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Unnamed (upper Peace River)

Occurrence in Alaska, United States with commodities Silver, Gold, Copper, Molybdenum, Lead, Tungsten, Bismuth, Chromium, Zinc
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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. Nearby scientific data
  10. Economic information about the deposit and operations
  11. Mining district
  12. Links to other databases
  13. Bibliographic references
  14. General comments
  15. Reporter information

Geologic information

Identification information

Deposit ID 10308796
MRDS ID A013495
Record type Site
Current site name Unnamed (upper Peace River)
Related records 10002552

Geographic coordinates

Geographic coordinates: -161.08232, 65.4524 (WGS84)
Relative position This occurrence is at an elevation of about 750 feet in the headwaters of Peace River. The site is in the SW1/4 of section 25, T. 1 N., R. 12 W., of the Kateel River Meridian. Miller and Elliot (1969), figure 7, location 3 and Cobb, 1972 (MF-389), locations 16 and 34.

Site location context

Political divisions (FIPS codes)

Northwest Arctic(Borough)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Candle B-5(quadrangle 1:63,360 scale)

Candle S(quadrangle 1:100,000 scale)

Candle(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Norton Bay(hydrologic unit)

Norton Sound(hydrologic accounting unit)

Northwest(hydrologic subregion)

Alaska(hydrologic region)

Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Silver Primary
Gold Primary
Copper Primary
Molybdenum Primary
Lead Primary
Tungsten Critical Primary
Bismuth Critical Secondary
Chromium Critical Secondary
Zinc Critical Secondary

Comments on the commodity information

  • Ore Material = uranothorianite

Materials information

Materials Type of material
Chalcopyrite Ore
Chromite Ore
Gold Ore
Molybdenite Ore
Pyrite Ore
Scheelite Ore
Sphalerite Ore
Fluorite Gangue
Hematite Gangue
Magnetite Gangue
Quartz Gangue

Alteration

  • Syenite oxidized where cut by pyrite-quartz veins.

Mineral occurrence model information

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

Nearby scientific data

(1) -161.08232, 65.4524
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = The upper Peace River area is underlain by a small satellitic stock of the Late Cretaceous Granite Mountain pluton. The stock is composed of several varieties of syenite. Locally the syenite is cut by quartz veins and contains abundant disseminated pyrite cubes, some fine-grained molybdenite, and abundant magnetite and purple fluorite. A canary-yellow alteration product found both in the veins and in the syenites was identified as ferromolybdenite. The syenite is bleached, oxidized and contains disseminated pyrite, and where it is cut by quartz-pyrite veins, occasional molybdenite. The syenite and associated quartz veins locally contain anomalous amounts of molybdenum, bismuth, silver, copper and lead. Numerous rock and soil samples were collected from this area by Miller and Elliott (1969). One rock sample (location 3) contained: 150 ppm Ag, 30 ppm Mo, 3,000 ppm Pb, 700 ppm Cu, and 0.04 ppm Au. Another rock sample (location 6) contained: 1.5 ppm Ag, greater than 2,000 ppm Mo, 500 ppm Cu, and 300 ppm Pb. Both were grab samples of oxidized syenite. Gault and others (1953) collected pan concentrate stream-sediment samples from this area in their search for uranium. Their samples contained anomalously high concentrations of uranothorianite and other metallic minerals, including galena, chalcopyrite, bornite, tetradymite, sphalerite, pyrite, and pyrrhotite. Intergrowths of galena, sphalerite, chalcopyrite, pyrite, and gummite were observed in some mineral grains. The mineral associations suggest that the uranium minerals are derived from a sulfide-bearing lode (or vein), rather than occurring as accessory minerals within granitic rocks.
  • Age = Late Cretaceous.

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic

Comments on exploration

  • Status = Inactive

Mining district

District name Fairhaven

Comments on the workings information

  • Workings / Exploration = The area has been mapped by the U.S. Geological Survey and examined by various exploration companies.

Reference information

Bibliographic references

Comments on the references

  • Primary Reference = Miller and Elliott, 1969

General comments

Subject category Comment text
Deposit Model Name = Polymetallic sulfides associated with small syenite stocks.

Reporter information

Type Date Name Affiliation Comment
Reporter 12-JAN-00 Williams, Anita U.S. Geological Survey

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.