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Moose Jaw

Prospect in Alaska, United States with commodities Gold, Antimony, Arsenic, Mercury
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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 10307772
Record type Site
Current site name Moose Jaw

Geographic coordinates

Geographic coordinates: -155.997, 63.54546 (WGS84)
Relative position The Moose Jaw prospect is located in the apex of a north-facing, steep spur of the Cripple Creek Mountains at an elevation of 2,050 feet (625 m) in Section 32, T. 22 S., R. 15 E., of the Kateel River Meridian. Location is precisely known; reporter visited the site in 1996.

Site location context

Political divisions (FIPS codes)

Yukon-Koyukuk(Census area)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Medfra C-6(quadrangle 1:63,360 scale)

Medfra N(quadrangle 1:100,000 scale)

Medfra(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Alaska(hydrologic region)

Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Gold Primary
Antimony Critical Primary
Arsenic Critical Secondary
Mercury Secondary

Materials information

Materials Type of material
Stibnite Ore
Quartz Gangue

Alteration

  • (Local) Stibnite locally altered to stibiconite.

Mineral occurrence model information

Model code 180
USGS model code 27d
Deposit model name Simple Sb (veins, pods, etc)

Nearby scientific data

(1) -155.997, 63.54546
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = The Moose Jaw deposit is a quartz-stibnite vein deposit that cuts the hornfels aurole of the Cripple Creek Mountains Pluton near the head of Colorado Creek drainage. The deposit is conspicuously marked by a slight break or notch in a steep scree slope of hornfels outcrops and rubble. The quartz-stibnite vein trends north 55 degrees east for a distance of at least 700 feet (213 m); talus buries the vein on both ends. Where exposed, the vein varies from 1.5 to 4.0 feet (0.45 to 1.20 m) in width. . Very coarse stibnite blades up to 12 inches (30 cm) long form clusters and rosettes throughout the vein structure. Massive, finer grained stibnite makes up about 20 percent of the Moose Jaw vein, whereas disseminated stibnite zones characterize about 30 percent of the vein. About 50 percent of the vein consists of mixtures of massive to coarse, bladed stibnite and euhedral quartz crystals, disseminated quartz, and stockwork style zones in hornfels. Age of mineralization is inferred to be Late Cretaceous based on 71.0 Ma age of adjacent pluton (Bundtzen and others, 1997). Pits have been dug along about 400 feet (122 m) of strike of the vein; however, the first published descriptions are from Bundtzen and other (1997). Four chip-channel samples along about 600 feet (182 m) of the Moose Jaw prospect contained 31 to 1,675 ppb gold, 0.20 to 44.90 percent antimony, 40 to 50 ppm mercury, and 580 to 14,600 ppm arsenic.
  • Age = Late Cretaceous (inferred) based on 71.0 Ma age of adjacent pluton (Bundtzen and others, 1997).

Economic information about the deposit and operations

Development status Prospect

Comments on exploration

  • Status = Inactive

Mining district

District name Innoko

Comments on the production information

  • Production Notes = Large and impressive stibnite crystals and blades that are very abundant throughout vein structure might have mineral specimen potential.

Comments on the workings information

  • Workings / Exploration = In previous years, pits were dug along about 400 feet (122 m) of strike of the vein; however, the first published descriptions are from Bundtzen and other (1997). Four chip-channel samples along about 600 feet (182 m) of the Moose Jaw prospect contained 31-to-1,675 ppb gold, 0.20-to-44.90 percent antimony, 40 to 50 ppm mercury, and 580 to 14,600 ppm arsenic.

Reference information

Comments on the references

  • Primary Reference = Bundtzen and others, 1997

General comments

Subject category Comment text
Deposit Model Name = Simple stibnite deposit (Cox and Singer, 1986; model no. 27d)
Deposit Other Comments = See Wyoming Lode (MD016) in Medfra C-6 quadrangle.

Reporter information

Type Date Name Affiliation Comment
Reporter 03-JUN-98 Bundtzen, T.K. Pacific Rim Geological Consulting

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.