Coors Pegmatite

The Coors Pegmatite is a feldspar and mica mine located in Jefferson county, Colorado at an elevation of 7,759 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

MRDS mine locations are often very general, and in some cases are incorrect. Some mine remains have been covered or removed by modern industrial activity or by development of things like housing. The satellite view offers a quick glimpse as to whether the MRDS location corresponds to visible mine remains.

Site Name

Primary: Coors Pegmatite
Secondary: Coors Quarry
Secondary: Coors Feldspar Pegmatite

Commodity

Primary: Feldspar
Primary: Mica
Tertiary: REE

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

Not available

Ownership

Owner Name: Coors Pottery Co.
Home Office: Denver, Co.

Production

Not available

Deposit

Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Year First Production: 1935
Year Last Production: 1949
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: LENTICULAR

Form: LENTICULAR

Form: LENTICULAR

Structure

Type: R
Description: Front Range Uplift, Denver Basin

Type: L
Description: Floyd Hill Fault Zone, Unnamed Overturned Anticline

Alterations

Not available

Rocks

Name: Pegmatite
Role: Associated
Age Type: Associated Rock Unit
Age Young: Neoproterozoic

Name: Pegmatite
Role: Associated
Age Type: Associated Rock
Age Young: Neoproterozoic

Name: Pegmatite
Role: Associated
Age Type: Host Rock
Age Young: Neoproterozoic

Analytical Data

Not available

Materials

Ore: Albite
Ore: Cleavelandite
Ore: Microcline
Gangue: Garnet
Gangue: Quartz
Gangue: Allanite
Gangue: Magnetite
Gangue: Muscovite

Comments

Comment (Deposit): TWO LENTICULAR PEGMATITES EN ECHELON, IRREGULAR IN SHAPE WITH PINCH AND SWELL WALLS. BOTH THICKEN AND BLUNT OUT TO SW AND THIN TO NE. WALL ZONE CONSISTS OF GRAPHIC MICROCLINE AND PLAGIOCLASE AROUND NEARLY CONTINUOUS QUARTZ CORE.

Comment (Location): ON RIDGE NE OF UNNAMED TRIBUTARY OF SODA CREEK 0.9 MILE NW OF BERGEN PARK ; INFO FROM LAND.ST :(1975)

Comment (Production): SCRAP MICA PRODUCTION UNKNOWN

Comment (Workings): SIX OPEN CUTS, ONE TUNNEL, SHAFTS

References

Reference (Deposit): SHERIDAN, D.M., AND OTHERS, 1972, GEOLOGIC MAP OF THE EVERGREEN QUADRANGLE, JEFFERSON COUNTY, COLORADO: USGS MAP I-786-A.

Reference (Deposit): MEEVES, H.C., AND OTHERS, 1966, RECONNAISSANCE OF BERYLLIUM-BEARING PEGMATITE DEPOSITS IN SIX WESTERN STATES: USBM IC-8298, P. 27.

Reference (Deposit): BOOS, M.F., 1954, GENESIS OF PRECAMBRIAN GRANITIC PEGMATITES IN THE DENVER MOUNTAIN PARKS AREA, COLORADO: GSA BULL., V. 65, NO. 2, P. 115-142.

Reference (Deposit): USBM MIN. EXAM. FILE, REPT. OF 6/29/59 (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.