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Wallace

Prospect in Alaska, United States with commodities Gold, Zinc
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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 10308697
Record type Site
Current site name Wallace

Geographic coordinates

Geographic coordinates: -159.91783, 61.06133 (WGS84)
Relative position The Wallace prospect is located on the crest of the ridge along the northwest side of lower California Creek. It is at an elevation of about 1,300 feet, in the NE1/4 sec. 9, T. 11 N., R. 60 W., of the Seward Meridian. It is accurately located.

Site location context

Political divisions (FIPS codes)

Bethel(Census area)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Russian Mission A-3(quadrangle 1:63,360 scale)

Russian Mission SE(quadrangle 1:100,000 scale)

Russian Mission(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Kuskokwim Delta(hydrologic unit)

Lower Kuskokwim River(hydrologic accounting unit)

Southwest(hydrologic subregion)

Alaska(hydrologic region)

Federal lands

Calista Corporation(ANCSA Region)

ANCSA Region NTVPIC(Type of land area)

NTVPIC(Federal land areas administered by NTVPIC)

Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Gold Primary
Zinc Critical Secondary

Materials information

Materials Type of material
Gold Ore
Sphalerite Ore
Telluride Ore
Amphibole Gangue
Chlorite Gangue
Limonite Gangue

Alteration

  • Silicification.

Mineral occurrence model information

Model code 273
USGS model code 36a
Deposit model name Low-sulfide Au-quartz vein
Mark3 model number 27

Nearby scientific data

(1) -159.91783, 61.06133
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = In 1945, R. E. Wallace of the U.S. Geological Survey discovered free gold in quartz veins cutting a granitic dike at this location (unpub. field data, 1945). Wallace described the deposit in unpublished notes and memoranda (1945, 1997), although the U.S. Geological Survey announced the discovery in a press release on August 4, 1945. The steeply dipping or vertical granitic dike is about 40 feet wide and trends N 20 E, subparallel to the ridge. Wallace traced it along strike for about 300 feet in this area. A similar dike may occur a few thousand feet to the southwest (RM026). Wallace noted that quartz veinlets were localized in the southeastern half of the dike and that the gold occupied open spaces in the interior of the veinlets. Two samples were assayed; one contained 0.59 ounce of gold per ton and the other 1.3 ounces of gold per ton. Accompanying the gold was a slightly more abundant, soft (hardness of 2 to 3), silver-white mineral having laminar cleavage. This mineral was tentatively identified as a telluride. Limonite and traces of sphalerite, chlorite, and amphibole were also present in the veins. The dike, which may be an apophysis of a nearby mid-Cretaceous pluton, intrudes Jurassic volcanic rocks (Box and others, 1993).
  • Age = Cretaceous or Tertiary. The gold-bearing quartz veins crosscut a granitic dike that may be mid-Cretaceous in age. The dike intrudes Jurassic volcanic rocks.

Economic information about the deposit and operations

Development status Prospect
Commodity type Metallic

Mining district

District name Aniak

Comments on the workings information

  • Workings / Exploration = Prospecting pit(s) are probably present at this location.

Reference information

Bibliographic references

  • Deposit

    Box, S.E, Moll-Stalcup, E.J., Frost, T.P., and Murphy, J.M., 1993, Preliminary geologic map of the Bethel and southern Russian Mission quadrangles, southwestern Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-2226-A, 20 p., scale 1:250,000.

Comments on the references

  • Primary Reference = This record

General comments

Subject category Comment text
Deposit Model Name = Low-sulfide Au-quartz veins (Cox and Singer, 1986; model 36a)

Reporter information

Type Date Name Affiliation Comment
Reporter 10-JUN-2001 Travis L. Hudson Applied Geology
Reporter 10-JUN-2001 Madelyn A. Millholland Millholland & Associates

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.