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

Unnamed (south of William Creek)

Occurrence in Alaska, United States with commodity Copper
Map
XML
JSON
KML
B
Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Commodities
  6. Host and associated rocks
  7. Nearby scientific data
  8. Economic information about the deposit and operations
  9. Mining district
  10. Links to other databases
  11. Bibliographic references
  12. General comments
  13. Reporter information

Geologic information

Identification information

Deposit ID 10000792
MRDS ID A011437
Record type Site
Current site name Unnamed (south of William Creek)
Alternate or previous names Unnamed

Geographic coordinates

Geographic coordinates: -142.44253, 62.19859 (WGS84)
Relative position Best location: Richter and Matson, 1969, USGS OF 365, loc. 329. Accurate within 100 ft radius

Site location context

Political divisions (FIPS codes)

Valdez-Cordova(Census area)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Nabesna A-3(quadrangle 1:63,360 scale)

Nabesna SE(quadrangle 1:100,000 scale)

Nabesna C(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Alaska(hydrologic region)

Federal lands

Wrangell-St. Elias National Preserve(National Preserve)

National Preserve NPS(Type of land area)

NPS(Federal land areas administered by NPS)

Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Copper Primary

Comments on the commodity information

  • Ore Material = Secondary Cu minerals

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
    Rock unit name Nabesna Pluton
    Rock description Nabesna Pluton
    Stratigraphic age (youngest) Late Cretaceous
    Stratigraphic age (youngest) Late Cretaceous
    Stratigraphic age (youngest) Late Triassic
    Stratigraphic age (youngest) Late Cretaceous
  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Limestone

Nearby scientific data

(1) -142.44253, 62.19859
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = Copper-stained breccia at contact between Cretaceous granodiorite and Triassic limestone

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic

Comments on exploration

  • Status = Inactive

Mining district

District name Chisana

Comments on the workings information

  • Workings / Exploration = Chip sample across 1.5 ft of Cu-stained breccia assayed: 2.0 ppm Au, 3 ppm Ag, 700 ppm B, 7000 ppm Cu, 700 ppm Zn (USGS OF 365, sample 329). Type of workings: surface

Reference information

Bibliographic references

Comments on the references

  • Primary Reference = Richter and Matson, 1971, USGS OF 365

General comments

Subject category Comment text
Deposit Model Name = Lode: contact metamorphic?
Deposit Other Comments = Possibly related to several skarn occurrences about 2 mi SW in SW 1/4, sec. 29, T. 5 N, R. 16 E., Nabesna A-3 quadrangle; see USGS OF 365

Reporter information

Type Date Name Affiliation Comment
Reporter 10-FEB-1997 Leonard, K.R. U.S. Geological Survey
Reporter 10-FEB-1997 Elliott, R.L. U.S. Geological Survey
Reporter 10-FEB-1997 Richter, D.H. 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.