The Penley No.1 Lease is a uranium mine located in Douglas county, Colorado at an elevation of 6,401 feet.
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: 6,401 Feet (1,951 Meters)
Commodity: Uranium
Lat, Long: 39.39389, -105.03139
Map: View on Google Maps
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Penley No.1 Lease MRDS details
Site Name
Primary: Penley No.1 Lease
Commodity
Primary: Uranium
Location
State: Colorado
County: Douglas
District: Kassler Area
Land Status
Land ownership: Private
Note: the land ownership field only identifies whether the area the mine is in is generally on public lands like Forest Service or BLM land, or if it is in an area that is generally private property. It does not definitively identify property status, nor does it indicate claim status or whether an area is open to prospecting. Always respect private property.
Holdings
Not available
Workings
Type: Surface/Underground
Ownership
Not available
Production
Not available
Deposit
Record Type: Site
Operation Category: Occurrence
Operation Type: Unknown
Discovery Method: Ore-Mineral In Place
Years of Production:
Organization:
Significant: N
Deposit Size: S
Physiography
General Physiographic Area: Rocky Mountain System
Physiographic Province: Southern Rocky Mountains
Mineral Deposit Model
Not available
Orebody
Not available
Structure
Type: R
Description: Front Range Uplift, Pikes Peak Batholith
Type: L
Description: Perry Park-Jarre Canyon Fault
Alterations
Alteration Type: L
Alteration Text: Granite Is Described As Being Altered And Radioactive
Rocks
Name: Pegmatite
Role: Associated
Age Type: Associated Rock
Age Young: Neoproterozoic
Name: Pegmatite
Role: Associated
Age Type: Associated Rock Unit
Age Young: Neoproterozoic
Analytical Data
Analytical Data: RANGE OF RADIOACTIVITY-0.017 TO 1.0 MR/HR
Analytical Data: BACKGROUND RADIATION-0.017 MR/HR
Materials
Ore: Carnotite
Comments
Comment (Development): ONE 120 FT SHAFT WAS SUNK. FOUR TEST PITS AND SIX HOLES WERE DRILLED
Comment (Deposit): MINERALIZATION FOUND IN ALTERED GRANITE IN PERRY PARK-JARRE CANYON FAULT ZONE
Comment (Workings): 120-FT SHAFT; TEST PITS
Comment (Geology): RADIOACTIVITY ALSO OCCURS IN THE SHEAR ZONE BETWEEN THE ROCK TYPES
Comment (Location): 0.5 TO 1.0 MILE NORTH OF JARRE CANYON ; INFO FROM LAND.ST :(1976)
References
Reference (Deposit): NELSON-MOORE, J.L., COLLINS, D.B., AND HORNBAKER, A.L., 1978, RADIOACTIVE MINERAL OCCURRENCES OF COLORADO AND BIBLIOGRAPHY: COLORADO GEOLOGICAL SURVEY BULL. 40, P. 132
Reference (Deposit): SCOTT, G.R., 1963, BEDROCK GEOLOGY OF THE KASSLER QUADRANGLE, COLORADO: USGS PROF, PAPER 421-B, P. 116.
Colorado Mining Photos
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