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Tom Burns

Prospect in Alaska, United States with commodities Lead, Silver, Gold, Barium-Barite, Copper, 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. 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 10001144
MRDS ID A011837
Record type Site
Current site name Tom Burns
Alternate or previous names Silver Circle
Related records 10258523

Geographic coordinates

Geographic coordinates: -144.30264, 62.85662 (WGS84)
Relative position The Tom Burns prospect is on the ridge between the upper East Fork of Indian Creek and Indian Creek (sometimes called the West Fork) at an elevation of about 4,800 feet. The prospect is approximately on the section line less than 0.1 mile north of the southeast corner of section 32, T. 13 N., R. 6 E., Copper River Meridian. The prospect is locality 4 of both Richter and Matson (1972) and MacKevett and Holloway (1977). The location is in the approximate center of the Tom Burns 1 and 2 claims and is accurate within 1000 feet.

Site location context

Political divisions (FIPS codes)

Valdez-Cordova(Census area)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Gulkana D-1(quadrangle 1:63,360 scale)

Gulkana NE(quadrangle 1:100,000 scale)

Gulkana(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper Copper River(hydrologic unit)

Copper River(hydrologic accounting unit)

South Central Alaska(hydrologic subregion)

Alaska(hydrologic region)

Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Lead Primary
Silver Secondary
Gold Secondary
Barium-Barite Critical Secondary
Copper Secondary
Zinc Critical Secondary

Materials information

Materials Type of material
Barite Ore
Chalcopyrite Ore
Galena Ore
Gold Ore
Sphalerite Ore
Tetrahedrite Ore
Quartz Gangue

Mineral occurrence model information

Model code 85
USGS model code 22c
Deposit model name Polymetallic veins
Mark3 model number 46

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
    Rock unit name Ahtell Pluton
    Rock description Ahtell Pluton
    Stratigraphic age (youngest) Late Permian
    Stratigraphic age (youngest) Late Permian
  • Host or associated Host
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite

Nearby scientific data

(1) -144.30264, 62.85662
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = The Tom Burns prospect is near the west contact of the Pennsylvanian to Permian, Ahtell Creek intrusive which here is quartz monzonite. Based on float and prospect pits, the Tom Burns vein strikes northwest and dips northeasterly. The vein varies from about 2 to 8 feet wide and consists mostly of quartz. Sulfides, predominantly galena with minor chalcopyrite and tetrahedrite, form bands on the walls of vein as much as one foot wide. A sample cut from the westernmost outcrop of the Tom Burns No. 1 claim contains trace amounts of gold and silver, 12.37 percent lead, and 0.22 percent copper. A representative sample of float collected from the Tom Burns No. 2 claim contained 0.01 ounce of gold per ton, a trace of silver and copper. and 7.82 percent lead (Thorne, 1946, fig. 3 and p. 5-6).? the vein was examined in 1936 by Moffit (1938, p. 46) who reported galena and quartz but exposures were too badly sloughed to determine anything about the vein. Samples of float and of vein material in place contained as much as 0.01 ounce of gold per ton, trace Ag, 12.37% Pb, and 0.22% Cu (Moffit, 1932, 1938). The prospect was reexamined by WGM Inc. in their study of Ahtna Native Corporation lands (WGM, 1978). The WGM geologists reported barite and zinc (sphalerite?) in addition to the minerals previously reported ; the WGM Inc. mapping indicates the strike of the vein is subparallel to the contact of the Ahtell intrusive.
  • Age = Emplaced subseqent to or is related to the border phase of the Pennsylvanian to Permian, Ahtell pluton.

Economic information about the deposit and operations

Development status Prospect
Commodity type Metallic

Comments on exploration

  • Status = Probably inactive

Mining district

District name Chistochina

Comments on the workings information

  • Workings / Exploration = Caved open cuts.

Reference information

Bibliographic references

  • Deposit

    Moffit, F.H., 1932, The Slana District, upper Copper River region: U.S. Geological Survey Bulletin 824, p. 111-124.

  • Deposit

    Thorne, R.L., 1946, Exploration of argentiferous lead-copper deposits of the Slana district, Alaska: U.S. Bureau of Mines Report of Investigations 3940, 9 p.

  • Deposit

    Cobb, E.H., 1979, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Gulkana quadrangle, Alaska: U.S. Geological Survey Open-File Report 79-1247, 36 p.

  • Deposit

    Moffit, F.H., 1938, Geology of the Slana-Tok district, Alaska: U.S. Geological Survey Bulletin 904, 54 p.

  • Deposit

    MacKevett, E.M., Jr., and Holloway, C.D., 1977, Map showing metalliferous and selected non-metalliferous mineral deposits in the eastern part of southern Alaska: U.S. Geological Survey Open-File Report 77-169-A, 99 p., 1 sheet, scale 1:1,000,000.

  • Deposit

    Richter, D.H., and Matson, N.A., Jr., 1972, Metallic mineral resources map of the Gulkana quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-419, 1 sheet, scale 1:250,000.

Comments on the references

  • Primary Reference = Thorne, 1946

General comments

Subject category Comment text
Deposit Model Name = Polymetallic vein (Cox and Singer, 1986; model 22c)
Deposit Other Comments = Additional information can be obtained from Ahtna Minerals in Anchorage, Alaska.

Reporter information

Type Date Name Affiliation Comment
Reporter 27-NOV-00 W.T. Ellis Alaska Earth Sciences
Reporter 27-NOV-00 Hawley, C.C. Hawley Resource Group
Reporter 27-NOV-00 W.J. Nokleberg 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.