Joker Group

Occurrence in Alaska, United States with commodity Gold

Sections on this page

Identification information
Geographic coordinates
Site location context
Geographic areas
Commodities
Nearby scientific data
Ore body information
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	10003677
MRDS ID	A106448
Record type	Site
Current site name	Joker Group

Geographic coordinates

Geographic coordinates:	-146.77187, 65.43164 (WGS84)
Relative position	SEE LOCATION COMMENTS

Site location context

Political divisions (FIPS codes)

Yukon-Koyukuk(Census area)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Circle B-6(quadrangle 1:63,360 scale)

Circle SW(quadrangle 1:100,000 scale)

Circle(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Alaska(hydrologic region)

Federal lands

White Mountains National Recreation Area(National Recreation Area)

National Recreation Area BLM(Type of land area)

BLM(Federal land areas administered by BLM)

Geographic areas

Country	State
United States	Alaska

Comments on the location information

THE JOKER GROUP CAN BE REACHED VIA AN 8 MILE LONG DIRT ROAD THAT STARTS IN CIRCLE HOT SPRINGS. THE CLAIMS ARE ABOVE THE CONFLUENCE OF BOTTOM DOLLAR AND HALF -DOLLAR CREEKS. THE COORDINATES ARE FOR THE APPROXIMATE CENTER OF THE JOKER GROUP CLAIMS.

Commodities

Commodity	Importance
Gold	Primary

Nearby scientific data

(1)	-146.77187, 65.43164	ListMap

Economic information

Ore body information

General form SEE DEPOSIT DESCRIPTION COMMENTS

General form	SEE DEPOSIT DESCRIPTION COMMENTS

Economic information about the deposit and operations

Development status	Occurrence
Commodity type	Metallic
Significant	No

Comments on exploration

Status = Inactive

Mining district

District name	Circle

Comments on the workings information

SURFACE SAMPLES TAKEN.

Reference information

Links to other databases

Agency	Database name	Acronym	Record ID	Notes
USGS	Mineral Resources Data System	MRDS	A106448
USGS	Alaska Resource Data File	ARDF	CI030

Bibliographic references

Deposit

Bakke, 1991, Fairbanks gold in Vetter, 1995, Joker and 88 group property summary: 24 p.
Deposit

Vetter, R., 1995, Joker and 88 group property summary: Vetter and Associates, 24 p.
Deposit

Wiltse, M. A., Reger, R. D., Newberry, R. J, Pessel, G. H., Pinney, D. S., Robinson, M. S., and Solie, D. N., 1995, Bedrock geologic map of the Circle mining district, Alaska: Alaska Division of Geological and Geophysical Surveys Report of Investigations 95-2b, 1 sheet, scale 1:63,360.

General comments

Subject category	Comment text
Deposit	THE BEDROCK IN THE JOKER CLAIMS GROUPS IS PRIMARILY PORPHYRITIC IGNEOUS ROCK CONTAINING LARGE K-SPAR PHENOCRYSTS. VISIBLE GOLD IS FOUND IN THE QUARTZ VEINS. BOTH LODE AND PLACER GOLD ARE FOUND AT THESE CLAIMS (VETTER, 1995). WILTSE AND OTHERS (1995) MAPPED THE BEDROCK IN THE AREA AS CRETACEOUS CHLORITIZED PORPHYRITIC (HORNBLENDE) BIOTITE MONZOGRANITE TO SYENOGRANITE. THEY ALSO MAPPED A MAFIC DIKE IN THE AREA OF THE 88 GROUP CLAIMS WHICH IS DESCRIBED AS BLACK TO DARK GRAY, APHANITIC TO SLIGHTLY PORPHYRITIC, WITH MAJOR PLAGIOCLASE, AUGITE, HORNBLENDE AND MAGNETITE. THE GRANITE IS EXPOSED ALONG SEVERAL DITCHES WHERE IT IS DEEPLY WEATHERED AND FRACTURED. ABUNDANT VISIBLE GOLD IS SEEN IN THE STOCKWORK VEINING. THE LIGHT YELLOW COLOR OF THE GOLD SUGGESTS A HIGH SILVER CONTENT. PLACER GOLD FROM THE CREEKS BELOW HAS A FINENESS OF 750. SAMPLING IN THE VICINITY OF THE JOKER CLAIMS FAILED TO DELINEATE ANY SIGNIFICANT EXTENT TO THE STOCKWORK VEINING; HOWEVER, THE TREND OF THE
Deposit	STOCKWORK VEINING IS PARALLEL TO THE DITCH EXPOSURE, WHICH IS NOT AS CONTINUOUS AS THAT AT THE 88 GROUP (BAKKE,1991).

Subject category

Comment text

Deposit

THE BEDROCK IN THE JOKER CLAIMS GROUPS IS PRIMARILY PORPHYRITIC IGNEOUS ROCK CONTAINING LARGE K-SPAR PHENOCRYSTS. VISIBLE GOLD IS FOUND IN THE QUARTZ VEINS. BOTH LODE AND PLACER GOLD ARE FOUND AT THESE CLAIMS (VETTER, 1995). WILTSE AND OTHERS (1995) MAPPED THE BEDROCK IN THE AREA AS CRETACEOUS CHLORITIZED PORPHYRITIC (HORNBLENDE) BIOTITE MONZOGRANITE TO SYENOGRANITE. THEY ALSO MAPPED A MAFIC DIKE IN THE AREA OF THE 88 GROUP CLAIMS WHICH IS DESCRIBED AS BLACK TO DARK GRAY, APHANITIC TO SLIGHTLY PORPHYRITIC, WITH MAJOR PLAGIOCLASE, AUGITE, HORNBLENDE AND MAGNETITE. THE GRANITE IS EXPOSED ALONG SEVERAL DITCHES WHERE IT IS DEEPLY WEATHERED AND FRACTURED. ABUNDANT VISIBLE GOLD IS SEEN IN THE STOCKWORK VEINING. THE LIGHT YELLOW COLOR OF THE GOLD SUGGESTS A HIGH SILVER CONTENT. PLACER GOLD FROM THE CREEKS BELOW HAS A FINENESS OF 750. SAMPLING IN THE VICINITY OF THE JOKER CLAIMS FAILED TO DELINEATE ANY SIGNIFICANT EXTENT TO THE STOCKWORK VEINING; HOWEVER, THE TREND OF THE

Deposit

STOCKWORK VEINING IS PARALLEL TO THE DITCH EXPOSURE, WHICH IS NOT AS CONTINUOUS AS THAT AT THE 88 GROUP (BAKKE,1991).

Reporter information

Type	Date	Name	Affiliation	Comment
Reporter	01-SEP-1998	C.J. Freeman, J.R. Guidetti Schaefer, A.S. Clements	Avalon Development 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.