Unnamed (east of Walker Lake)

Occurrence in Alaska, United States with commodities Silver, Copper, Lead, Molybdenum

Sections on this page

Identification information
Geographic coordinates
Site location context
Geographic areas
Commodities
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	10308344
Record type	Site
Current site name	Unnamed (east of Walker Lake)

Geographic coordinates

Geographic coordinates:	-154.1734, 67.1496 (WGS84)
Relative position	This site is at an elevation of about 3700 feet, on a ridge about 4.5 miles east of Walker Lake and 2 miles northwest of the Kobuk River. It is in the NW1/4 of sec. 12, T. 21. N., R 21 E., of the Kateel River Meridian. The location is accurate to within 2000 ft. The site corresponds to locality 73 of Grybeck and Nelson (1981).

Site location context

Political divisions (FIPS codes)

Northwest Arctic(Borough)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Survey Pass A-3(quadrangle 1:63,360 scale)

Survey Pass S(quadrangle 1:100,000 scale)

Survey Pass C(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper Kobuk River(hydrologic unit)

Kobuk-Selawik Rivers(hydrologic accounting unit)

Northwest(hydrologic subregion)

Alaska(hydrologic region)

Federal lands

Gates of the Arctic National Park(National Park)

National Park NPS(Type of land area)

NPS(Federal land areas administered by NPS)

Geographic areas

Country	State
United States	Alaska

Commodities

Commodity	Importance
Silver	Primary
Copper	Primary
Lead	Primary
Molybdenum	Primary

Mineral occurrence model information

Model code	184
USGS model code	28a
Deposit model name	Massive sulfide, kuroko
Mark3 model number	93

Nearby scientific data

(1)	-154.1734, 67.1496	ListMap

Economic information

Comments on the geologic information

Geologic Description = This occurrence consists of a 100-foot-thick section of Mn-stained graphitic schist, from which grab samples assayed up to 5 ppm Ag, 500 ppm Cu, 70 ppm Mo, and 70 ppm Pb. The schist is Devonian in age (Grybeck and Nelson, 1981). Grybeck and Nelson (1981) note that the occurrence is probably similar to volcanogenic massive sulfide deposits elsewhere in the Survey Pass quadrangle.
Age = Devonian, based on the age of the host rocks.

Economic information about the deposit and operations

Development status	Occurrence

Comments on exploration

Status = Inactive

Mining district

District name	Shungnak

Reference information

Links to other databases

Agency	Database name	Acronym	Record ID	Notes
USGS	Alaska Resource Data File	ARDF	SP042

Bibliographic references

Deposit

Garland, R.E., Eakins, G.R., Trible, T.C., and McClintock, W.W., 1975, Geochemical analysis of rock and stream-sediment samples from Survey Pass A-3 quadrangle: Alaska Division of Geological and Geophysical Surveys Open-File Report 66, 4 p, 2 sheets, scale 1:63,360.
Deposit

Grybeck, D.J., and Nelson, S.W., 1981, Mineral deposit map of the Survey Pass quadrangle, Brooks Range, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-1176-F, 1 sheet, scale 1:250,000.

Comments on the references

Primary Reference = Garland and others, 1975 (ADGGS OFR 66)

General comments

Subject category	Comment text
Deposit	Model Name = Kuroko massive sulfide (Cox and Singer, 1986; model 28a)

Reporter information

Type	Date	Name	Affiliation	Comment
Reporter	04-OCT-99	S.W. Nelson	U.S. Geological Survey

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.