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Veleska-South

Occurrence in Alaska, United States with commodities Silver, Copper, Lead, Zinc, Bismuth, Cadmium
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Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Commodities
  6. Materials information
  7. Alteration
  8. Mineral occurrence model information
  9. Host and associated rocks
  10. Nearby scientific data
  11. Economic information about the deposit and operations
  12. Mining district
  13. Links to other databases
  14. Bibliographic references
  15. General comments
  16. Reporter information

Geologic information

Identification information

Deposit ID 10002594
MRDS ID A015031
Record type Site
Current site name Veleska-South

Geographic coordinates

Geographic coordinates: -153.64284, 62.34837 (WGS84)
Relative position The Veleska-South occurrence is located in a steep canyon near the head of Tin Creek, about 300 feet (91 m) below the snout of an active rock glacier at an elevation of 3,300 feet (1,006 m) in the NE1/4 sec. 13, T. 26 N., R. 24 W., of the Seward Meridian. The occurrence is about 5 miles (8 km) south of Veleska Lake. The reporter investigated the Veleska-South occurrence in 1981.

Site location context

Political divisions (FIPS codes)

Yukon-Koyukuk(Census area)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

McGrath B-2(quadrangle 1:63,360 scale)

McGrath SE(quadrangle 1:100,000 scale)

McGrath(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper Kuskokwim River(hydrologic accounting unit)

Southwest(hydrologic subregion)

Alaska(hydrologic region)

Federal lands

Cook Inlet Region, Incorporated(ANCSA Region)

ANCSA Region NTVPIC(Type of land area)

NTVPIC(Federal land areas administered by NTVPIC)

Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Silver Primary
Copper Primary
Lead Primary
Zinc Critical Primary
Bismuth Critical Secondary
Cadmium Secondary

Materials information

Materials Type of material
Chalcopyrite Ore
Galena Ore
Pyrite Ore
Pyrrhotite Ore
Sphalerite Ore
Epidote Gangue
Quartz Gangue

Alteration

  • (Local) Metasomatic replacement (Ca).

Mineral occurrence model information

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

Host and associated rocks

  • Host or associated Host
    Rock type Plutonic Rock

Nearby scientific data

(1) -153.64284, 62.34837
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = At the Veleska-South occurrence, thin, 0.5 to 1 inch thick seams and stockworks of pyrrhotite, pyrite, chalcopyrite and galena cut nearly flat lying, subaerial andesite and basalt flows of the Late Cretaceous (65 Ma) Veleska Lake volcanic field (Bundtzen, Kline, and Clough, 1982; Bundtzen, Harris, and Gilbert, 1997). Northwest-trending, porphyro-aphanitic, granodiorite dikes that cut the Late Cretaceous volcanics carry disseminated sulfides and may be genetically related to the stockwork mineralization. Nearby stream cobbles contain pyrrhotite with a trace of chalcopyrite and sphalerite. A major northeast trending, high angle fault that cuts the Dillinger subterrane and younger Veleska Lake volcanic field is juxtaposed against the western edge of the Veleska Lake occurrence; this structure may have developed a tensional environment suitable for sulfide stockwork formation. ? Principle sulfide mineralization consists of massive pyrrhotite and pyrite, and disseminated galena and sphalerite, and a trace of chalcopyrite. Reed and Elliott (1968, C 586) reported that selected samples contained up to 2.00 percent lead, 1.00 percent zinc, and 0.15 percent copper. Bundtzen, Kline, and Clough (1982) reported that a grab sample of nearly massive pyrrhotite contained 0.05 percent copper, 0.47 percent lead, 0.55 percent zinc, and 0.21 ounces/ton silver. Smith and Albanese (1985) reported that a grab sample of sulfide-bearing mineralization near the Veleska-South occurrence contained 0.06 percent copper, 0.84 percent lead, 1.65 percent zinc, 0.40 ounces/ton silver, and 110 ppm cadmium.

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic

Comments on exploration

  • Status = Inactive

Mining district

District name McGrath

Comments on the workings information

  • Workings / Exploration = Only surface sampling has been conducted at the Veleska-South occurrence. Reed and Elliott (1968, C 596) reported that selected samples contained up to 2.00 percent lead, 1.00 percent zinc, and 0.15 percent copper. Bundtzen, Kline, and Clough (1982) reported that a grab sample of nearly massive pyrrhotite contained 0.05 percent copper, 0.47 percent lead, 0.55 percent zinc, and 0.21 ounces/ton silver. Smith and Albanese (1985) reported that a grab sample sulfide-bearing mineralization near the Veleska South occurrence contained 0.06 percent copper, 0.84 percent lead, 1.65 percent zinc, 0.40 ounces/ton silver, and 110 ppm cadmium.

Reference information

Comments on the references

  • Primary Reference = Reed and Elliott, 1968 (C 596)

General comments

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

Reporter information

Type Date Name Affiliation Comment
Reporter 06-NOV-1998 T.K. Bundtzen Pacific Rim Geological Consulting

Beyond USGS

Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.

Maps centered on this site

Authoritative Alaska resources

These are landing pages for further research — the state agencies don't currently expose per-mine deep links.