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

Big Blue

Prospect in Alaska, United States with commodity Gold
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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. Nearby scientific data
  8. Economic information about the deposit and operations
  9. Mining district
  10. Links to other databases
  11. Bibliographic references
  12. General comments
  13. Reporter information

Geologic information

Identification information

Deposit ID 10308575
Record type Site
Current site name Big Blue

Geographic coordinates

Geographic coordinates: -148.01095, 64.87466 (WGS84)
Relative position The Big Blue prospect is located west of Henderson Road, just west of the Prometheus shaft (FB041), at an elevation of approximately 1,550 feet (Hill, 1933, p. 148). It is about 1.3 miles east-southeast of the top of Ester Dome, in the NW1/4 sec. 32, T. 1 N., R. 2 W., Fairbanks Meridian.

Site location context

Political divisions (FIPS codes)

Fairbanks North Star(Borough)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Fairbanks D-3(quadrangle 1:63,360 scale)

Fairbanks N(quadrangle 1:100,000 scale)

Fairbanks C(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Alaska(hydrologic region)

Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Gold Primary

Materials information

Materials Type of material
Gold Ore

Nearby scientific data

(1) -148.01095, 64.87466
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = Material on the dump suggests the ore zone consisted of a fault zone of crushed schist, quartz, and gouge (Hill, 1933, p. 148). The vein strikes N. 27 E., but a dip could not be determined at the time of Hill's visit in 1931, due to the collapse of the prospect pits. The bedrock is mainly biotite schist; many pieces of quart-mica schist are on several of the dumps. The Big Blue prospect is in a unit of quartz-muscovite schist, quartzite, and chlorite-quartz schist of the Fairbanks Schist as mapped by Newberry and others (1996).

Economic information about the deposit and operations

Development status Prospect
Commodity type Metallic

Comments on exploration

  • Status = Inactive

Mining district

District name Fairbanks

Comments on the workings information

  • Workings / Exploration = In 1931, the Big Blue lead consisted of a number of shallow shafts and pits (Hill, 1933, p. 148).

Reference information

Bibliographic references

Comments on the references

  • Primary Reference = Hill, 1933

General comments

Subject category Comment text
Deposit Model Name = Schist-hosted gold-quartz vein

Reporter information

Type Date Name Affiliation Comment
Reporter 31-JUL-2001 J.R. Guidetti Schaefer and C.J. Freeman 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.