The Pennsylvania Mountain Placers is a gold mine located in Park county, Colorado.
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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Pennsylvania Mountain Placers MRDS details
Site Name
Primary: Pennsylvania Mountain Placers
Secondary: Bulger Basin Mine
Secondary: Bullger Basin Placer
Secondary: Penn Placer
Commodity
Primary: Gold
Location
State: Colorado
County: Park
District: Alma District
Land Status
Not available
Holdings
Not available
Workings
Not available
Ownership
Not available
Production
Not available
Deposit
Record Type: Site
Operation Category: Past Producer
Deposit Type: Placer
Operation Type: Unknown
Years of Production:
Organization:
Significant: N
Physiography
Not available
Mineral Deposit Model
Model Name: Placer Au-PGE
Orebody
Not available
Structure
Not available
Alterations
Not available
Rocks
Not available
Analytical Data
Not available
Materials
Not available
Comments
Comment (Commodity): The gold is about 0.74 to 0.75 fine.
Comment (Geology): The gold shows virtually no rounding, and some still has quartz attached, indicating that it is an eluvial placer accumulation.
Comment (Location): Pits are on the east flank of Pennsylvania Mountain at 12,200 feet elevation, about 3 miles SW of Alma, in the SW/4 sec 16 and SE/4 sec 17, T 9 S, R 78 W.
Comment (Production): Placer is well known for coarse gold found there. The largest nugget, found in 1938, weighed 11.12 oz. About 32 oz. were produced from 1935 to 1937.
Comment (Production): Reported production from 1961 to 1974 was about 710 oz. of gold. (1974, Sunshine files)
Comment (Production): A lack of water nearby has hampered mining operations.
References
Reference (Deposit): DEL RIO, 1961, MIN. RES. OF COLO.
Reference (Deposit): Sunshine Mining Co. Colorado exploration files, unpublished data, Colorado Geological Survey.
Reference (Deposit): Singewald, Q. D., 1950, Gold placers and their geologic environment in northwestern Park County, Colorado: U.S. Geological Survey Bulletin 955-D, p. 103-172.
Reference (Deposit): OWNER-OP: FAIRPLAY MINING COMPANY
Reference (Deposit): CONSV. DIV. COMP. DATE, 9,64
Reference (Deposit): Parker, B. H., Jr., 1961, The geology of the gold placers of Colorado: Golden, CO, Colorado School of Mines, Ph.D. dissertation, 578 p.
Reference (Deposit): MESA METAL-NONMETAL MINE FILE REF
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