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Jerry Creek (BT claim group)

Prospect in Alaska, United States with commodities Silver, Copper, 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. 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 10308760
MRDS ID AO11915
Record type Site
Current site name Jerry Creek (BT claim group)

Geographic coordinates

Geographic coordinates: -155.96044, 67.12456 (WGS84)
Relative position The Jerry Creek (BT) prospect is at an elevation of about 3100 feet on a ridge northwest of Avaraart Lake. It is in the N1/2 of sec. 23, T. 20 N., R. 13 E., of the Kateel River Meridian. The location is accurate to within 1000 ft. The site corresponds to locality 58 of Grybeck and Nelson (1981).

Site location context

Political divisions (FIPS codes)

Northwest Arctic(Borough)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Survey Pass A-6(quadrangle 1:63,360 scale)

Survey Pass S(quadrangle 1:100,000 scale)

Survey Pass(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper Kobuk River(hydrologic unit)

Kobuk-Selawik Rivers(hydrologic accounting unit)

Northwest(hydrologic subregion)

Alaska(hydrologic region)

Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Silver Primary
Copper Primary
Lead Primary
Zinc Critical Primary

Materials information

Materials Type of material
Chalcopyrite Ore
Galena Ore
Pyrite Ore
Sphalerite Ore
Actinolite Gangue
Calcite Gangue
Epidote Gangue
Garnet Gangue
Quartz Gangue

Mineral occurrence model information

Model code 184
USGS model code 28a
Deposit model name Massive sulfide, kuroko
Mark3 model number 93

Host and associated rocks

  • Host or associated Host
    Rock type
    Stratigraphic age (youngest) Mississippian
    Stratigraphic age (oldest) Devonian

Nearby scientific data

(1) -155.96044, 67.12456
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = The Jerry Creek (BT) deposit consists of stratiform, fine-grained, weakly disseminated pyrite, sphalerite, and chalcopyrite that occur over a strike distance of at least 3600 ft. The BT claim group covers three fault-bounded blocks of pelitic, volcanic, and carbonate strata which have under gone two major folding events accompanied by synkinematic metamorphism. The northern fault block consists of pelitic schist that grades upward to calcareous schist and marble; it contains a of 30-60-foot-thick horizon of intercalated feldspathic, calcareous, and graphitic pelitic schist, along with compositionally banded layers of quartz, actinolite, epidote, garnet, calcite, apatite, and actinolite. The sulfides are disseminated in the feldspathic schists and in the compositionally banded rock (Hitzman, 1978). Selected samples contain up to 0.72 percent Cu, 2.15 percent Zn, and 0.40 oz Ag/ton. BT is one of several volcanogenic deposits in the Ambler schist belt along the south flank of the Brooks Range. These deposits may be part of a rifted continental margin (Schmidt, 1981).
  • Age = Host rock is Devonian-Mississippian.

Economic information about the deposit and operations

Development status Prospect
Commodity type Metallic

Comments on exploration

  • Status = Inactive

Mining district

District name Shungnak

Comments on the workings information

  • Workings / Exploration = Some unpublished detailed mapping and surface sampling by industry.

Reference information

Bibliographic references

  • Deposit

    Hitzman, M.W., 1978, Geology of the BT claim group, southwestern Brooks Range, Alaska: University of Washington, Seattle, M.Sc. thesis, 80 p.

  • Deposit

    Hitzman, M.W., 1980, Geology of the BT claim group, southwestern Brooks Range, Alaska, in Silberman, M.L., Field, C.W., Berry, A.L., eds, Proceedings of the symposium on mineral deposits of the Pacific Northwest: U.S. Geological Survey Open-File Report 81-355, p. 17-35.

  • Deposit

    Grybeck, D.J., and Nelson, S.W., 1981, Mineral deposit map of the Survey Pass quadrangle, Brooks Range, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-1176-F, 1 sheet, scale 1:250,000.

  • Deposit

    Schmidt, J.M., 1981, Volcanogenic massive sulfide deposition in a rifted continental margin: The Arctic Camp deposit, southwestern Brooks Range, Alaska [abs.]: Geological Society of America Annual Meeting, Program with Abstracts, v. 13, p. 548.

Comments on the references

  • Primary Reference = Hitzman, 1978

General comments

Subject category Comment text
Deposit Model Name = Kuroko massive sulfide (Cox and Singer, 1986; model 28a)

Reporter information

Type Date Name Affiliation Comment
Reporter 22-SEP-1999 S.W. Nelson (Anchorage, Alaska) 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.