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Butte

Prospect in Alaska, United States with commodities Silver, Gold, Lead, Tungsten
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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. 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 10308776
MRDS ID A010231
Record type Site
Current site name Butte
Alternate or previous names Brigadier, Hyder Butte
Related records 10000195

Geographic coordinates

Geographic coordinates: -130.06875, 56.01647 (WGS84)
Relative position The Brigadier prospect is in Section 35 near its western boundary at an elevation of about 650 feet on a west-facing mountainside overlooking the Salmon River about 0.7 mile below its confluence with Texas Creek. It is about 0.1 mile east of the Salmon River road (Elliott and Koch, 1981, p. 18, loc. 73). The location is accurate within about 0.2 mile. Also see Additional Comments field, below.

Site location context

Political divisions (FIPS codes)

Prince of Wales-Hyder(Census area)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

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

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

Bradfield Canal(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Southern 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
Silver Primary
Gold Primary
Lead Primary
Tungsten Critical Secondary

Materials information

Materials Type of material
Galena Ore
Pyrite Ore
Scheelite Ore
Quartz Gangue

Mineral occurrence model information

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

Nearby scientific data

(1) -130.06875, 56.01647
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = The country rock in the area of this prospect is the Triassic Texas Creek Granodiorite, which underlies and locally intrudes pelitic metasedimentary and subordinate andesitic (greenstone) metavolcanic strata of the Jurassic or older Mesozoic Hazelton Group; and the Eocene Hyder Quartz Monzonite, which intrudes the Hazelton and Texas Creek rocks (Smith, 1977, Koch, 1996). The deposit (Buddington, 1929, p. 81) consists of quartz fissure veins in granodiorite that contain galena and pyrite. There are two main veins, each 10 inches to 3 feet thick, that have been traced in outcrop for 400-500 feet. Early assays of two samples showed 11.4-14.1% Pb, and 0.24-0.6 oz Au and 10.2-20.6 oz Ag per ton. Byers and Sainsbury (1956, p. 140) report that the veins also contain rare grains of scheelite. Maas and others (1995, p. 254) suggest that the age of the Brigadier deposit is Eocene, based on similarities in mineralogy, structural setting, and hostrock, to isotopically dated Eocene deposits in the Hyder district (see, for example, BC086). If so, the age of the deposit is contemporaneous with emplacement of the Hyder Quartz Monzonite.
  • Age = Maas and others (1995, p. 254) suggest that the age of the Brigadier deposit is Eocene, based on similarities in mineralogy, structural setting, and hostrock, to isotopically dated Eocene deposits in the Hyder district (see, for example, BC086). If so, the age of the deposit is contemporaneous with emplacement of the Hyder Quartz Monzonite.

Economic information about the deposit and operations

Development status Prospect
Commodity type Metallic

Comments on exploration

  • Status = Inactive

Mining district

District name Hyder

Comments on the workings information

  • Workings / Exploration = Prospect was explored by opencuts and a 25-foot shaft, probably in the early 1920's. Early assays of two samples of sulfide-bearing quartz veins showed 11.4-14.1% Pb, and 0.24-0.6 oz Au and 10.2-20.6 oz Ag per ton.

Reference information

Bibliographic references

  • Deposit

    Buddington, A.F., 1929, Geology of Hyder and vicinity, southeastern Alaska, with a reconnaissance of Chickamin River: U.S. Geological Survey Bulletin 807, 124 p.

  • Deposit

    Byers, F.M., and Sainsbury, C.L., 1956, Tungsten deposits of the Hyder district, Alaska: U.S. Geological Survey Bulletin 1024-F, p. 123-140.

  • Deposit

    Smith, J.G., 1977, Geology of the Ketchikan D-1 and Bradfield Canal A-1 quadrangles, Alaska: U.S. Geological Survey Bulletin 1425, 49 p.

  • Deposit

    Cobb, E.H., 1978, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Bradfield Canal quadrangle, Alaska: U.S. Geological Survey Open-File Report 78-922, 98 p.

  • Deposit

    Elliott, R.L., and Koch, R.D., 1981, Mines, prospects, and selected metalliferous mineral occurrences in the Bradfield Canal quadrangle, Alaska: U.S. Geological Survey Open-File Report 81-728-B, 23 p., 1 sheet, scales 1:250,000 and 1:63,360.

  • Deposit

    Maas, K.M., Bittenbender, P E., and Still, J.C., 1995, Mineral investigations in the Ketchikan mining district, southeastern Alaska: U.S. Bureau of Mines Open-File Report 11-95, 606 p.

  • Deposit

    Koch, R.D., 1996, Reconnaissance geologic map of the Bradfield Canal quadrangle, southeastern Alaska: U.S. Geological Survey Open-File Report 81-728-A, 35 p., 1 sheet, scale 1:250,000.

Comments on the references

  • Primary Reference = Buddington, 1929

General comments

Subject category Comment text
Deposit Model Name = Polymetallic veins
Deposit Other Comments = The prospect probably was originally staked in the early 1920's. Early reports describing the Brigadier property also refer to the Butte (Buddington, 1929, p. 81) and Hyder Butte (Cobb, 1978, p. 13, 92) claims.

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.