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  3. Mineral Resource Data System (MRDS)

Windfall Creek Placer

Past Producer 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. 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. Mining district
  12. Land status
  13. Links to other databases
  14. Bibliographic references
  15. General comments
  16. Reporter information

Geologic information

Identification information

Deposit ID 10001290
MRDS ID A012024
Record type Site
Current site name Windfall Creek Placer
Related records 10161276

Geographic coordinates

Geographic coordinates: -134.71564, 58.49003 (WGS84)
Location accuracy 1000(meters)

Site location context

Political divisions (FIPS codes)

Juneau(Borough)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Juneau B-3(quadrangle 1:63,360 scale)

Juneau SE(quadrangle 1:100,000 scale)

Juneau(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Lynn Canal(hydrologic unit)

Northern Southeast Alaska(hydrologic accounting unit)

Southeast Alaska(hydrologic subregion)

Alaska(hydrologic region)

Federal lands

Tongass 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

Comments on the location information

  • SEE: USGS BULL 287, FIG. 34., P. 127 LAND STATUS VALUE CALCULATED 6-94 USING GIS OVERLAY ANALYSIS WITH BLM 1:2,500,000 SCALE OWNERSHIP STATUS MAP (1991).

Commodities

Commodity Importance
Gold Primary

Materials information

Materials Type of material
Gold Ore

Analytical data

Result AU WORTH $17.50/OZ, (EQUIVALENT TO A FINENESS OF 846.6 GIVEN PRICE OF AU CT $20.67/FINE OZ), USGS BULL 263, P. 207

Host and associated rocks

  • Host or associated Host
    Rock type Unconsolidated Deposit > Gravel

Nearby scientific data

(1) -134.71564, 58.49003
ListMap

Economic information

Ore body information

  • Thickness 6.1M
    Length 45.72M

Comments on the geologic information

  • WINDFALL LAKE FORMED BEHIND DAM OF GLACIAL OUTWASH; QURIFEROUS GRAVELS DERIVED FROM FORK OF WINDFALL CREEK THAT HEADS NEAR THE SMITH AND HEID PROSPECT ; MAJOR.UNITS: BEDROCK IS SLATE AND GREENSTONE OF THE GRETACEOUS TO JURASSIC TREADWELL FORMATION, SEE: USGS GQ-100

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1882
Year of first production 1882
Year of last production 1906

Mining district

District name Juneau/Eagle River

Land status

Ownership category State

Comments on the workings information

  • SMALL SCALE MINING; 1 UNPATENTED PLACER CLAIM

Comments on development

  • MINED INTERMITTENTLY BETWEEN 1882 AND 1906; NOT VERY PROFITABLE; ATTEMPT TO MINE HYDRAULICALLY IN 1903 FAILED DUE TO SHORTAGE OF WATER

Reference information

Bibliographic references

General comments

Subject category Comment text
Deposit GURIFEROUS GRAVELS IN FLAT ABOVE SMALL LAKE; GOLD DERIVED FROM 150 FT WIDE, 20 FT DEEP BOULDER-FILLED CHANNEL LEADING INTO BASIN; LOW GRADE; ABUNDANT QUARTZ FRAGMENTS IN GRAVELS, SOME WITH VISIBLE SULFIDES
Deposit SEE ALSO: SMITH AND HEID ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT

Reporter information

Type Date Name Affiliation Comment
Reporter 01-NOV-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.

External references

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.