The Pennsylvania Mine is a silver, lead, gold, zinc, and copper mine located in Summit 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
Elevation:
Commodity: Silver, Lead, Gold, Zinc, Copper
Lat, Long: 39.6, -105.80889
Map: View on Google Maps
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Pennsylvania Mine MRDS details
Site Name
Primary: Pennsylvania Mine
Secondary: Rothschild (Minerou) Tunnel
Secondary: Congress
Commodity
Primary: Silver
Primary: Lead
Primary: Gold
Primary: Zinc
Primary: Copper
Location
State: Colorado
County: Summit
District: Montezuma - Geneva Creek
Land Status
Not available
Holdings
Not available
Workings
Not available
Ownership
Not available
Production
Year: 1923
Time Period: 1888-92, 1922-23
Deposit
Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Years of Production:
Organization:
Significant: N
Physiography
General Physiographic Area: Rocky Mountain System
Physiographic Province: Southern Rocky Mountains
Mineral Deposit Model
Model Name: Polymetallic veins
Orebody
Not available
Structure
Type: L
Description: ore localized in competent gneiss wall rock
Alterations
Alteration Type: L
Alteration Text: wall rocks are silicified, pyritized
Rocks
Name: Porphyry
Role: Host
Age Type: Host Rock
Age Young: Tertiary
Name: Granitoid
Role: Host
Age Type: Host Rock
Age Young: Mesoproterozoic
Name: Gneiss
Role: Host
Age Type: Host Rock
Age Young: Paleoproterozoic
Name: Schist
Role: Host
Age Type: Host Rock
Age Young: Paleoproterozoic
Analytical Data
Not available
Materials
Ore: Chalcopyrite
Ore: Galena
Ore: Sphalerite
Ore: Tetrahedrite
Gangue: Pyrite
Gangue: Quartz
Comments
Comment (Location): NW slope of Decatur Mountain and south side of Peru Creek, about 3 miles ENE of Montezuma, in SE/4 sec.20, T 5 S, R 75 W. Other (previous) mines listed above, Congress, Rothschild (Minerou) Tunnel, are separate mines on the north side of Peru Creek.
Comment (Production): Estimated production (1885-1930) totaled about 2860 oz. of gold, 760,000 oz. silver, 6,600,000 lb. lead, plus lesser amounts of copper and zinc.
Comment (Deposit): SANDSTONE USED IN SILVERTON CITY HALL
Comment (Geology): The Pennsylvania vein strikes NE and dips steeply NW to SE.
References
Reference (Deposit): LOVERING, T.S., 1935, GEOLOGY AND ORE DEPOSITS OF THE MONTEZUMA QUADRANGLE, COLORADO: U.S. GEOLOGICAL SURVEY PROFESSIONAL PAPER 178, 119 P. page 78
Reference (Deposit): LOVERING, T.S., AND GODDARD, E.N., 1950, GEOLOGY AND ORE DEPOSITS OF THE FRONT RANGE, COLORADO: U.S. GEOLOGICAL SURVEY PROFESSIONAL PAPER 223, 319 P.
Reference (Deposit): CONSV. DIV. COMP. DATE, 8,65
Reference (Deposit): NEUERBERG, G.J., BOTINELLY, THEODORE, AND ANALYSIS, 1977, SELECTED GEOCHEMICAL AND PETROGRAPHIC DATA FOR CHARACTERIZING THE MINERALIZED ROCKS OF THE MONTEZUMA MINING DISTRICT, CENTRAL COLORADO: U.S. GEOLOGICAL SURVEY OPEN FILE REPORT 77-425.
Reference (Deposit): WILSON, ANNA B., AND LAROCK, EDWARD J., 1991, ASCII DATABASE FOR PRINCIPAL LODE MINES AND MINERALIZED AREAS IN SOUTHERN SUMMIT COUNTY, COLORADO, U.S. GEOLOGICAL SURVEY OPEN-FILE REPORT 91-0027A AND B, 22 P. AND ONE DISKETTE.
Reference (Deposit): WILSON, ANNA B., AND LAROCK, EDWARD J., IN PRESS, MINERALIZED AREAS AND PRINCIPAL LODE MINES IN SOUTHERN SUMMIT COUNTY, COLORADO, U.S. GEOLOGICAL SURVEY MISCELLANEOUS FIELD STUDIES MAP MF-2163, SCALE 1:50,000.
Reference (Deposit): Sunshine Mining Co. Colorado exploration files, unpublished data, Colorado Geological Survey.
Colorado Mining Photos
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