Unnamed (Sledge Creek)

Occurrence in Alaska, United States with commodity Gold

Geologic information

Identification information

Deposit ID 10307978
Record type Site
Current site name Unnamed (Sledge Creek)

Geographic coordinates

Geographic coordinates: -165.51378, 64.63328 (WGS84)
Relative position Sledge Creek is a west tributary to Snake River; this location is on the ridge crest south of Sledge Creek at an elevation of about 420 feet and about 700 feet upslope of a water ditch. A quartz-feldspar vein and nearby prospect pits are present. It is in the east-central part of section 6, T. 10 S., R. 34 W., Kateel River Meridian.
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Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Gold Primary

Materials information

Materials Type of material
Limonite Ore
Feldspar Gangue
Quartz Gangue

Mineral occurrence model information

Model code 273
USGS model code 36a
Deposit model name Low-sulfide Au-quartz vein
Mark3 model number 27

Nearby scientific data

(1) -165.51378, 64.63328

Comments on the geologic information

  • Geologic Description = Quartz-feldspar veins crop out south of Sledge Creek just upstream of where Sledge Creek enters onto the Snake River valley and about 700 feet upslope from a water ditch. This occurrence appears to be similar to a quartz-feldspar vein described by Cathcart on the north side of Sledge Creek (Cathcart, 1922, p. 249, figure 19, location 2), who also identified feldspar at the occurrence on the north side of Sledge Creek as orthoclase, probably because of its nearly euhedral platy form. The feldspar is probably albite or a sodic oligoclase similar to the platy feldspar found abundantly at the Alpha Ridge prospect (NM171) about a half mile south of this occurrence. Sulfides were not observed by Cathcart, but the vein was iron-stained. Similar nearby quartz-feldspar veins are gold bearing.
  • Age = Mid-Cretaceous or younger; cross cuts metamorphic rocks of that age.

Economic information

Economic information about the deposit and operations

Development status Occurrence

Comments on exploration

  • Status = Inactive

Mining district

District name Nome

Comments on the workings information

  • Workings / Exploration = The veins were explored by shallow pits, some of which were excavated before Cathcart's visit in 1920.

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Alaska Resource Data File ARDF NM170

Bibliographic references

  • Deposit

    Cathcart, S.H., 1922, Metalliferous lodes in southern Seward Peninsula: U.S. Geological Survey Bulletin 722, p. 163-261.

Comments on the references

  • Primary Reference = Cathcart, 1922

General comments

Subject category Comment text
Deposit Model Name = Low-sulfide Au-quartz vein? (Cox and Singer, 1986; model 36a).

Reporter information

Type Date Name Affiliation Comment
Reporter 12-MAR-00 Hawley, C.C. and Hudson, Travis L. Hawley Resource Group