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

Twentymile River

Prospect in Alaska, United States with commodity Gold
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Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Public Land Survey System information
  6. Commodities
  7. Materials information
  8. Nearby scientific data
  9. Ore body information
  10. Economic information about the deposit and operations
  11. Mineral rights holdings
  12. Land status
  13. Links to other databases
  14. Bibliographic references
  15. Reporter information

Geologic information

Identification information

Deposit ID 10234167
MRDS ID A003038
MAS/MILS ID 0020950255
Record type Site
Current site name Twentymile River

Geographic coordinates

Point of reference Ore Body
Geographic coordinates: -148.9248, 60.89954 (WGS84)
Elevation 100
Location accuracy 500(meters)

Site location context

Political divisions (FIPS codes)

Anchorage(Municipality)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Seward D-6(quadrangle 1:63,360 scale)

Seward NW(quadrangle 1:100,000 scale)

Seward C(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Anchorage(hydrologic unit)

Knik Arm(hydrologic accounting unit)

South Central Alaska(hydrologic subregion)

Alaska(hydrologic region)

Federal lands

Chugach National Forest(National Forest)

National Forest FS(Type of land area)

FS(Federal land areas administered by FS)

Geographic areas

Country State
United States Alaska

Public Land Survey System information

Meridian Township Range Section Fraction State
Seward 009 N 003 E 04 Alaska

Commodities

Commodity Importance
Gold Primary

Materials information

Materials Type of material
Gold Unknown

Nearby scientific data

Ore Body (1) -148.9248, 60.89954
ListMap

Economic information

Ore body information

  • Field Value
    Type of Orebody #1 PLACER
    Shape of Orebody #1 IRREGULAR
    Primary mode of Origin SEDIMENTATION
    Secondary mode of Origin RESIDUAL CONCENT
    Primary Ore Control BEDDING
    Degree of Wallrock Alter. NONE
    Type of Wallrock Alter. #1 UNKNOWN
    Date of Last Modification 881220

Economic information about the deposit and operations

Development status Prospect
Commodity type Metallic
Significant No

Mineral rights holdings

Type of mineral rights Located Claim

Land status

Ownership category Federal

Reference information

Bibliographic references

Reporter information

Type Date Name Affiliation Comment
Reporter 20-DEC-88 Dwb U.S. Bureau of Mines

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.