Greenstone Gulch Placer

Past Producer in Alaska, United States with commodities Gold, Silver

Geologic information

Identification information

Deposit ID 10003028
MRDS ID A015546
Record type Site
Current site name Greenstone Gulch Placer
Related records 10232852

Geographic coordinates

Geographic coordinates: -155.51697, 64.3056 (WGS84)
Location accuracy 250(meters)
(click for info)

Geographic areas

Country State
United States Alaska

Comments on the location information

  • USGS MF-405, LOC. 23. PLACER GROUND IN LOWER .5 MI OF GREENSTONE GULCH, A HEADWATER TRIBUTARY OF GREENSTONE 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
Gold Primary
Silver Secondary

Materials information

Materials Type of material
Gold Ore

Analytical data

Result ASSAY SHOWED FINENESS 865.75 PARTS AU AND 129 PARTS AG.

Host and associated rocks

  • Host or associated Associated
    Rock type Metamorphic Rock > Metavolcanic Rock > Mafic Metamorphic Rock > Greenstone
  • Host or associated Host
    Rock type Metamorphic Rock > Metavolcanic Rock > Mafic Metamorphic Rock > Greenstone

Nearby scientific data

(1) -155.51697, 64.3056

Comments on the geologic information

  • MAJOR.UNITS: BEDROCK IS GREENSTONE.

Economic information

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Year of first production 1916

Mining district

District name Ruby

Land status

Ownership category State

Comments on development

  • LOWER 800 FT. OF GULCH DREDGED, 1916-17. SMALLER PAY STREAKS MINED BY OPEN CUTS.

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS A015546

Bibliographic references

  • Deposit

    USGS MF-405 (B-6), LOC. 23

  • Deposit

    USGS BULL 864-C, P. 152-153.

  • Deposit

    USGS OF 81-170, P. 43

General comments

Subject category Comment text
Deposit MOST OF GOLD ON BEDROCK; GRAVEL 5-8 FT. THICK. DREDGED GROUND WAS A CREEK PAY STREAK. 3 TRANSVERSE PAY STREAKS ALONG NW VALLEY WALL UPSTREAM FROM DREDGED AREA HAVE BEEN WORKED. 1,200 FEET UPSTREAM FROM DREDGED GROUND A PAYSTREAK IN THE GULCH MAY BE A CONTINUATION OF THE DREDGED ONE. THESE PARALLEL PAY STREAKS ARE ABOUT 300 TO 400 FEET FROM THE CREEK AND ABOUT 20 TO 40 FEET HIGHER.
Deposit STREAM GRADIENT APPROXIMATELY 100 FEET PER MILE. ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT
Deposit THIS SITE NAME WAS CREATED BY THE REPORTER OR OTHER USGS EMPLOYEE BASED ON PROXIMITY TO SOME MAJOR GEOGRAPHIC FEATURE.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUL-1987 Powers, M.T. (Huber, D.F.) U.S. Geological Survey