Hilltop No. 23 Mine

The Hilltop No. 23 Mine is a beryllium mine located in Larimer county, Colorado at an elevation of 7,841 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: Hilltop No. 23 Mine
Secondary: Hilltop Group

Commodity

Primary: Beryllium
Tertiary: Uranium

Location

State: Colorado
County: Larimer
District: Crystal Mountain (Storm Mountain) Pegmatite District

Land Status

Land ownership: National Forest
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: American Beryl Corp.
Home Office: Fort Collins, Co.
Years: 1958 -

Production

Not available

Deposit

Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Year Last Production: 1958
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

Type: L
Description: Thompson Canyon Fault, Mt Olympus Batholith, Ne-Trending Folds

Alterations

Not available

Rocks

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

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

Analytical Data

Not available

Materials

Ore: Beryl

Comments

Comment (Location): IN LAMPTON RIDGE-HYATT HILL-BALD RIDGE AREA ALONG STRINGTOWN GULCH AND BEAR GULCH, 5.2 MILES SE OF CRYSTAL MOUNTAIN. ELEV AND LAT-LONG GIVEN ARE FOR APPROX COMMON SECTION CORNER. ; INFO FROM LAND.ST :(1980)

Comment (Deposit): UNZONED PEGMATITE

Comment (Workings): SMALL OPEN CUTS

References

Reference (Deposit): THURSTON, W.R., 1955, PEGMATITES OF THE CRYSTAL MOUNTAIN DISTRICT, LARIMER COUNTY, COLORADO: USGS BULL. 1011, 185 P., 13 PLS.

Reference (Deposit): MEEVES, H.C., AND OTHERS, 1966, RECONNAISSANCE OF BERYLLIUM-BERING PEGMATITE DEPOSITS IN SIX WESTERN STATES: USBM IC-8298, P. 30.

Reference (Deposit): COLORADO DIV. MINES INF. REPT.

Colorado Mining Photos

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