Greenstone Creek Placer

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

Geologic information

Identification information

Deposit ID 10003027
MRDS ID A015545
Record type Site
Current site name Greenstone Creek Placer
Related records 10257443

Geographic coordinates

Geographic coordinates: -155.52252, 64.30366 (WGS84)
(click for info)

Geographic areas

Country State
United States Alaska

Comments on the location information

  • USGS MF-405, LOC. 23. STRIP MINE MARKED ON RUBY (B-6). COORDINATES GIVEN FOR CONFLUENCE WITH GREENSTONE GULCH. TRIBUTARY OF LONG 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
Tin Tertiary

Materials information

Materials Type of material
Cassiterite Ore
Gold Ore

Analytical data

Result FINENESS 865.75 AU AND 129 AG.

Host and associated rocks

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

Nearby scientific data

(1) -155.52252, 64.30366

Comments on the geologic information

  • HEADWATERS DRAIN AREA OF GRANITE. ; MAJOR.UNITS: BEDROCK IS WEATHERED GREENSTONE.

Economic information

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1913
Year of first production 1914

Mining district

District name Ruby

Land status

Ownership category State

Ownership information

  • Type Operator
    Owner Clarence Zaiser
    Home office Ruby, Ak. 99786
    First year 1975

Comments on the workings information

  • ALLUVIUM FROZEN. TWO MILES OF CREEK DREDGED 1916-17.

Comments on development

  • DURING THE WINTER OF 1914-1915 ABOUT 40 PROSPECT HOLES WERE SUNK ON THE UPPER PART OF THE CREEK, AND THE FOLLOWING SUMMER ABOUT 65 MORE WERE PUT DOWN FROM 5 TO 17 FEET DEEP TO TEST THE GROUND FOR DREDGING. MINED BY OPEN CUTS 1914-15. DREDGE INSTALLED, 1915; DREDGE OPERATED 1916-17. MINING REPORTED IN MOST YEARS UNTIL 1942 AND AT VARIOUS TIMES BETWEEN 1946 AND 1960. SOME MINING AS RECENTLY AS 1975. MINED IN 1975 BY BULLDOZER.

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS A015545

Bibliographic references

  • Deposit

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

  • Deposit

    USGS OF 239, P. 37, 40, 47-48.

  • Deposit

    USGS OF 77-168 D, P. 86, LOC. 28.

  • Deposit

    USGS BULL 864-C, P. 146, 152-153.

General comments

Subject category Comment text
Deposit GOLD ON BEDROCK AND SPOTTILY DISTRIBUTED; PAY STREAK 60-100 FT. WIDE AND APPROXIMATELY 2 MILES LONG. OVERBURDEN MOSTLY GRAVEL; 5-8 FT. THICK IN UPPER PART AND 25 PLUS FEET THICK DOWNSTREAM ABOVE WINTER TRAIL. PAY STREAK FOLLOWS GENERAL COURSE OF CREEK. SOME PLACER CASSITERITE.
Deposit STREAM GRADIENT APPROXIMATELY 100 FEET PER MILE IN AREA MINED. CREEK THOUGHT TO BE NEARLY WORKED OUT. ; 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.
Deposit Discovery Year: 1913-14

Reporter information

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