The Bear Gulch 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.
Bear Gulch Placer MRDS details
Site Name
Primary: Bear Gulch 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
Not available
Production
Not available
Deposit
Record Type: Site
Operation Category: Past 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 AVERAGES 857 PARTS AU AND 135 PARTS AG.
Materials
Ore: Gold
Unknown: Cassiterite
Comments
Comment (Location): USGS MF-405, LOC. 12. PLACER MINE MARKED ON RUBY (B-5) LAND STATUS VALUE CALCULATED 6-94 USING GIS OVERLAY ANALYSIS WITH BLM 1:2,500,000 SCALE OWNERSHIP STATUS MAP (1991).
Comment (Workings): DRIFT MINED FROM SEVERAL SHAFTS.
Comment (Development): GOLD DISCOVERED IN 1910; MINED UNTIL ABOUT 1933. MINING WAS MAINLY BY OPEN CUTS; MORE PRODUCTIVE CLAIMS MINED ALSO BY DRIFTING.
Comment (Deposit): GOLD IN LOWER 1.5-2 MILES OF CREEK. PRINCIPAL PAY STREAK ON LOW TERRACE ON SE SIDE OF CREEK; ALSO, LOWER GRADE MINOR PAY STREAK ON HIGHER LEVEL BENCH ON SE SIDE OF CREEK. 6 CREEK CLAIMS AND ONE BENCH CLAIM HAVE BEEN PRODUCTIVE. ALLUVIUM 20-30 FT. DEEP; GRAVEL 6-8 FT. THICK; PAY STREAK 75-100 FT. WIDE. PAY STREAK CLOSELY FOLLOWS COURSE OF PRESENT STREAM. CASSITERITE NOT ABUNDANT. VERY LITTLE OR NO GRAVEL ON UPPER (TRUE) BENCH; ALLUVIUM 25 FT. THICK.
Comment (Geology): PROBABLY 2 EROSION CYCLES. CLOSEST KNOWN GRANITE BODIES ARE ABOUT 6 MILES TO THE NE AND 6 MILES TO THE SE. VALLEY NARROW. SOME GRANITIC AND QUARTZ-FLUORITE VEINS IN ACTINOLITE SCHIST, QUARTZITE SCHIST, AND GRAPHITIC SCHIST ARE KNOWN. ; MAJOR.UNITS: BEDROCK, AT LEAST IN PART, IS DEEPLY WEATHERED GREENSTONE; BEDROCK BROWN-STAINED IN PLACES AND CUT BY VEIN QUARTZ. ; REG.COM: GOLD IN BEAR GULCH DERIVED FROM THE SE; PAY STREAK ENRICHED AT MOUTHS OF TRIBUTARY GULCHES. PROBABLE LODE SOURCE ON RIDGE OR SLOPE TO EAST WHERE COVER IS THICK.
Comment (Deposit): STREAM GRADIENT APPROXIMATELY 100 FT. PER MILE. ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT
Comment (Deposit): THIS SITE NAME WAS CREATED BY THE REPORTER OR OTHER USGS EMPLOYEE BASED ON PROXIMITY TO SOME MAJOR GEOGRAPHIC FEATURE.
References
Reference (Deposit): USGS MF-405 (B-5), LOC. 12
Reference (Deposit): USGS BULL 864-C, P. 146, 148-151.
Reference (Deposit): USGS OF 85-213, P. 84, LOC. 5.
Reference (Deposit): USGS BULL. 642, P. 241.
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These ten states contributed the most to the gold production that built the West from 1848 through the 1930s. The Top Ten Gold Producing States.
