The Ophir 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.
Ophir Creek Placer MRDS details
Site Name
Primary: Ophir Creek Placer
Commodity
Primary: Gold
Location
State: Alaska
District: Innoko
Land Status
Not available
Holdings
Not available
Workings
Not available
Ownership
Not available
Production
Not available
Deposit
Record Type: Site
Operation Category: Occurrence
Operation Type: Unknown
Year First Production: 1908
Year Last Production: 1940
Discovery Year: 1907
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: Gold
Gangue: Quartz
Comments
Comment (Geology): MAJOR.UNITS: BEDROCK IS SLATE WITH SOME SANDSTONE. BEDROCK IS CUT BY NARROW DIKES IN PLACES.
Comment (Deposit): STREAM GRADIENT ABOUT 50 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.
Comment (Location): USGS MF-367, LOC. 13. TAILINGS MARKED ON OPHIR (A-2) LAND STATUS VALUE CALCULATED 6-94 USING GIS OVERLAY ANALYSIS WITH BLM 1:2,500,000 SCALE OWNERSHIP STATUS MAP (1991).
Comment (Development): MINING BY DRIFTING, HYDRAULIC PLANTS, AND HYDRAULIC SLACK-LINE SCRAPER PLANT. MOST OF CREEK MINED SECOND TIME BY MECHANICAL EQUIPMENT.
Comment (Deposit): GOLD MAINLY ON BEDROCK AND IN CREVICES IN TOP 2-5 FT. OF FRACTURED SLATY BEDROCK. TOP FEW FEET OF BEDROCK STRIPPED AND MINED. STREAM PLACER CONCENTRATES ENRICHED BY EROSION OF OLDER BENCH PLACERS. DEPTH TO BEDROCK 15-24 FT.; 4-7 FT. OF GRAVEL ON BEDROCK.
Comment (Workings): MOST OF ALLUVIUM IS PERMANENTLY FROZEN.
References
Reference (Deposit): USGS MF-367 (A-2), LOC. 13.
Reference (Deposit): USGS BULLETIN 864-C, P. 176-179.
Reference (Deposit): USGS BULL. 410, P. 22-23.
Reference (Other Database): BAG-MF-367-13
The Top Ten Gold Producing States
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.
