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Unnamed (lode in lower Rock Creek)

Occurrence in Alaska, United States with commodities Gold, Silver, Tungsten
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Geologic information

Identification information

Deposit ID 10307999
Record type Site
Current site name Unnamed (lode in lower Rock Creek)

Geographic coordinates

Geographic coordinates: -165.43528, 64.60448 (WGS84)
Relative position This occurrence is on the southeast side of Rock Creek, about 600 feet upstream of the Snake River road crossing. Rock Creek is an east tributary to Snake River with headwaters on the south flank of Mount Byrnteson. The map location is just inside the west-central border of section 23, T. 10 S., R. 34 W., Kateel River Meridian. It is locality 30 of Hummel (1962 [MF 247]) locality 24 of Hummel (1962 [MF 243]) is also included here.
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Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Gold Primary
Silver Secondary
Tungsten Secondary

Materials information

Materials Type of material
Arsenopyrite Ore
Gold Ore
Pyrite Ore
Scheelite Ore
Albite Gangue
Quartz Gangue

Alteration

  • (Local) Albitization and silicification.

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) -165.43528, 64.60448
ListMap

Comments on the geologic information

  • Geologic Description = A massive quartz vein, as much as 4 feet wide, is exposed on the southeast side of Rock Creek about 600 feet upstream of the Snake River road (Hummel, 1962 [MF 247, locality 30]). Exposures on the south bank of Rock Creek between the quartz vein and the road locally also contain pyrite-arsenopyrite-bearing quartz veins (Hummel, 1962 [MF 247, locality 24]). These occurrences are separated from numerous other mineral deposits in the Rock Creek area by the Mount Brynteson fault. Hummel (1962 [MF 247]) mapped this nearly north-striking fault about one-half mile west of Mount Brynteson. The fault apparently continues southward to the Snake River flood plain. It also appears to have controlled the course of strongly linear Bergstrom Gulch. Hummel (1962 [MF 247]) reported the presence of gold and scheelite; arsenopyrite and pyrite are also present. Kennecott Exploration Company drilled two shallow reverse circulation holes in this area in 1994 or 1995 but found only low gold values.
  • Age = Mid-Cretaceous; veins cross cut regionally metamorphosed schist; see NM207.

Economic information

Economic information about the deposit and operations

Development status Occurrence

Comments on exploration

  • Status = Probably inactive

Mining district

District name Nome

Comments on the workings information

  • Workings / Exploration = Quartz veins and sulfidized schist were explored by trenches and shallow shafts probably before 1920. Two prospects in the area between the Mount Brynetson fault and the Glacier Creek road were noted by Hummel (1962, localities 24 and 30). The area was soil sampled by BHP in 1989; it is within the extensive arsenic-gold anomaly that extends almost continuously from Glacier Creek to north of Lindblom Creek. Kennecott Exploration Company drilled two reconnaissance reverse circulation holes in this area in 1995 but found only low gold values.

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Alaska Resource Data File ARDF NM216

Bibliographic references

  • Deposit

    Hummel, C.L., 1962, Preliminary geologic map of the Nome C-1 quadrangle, Seward Peninsula, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-247, 1 sheet, scale 1:63,360.

Comments on the references

  • Primary Reference = This report

General comments

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

Reporter information

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