Unnamed

Occurrence in Alaska, United States with commodities Silver, Gold, Mercury

Geologic information

Identification information

Deposit ID	10090198
MRDS ID	A106111
Record type	Site
Current site name	Unnamed

Geographic coordinates

Geographic coordinates:	-163.37881, 54.84418 (WGS84)
Relative position	Southeast of village of False Pass on the Alaska Peninsula side of Isanotski Strait, just south of Nichol Point. Latitude and longitude are accurate; however, vein system is at least 1 km wide across strike and extends south of location given here.
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Geographic areas

Country	State
United States	Alaska

Commodities

Commodity	Importance
Silver	Primary
Gold	Primary
Mercury	Secondary

Materials information

Materials	Type of material
Pyrite	Ore
Chlorite	Gangue
Epidote	Gangue
Quartz	Gangue

Alteration

(Local) Mild propylitic alteration.

Mineral occurrence model information

Model code	105
USGS model code	25a-d
Deposit model name	Epithermal vein, generic
Mark3 model number	119

Nearby scientific data

(1)	-163.37881, 54.84418	ListMap

Comments on the geologic information

Geologic Description = Well-developed, vertically oriented reticulated quartz vein system cutting mildly altered volcanic flows, rubble, breccia, and tuffaceous breccia. Zone extends more than 1 km across strike, veins are concentrated at northern end of zone. Sulfides are generally not apparent, though some areas have structures (vugs) indicating the removal of pyrite by weathering.

Economic information

Economic information about the deposit and operations

Development status	Occurrence
Commodity type	Metallic

Comments on exploration

Status = Inactive

Mining district

District name	Alaska Peninsula

Comments on the workings information

Workings / Exploration = Zone discovered in 1990 by F.H. Wilson and G.D. DuBois during USGS reconnaissance field work. Sampling conducted in 1990, 1991, and 1992 indicates that a number of the veins are gold-bearing, having assay values up to 42 ppb Au and 1.9 ppm Ag.

Reference information

Links to other databases

Agency	Database name	Acronym	Record ID	Notes
USGS	Mineral Resources Data System	MRDS	A106111
USGS	Alaska Resource Data File	ARDF	FP012

Bibliographic references

Deposit

F.H. WILSON AND W.H. WHITE, U.S.G.S. UNPUBLISHED DATA, 1992
Deposit

F.H. Wilson, unpublished data, 1992

Comments on the references

Primary Reference = F.H. Wilson, unpublished data, 1992

General comments

Subject category	Comment text
Deposit	Model Name = Epithermal gold vein
Deposit	Other Comments = No color anomaly; this occurrence does not have an unusual appearance with respect to the local country rock.

Reporter information

Type	Date	Name	Affiliation	Comment
Reporter	28-OCT-1992	F.H. Wilson	U.S. Geological Survey