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  3. Mineral Resource Data System (MRDS)

Colbert and Warmbold

Occurrence 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. Alteration
  8. Host and associated rocks
  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 10002945
MRDS ID A015439
Record type Site
Current site name Colbert and Warmbold

Geographic coordinates

Geographic coordinates: -147.41407, 65.05579 (WGS84)
Relative position Cobb (1972, MF-413), loc. 42; SE1/4 sec. 30, T. 3 N., R. 2 E., of the Fairbanks Meridian. This occurrence is near the head of Tamarack Creek, about 1 mile northeast of Cleary Summit. Accuracy is within 3,000 feet.

Site location context

Political divisions (FIPS codes)

Fairbanks North Star(Borough)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Livengood A-1(quadrangle 1:63,360 scale)

Circle SW(quadrangle 1:100,000 scale)

Livengood(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

Alteration

  • (Local) Iron oxide stains.

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Schist

Nearby scientific data

(1) -147.41407, 65.05579
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = This occurrence consists of small gold-bearing quartz veins in schist; the veins strike N 50 W and dip 28 S (Chapman and Foster, 1969). In October, 1932, an adit was driven to intersect three quartz-bearing shear zones previously found on the surface. In early February, 1933, the adit had been driven a distance of 550 feet (Pilgrim, 1933). At the 175 foot station of the adit, a one-inch-thick quartz veinlet was intersected. This stringer zone strikes N 48 W and dips 53 SW and carried a small amount of free gold. The adit intersects a second mineralized zone at the 240 foot station. This shear zone consists of barren brecciated schist and gouge. At the 380 foot station, the adit intersected a shear zone trending N 60 W and dipping 28 SW (Pilgrim, 1933; Stewart, 1933). This shear zone dips 45 SW at the surface. The shear contains a 5-inch-thick crushed quartz stockwork zone containing abundant free gold. The zone was iron-oxide stained and contained no visible sulfides.

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic

Comments on exploration

  • Status = Inactive

Mining district

District name Fairbanks

Comments on the workings information

  • Workings / Exploration = In October, 1932, an adit was driven to intersect three quartz-bearing shear zones previously found on the surface. In early February, 1933 the adit had been driven a distance of 550 feet (Pilgrim, 1933). Mineralized zones were encountered at the 175 foot, 240 foot, and 380 foot stations (Pilgrim, 1933).

Reference information

Bibliographic references

Comments on the references

  • Primary Reference = Pilgrim, 1933

General comments

Subject category Comment text
Deposit Model Name = Gold-quartz vein.

Reporter information

Type Date Name Affiliation Comment
Reporter 04-MAY-1999 C.J. Freeman Avalon Development Corporation
Reporter 04-MAY-1999 J.R. Guidetti Schaefer 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.