The Grubstake 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
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Grubstake Creek Placer MRDS details
Site Name
Primary: Grubstake Creek Placer
Commodity
Primary: Gold
Tertiary: Mercury
Tertiary: Tungsten
Location
State: Alaska
District: Bonnifield
Land Status
Not available
Holdings
Not available
Workings
Not available
Ownership
Not available
Production
Not available
Deposit
Record Type: Site
Operation Category: Past Producer
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
Not available
Materials
Ore: Scheelite
Ore: Gold
Ore: Cinnabar
Comments
Comment (Location): USGS MF-410, LOC. 77, 78, 79. PLACER MINES, LOCATIONS 77 AND 78, MARKED IN SE CORNER OF FAIRBANKS (A-3). COORDINATES GIVEN FOR MINE MARKED NEAR MOUTH OF AURIFEROUS SE TRIBUTARY. LAND STATUS VALUE CALCULATED 6-94 USING GIS OVERLAY ANALYSIS WITH BLM 1:2,500,000 SCALE OWNERSHIP STATUS MAP (1991).
Comment (Development): INTERMITTANT MINING, 1905 TO 1940. MINING BY OPEN CUTS. A FEW MILES OF DITCHES BUILT.
Comment (Deposit): GOLD IN BASAL 2 FT. OF STREAM GRAVELS. THICKNESS OF GRAVELS MINED RANGES FROM A FEW INCHES TO 6 FT. GOLD ALSO ON SURFACE OF CLAY BEDROCK. MOST OF MINING IN LOWER MILE OF CREEK; ALSO IN MIDDLE SECTION OF TRIBUTARY ENTERING FROM SE NEAR MOUTH AND IN SPOTS NEAR HEAD. IN LOWER MILE PAY STREAK 25-75 FT. WIDE, BUT OUTSIDE 25 FT. IS REPORTED TO BE PATCHY.
Comment (Deposit): STREAM GRADIENT RANGES FROM 100 FEET PER MILE AT MOUTH TO AROUND 300 FT. PER MILE AT HEAD. LOCATION DISCRIPTION FOR ENTIRE LENGTH OF GRUBSTAKE CREEK AND FOR TRIBUTARY ENTERING NEAR MOUTH FROM THE SE. ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT
Comment (Geology): CREEK RISES ON RIDGE OF NENANA GRAVEL. ; MAJOR.UNITS: BEDROCK IN HEADWATER SECTION IS NENANA GRAVEL. BEDROCK FOR MIDDLE AND LOWER PART OF CREEK IS INTERBEDDED CLAY, SAND, GRAVEL, AND COAL OF TERTIARY COAL-BEARING FORMATION. ; REG.COM: GOLD PROBABLY RECONCENTRATED FROM NENANA GRAVELS.
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-410 (A-3), LOC. 77, 78, 79.
Reference (Deposit): USGS BULL. 314, P. 210-211
Reference (Deposit): USGS BULL 501, P. 44, 48
Reference (Deposit): USGS BULL. 662, P. 399-400.
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