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Lane

Prospect in Alaska, United States with commodity Gold
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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 10000947
MRDS ID A011618
Record type Site
Current site name Lane
Alternate or previous names Anchorage Gold Mines Co., Glaciers
Related records 10258294

Geographic coordinates

Geographic coordinates: -149.23463, 61.84456 (WGS84)
Relative position One mile west-northwest of headwaters of Glacier Creek, a tributary of Reed Creek. Marked with adit symbol and labeled 'Lane Prospect' on the Anchorage D-6 1:63,360-scale topographic map. Accurate within 400 ft. Locality 18 of Cobb (1972) and locality 15 of MacKevett and Holloway (1977).

Site location context

Political divisions (FIPS codes)

Matanuska-Susitna(Borough)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Anchorage D-6(quadrangle 1:63,360 scale)

Anchorage NW(quadrangle 1:100,000 scale)

Anchorage(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Lower Susitna River(hydrologic unit)

Susitna River(hydrologic accounting unit)

South Central Alaska(hydrologic subregion)

Alaska(hydrologic region)

Federal lands

Hatcher Pass Management Area-East(State Special Management Area)

State Special Management Area ST(Type of land area)

ST(Federal land areas administered by ST)

Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Gold Primary

Materials information

Materials Type of material
Gold Ore
Pyrite Ore
Quartz Gangue

Alteration

  • (Local) Wall-rock alteration within a few inches of the vein is intense, but seldom extends more than 10 to 12 inches beyond the quartz filling. Sericitization and carbonate alteration predominate, but there is some pyritization and in the outer parts of the alteration zone chloritization is present (Ray, 1954).

Mineral occurrence model information

Model code 273
USGS model code 36a
Deposit model name Low-sulfide Au-quartz vein
Mark3 model number 27

Nearby scientific data

(1) -149.23463, 61.84456
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = Quartz vein cuts tonalite of the Late Cretaceous Willow Creek Pluton. The coarse, vuggy vein is 8 inches thick and contains numerous isolated pieces of free gold (Ray, 1954). The vein trends N 25 W, and dips 35 to 38 SW, and is exposed underground for 25 ft. Gold also occurs as hairlike masses in pyrite and in a dark-gray sulfide. Wall-rock alteration within a few inches of the vein is intense, but seldom extends more than 10 to 12 inches beyond the quartz filling. Sericitization and carbonate alteration predominate, but there is some pyritization and in the outer parts of the alteration zone chloritization is present (Ray, 1954). Kurtak (1986) also reported that gold was visible in quartz float on the adit dump. A grab sample of dump float contained 9.4 ppm (0.27 oz/ton) Au and a grab sample of the vein quartz contained 2.5 ppm (0.07 oz/ton) Au. ? the Willow Creek Pluton is a zoned pluton: the outer part consists of hornblende quartz diorite and lesser hornblende tonalite; the core consists of hornblende-biotite granodiorite, and lesser hornblende-biotite quartz monzodiorite and biotite quartz monzonite.
  • Age = Late Cretaceous or younger; vein cuts the Late Cretaceous Willow Creek Pluton.

Economic information about the deposit and operations

Development status Prospect
Commodity type Metallic

Comments on exploration

  • Status = Inactive

Mining district

District name Willow Creek

Comments on the production information

  • Production Notes = No recorded production.

Comments on the workings information

  • Workings / Exploration = Prospect explored by 20 ft tunnel and an aerial tram was being installed in 1950 (Ray, 1950). Kurtak (1986) reported that gold was visible in quartz float on the adit dump. A grab sample of dump float contained 9.4 ppm (0.27 oz/ton) Au and a grab sample of the vein quartz contained 2.5 ppm (0.07 oz/ton) Au. It appears that any high grade ore that previously existed has been mined out (Kurtak, 1986).

Reference information

Bibliographic references

  • Deposit

    Chapin, Theodore, 1920, Lode developments in the Willow Creek district: U.S. Geological Survey Bulletin 712-F, p. 169-176.

  • Deposit

    Ray, R.G., 1954, Geology and ore deposits of the Willow Creek Mining district, Alaska: U.S. Geological Survey Bulletin 1004, 86 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

    Kurtak, J.M., 1986, Results of the 1984 Bureau of Mines site specific field studies within the Willow Creek mining district: U.S. Bureau of Mines Open-File Report 17-86, 17 p.

  • Deposit

    Cobb, E.H., 1972, Metallic mineral resources map of the Anchorage quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-409, 1 sheet, scale 1:250,000.

  • 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.

  • Deposit

    Cobb, E.H., 1979, Summary of references to mineral occurrences (other than mineral fuels and construction materials in the Anchorage quadrangle, Alaska: U.S. Geological Survey Open-File Report 79-1095, 184 p.

Comments on the references

  • Primary Reference = Ray, 1954

General comments

Subject category Comment text
Deposit Model Name = Low-sulfide Au-quartz veins (Cox and Singer, 1986; model 36a)

Reporter information

Type Date Name Affiliation Comment
Reporter 30-JUL-1998 D.P. Bickerstaff U.S. Geological Survey
Reporter 30-JUL-1998 S.W. Huss U.S. Geological Survey

Beyond USGS

Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.

External references

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.