The Burroughs Feldspar Mine is a mica, feldspar, and beryllium mine located in Jefferson county, Colorado at an elevation of 7,451 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: 7,451 Feet (2,271 Meters)
Commodity: Mica, Feldspar, Beryllium
Lat, Long: 39.68139, -105.32278
Map: View on Google Maps
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Burroughs Feldspar Mine MRDS details
Site Name
Primary: Burroughs Feldspar Mine
Secondary: Sunrise Peak Mine
Secondary: Traut-Rudin-Anderson Pegmatite
Commodity
Primary: Mica
Primary: Feldspar
Primary: Beryllium
Secondary: Niobium (Columbium)
Secondary: Tantalum
Tertiary: Bismuth
Tertiary: REE
Tertiary: Uranium
Tertiary: Thorium
Tertiary: Lithium
Location
State: Colorado
County: Jefferson
District: Clear Creek Pegmatite Province
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
Ownership
Owner Name: L. T. Burroughs
Home Office: Golden, Co.
Years: 1943 -
Production
Not available
Deposit
Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Year First Production: 1942
Year Last Production: 1944
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
Form: TABULAR
Structure
Type: R
Description: Front Range Uplift, Denver Basin
Type: L
Description: Floyd Hill Fault Zone
Alterations
Not available
Rocks
Name: Pegmatite
Role: Associated
Age Type: Associated Rock
Age Young: Neoproterozoic
Name: Pegmatite
Role: Associated
Age Type: Host Rock
Age Young: Neoproterozoic
Name: Pegmatite
Role: Associated
Age Type: Host Rock Unit
Age Young: Neoproterozoic
Name: Pegmatite
Role: Associated
Age Type: Associated Rock Unit
Age Young: Neoproterozoic
Analytical Data
Not available
Materials
Ore: Microcline
Ore: Beryl
Ore: Monazite
Ore: Tantalite
Ore: Columbite
Ore: Gadolinite
Ore: Xenotime
Ore: Allanite
Ore: Euxenite
Ore: Pyrochlore
Ore: Muscovite
Gangue: Biotite
Gangue: Triphylite
Gangue: Topaz
Gangue: Sericite
Comments
Comment (Production): PRESUMED CUMULATIVE PRODUCTION FROM USBM (?). FIGURE FOR FLD INCLUDES 6000 ST IN 1942-44.
Comment (Development): MINE PRODUCED 6000 TONS FELDSPAR IN 1942-44. USBM (?) LISTS PRESUMABLY CUMULATIVE PRODUCTION
Comment (Deposit): ZONED PEGMATITE TRENDING N 65 E, VERTICAL. WALL ZONE IS QUARTZ-MICROCLINE-BIOTITE; CORE IS QUARTZ-MICROCLINE
Comment (Workings): OPEN CUT 35 FT DEEP
Comment (Location): BETWEEN SWEDE GULCH AND KERR GULCH 2.3 MILES SE OF BERGEN PARK. HANLEY AND OTHERS (1950) GIVE LOCATION IN NE SEC. 27, BUT SEC. 22 IS PROBABLY LOCATION ; INFO FROM LAND.ST :(1975)
References
Reference (Deposit): HANLEY, J.B., AND OTHERS, 1950, PEGMATITE INVESTIGATIONS IN COLORADO, WYOMING, AND UTAH, 1942-44: USGS PROF. PAPER 227, P. 84
Reference (Deposit): OLSON, J.C., AND ADAMS, J.W., 1962, THORIUM AND RARE EARTHS IN THE UNITED STATES: USGS MAP MR-28
Reference (Deposit): BOOS, M.F., 1954, GENESIS OF PRECAMBRIAN PEGMATITES IN THE DENVER MOUNTAIN PARKS AREA, COLORADO: GSA BULL., V. 65, P. 115-142
Reference (Deposit): HEINRICH, E.W., 1947, BEYERITE FROM COLORADO: AM. MINERALOGIST, V. 32, NOS. 11-12, P. 660-669
Reference (Deposit): MEEVES, H.C., AND OTHERS, 1966, RECONNAISSANCE OF BERYLLIUM-BEARING PEGMATITE DEPOSITS IN SIX WESTERN STATES: USBM IC-8298, P. 29.
Reference (Deposit): USBM MIN. EXAM. FILE (FROM ORIGINAL CRIB RECORD)
Reference (Production): ORIGINAL CRIB RECORD (PROBABLY USBM REFERENCE)
Colorado Mining Photos
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