Mountain Top

Producer in Alaska, United States with commodities Mercury, Antimony
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. Host and associated rocks
  10. Nearby scientific data
  11. Economic information about the deposit and operations
  12. Mining district
  13. Links to other databases
  14. Bibliographic references
  15. General comments
  16. Reporter information

Geologic information

Identification information

Deposit ID 10002509
MRDS ID A013448
Record type Site
Current site name Mountain Top

Geographic coordinates

Geographic coordinates: -157.97172, 61.39743 (WGS84)
Relative position Location used is Robinson (1984, RI84-11) sample no. 2983. The site is located in the central Sleetmute 20 quadrangle 4.1 miles (6.6 km) on a bearing of N60E from Chineekluk Mountain. It is on the dividing line between ranges 48W and 49W in township 15N and is 0.7 miles (1.1 km) north of the Chineekluk Creek. Accurate to within 0.25 miles (0.4 km).

Site location context

Political divisions (FIPS codes)

Bethel(Census area)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Sleetmute B-6(quadrangle 1:63,360 scale)

Sleetmute SW(quadrangle 1:100,000 scale)

Sleetmute C(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Aniak(hydrologic unit)

Lower Kuskokwim River(hydrologic accounting unit)

Southwest(hydrologic subregion)

Alaska(hydrologic region)

Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Mercury Primary
Antimony Critical Secondary

Materials information

Materials Type of material
Cinnabar Ore
Stibnite Ore
Dickite Gangue
Dolomite Gangue
Quartz Gangue

Alteration

  • (Local) Basaltic rock altered to silica, dolomite, clay, and minor iddingsite.

Mineral occurrence model information

Model code 178
USGS model code 27b
Deposit model name Almaden Hg

Host and associated rocks

  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Mafic Volcanic Rock > Basalt
    Stratigraphic age (youngest) Pliocene
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Mafic Volcanic Rock > Basalt

Nearby scientific data

(1) -157.97172, 61.39743

Economic information

Comments on the geologic information

  • Geologic Description = Bedrock consists of graywacke and shale in association with olivine basalt dikes (Sorg and Estlund, 1972) or flows (Reifenstuhl and others, 1984). Mineralization consists of veins of cinnabar 1 dolomite localized near faults in the basalt. Stibnite 1 quartz found as float fragments. Sorg and Estlund (1972) reported presence of hydrocarbons, dickite, and buddingtonite at Mountain Top.

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic

Comments on exploration

  • Status = Active

Mining district

District name Aniak

Comments on the production information

  • Production Notes = About 165 flasks of Hg produced from 1982-86 (Miller and others, 1989)

Comments on the reserve resource information

  • Reserves = Sorg and Estlund (1972) estimate 200 flasks of reserves (produced 165 flasks from '82-86).

Comments on the workings information

  • Workings / Exploration = Explored by hand auger and bulldozer after discovery in 1968. USBM drilled 7 holes (50 ft(15 m) in 1979.

Reference information

Bibliographic references

Comments on the references

  • Primary Reference = Sorg "&" Estlund, 1972

General comments

Subject category Comment text
Deposit Model Name = Epithermal vein, mercury-antimony

Reporter information

Type Date Name Affiliation Comment
Reporter 02-JUN-1994 Huber, D.F. U.S. Geological Survey
Reporter 02-JUN-1994 Niles, L.P. U.S. Geological Survey
Reporter 02-JUN-1994 Miller, M.L. U.S. Geological Survey

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.