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Le Blondeau

Prospect in Alaska, United States with commodities Silver, Gold, Cobalt
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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. Mineral occurrence model information
  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 10308251
Record type Site
Current site name Le Blondeau

Geographic coordinates

Geographic coordinates: -136.24212, 59.25974 (WGS84)
Relative position This prospect is about 1/4 by 1/2 mile in area. Its approximate center is at an elevation of about 1,500 feet on a sharp ridge just west of the terminus of the Le Blondeau Glacier and south of the Tsirku River. It is on the the south-central edge of the section 13, T. 30 S., R. 54 E. of the Copper River Meridian. It is shown as location 26 on sheet 1 of Still and others (1991) and and locations F70 to F72 on sheet 1 of Gilbert and others (1991).

Site location context

Political divisions (FIPS codes)

Haines(Borough)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Skagway B-4(quadrangle 1:63,360 scale)

Skagway SE(quadrangle 1:100,000 scale)

Skagway C(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Chilkat-Skagway Rivers(hydrologic unit)

Northern Southeast Alaska(hydrologic accounting unit)

Southeast Alaska(hydrologic subregion)

Alaska(hydrologic region)

Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Silver Primary
Gold Primary
Cobalt Critical Secondary

Materials information

Materials Type of material
Pyrrhotite Ore
Quartz Gangue

Mineral occurrence model information

Model code 85
USGS model code 22c
Deposit model name Polymetallic veins
Mark3 model number 46

Nearby scientific data

(1) g
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = According to Still and others (1991), this prospect consists of irregular quartz veins up to 0.8 feet wide and 50 feet long that are exposed near the face of the retreating Le Blondeau Glacier. The veins cut bedding and are hosted in dikes and metachert. Vein samples contain up to 1.561 ppm gold, 2.4 ppm silver, and 251 ppm cobalt . The veins are probably of Cretaceous age or younger based on the age of a nearby quartz diorite to granodiorite intrusion (MacKevett and others, 1974; Gilbert, 1988). Still and others (1991) also note that 'The snout of this (Le Blondeau) glacier is the site of some limited placer activity, including the staking of placer claims' but there is no record of any significant production.
  • Age = the age is unknown but is probably Cretaceous or younger based on the age of a nearby intrusion (MacKevett and others, 1974; Gilbert, 1988).

Economic information about the deposit and operations

Development status Prospect

Comments on exploration

  • Status = Active?

Mining district

District name Juneau (Skagway subdistrict)

Reference information

Comments on the references

  • Primary Reference = Still and others, 1991

General comments

Subject category Comment text
Deposit Model Name = There is little information but Still and others (1991) refer to polymetallic veins in dikes and adjacent metacherts (Cox and Singer, 1986; model 22c).

Reporter information

Type Date Name Affiliation Comment
Reporter 04-FEB-01 T.C. Crafford T. Crafford & Associates

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.