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  2. Online Spatial Data
  3. Mineral Resource Data System (MRDS)

Jago River

Occurrence in Alaska, United States with commodity Copper
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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. Host and associated rocks
  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 10003109
MRDS ID A015641
Record type Site
Current site name Jago River

Geographic coordinates

Geographic coordinates: -143.60338, 69.27989 (WGS84)
Relative position Accurate to within 1,525 meters (5,000 ft). Brosge' and Reiser, 1976, Locality 38 and Grybeck, 1977, p. 42, Locality 7.

Site location context

Political divisions (FIPS codes)

North Slope(Borough)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

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

Demarcation Point SW(quadrangle 1:100,000 scale)

Demarcation Point(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Camden Bay(hydrologic unit)

Eastern Arctic(hydrologic accounting unit)

Arctic Alaska(hydrologic subregion)

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
Copper Primary

Materials information

Materials Type of material
Azurite Ore
Malachite Ore

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Granitoid > Granite
  • Host or associated Host
    Rock type Metamorphic Rock > Hornfels

Nearby scientific data

(1) -143.60338, 69.27989
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = Malachite and azurite are present in calcareous hornfels adjacent to the Jago stock. The host rock is Cambrian sandstone near contact with the granite.??An isolated stock of granite of Early Devonian age intrudes the Neroukpuk Schist of Leffingwell (1919) near the headwaters of the Jago River; although not so indicated on the geologic map of Reiser and others (1980), this probably the is Jago stock as described here. The same map unit, the Neroukpuk Schist of Leffingwell (1919) was examined along the U.S.-Canada border where it consists of arkosic sandstone in which labile clasts including most of the potassium feldspar grains have been altered to white micas, quartz, other minerals (Kelley and others, 1995). This same unit likely is Cambrian in age along the border (Lane and othes, 1995) rather than Precambrian as indicated by Reiser and others (1980) (Lane and others, 1995).
  • Age = Probably Early Devonian

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic

Comments on exploration

  • Status = Inactive

Mining district

District name Canning

Reference information

Bibliographic references

General comments

Subject category Comment text
Deposit Model Name = Lode; disseminated, possibly skarn

Reporter information

Type Date Name Affiliation Comment
Reporter 13-SEP-1996 Powers, M.T. U.S. Geological Survey
Reporter 13-SEP-1996 Huber, D.F. U.S. Geological Survey
Reporter 13-SEP-1996 Kelley, J.S. 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.