Unnamed (head of Hartman River)

Occurrence in Alaska, United States with commodities Gold, Antimony
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. 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 10002164
MRDS ID A013061
Record type Site
Current site name Unnamed (head of Hartman River)

Geographic coordinates

Geographic coordinates: -153.58138, 61.64753 (WGS84)
Relative position This occurrence is in the peaks between Sled Pass and the southeast headwaters of the Hartman River. It is at an elevation of about 5,900 feet, 1.3 miles east-southeast of peak 7435. The map site is in the SW1/4 section 14, T 18 N, R 24 W, of the Seward Meridian. This is locality 4 of Cobb (1972 [MF 412]; 1976 [OF 76-485]) and locality 18 of Gamble and others (1989). The location is probably accurate to within a quarter of a mile.

Site location context

Political divisions (FIPS codes)

Bethel(Census area)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Lime Hills C-2(quadrangle 1:63,360 scale)

Lime Hills NE(quadrangle 1:100,000 scale)

Lime Hills(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper Kuskokwim River(hydrologic accounting unit)

Southwest(hydrologic subregion)

Alaska(hydrologic region)

Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Gold Primary
Antimony Critical Primary

Materials information

Materials Type of material
Stibnite Ore

Mineral occurrence model information

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

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Granitoid > Granite
    Stratigraphic age (youngest) Late Cretaceous
  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Siltstone

Nearby scientific data

(1) -153.58138, 61.64753

Economic information

Comments on the geologic information

  • Geologic Description = Reed and Elliott (1970) reported blocks of massive stibnite as much as a foot across in frost-heaved rubble near the top of the ridge and in talus. This float is within a few feet of its source, which is probably stibnite-bearing veins localized along faults or shears in Upper Mesozoic argillite and graywacke. In addition to high concentrations of antimony, samples contain as much as 500 ppm lead and 0.45 ppm gold. The mineralized area is near the contact with a Cretaceous or Tertiary granite pluton.
  • Age = Tertiary Mineralization crosscuts Upper Mesozoic sedimentary rocks. Polymetallic mineralization in this region is commonly associated with Tertiary granitic rocks.

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic

Comments on exploration

  • Status = Inactive

Mining district

District name McGrath

Comments on the workings information

  • Workings / Exploration = Reconnaissance sampling has been completed in this area (Reed and Elliott, 1970).

Reference information

Bibliographic references

Comments on the references

  • Primary Reference = Reed and Elliott, 1970

General comments

Subject category Comment text
Deposit Model Name = Simple Sb deposits (Cox and Singer, 1986, model 27d)

Reporter information

Type Date Name Affiliation Comment
Reporter 10-JUN-2001 Travis L. Hudson Applied Geology
Reporter 10-JUN-2001 Travis L. Hudson Applied Geology

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.