Roth and Johnson

Occurrence in Alaska, United States with commodity Gold

Geologic information

Identification information

Deposit ID 10003424
MRDS ID A106181
Record type Site
Current site name Roth and Johnson
Alternate or previous names Fiord #1 and #2

Geographic coordinates

Geographic coordinates: -148.2726, 61.03956 (WGS84)
Relative position Northwest of Mount Doran, near toe of Toboggan Glacier. Accurate within 2,000 ft (?). Locality A-36 of Jansons and others (1984).
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Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Gold Primary

Materials information

Materials Type of material
Arsenopyrite Ore
Chalcopyrite Ore
Galena Ore
Pyrite Ore
Quartz Gangue

Mineral occurrence model information

Model code 274
USGS model code 36a.1
Deposit model name Low-sulfide Au-quartz vein, Chugach-type
Mark3 model number 26

Nearby scientific data

(1) -148.2726, 61.03956

Comments on the geologic information

  • Geologic Description = A quartz vein reportedly occurs between two felsic dikes in Late Cretaceous Valdez Group black slate and metasandstone. The vein is 30 inches wide, traceable for 600 ft, and contains pyrite, arsenopyrite, chalcopyrite, and galena (Roehm, 1938).
  • Age = Late Cretaceous or younger; vein occurs between two felsic dikes in black slates and metasandstones of the Late Cretaceous Valdez Group.

Economic information

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic

Comments on exploration

  • Status = Inactive

Mining district

District name Prince William Sound

Comments on the workings information

  • Workings / Exploration = Unknown

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS A106181
USGS Alaska Resource Data File ARDF AN117

Bibliographic references

  • Deposit

    Roehm, J.C., 1938, Summary report of mining investigations in the Port Wells District, Prince William Sound, Alaska: Alaska Territorial Department of Mines Itinerary Report 85-03, 9 p.

  • Deposit

    Jansons, Uldis, Hoekzema, R.B., Kurtak, J.M., and Fechner, S.A., 1984, Mineral occurrences in the Chugach National Forest, Southcentral Alaska: U.S. Bureau of Mines Open-File Report 5-84, 218 p., 2 sheets, scale 1:250,000.

Comments on the references

  • Primary Reference = Roehm, 1938

General comments

Subject category Comment text
Deposit Model Name = Chugach-type low-sulfide Au-quartz veins (Bliss, 1992; model 36a.1)
Deposit Other Comments = Janson and others (1984) could not locate the occurrence described by Roehm in 1938. However, placer gold and sufides occur in the vicinity.

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