Long Creek Placer

The Long Creek Placer is a gold mine located in Alaska.

About the MRDS Data:

All mine locations were obtained from the USGS Mineral Resources Data System. The locations and other information in this database have not been verified for accuracy. It should be assumed that all mines are on private property.

Mine Info

Satelite View

MRDS mine locations are often very general, and in some cases are incorrect. Some mine remains have been covered or removed by modern industrial activity or by development of things like housing. The satellite view offers a quick glimpse as to whether the MRDS location corresponds to visible mine remains.

Site Name

Primary: Long Creek Placer

Commodity

Primary: Gold
Secondary: Silver
Tertiary: Tin

Location

State: Alaska
District: Ruby

Land Status

Land ownership: State
Note: the land ownership field only identifies whether the area the mine is in is generally on public lands like Forest Service or BLM land, or if it is in an area that is generally private property. It does not definitively identify property status, nor does it indicate claim status or whether an area is open to prospecting. Always respect private property.

Holdings

Not available

Workings

Not available

Ownership

Owner Name: Ruby Mining Co.

Owner Name: Albert Kongas
Home Office: P.O. Box 1, Ruby, Ak. 99768
Years: 1975 -

Production

Not available

Deposit

Record Type: Site
Operation Category: Producer
Operation Type: Unknown
Discovery Year: 1910
Years of Production:
Organization:
Significant: N
Deposit Size: S

Physiography

Not available

Mineral Deposit Model

Not available

Orebody

Not available

Structure

Not available

Alterations

Not available

Rocks

Not available

Analytical Data

Analytical Data: FINENESS AVERAGED 857 PARTS AU AND 135 PARTS AG.

Materials

Ore: Gold
Ore: Cassiterite

Comments

Comment (Deposit): THIS SITE NAME WAS CREATED BY THE REPORTER OR OTHER USGS EMPLOYEE BASED ON PROXIMITY TO SOME MAJOR GEOGRAPHIC FEATURE.

Comment (Deposit): STREAM GRADIENT UNDER 50 FT. PER MILE. CREEK NEARLY WORKED OUT; SOME PERIPHERAL PLACERS MAY REMAIN. ENTIRE CREEK PROBABLY HAS NOT BEEN THOROUGHLY PROSPECTED. ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT

Comment (Geology): VALLEY OF LONG CR. IS ASYMMETRIC, HAVING A FAIRLY STEEP SLOPE ON ITS WEST SIDE AND A GENTLE SLOPE ON ITS EAST SIDE; DEPTH OF VALLEY BELOW RIDGES ON BOTH SIDES ABOUT 1,000 FT. BEDROCK VALLEY FLOOR BELOW MOUTH OF BEAR GULCH NEARLY FLAT IN CROSS SECTION; SLOPES DOWNSTREAM MORE STEEPLY THAN PRESENT VALLEY. GRANITE IN DIVIDE BETWEEN LONG AND FLINT CREEK. AT TOWN OF LONG, STREAM CHANGES COURSE FROM S 60 E TO S 40 W. ; MAJOR.UNITS: BEDROCK MAINLY CHERTY SILICEOUS ROCK WITH TALCOSE LAYERS; SOME GREENSTONE; BEDROCK MUCH JOINTED. ; REG.COM: LODE SOURCE OF GOLD E AND SE OF CREEK. PAY STREAK ENRICHED BY ACCRETION OF GOLD FROM SMALL EASTERN TRIBUTARIES.

Comment (Deposit): GOLD FOUND IN BASE OF GRAVEL, ON BEDROCK, AND IN POCKETS OR CREVICES IN THE TOP 2-3 FT. OF DECOMPOSED BEDROCK. GOLD ALSO FOUND ON CLAY FALSE BEDROCK 2-3 FT. ABOVE THE TRUE BEDROCK; WHERE GOLD WAS FOUND ON SUCH CLAY BEDS LITTLE OR NO GOLD WAS FOUND ON THE TRUE BEDROCK BELOW. ALL GOLD IN BENCH PLACERS EAST OF CREEK ABOVE LONG AND SE OF CREEK BELOW LONG; NO RELATIONSHIP BETWEEN PAY STREAK AND PRESENT COURSE OF CREEK. PAY STREAK DISCONTINUOUS; PAY STREAK AT LEAST 6.5 MILES LONG AND 100 FT. WIDE; ALLUVIUM 20-80 FEET THICK. DEPTH TO BEDROCK NEAR MOUTH OF BEAR GULCH IS 40-50 FT.; PAY STREAK THOUGHT TO BE CONTINUOUS BELOW MOUTH AND DISCONTINUOUS ABOVE.

Comment (Workings): SEVERAL SHAFTS SUNK TO BEDROCK FOR DRIFT MINING. SOME OF DEEPER GROUND NOT FROZEN, SO WATER IS A PROBLEM IN MINING.

Comment (Location): USGS MF-405, LOC. 13. PLACER MINE MARKED ON RUBY (B-5, 6). COORDINATES GIVEN FOR PLACER MINE MARKED AT MOUTH OF SNOW GULCH. LAND STATUS VALUE CALCULATED 6-94 USING GIS OVERLAY ANALYSIS WITH BLM 1:2,500,000 SCALE OWNERSHIP STATUS MAP (1991).

Comment (Development): GOLD DISCOVERED, 1910; ALMOST CONTINUOUS MINING (INCLUDING REWORKING OF OLD TAILINGS) THROUGH 1977. EARLY WORK ALL DRIFT MINING. ALL WORK SINCE 1940 OPEN-CUT MINING. MINED IN 1975 BY DRAGLINE AND BULLDOZER.

References

Reference (Deposit): USGS MF-405 (B-5, 6), LOC. 13

Reference (Deposit): USGS BULL 864-C, P. 146-151

Reference (Deposit): USGS OF 77-168 D, P. 86, LOC. 30.

Reference (Deposit): USGS BULL 578, P. 40-41

The Top Ten Gold Producing States

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