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Last Chance Mine

Past Producer in Alaska, United States with commodities Antimony, Gold, Silver
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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. Geologic structures
  10. Ore body information
  11. Economic information about the deposit and operations
  12. Mining district
  13. Land status
  14. Production statistics
  15. Reserves and resources
  16. Workings at the site
  17. Links to other databases
  18. Bibliographic references
  19. General comments
  20. Reporter information

Geologic information

Identification information

Deposit ID 10000618
MRDS ID A011227
Record type Site
Current site name Last Chance Mine
Alternate or previous names Caribou
Related records 10282981

Geographic coordinates

Geographic coordinates: -150.81678, 63.60651 (WGS84)
Location accuracy 500(meters)

Site location context

Political divisions (FIPS codes)

Denali(Borough)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

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

Denali NE(quadrangle 1:100,000 scale)

Mount McKinley(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Alaska(hydrologic region)

Federal lands

Denali National Park(National Park)

National Park NPS(Type of land area)

NPS(Federal land areas administered by NPS)

Geographic areas

Country State
United States Alaska

Comments on the location information

  • INTERSECTION OF CARIBOU CREEK AND LAST CHANCE CREEK LAND STATUS VALUE CALCULATED 6-94 USING GIS OVERLAY ANALYSIS WITH BLM 1:2,500,000 SCALE OWNERSHIP STATUS MAP (1991).

Commodities

Commodity Importance
Antimony Critical Primary
Gold Secondary
Silver Secondary

Materials information

Materials Type of material
Stibnite Ore
Jamesonite Gangue
Pyrite Gangue
Pyrrhotite Gangue
Quartz Gangue

Analytical data

Result ASSAY VALUES ARE 14.30% SB, 0.34 OZ/TON AG, 0.05 OZ/TON AU
Result 2.76-4.0 OZ/TON AG, 0.12 OZ/TON AU

Host and associated rocks

  • Host or associated Host
    Rock type Plutonic Rock > Ultramafic Intrusive Rock > Hornblendite
    Rock unit name Birch Creek Schist
    Rock description Birch Creek Schist
    Stratigraphic age (youngest) Early Cambrian

Nearby scientific data

(1) Pzarqm
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Kantishna Antiform
Type of structure Local
Structure description Series Of Nw Trending Faults

Ore body information

  • Strike N 15 E TO N 20 E
    Dip 50 TO 75 NW
    Thickness 1.83M
    Length 167.64M

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Discoverer Joe Quigley
Year of first production 1905

Mining district

District name Kantishna District; Kantishna Mining Area

Land status

Ownership category National Park

Production statistics

  • Year 1974
    Period 1905-1974
    Accuracy Estimate
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Antimony Antimony 27.75mt 52wt-pct

Comments on the production information

  • ACTUAL PRODUCTION YEARS ARE 1905, 1968-1970, 1973-1974; MINING BEING DONE IN 1975

Reserves and resources

  • Type In-situ
    Estimate year 1983
    Total resources 300000000mt ore
    Commodity Subtype Grade units Group Importance Year
    Antimony Sb 14.3 wt-pct Antimony Major 1983

Comments on the reserve resource information

  • BUNDTZEN, T.K., 1983, P.23

Workings at the site

  • Type of workings Surface
    Overall depth 15.24M

Comments on the workings information

  • SHORT ADITS, SHALLOW SHAFTS AND TRENCHES; TWO SHAFTS DUG IN 1900'S 40 AND 30 FT DEEP WERE FLOODED IN 1916; SMALL CONCENTRATOR ON SITE

Comments on development

  • MINING BEING DONE IN 1975

Reference information

Bibliographic references

General comments

Subject category Comment text
Deposit SEE ALSO: CARIBOU CREEK ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT

Reporter information

Type Date Name Affiliation Comment
Reporter 01-OCT-84 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.