Unnamed

Occurrence in Alaska, United States with commodities Silver, Arsenic, Lead, Copper, Antimony, Tin, Zinc

Geologic information

Identification information

Deposit ID 10308650
Record type Site
Current site name Unnamed

Geographic coordinates

Geographic coordinates: -154.55297, 63.45949 (WGS84)
Relative position This occurrence is located on southern flanks of Mystery Mountains at approximately 1,500 feet (457 m) elevation in Section 35, T. 23 S., R. 22 E., of the Kateel River Meridian. Location is imprecise and judged to be within a two mile (3.2 km) radius.
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Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Silver Primary
Arsenic Primary
Lead Primary
Copper Secondary
Antimony Secondary
Tin Secondary
Zinc Secondary

Materials information

Materials Type of material
Tourmaline Gangue

Alteration

  • Tourmaline.

Mineral occurrence model information

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

Nearby scientific data

(1) -154.55297, 63.45949

Comments on the geologic information

  • Geologic Description = Occurrence consists of tourmaline-bearing altered dacite porphyry with iron oxide spots after pyrite. Anomalous silver, lead, and arsenic values occur in grab samples; elevated levels of antimony, copper, zinc, and tin also occur. Limited assay data is provided in King and others (1980) and Patton and Moll (1983).

Economic information

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic

Comments on exploration

  • Status = Inactive

Mining district

District name McGrath

Comments on the workings information

  • Workings / Exploration = Not indicated; see Patton and Moll (1983) and King and others (1980) for analytical data.

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Alaska Resource Data File ARDF MD081

Bibliographic references

  • Deposit

    Patton, W.W., Jr., and Moll, E.J., 1983, Mineral resource assessment map of the Medfra quadrangle, Alaska: U.S. Geological Survey Open-File Report 80-811-G, 3 sheets, scale 1:250,000.

  • Deposit

    King, H.D., Risoli, D.A., Cooley, E.F., O'Leary, R.M., Speckman, W.A., Speisman, D.L., and Galland, D.W., 1980, Final results and statistical summary of analyses of geochemical samples from the Medfra quadrangle, Alaska: U.S. Geological Survey Open-File Report 80-811F, 134 pages.

Comments on the references

  • Primary Reference = Patton and Moll, 1983

General comments

Subject category Comment text
Deposit Model Name = Polymetallic Vein (Cox and Singer, 1986; model no. 22c)
Deposit Other Comments = The unamed (MD081) occurrence is on land selected or conveyed to Doyon Ltd. For further information, contact Doyon Ltd. at 210 1st Ave., Fairbanks, Alaska, 99701.

Reporter information

Type Date Name Affiliation Comment
Reporter 07-JUN-1998 Bundtzen, T.K. Pacific Rim Geological Consulting