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Unnamed (south of Windy Creek)

Occurrence in Alaska, United States with commodities Copper, Silver
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Geologic information

Identification information

Deposit ID 10307524
Record type Site
Current site name Unnamed (south of Windy Creek)

Geographic coordinates

Geographic coordinates: -149.12284, 63.4596 (WGS84)
Relative position This occurrence is at an elevation of about 3,900 feet, about 0.6 mile southwest of Windy Creek changes from east to southeast. The site is at the NE corner of sec. 8, T. 17 S., R. 8 W., of the Fairbanks Meridian. The location is accurate to within 3000 feet. This is location 2 of Hickman and Craddock (1976).
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Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Copper Primary
Silver Secondary

Materials information

Materials Type of material
Chalcopyrite Ore
Malachite Ore
Calcite Gangue
Diopside Gangue
Wollastonite Gangue

Alteration

  • (Local) Weathering of skarn to produce secondary iron and copper minerals.

Mineral occurrence model information

Model code 59
USGS model code 18b
Deposit model name Skarn Cu
Mark3 model number 8

Nearby scientific data

(1) -149.12284, 63.4596
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Comments on the geologic information

  • Geologic Description = The country rocks in the area of this occurrence are Devonian to Ordovician interbedded argillite and limestone, intruded by small plugs of Upper Cretaceous to Lower Tertiary quartz diorite. The occurrence consists of chalcopyrite-bearing skarn zones adjacent to the stocks. Weathering zones has produced limonite gossan and malachite. Samples contain 1,900 ppm copper and 0.6 ppm silver (Hickman and Craddock, 1976).
  • Age = Probably Late Cretaceous or younger.

Economic information

Economic information about the deposit and operations

Development status Occurrence

Comments on exploration

  • Status = Inactive

Mining district

District name Bonnifield

Comments on the workings information

  • Workings / Exploration = Surface sampling only. Samples contain 1,900 ppm copper and 0.6 ppm silver (Hickman and Craddock, 1976).

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Alaska Resource Data File ARDF HE078

Bibliographic references

  • Deposit

    Hickman, R.G., and Craddock, Campbell, 1976, Mineral occurrences near Cantwell, southcentral Alaska: Alaska Division of Geological & Geophysical Surveys Special Report 13, 7 p.

Comments on the references

  • Primary Reference = Hickman and Craddock, 1976

General comments

Subject category Comment text
Deposit Model Name = Cu skarn (Cox and Singer, 1986; model 18b)

Reporter information

Type Date Name Affiliation Comment
Reporter 07-APR-00 N. Van Wyck Stevens Exploration Management Corporation