Unnamed (near Mt. Distin)

Occurrence in Alaska, United States with commodities Gold, Copper, Arsenic

Geologic information

Identification information

Deposit ID 10308447
Record type Site
Current site name Unnamed (near Mt. Distin)

Geographic coordinates

Geographic coordinates: -152.58079, 62.0905 (WGS84)
Relative position Alaska Department of Natural Resources unpublished claim records show this locality, about one mile N10E of Distin Peak in the southeast quarter of Section 9, T. 23 N., R. 18 W., of the Seward Meridian.
(click for info)

Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Gold Primary
Copper Primary
Arsenic Secondary

Materials information

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

Alteration

  • (Local) Quartz alteration.

Mineral occurrence model information

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

Nearby scientific data

(1) -152.58079, 62.0905

Comments on the geologic information

  • Geologic Description = A small plug of Late Cretaceous (67 m.y.) diorite, assigned to the Kichatna plutons (TKk), intrudes Mesozoic flysch (KJs) in this area (Reed and Nelson, 1980). Cominco American Incorporated (unpublished report) describes vuggy veins, veinlets, and breccia of quartz-pyrrhotite- pyrite-chalcopyrite-and/or arsenopyrite that cut both the sedimentary and intrusive rocks. A similar occurrence is noted in Old Man Creek (TY026) in the Tyonek quadrangle.
  • Age = Late Cretaceous; mineralization is interpreted to be linked to the Late Cretaceous diorite that is mapped as one of the 67 m.y. old Kichatna plutons by Reed and Nelson (1980).

Economic information

Economic information about the deposit and operations

Development status Occurrence

Comments on exploration

  • Status = Inactive

Mining district

District name Yentna

Comments on the workings information

  • Workings / Exploration = Prospecting, silt and rock chip geochemistry and mapping at 1:12,000 scale by Cominco American Incorporated in the late 1980s.

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Alaska Resource Data File ARDF TL062

Bibliographic references

  • Deposit

    Reed, B.L., and Nelson, S.W., 1980, Geologic map of the Talkeetna quadrangle: U.S. Geological Survey Miscellaneous Investigations Map I-1174, scale 1:250,000.

Comments on the references

  • Primary Reference = This record

General comments

Subject category Comment text
Deposit Model Name = Polymetallic veins (Cox and Singer, 1986; model 22c).

Reporter information

Type Date Name Affiliation Comment
Reporter 10-AUG-98 Madelyn A. Millholland Millholland & Associates