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Cone Mountain

Prospect in Alaska, United States with commodities Uranium, Lead, Zinc
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Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Commodities
  6. Mineral occurrence model information
  7. Host and associated rocks
  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 10000175
MRDS ID A010211
Record type Site
Current site name Cone Mountain

Geographic coordinates

Geographic coordinates: -131.73489, 56.51365 (WGS84)
Relative position The approximate location of the Cone Mountain prospect is in Section 7 at an elevation of about 3000 feet on the west flank of Cone Mountain, about 0.8 mile east of the Kateel River (Elliott and Koch, 1981, p. 7, loc. 4). This location is probably accurate within about a quarter of a mile.

Site location context

Political divisions (FIPS codes)

Wade Hampton(Census area)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

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

Bradfield Canal NW(quadrangle 1:100,000 scale)

Bradfield Canal(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Central Southeast Alaska(hydrologic accounting unit)

Southeast Alaska(hydrologic subregion)

Alaska(hydrologic region)

Federal lands

Tongass National Forest(National Forest)

National Forest FS(Type of land area)

FS(Federal land areas administered by FS)

Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Uranium Primary
Lead Secondary
Zinc Critical Secondary

Comments on the commodity information

  • Ore Material = Unspecified radioactive minerals

Mineral occurrence model information

Model code 53
USGS model code 17
Deposit model name Porphyry Cu
Mark3 model number 4

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Granitoid > Granite
    Stratigraphic age (youngest) Pliocene
    Stratigraphic age (youngest) Pliocene
  • Host or associated Host
    Rock type Plutonic Rock > Granitoid > Granite

Nearby scientific data

(1) -131.73489, 56.51365
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = The country rocks in the general area of the Cone Mountain prospect are a Miocene(?) alkali feldspar granite stock and associated quartz-porphyritic rhyolite dikes (Koch, 1996, 1997). The prospect is on the western margin of the stock, which intrudes Eocene granodiorite and quartz monzonite plutons and Mesozoic or Paleozoic pelitic schist and paragneiss. A group of 145 claims was staked in 1976, presumably for uranium-bearing and related minerals (Elliott and Koch, 1981, loc. 4; Koch and others, 1981; U. S. Geological Survey, 1979). Geochemical surveys [(Koch and Elliott, 1981 (OFR 81-728C-K)] show high values of Ag, Be, Mo, Nb, Pb, Sn, Y and REE, and Zn in rock, stream-sediment and heavy-mineral concentrate samples from the immediate area of the stock. Differentiation enrichment of these elements in such a highly-evolved silicic magma may account for most of the values reported, but a few Pb and Zn values are sufficiently high to suggest local sulfide deposition.
  • Age = Miocene

Economic information about the deposit and operations

Development status Prospect
Commodity type Metallic

Comments on exploration

  • Status = Inactive

Mining district

District name Petersburg

Comments on the workings information

  • Workings / Exploration = 145 claims staked in 1976. Claims were active for 2 or 3 years. Exploration by private interests included some diamond drilling. ? Geochemical surveys by the U.S. Geological Survey in the late 1970's [Koch and Elliott, 1981 (OFR 81-728C-K)] show high values of Ag, Be, Mo, Nb, Pb, Sn, Y and REE, and Zn in rock, stream-sediment and heavy-mineral concentrate samples from the immediate area of the stock.

Reference information

Bibliographic references

Comments on the references

  • Primary Reference = Elliott and Koch, 1981

General comments

Subject category Comment text
Deposit Model Name = Felsic plutonic uranium?

Reporter information

Type Date Name Affiliation Comment
Reporter 17-MAY-1998 H. C. Berg U.S. Geological Survey

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.