing tributary of the East Fork Chulitna River. The placer extends upstream from the map site, which is in the SE1/4 of sec. 19, T. 20 S., R. 7 W., of the Fairbanks Meridian. This is location D-3 of Balen (1990: OFR 34-90).

Site location context

Political divisions (FIPS codes)

Matanuska-Susitna(Borough)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Healy A-4(quadrangle 1:63,360 scale)

Healy S(quadrangle 1:100,000 scale)

Healy C(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Chulitna River(hydrologic unit)

Susitna River(hydrologic accounting unit)

South Central Alaska(hydrologic subregion)

Alaska(hydrologic region)

Federal lands

BLM(Federal land areas administered by BLM)

Geographic areas

Country	State
United States	Alaska

Commodities

Commodity	Importance
Gold	Primary

Materials information

Materials	Type of material
Gold	Ore

Mineral occurrence model information

Model code	119
USGS model code	39a
Deposit model name	Placer Au-PGE
Mark3 model number	54

Nearby scientific data

(1)	-148.9628, 63.1696	ListMap

Economic information

Comments on the geologic information

Geologic Description = This tributary drains an area underlain by Lower Cretaceous or Upper Jurassic turbidites and Lower Tertiary volcanic rocks (Wilson and others, 1998). Of 13 placer samples collected the highest values were 360 ppb gold and 110 ppm tin (Balen, 1990: OFR 34-90). The source of the placer gold and tin is unknown.
Age = Quaternary.

Economic information about the deposit and operations

Development status	Occurrence

Comments on exploration

Status = Probably inactive

Mining district

District name	Valdez Creek

Comments on the workings information

Workings / Exploration = Surface workings only to date.

Reference information

Links to other databases

Agency	Database name	Acronym	Record ID	Notes
USGS	Alaska Resource Data File	ARDF	HE141

Bibliographic references

Deposit

Balen, M.D., 1990, Geochemical sampling results from the Bureau of Mines Investigations in the Valdez Creek mining district, Alaska: U.S. Bureau of Mines Open-File Report 34-90, 218 p., 2 plates, scale 1:250,000.
Deposit

Wilson, F.H., Dover, J.H., Bradley, D.C., Weber, F.R., Bundtzen, T.K., and Haeussler, P.J., 1998, Geologic map of central (interior) Alaska: U.S. Geological Survey Open-File Report 98-133, 17 p., 2 sheetsm, scale 1:500,000.

Comments on the references

Primary Reference = Balen, 1990 (OFR 34-90)

General comments

Subject category	Comment text
Deposit	Model Name = Placer Au (Cox and Singer, 1986; model 39a)

Reporter information

Type	Date	Name	Affiliation	Comment
Reporter	07-APR-00	N. Van Wyck	Stevens Exploration Management Corporation

Beyond USGS

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

Maps centered on this site

Authoritative Alaska resources

These are landing pages for further research — the state agencies don't currently expose per-mine deep links.