Grover Mine

The Grover Mine is a feldspar and mica mine located in Clear Creek county, Colorado at an elevation of 8,730 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: Grover Mine

Commodity

Primary: Feldspar
Primary: Mica
Tertiary: Beryllium
Tertiary: Niobium (Columbium)
Tertiary: REE

Location

State: Colorado
County: Clear Creek
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: Joe Grover
Home Office: Park City, Ut.
Years: 1944 -

Production

Not available

Deposit

Record Type: Site
Operation Category: Past Producer
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

Form: TABULAR

Structure

Type: R
Description: Front Range Uplift, Denver Basin

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

Alterations

Not available

Rocks

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
Age Young: Neoproterozoic

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

Analytical Data

Not available

Materials

Ore: Monazite
Ore: Microcline
Ore: Beryl
Ore: Bertrandite
Ore: Muscovite
Ore: Columbite
Gangue: Fluorite
Gangue: Biotite
Gangue: Quartz
Gangue: Albite

Comments

Comment (Workings): MAIN OPEN CUT IS 275 FT LONG, 23 FT WIDE, 30 FT DEEP, WITH 23-FT DRIFT FROM OPEN CUT, SEVERAL SMALL PROSPECT HOLES

Comment (Location): ON SOUTH SIDE OF BEAVER BROOK CANYON 0.8 MILE SW OF SADDLEBACK MTN.. ; INFO FROM LAND.ST :(1975)

Comment (Deposit): GRADATIONALLY ZONED PEGMATITE TRENDS N 88E, 70 TO 90 SE. COUNTRY ROCK FOLIATION TRENDS N 45 TO 72 W, 80 TO 90 NE. BORDER ZONE (0.5 INCH THICK) AND WALL ZONE (1 TO 2 FT) ARE QUARTZ-MICROCLINE-ALBITE-BIOTITE PEGMATITE. INTERMEDIATE ZONE IS QUARTZ-ALBITE-MUSCOVITE PEGMATITE WITH ACCESSORY BERYL, BERTRANDITE, COLUMBITE, MONAZITE, AND FLUORITE(?). QUARTZ CORE.

References

Reference (Deposit): HANLEY, J.B., AND OTHERS, 1950, PEGMATITE INVESTIGATIONS IN COLORADO, WYOMING, AND UTAH, 1942-44: USGS PROF. PAPER 227, P. 29-30

Reference (Deposit): SHERIDAN, D.M., AND MARSH, S.P., 1976, GEOLOGIC MAP OF THE SQUAW PASS QUADRANGLE, CLEAR CREEK, JEFFERSON, AND GILPIN COUNTIES, COLORADO: USGS MAP GQ-1337

Colorado Mining Photos

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