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

Unnamed (south of Williams Creek)

Occurrence in Alaska, United States with commodity Gypsum-Anhydrite, Alabaster
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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 10000793
MRDS ID A011438
Record type Site
Current site name Unnamed (south of Williams Creek)
Alternate or previous names Unnamed

Geographic coordinates

Geographic coordinates: -142.41253, 62.1797 (WGS84)
Relative position Best location: Richter and Matson, 1969, USGS OF 365. Accurate within 1000 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
Gypsum-Anhydrite, Alabaster Primary

Materials information

Materials Type of material
Gypsum Ore

Host and associated rocks

  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Mafic Volcanic Rock > Basalt
    Rock unit name Nikolai Greenstone
    Rock description Nikolai Greenstone
    Stratigraphic age (youngest) Late Triassic
    Stratigraphic age (youngest) Late Triassic
    Stratigraphic age (youngest) Late Triassic
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Mafic Volcanic Rock > Basalt

Nearby scientific data

(1) -142.41253, 62.1797
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = Pods of massive gypsum (variety: alabaster) up to 5 ft thick in amphibolitized amygdaloidal basalt of Triassic age (Nikolai Greenstone).

Economic information about the deposit and operations

Development status Occurrence
Commodity type Non-metallic

Comments on exploration

  • Status = Inactive

Mining district

District name Chisana

Comments on the workings information

  • Workings / Exploration = Type of workings: none

Reference information

Bibliographic references

Comments on the references

  • Primary Reference = Richter and Matson, 1969, USGS OF 365

General comments

Subject category Comment text
Deposit Model Name = Lode: podiform
Deposit Other Comments = Possibly source of material for sculpting.

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.