Burroughs Feldspar Mine

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

Satelite View

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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

Check out this collection of Colorado's best historic mining photos: Incredible Photos of Colorado Mining Scenes.