MRDS 10309030

Past Producer in Alaska, United States with commodities Gold, Iron, Platinum, Tin, Thorium, Uranium, Tungsten, Zirconium
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 10309030
MRDS ID A011590
Record type Site
Current site name
Related records 10210092, 10000922

Geographic coordinates

Geographic coordinates: -150.88576, 62.17253 (WGS84)
Relative position U.S. Bureau of Mines MAS/MILS database (1998) locates this area near the confluence of Peters Creek and Kahiltna River on a circular bar in the northwest quarter of Section 14, T. 24 N., R. 9 W., of the Seward Meridian; this placer extends several hundred feet up and down stream from the coordinates given. Also shown as locality 66 by Reed and others, 1978.

Site location context

Political divisions (FIPS codes)

Matanuska-Susitna(Borough)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Talkeetna A-2(quadrangle 1:63,360 scale)

Talkeetna SE(quadrangle 1:100,000 scale)

Talkeetna(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Yentna River(hydrologic unit)

Susitna River(hydrologic accounting unit)

South Central Alaska(hydrologic subregion)

Alaska(hydrologic region)

Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Gold Primary
Iron Secondary
Platinum Critical Secondary
Tin Critical Secondary
Thorium Secondary
Uranium Secondary
Tungsten Critical Secondary
Zirconium Critical Secondary

Comments on the commodity information

  • Ore Material = uranothorianite

Materials information

Materials Type of material
Cassiterite Ore
Gold Ore
Hematite Ore
Ilmenite Ore
Magnetite Ore
Monazite Ore
Platinum Ore
Scheelite Ore
Apatite Gangue
Feldspar Gangue
Garnet Gangue
Limonite Gangue
Pyroxene Gangue
Quartz Gangue
Sphene Gangue
Spinel Gangue
Tourmaline Gangue
Zircon Gangue

Mineral occurrence model information

Model code 119
USGS model code 39a
Deposit model name Placer Au-PGE
Mark3 model number 54

Nearby scientific data

(1) -150.88576, 62.17253

Economic information

Comments on the geologic information

  • Geologic Description = At this locality Bates and Wedow (1953) report stream gravels 6 to 9 feet deep, several hundred yards wide that contain the following ore minerals in concentrate samples: cassiterite, gold, hematite, ilmenite, magnetite, monazite, platinum, scheelite, thorianite, uranothorianite. Robinson and others (1955, p. 2) report concentrates from Sholan Bar contain 0.14% U, 0.05% ThO2, 0.237% eU in concentrates and Round Bend Bar 0.08% U, 0.19% eU in concentrates. Robinson and others (1955, p. 2, 21-22) also report variable amounts of apatite, feldspar, garnet, limonite, pyroxene, quartz, sphene, spinel, tourmaline, zircon in the concentrates. A prospector's sample from a drill hole on the Kahiltna River (probably from Red Hill Bar) contained approximately 25% ilmenite, 20% monazite, 15% zircon, 15% magnetite, 5% platinum, 5% scheelite, 5% uranothorianite, 5% garnet, 3% cassiterite and 2% sphene. Gold has also been reported in stream and bench placers on Lake Creek (TL065), which runs parallel to the Kahiltna River on its west side. Also see ARDF records TY027, 028, 029 in the Tyonek quadrangle.
  • Age = Pleistocene.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic

Comments on exploration

  • Status = Undetermined.

Mining district

District name Yentna

Comments on the workings information

  • Workings / Exploration = The drainage has been prospected and mined by various small scale surface methods.

Reference information

Bibliographic references

Comments on the references

  • Primary Reference = Bates and Wedow, 1953

General comments

Subject category Comment text
Deposit Model Name = Placer Au-PGE (Cox and Singer, 1986; model 39a).
Deposit Other Comments = Gold has also been reported in stream and bench placers on Lake Creek (TL065), which runs parallel to the Kahiltna River on its west side. See also ARDF records TY027, 028, 029 in the Tyonek quadrangle.

Reporter information

Type Date Name Affiliation Comment
Reporter 10-AUG-1998 Madelyn A. Millholland Millholland & Associates

Beyond USGS

Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.

Authoritative Alaska resources

These are landing pages for further research — the state agencies don't currently expose per-mine deep links.