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Yellow Pup

Past Producer in Alaska, United States with commodity Tungsten
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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. Mineral occurrence model information
  8. Nearby scientific data
  9. Economic information about the deposit and operations
  10. Mining district
  11. Links to other databases
  12. Bibliographic references
  13. General comments
  14. Reporter information

Geologic information

Identification information

Deposit ID 10308845
MRDS ID A015307
Record type Site
Current site name Yellow Pup
Related records 10107551

Geographic coordinates

Geographic coordinates: -147.35094, 64.98068 (WGS84)
Relative position The Yellow Pup mine is located in the SW1/4SE1/4, sec. 21, T. 2 N., R. 2 E., Fairbanks Meridian. The Yellow Pup mine is at an elevation of 1,900 feet near the head of Yellow Pup Creek, about 0.5 mile east of the summit of Gilmore Dome. The mine is locality 34 of Cobb (1972 [MF 410]).

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-1(quadrangle 1:63,360 scale)

Big Delta NW(quadrangle 1:100,000 scale)

Fairbanks(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Alaska(hydrologic region)

Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Tungsten Critical Primary

Materials information

Materials Type of material
Scheelite Ore
Apatite Gangue
Diopside Gangue
Garnet Gangue
Hornblende Gangue

Mineral occurrence model information

Model code 42
USGS model code 14a
Deposit model name W skarn

Nearby scientific data

(1) Kmgr
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = The following description of the Yellow Pup tungsten deposit is summarized from Robinson (1981). The rocks consist of a hornfelsed sequence of feldspar-quartz schist, biotite-muscovite-quartz schist, muscovite-quartz schist, calc-amphibolite, and marble. The tungsten-bearing beds occur in pelitic schists and quartzite that contain resorbed biotite and andalusite prophyroblasts that reflect hornfelsing caused by the intrusion of the nearby Gilmore Dome stock. The tungsten-bearing rocks are marble, calc-amphibolites, and siliceous calc-silicate rocks. These rocks form distinctive layers within a package of rocks dominated by barren mica schist, quartz schist, and quartzite. Two types of calc-amphibolites are present. The most common is epidote amphibolite, which has sporadic concentrations of scheelite and powellite. The other calc-amphibolite occurs in a 2-meter-thick layer in the main open cut and consists of hornblende, quartz, tremolite, muscovite, epidote clinozoisite, garnet, plagioclase, and chlorite. There may be as much as 10 percent scheelite in this amphibolite. In the mine, the mineralized zone is arched into a small, north-plunging, assymetrical antiform that flattens to the south where it is truncated by a high-angle fault. Most mineralization appears to be within the eastern limb of the structure. Other scheelite occurrences are present in epidote-amphibolite layers in surface trenches; the size of these zones varies, but none appear to be as large or as high grade as the calc-amphibolite zone.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic

Comments on exploration

  • Status = Inactive

Mining district

District name Fairbanks

Comments on the production information

  • Production Notes = After its discovery in 1942, 35 tons of ore from the tunnel were stockpiled (Thorne and others, 1948, p. 8-9). In the late 1970's, several tons of high-grade tungsten concentrates were shipped, and a large amount of unmilled ore was stockpiled (Robinson, 1981, p. 1). In 1981, Vincent Monzuella produced a few tons of scheelite concentrate and stockpiled a larger amount of high-grade, unmilled ore (Bundtzen and others, 1982, p. 27).

Comments on the workings information

  • Workings / Exploration = An adit was driven 12 feet soon after the discovery of the deposit in 1942 (Thorne and others, 1948, p. 8-9). In 1981, the workings consisted of several open cuts and trenches over an area approximately 1,000 feet long by 300 feet wide (Robinson, 1981).

Reference information

Bibliographic references

Comments on the references

  • Primary Reference = Robinson, 1981

General comments

Subject category Comment text
Deposit Model Name = W skarn deposit (Cox and Singer, 1986; model 14a)

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.