The Fourth of July 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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Fourth of July Creek Placer MRDS details
Site Name
Primary: Fourth of July Creek Placer
Commodity
Primary: Gold
Secondary: Platinum
Secondary: Silver
Tertiary: Mercury
Location
State: Alaska
District: Eagle
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
Year First Production: 1902
Discovery Year: 1898
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: Platinum
Ore: Silver
Ore: Cinnabar
Ore: Gold
Comments
Comment (Geology): VALLEY ASYMMETRIC, STEEPER WALL ON EAST SIDE. ; MAJOR.UNITS: BEDROCK IN UPPER VALLEY IS TERTIARY CONGLOMERATE AND INTERBEDDED SEDIMENTARY ROCKS. ; REG.COM: PROXIMATE SOURCE OF GOLD IS TERTIARY CONGLOMERATE. ULTIMATE SOURCE IS QUARTZ VEINS IN METAMORPHIC ROCKS. GOLD IN PLACERS DERIVED FROM CONGLOMERATE ERODED FROM OLDER METAMORPHIC ROCKS AT HEAD OF CREEK. PLACERS ONLY WHERE BEDROCK IS CONGLOMERATE. A LARGE PART OF GOLD SAID TO HAVE COME OUT OF UNION CREEK, A SMALL TRIBUTARY FROM THE SE.
Comment (Deposit): STREAM GRADIENT ABOUT 125 FEET PER MILE. DISCOVERY CLAIM AT MOUTH OF CROWLEY CREEK. ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT
Comment (Development): MINING REPORTED FROM 1902-1973. HYDRAULIC METHODS ONLY TYPE OF MINING MENTIONED. 29 FT. SHAFT SUNK TO PROSPECT BENCH.
Comment (Deposit): GOLD IN LOWER 2-3 FT. OF GRAVEL, ON BEDROCK, AND IN CRACKS IN TOP 2 FT. OF BEDROCK. BENCH DEPOSITS ON NW SIDE OF VALLEY ARE AURIFEROUS. BEDROCK OVERLAIN BY 6-15 FT. OF GRAVEL AND 2-7 FT. OF MUCK. GOLD CONTAINS ALLOYED PLATINUM AND SILVER.
Comment (Workings): 2.5 MILE DITCH ON EAST SIDE OF VALLEY.
Comment (Location): USGS-MF 390, LOC. 8. MINE AND TAILINGS MARKED ON CHARLEY RIVER (A-2, 3). COORDINATES GIVEN ARE FOR CENTER OF PLACER GROUND. LAND STATUS VALUE CALCULATED 6-94 USING GIS OVERLAY ANALYSIS WITH BLM 1:2,500,000 SCALE OWNERSHIP STATUS MAP (1991).
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-390 (A-2, 3), LOC. 8.
Reference (Deposit): USGS BULL. 897-C, P. 201-204
Reference (Deposit): USGS BULL 917-D, P. 246-250, 257-259
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