1. Mineral Resources
  2. Online Spatial Data
  3. Mineral Resource Data System (MRDS)

Unnamed

Occurrence in Alaska, United States with commodities Silver, Gold, Mercury
Map
XML
JSON
KML
C
Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Commodities
  6. Materials information
  7. Alteration
  8. Mineral occurrence model information
  9. Nearby scientific data
  10. Economic information about the deposit and operations
  11. Mining district
  12. Links to other databases
  13. Bibliographic references
  14. General comments
  15. Reporter information

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.

Site location context

Political divisions (FIPS codes)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

False Pass D-5 SE(quadrangle 1:24,000 scale)

False Pass(quadrangle 1:100,000 scale)

False Pass(quadrangle 1:250,000 scale)

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

Economic information

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 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

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

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.