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  3. Mineral Resource Data System (MRDS)

Liberty Falls Prospect

Occurrence in Alaska, United States with commodity Manganese
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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. Ore body information
  10. Economic information about the deposit and operations
  11. Links to other databases
  12. Bibliographic references
  13. General comments
  14. Reporter information

Geologic information

Identification information

Deposit ID 10000844
MRDS ID A011497
Record type Site
Current site name Liberty Falls Prospect
Related records 10185764

Geographic coordinates

Geographic coordinates: -144.55421, 61.61881 (WGS84)
Location accuracy 2000(meters)

Site location context

Political divisions (FIPS codes)

Valdez-Cordova(Census area)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Valdez C-2(quadrangle 1:63,360 scale)

Valdez NE(quadrangle 1:100,000 scale)

Valdez(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Middle Copper River(hydrologic unit)

Copper River(hydrologic accounting unit)

South Central Alaska(hydrologic subregion)

Alaska(hydrologic region)

Federal lands

Chitina Native Corporation(ANCSA Village)

ANCSA Village NTVPIC(Type of land area)

NTVPIC(Federal land areas administered by NTVPIC)

Geographic areas

Country State
United States Alaska

Comments on the location information

  • LOCATION APPROXIMATED FROM USGS OFR 80-892B, LOC. 47 LAND STATUS VALUE CALCULATED 6-94 USING GIS OVERLAY ANALYSIS WITH BLM 1:2,500,000 SCALE OWNERSHIP STATUS MAP (1991).

Commodities

Commodity Importance
Manganese Critical Primary

Materials information

Materials Type of material
Manganite Ore

Analytical data

Result SELECTED SAMPLES CONTAINED UP TO 58.7% MN, USGS BULL 1246, P. 49

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Schist

Nearby scientific data

(1) -144.55421, 61.61881
ListMap

Economic information

Ore body information

  • General form VEIN, LENS

Comments on the geologic information

  • HOST ROCK IS VARIOUSLY DESCRIBED IN LITERATURE AS: 1. STRELNA GREENSTONE FORMATION, ADGGS GC 15, P. 4; 2. CHLORITIC SCHIST OF SKOLAI GROUP, USGS OFR 77-169A, P. 81, LOC. 47; 3. CHLORITIC SCHIST OF LIBERTY CR. TERRANE, USGS OFR 80-892B, LOC. 47

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Small
Significant No

Comments on the workings information

  • EXPLORED BY A FEW SHALLOW TRENCHES IN 1959

Comments on development

  • ACTIVE ABOUT 1959; NO SYSTEMATIC SAMPLING HAD BEEN DONE BY 1967, ADGGS GC 15; NO OTHER DATA

Reference information

Bibliographic references

General comments

Subject category Comment text
Deposit LENSES OF CHLORITIC SCHIST CONTAIN MANGANITE-BEARING QUARTZ VEINLETS, 3 IN MAX THICKNESS; SMALL ISOLATED LENSES OVER 1 MI ALONG STRIKE; INDIVIDUAL OUT CROPS 1 TO 5 FT, DISCOVERY WAS LENS 40 BY 2 FT
Deposit DEPOSIT APPEARS TO BE HIGH GRADE BUT TONNAGE IS EVIDENTLY SMALL ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUL-1985 Leonard, Kenneth R. (Elliott, R. L.) 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.