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Kasna Creek

Prospect in Alaska, United States with commodities Copper, Iron, Gold, Silver, 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. Materials information
  7. Alteration
  8. Mineral occurrence model information
  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 10308886
MRDS ID A013001
Record type Site
Current site name Kasna Creek
Alternate or previous names Barnes, Gilt Edge
Related records 10002111

Geographic coordinates

Geographic coordinates: -154.05365, 60.16043 (WGS84)
Relative position About 2.4 km upstream from mouth of Kasna Creek, on the southern edge of Kontrashibuna Lake. Locality 31 of Nelson and others (1985), locality 4 of MacKevett and Holloway (1977), locality 5 of Cobb (1972), and samples 169-184 of Eakins (1970). NE1/4SE1/4 sec. 24, T. 1 N., R. 28 W., of the Seward Meridian. Locality accurate within 300 m.

Site location context

Political divisions (FIPS codes)

Lake and Peninsula(Borough)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Lake Clark A-3(quadrangle 1:63,360 scale)

Lake Clark SE(quadrangle 1:100,000 scale)

Lake Clark C(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Lake Clark(hydrologic unit)

Kvichak-Port Heiden(hydrologic accounting unit)

Southwest(hydrologic subregion)

Alaska(hydrologic region)

Federal lands

Lake Clark National Park(National Park)

National Park NPS(Type of land area)

NPS(Federal land areas administered by NPS)

Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Copper Primary
Iron Primary
Gold Secondary
Silver Secondary
Lead Secondary
Zinc Critical Secondary

Comments on the commodity information

  • Gangue = fibrous amphibole

Materials information

Materials Type of material
Chalcopyrite Ore
Pyrite Ore
Sphalerite Ore
Calcite Gangue
Chlorite Gangue
Garnet Gangue
Quartz Gangue

Alteration

  • Unknown

Mineral occurrence model information

Model code 62
USGS model code 18d
Deposit model name Skarn Fe

Nearby scientific data

(1) -154.05365, 60.16043
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = The prospect occurs in lenticular contact-metamorphosed Upper Triassic limestone and dolomite. It consists of bedding parallel bands of skarn containing specular hematite, chalcopyrite, and lesser magnetite veinlets in amphibole-chlorite-calcite-quartz gangue. Tuffs, mafic volcanic rocks, and agglomerate occur within the limestone. Capps (1935) reported stringers of solid chalcopyrite several inches thick. The prospect consists of two ore bodies: Gilt Edge, 320 m x 76 m, to the north; and Barnes, 408 m X 12 m, to the south. The limestone and included lodes strike NE and dip NW (Berg and Cobb, 1967). Numerous trenches were dug and sampled by USBM in both ore bodies for assay analysis. Ore bodies average 0.95 precent Cu, 27.5 percent Fe, and 30.1 percent SiO2 (Warfield and Rutledge, 1951). A Tertiary, medium- to fine-grained hornblende-biotite quartz monzodiorite is nearby (Nelson and others, 1983; unit Ti2). The pluton yields concordant potassium-argon ages for hornblende and biotite of about 61 m.y. (Reed and Lanphere, 1972; 1973)
  • Age = Paleocene or younger. A quartz monzodiorite which is probably related to the deposit yields concordant potassium-argon ages for hornblende and biotite of about 61 m.y. (Reed and Lanphere, 1972; 1973).

Economic information about the deposit and operations

Development status Prospect
Commodity type Metallic

Comments on exploration

  • Status = Inactive

Mining district

District name Bristol Bay

Comments on the production information

  • Production Notes = No production

Comments on the reserve resource information

  • Reserves = Swainbank and others (1997) report reserves of over 9,070,000 tonnes of ore that grade more than 1 percent Cu.

Comments on the workings information

  • Workings / Exploration = One adit each in Gilt Edge and Barnes deposits. Numerous trenches were dug and sampled by USBM in both ore bodies for assay analysis. Ore bodies average 0.95 precent Cu, 27.5 percent Fe, and 30.1 percent SiO2 (Warfield and Rutledge, 1951). Eakins (1970) reports stream sediments samples that yield up to 2,810 ppm Cu, 150 ppm Pb, and 1,200 ppm Zn.

Reference information

Bibliographic references

  • Deposit

    Martin, G.C., and Katz, F.J., 1910, Outline of geology and mineral resources of the Iliamna and Clark lakes region: U.S. Geological Survey Bulletin 442, 426 p.

  • Deposit

    Martin, G.C., and Katz, F.J., 1912, A geologic reconnaissance of the Iliamna region, Alaska: U.S. Geological Survey Bulletin 485, 138 p.

  • Deposit

    Brooks, A.H., 1913, Mineral resources of Alaska, report on progress of investigations in 1912: U.S. Geological Survey Bulletin 542, 308 p.

  • Deposit

    Brooks, A.H., 1914, Mineral resources of Alaska in 1913: U.S. Geological Survey Bulletin 592, p. 340-341.

  • Deposit

    Capps, S.R., 1935, The southern Alaska Range: U.S. Geological Survey Bulletin 862, 101 p.

  • Deposit

    Warfield, R.S., and Rutledge, F.A., 1951, Investigations of Kasna Creek copper prospect, Lake Kontrashibuna, Lake Clark region, Alaska: U.S. Bureau of Mines Report of Investigation 4828, 10 p.

  • Deposit

    Berg, H.C., and Cobb, E.H., 1967, Metalliferous Lode Deposits of Alaska. U.S. Geological Survey Bulletin 1246, 254 p.

  • Deposit

    Reed, B.L., 1967, Results of stream sediment sampling and bedrock analyses in the eastern part of the Iliamna quadrangle, and at Kasna Creek, Lake Clark quadrangle, Alaska: U.S. Geological Survey Open-File Report 272, 18 p.

  • Deposit

    Reed, B.L., and Lanphere, M.A., 1972, Generalized geologic map of the Alaska-Aleutian range batholith showing potassium-argon ages of the plutonic rocks: U.S. Geological Survey Miscellaneous Field Studies Map MF-372, 2 sheets, scale 1:1,000,000.

  • Deposit

    Cobb, E.H., 1972, Metallic mineral map of the Lake Clark quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-378, 1 sheet, scale 1:250,000.

  • Deposit

    Reed, B. L., and Lanphere, M. A., 1973, Alaska-Aleutian Range batholith-- Geochronology, chemistry, and relation to circum-Pacific plutonism: Geological Society of America Bulletin, v. 84, no. 8, p. 2583-2610.

  • Deposit

    Cobb, E.H., 1976, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Iliamna, Lake Clark, Lime Hills, and McGrath quadrangles, Alaska: U.S. Geological Survey Open-File Report 76-485.

  • Deposit

    Detterman, R.L., and Reed, B.L., 1980, Stratigraphy, structure, and economic geology of the Iliamna quadrangle, Alaska: U.S. Geological Survey Bulletin 1368-B, 86 p.

  • Deposit

    Cobb, E.H., and Reed, B.L., 1981, Summaries of data on and lists of references to metallic and selected nonmetallic mineral occurrences in the Iliamna, Lake Clark, Lime Hills, and McGrath quadrangles, Alaska - Supplement to Open-File Report 76-485: U.S. Geological Survey Open-File Report 81-1343-A, 25 p.

  • Deposit

    Cobb, E.H., and Reed, B.L., 1981, Summaries of data on and lists of references to metallic and selected nonmetallic mineral occurrences in the Iliamna, Lake Clark, Lime Hills, and McGrath quadrangles, Alaska - Supplement to Open-File Report 76-485: U.S. Geological Survey Open-File Report 81-1343-B, 20 p.

  • Deposit

    Nokleberg, W.J., Bundtzen, T.K., Berg, H.C., Brew, D.A., Grybeck, D.J., Robinson, M.S., Smith, T.E., and Yeend, W., 1987, Significant metalliferous lode deposits and placer districts of Alaska: U.S. Geological Survey Bulletin 1786, 104 p.

  • Deposit

    Swainbank, R.C., Bundtzen, T. K., Clough A.H., and Henning, M.W., 1997, Alaska's mineral industry 1996: Alaska Division of Geological and Geophysical Surveys Special Report 51, 68 p.

  • Deposit

    Nokleberg, W.J., Bundtzen, T.K., Dawson, K.M., Eremin, R.A., Goryachev, N.A., Koch, R.D., Ratkin, V.V, Rozenblum, I.S., Shpikerman, V.I., Frolov, Y.F., Gorodinsky, M.E., Melnikov, V.D., Diggles, M.F., Ognyanov, N.V., Petrachenko, E.D., Petrochenko, R.I., Pozdeev, A.I., Ross, K.V., Wood, D.H., Grybeck, D., Khanchuck, A.I., Kovbas, L.I., Nekrasov, I.Y., and Sidorov, A.A., 1997, References for significant metalliferous and selected non-metalliferous lode mineral deposits and placer districts, and for metallogenesis of the Russian Far East, Alaska, and the Canadian Cordillera: U.S. Geological Survey Open-File Report 96-513-B, 385 p.

  • Deposit

    MacKevett, E.M., Jr., and Holloway, C.D., 1977, Map showing metalliferous mineral deposits in the western part of southern Alaska: U.S. Geological Survey Open-File Report 77-169-F, 38 p., 1 sheet, scale 1:1,000,000.

Comments on the references

  • Primary Reference = Warfield and Rutledge, 1951

General comments

Subject category Comment text
Deposit Model Name = Fe skarn; Cu skarn (Cox and Singer, 1986; models 18d and 18b)
Deposit Other Comments = Claims currently inactive, but diamond drilling between 1965 and 1970 has proved the presence of copper and iron in significant quantities (Detterman and Reed, 1980). Site is in Lake Clark National Park and Preserve.

Reporter information

Type Date Name Affiliation Comment
Reporter 15-JUN-1998 M.L. Miller; D.P. Bickerstaff 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.