Ober Creek Placer

The Ober Creek Placer is a gold and ree 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: Ober Creek Placer

Commodity

Primary: Gold
Primary: REE

Location

State: Alaska
District: Delta River

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

Not available

Production

Not available

Deposit

Record Type: Site
Operation Category: Occurrence
Operation Type: Unknown
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: AVERAGE EU ABOUT 0.006%, MAXIMUM 0.011%, USGS CIRC 331, P. 18

Materials

Ore: Gold
Ore: Monazite
Gangue: Zircon
Gangue: Epidote

Comments

Comment (Deposit): MAINLY OF MINERALOGIC INTEREST; AU CONTENT AND RADIOACTIVITY TOO SLIGHT TO BE OF MUCH ECONOMIC SIGNIFICANCE ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT

Comment (Location): LOCATION APPROXIMATED FROM USGS OFR 79-238, FIG. 3, LOC. 2 LAND STATUS VALUE CALCULATED 6-94 USING GIS OVERLAY ANALYSIS WITH BLM 1:2,500,000 SCALE OWNERSHIP STATUS MAP (1991).

Comment (Development): PROSPECTING AND POSSIBLY A LITTLE MINING IN EARLY 1900'S; PLACERS DISCOVERED TO BE SLIGHTLY RADIOACTIVE IN 1946 DUE TO THE PRESENCE OF MONAZITE

Comment (Deposit): AURIFEROUS STREAM GRAVELS; SHALLOW AND FROZEN; CONCENTRATES CONTAIN MONAZITE

Comment (Geology): MAJOR.UNITS: SCHIST COUNTRY ROCK ; REG.COM: PROBABLY DERIVED FROM TERTIARY GRAVEL

References

Reference (Deposit): USGS CIRC 331, P. 18

Reference (Deposit): USGS PP 530, P. 109

Reference (Deposit): USGS BULL 1374, P. 124

Reference (Deposit): USBM IC 8626, P. 15

Reference (Deposit): USGS BULL 926-B, P. 143

Reference (Deposit): USGS BULL 989-D, P. 190, 196

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