Walsh Cut (alluvial placer)

Past Producer in Alaska, United States with commodities Gold, Silver, Lead, Tungsten, Antimony

Geologic information

Identification information

Deposit ID 10307998
Record type Site
Current site name Walsh Cut (alluvial placer)

Geographic coordinates

Geographic coordinates: -165.42048, 64.61108 (WGS84)
Relative position This gold-bearing alluvial fan is at the mouth of Walsh Cut (NM214), south of Sophie Gulch (NM208). The fan is as much as 500 feet long and as much as 300 feet across. Most of the fan is covered with vegetation typical of adjacent hill slopes, but the lower, sparsely vegetated fan resulted from placer mining operations at Walsh Cut (NM214). The lower fan extends almost to Rock Creek. The map site is in the north-central part of section 23, T. 10 S., R. 34 W., Kateel River Meridian. The location is accurate.
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Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Gold Primary
Silver Secondary
Lead Secondary
Tungsten Secondary
Antimony Secondary

Materials information

Materials Type of material
Arsenopyrite Ore
Galena Ore
Gold Ore
Scheelite Ore
Stibnite Ore
Scorodite Ore
Quartz Gangue

Mineral occurrence model information

Model code 119
USGS model code 39a
BC deposit profile C01. C02
Deposit model name Placer Au-PGE
Mark3 model number 54

Nearby scientific data

(1) -165.42048, 64.61108

Comments on the geologic information

  • Geologic Description = Two distinct alluvial fans have formed below the mouth of Walsh Cut (NM214). The lower fan resulted from hydraulic operations in Walsh Cut. The upper and larger fan is covered with soil and vegetation. It could have formed in part from placer mining operations, but also from natural erosion of a residual placer that was later mined in Walsh Cut. Quartz boulders locally crop out in the upper fan. These boulders contain sulfides, principally arsenopyrite and more rarely galena and stibnite. They probably also contain scheelite. The upper fan extends between elevations of 230 and 320 feet and is as much as 300 feet across; it is about 450 feet long. The lower manmade fan extends between elevations of 205 and 230 feet and is as much as 250 feet across. It is only sparsely vegetated and contains abundant boulders and cobbles of quartz and sulfides. Soil samples collected from the fans locally exceed 1 ppm gold and are strongly anomalous in arsenic and other metals.
  • Age = Holocene.

Economic information

Economic information about the deposit and operations

Development status Past Producer

Comments on exploration

  • Status = Probably inactive

Mining district

District name Nome

Comments on the reserve resource information

  • Reserves = There is a low-grade resource of gold and other metals in the fan deposits.

Comments on the workings information

  • Workings / Exploration = The core of the older deposit could have formed from the erosion of a residual placer upslope at Walsh Cut. The lower and younger fan probably formed soon after World War II.

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Alaska Resource Data File ARDF NM215

Bibliographic references

  • Deposit

    Hawley, C.C., and Hudson, T.L., 2002, Alaska Resource Data File, Nome quadrangle: U.S. Geological Survey Open-File Report 02-113, 735 p.

Comments on the references

  • Primary Reference = This report

General comments

Subject category Comment text
Deposit Model Name = Alluvial placer Au (Cox and Singer, 1986; model 39a).

Reporter information

Type Date Name Affiliation Comment
Reporter 10-JUL-00 Hawley, C.C. and Hudson, Travis L. Hawley Resource Group