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

Johns Creek

Occurrence in Alaska, United States with commodities Gold, Copper
Map
XML
JSON
KML
C
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 10001795
MRDS ID A012601
Record type Site
Current site name Johns Creek

Geographic coordinates

Geographic coordinates: -164.32717, 64.7382 (WGS84)
Relative position This occurrence is in bedrock near the mouth of Johns Creek. Johns Creek is a west tributary to Solomon River; its mouth is 1,500 feet downstream from the mouth of Coal Creek. This is locality 10 of Asher (1969, DGGS R33) who shows it to be on the north side of the mouth of Johns Creek. Asher (1969, DGGS R33) also shows undefined disseminated mineralization to be present in bedrock on the south side of the mouth of Johns Creek.

Site location context

Political divisions (FIPS codes)

Nome(Census area)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Solomon C-5(quadrangle 1:63,360 scale)

Solomon NW(quadrangle 1:100,000 scale)

Solomon(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Nome(hydrologic unit)

Norton Sound(hydrologic accounting unit)

Northwest(hydrologic subregion)

Alaska(hydrologic region)

Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Gold Primary
Copper Primary

Materials information

Materials Type of material
Chalcopyrite Ore
Pyrite Ore
Quartz Gangue

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Schist
    Rock unit name Solomon Schist; Quartz-Rich Pelitic Schist, Minor Calc-Schist
    Rock description Solomon Schist; Quartz-Rich Pelitic Schist, Minor Calc-Schist
    Stratigraphic age (youngest) Late Cambrian

Nearby scientific data

(1) -164.32717, 64.7382
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = The metasedimentary schist bedrock is highly fractured and jointed. Quartz lenses and stringers containing pyrite and minor chalcopyrite fill fractures. A sample from a 1- by 5-foot quartz lense contained 0.18 percent Cu and traces of Pb, Zn, and Au (Asher, 1969, DGGS R33, p. 20). Bedrock in the area is part of a lower Paleozoic metasedimentary assemblage (Till and others, 1986).
  • Age = Cretaceous or younger; the quartz veins apparently fill fractures that postdate mid-Cretaceous regional metamorphism.

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic

Comments on exploration

  • Status = Inactive

Mining district

District name Nome

Comments on the workings information

  • Workings / Exploration = No workings are known.

Reference information

Bibliographic references

Comments on the references

  • Primary Reference = Asher, 1969 (DGGS R33)

General comments

Subject category Comment text
Deposit Model Name = Quartz lenses and stringers along fractures in schist.

Reporter information

Type Date Name Affiliation Comment
Reporter 19-AUG-1999 Travis L. Hudson Applied Geology

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.