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Rapid River bend

Occurrence in Alaska, United States with commodities Molybdenum, Lead, Tin, Uranium, Silver, Boron-Borates, Beryllium, Bismuth, Copper, 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. Nearby scientific data
  9. Economic information about the deposit and operations
  10. Mining district
  11. Links to other databases
  12. Bibliographic references
  13. General comments
  14. Reporter information

Geologic information

Identification information

Deposit ID 10003339
MRDS ID A106083
Record type Site
Current site name Rapid River bend

Geographic coordinates

Geographic coordinates: -141.28305, 67.57987 (WGS84)
Relative position Location plotted is locality 4 of Barker (1981, p. 25). Anomalous area is approximately 1 mi (1.6 km) N-S x 2 mi (3.2 km) E-W and centered on this ridge. Does not include locations called VABM Orphan, VABM Orphan, or placer localities mentioned in Barker (1981). Located to within 1 mi (1.6 km).

Site location context

Political divisions (FIPS codes)

Yukon-Koyukuk(Census area)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Coleen C-1(quadrangle 1:63,360 scale)

Coleen NE(quadrangle 1:100,000 scale)

Coleen(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Alaska(hydrologic region)

Federal lands

Arctic National Wildlife Refuge(National Wildlife Refuge)

National Wildlife Refuge FWS(Type of land area)

FWS(Federal land areas administered by FWS)

Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Molybdenum Primary
Lead Primary
Tin Critical Primary
Uranium Primary
Silver Secondary
Boron-Borates Secondary
Beryllium Critical Secondary
Bismuth Critical Secondary
Copper Secondary
Zinc Critical Secondary

Materials information

Materials Type of material
Arsenuranylite Ore
Uranophane Ore
Xenotime Ore
Metatorbernite Ore
Goethite Gangue
Hematite Gangue
Quartz Gangue

Alteration

  • (Local) Muscovite/sericite and tourmaline are common in granodiorite/granite and aplite. Some chloritization of biotite.

Nearby scientific data

(1) MDgi
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = Rubble of several phases of Old Crow batholith includes 2-mica granite, aplites and granodiorite. Area has hematite and secondary uranium minerals in quartz vein and brecia float, a radon gas anomaly, and associated rock and soil anomalies.

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic

Comments on exploration

  • Status = Inactive

Mining district

District name Sheenjek

Comments on the workings information

  • Workings / Exploration = Sample of quartz vein float contain up to 2.8 ppm Ag, >2000 ppm B, 50 ppm Be, 70 ppm Bi, 280 ppm Cu, 70 ppm Mo, 3300 ppm Pb, 300 ppm Sn, 1600 ppm U and 1500 ppm Zn. Soil samples contain up to 3100 ppm Pb, 3100 ppm Zn and 120 ppm U (Barker, 1981, p.90-95).

Reference information

Bibliographic references

  • Deposit

    Barker, J.C., and Clautice, K.H., 1978, Mineral reconnaissance of the Porcupine River region: a summary report: U.S. Bureau of Mines Open-File Report 87-78, 20 p.

  • Deposit

    Barker, J.C., 1981, Mineral investigations in the Porcupine River drainage, Alaska: U.S. Bureau of Mines Open-File Report 27-81, 189 p., 2 sheets.

Comments on the references

  • Primary Reference = Barker (1981)

General comments

Subject category Comment text
Deposit Model Name = Lode; felsic plutonic-associated Sn, Mo, U, +W and base metals, possible veins, greisens and porphyry deposits.
Deposit Other Comments = This area is just south and east of > 38.5 square mi (100 square km) of creek drainages containing variable to abundant cassiterite, monazite, ilmenite and allanite, and variable scheelite, powellite, molybdenite and chromite in sluice samples. Also, see MAS/MILS Sequence # 0020330009 (USBM, 1995)

Reporter information

Type Date Name Affiliation Comment
Reporter 15-OCT-1992 J.M. Schmidt 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.