Prospect in Alaska, United States with commodities Silver, Gold, Lead

Geologic information

Identification information

Deposit ID 10000164
MRDS ID A010200
Record type Site
Current site name Edelweiss
Alternate or previous names Marmot group
Related records 10137135

Geographic coordinates

Geographic coordinates: -130.35565, 56.02588 (WGS84)
Relative position The Edelweiss prospect, which was restaked in 1969 as part of the Marmot group of 51 claims (BC019), is approximately located on the boundary of Sections 25 and 26, on the southeast side of Banded Mountain at an elevation of about 4500 feet (Berg and others, 1977, p. 110 and plate 2; Elliott and Koch, 1981, p. 9, loc. 20). This location is accurate to within about a quarter of a mile.
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Geographic areas

Country State
United States Alaska


Commodity Importance
Silver Primary
Gold Primary
Lead Primary

Materials information

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


  • (Local) Local intense iron staining.

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 Sedimentary Rock > Clastic Sedimentary Rock > Argillite
    Rock unit name Hazelton Group;Hazelton Group;Hazelton Group
    Rock description Hazelton Group;Hazelton Group;Hazelton Group
    Stratigraphic age (youngest) Late Jurassic
    Stratigraphic age (youngest) Late Jurassic
  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Siltstone
    Rock unit name Hazelton Group
    Rock description Hazelton Group

Nearby scientific data

(1) -130.35565, 56.02588

Comments on the geologic information

  • Geologic Description = The country rocks in the general area of the Edelweiss prospect are recrystallized tuffaceous graywacke, slate, quartzite[?], and minor limestone of the Jurassic or older Mesozoic Hazelton Group (Buddington, 1929, p. 101; Berg and others, 1977, p. 15-17; Koch, 1996). ? the deposit consists of a quartz fissure vein about a foot thick that cuts metagraywacke and contains pyrite, pyrrhotite, and galena. A picked sample of the vein assayed 1.6 oz Au and 10.2 oz Ag per ton (Buddington, 1929, p. 110). Select grab samples collected by the U.S. Bureau of Mines in 1972 (Berg and others, 1977, p. 110-113) showed up to 15000 ppm Pb and 300 ppm Ag, but no gold.

Economic information

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 = Explored by an open cut, now partly caved.? A picked sample (Buddington, 1929, p. 110) of the vein assayed 1.6 oz Au and 10.2 oz Ag per ton. Samples collected in 1972 (Berg and others, 1977, p. 110-113) showed up to 15000 ppm Pb and 300 ppm Ag, but no gold.

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS A010200
USGS Alaska Resource Data File ARDF BC020

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

    Berg, H.C., Elliott, R.L., Smith, J.G., Pittman, T.L., and Kimball, A. L., 1977, Mineral resources of the Granite Fiords wilderness study area, Alaska, with a section on aeromagnetic data by Andrew Griscom: U.S. Geological Survey Bulletin 1403, 151 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

    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 = Berg and others, 1977

General comments

Subject category Comment text
Deposit Model Name = Polymetallic veins
Deposit Other Comments = Deposit originally staked in 1925 or 1926; more claims staked in 1928; restaked as part of Marmot group in 1969.? Site is in Misty Fiords National Monument.

Reporter information

Type Date Name Affiliation Comment
Reporter 17-MAY-1998 H. C. Berg U.S. Geological Survey