Bonus Extension Group

The Bonus Extension Group is a beryllium mine located in Chaffee county, Colorado at an elevation of 8,556 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

Name: Bonus Extension Group  

State:  Colorado

County:  Chaffee

Elevation: 8,556 Feet (2,608 Meters)

Commodity: Beryllium

Lat, Long: 38.59944, -105.99999

Map: View on Google Maps

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.


Satelite image of the Bonus Extension Group

Bonus Extension Group MRDS details

Site Name

Primary: Bonus Extension Group


Commodity

Primary: Beryllium
Secondary: Niobium (Columbium)
Secondary: Tantalum
Tertiary: Mica
Tertiary: Feldspar


Location

State: Colorado
County: Chaffee
District: Salida Area


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: John Kostelc
Home Office: Salida, Co.
Years: 1974 -


Production

Not available


Deposit

Record Type: Site
Operation Category: Producer
Operation Type: Unknown
Discovery Year: 1955
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: Southern Mosquito Range, Arkansas Valley Graben

Type: L
Description: Ne-Trending Zone Of Pegmatite Dikes


Alterations

Not available


Rocks

Name: Schist
Role: Host
Age Type: Host Rock Unit
Age Young: Neoproterozoic

Name: Schist
Role: Host
Age Type: Host Rock
Age Young: Neoproterozoic


Analytical Data

Analytical Data: COLUMBITE-TANTALITE ABOUT 35% TA2O5


Materials

Ore: Beryl
Ore: Microcline
Ore: Muscovite
Ore: Tantalite
Ore: Columbite
Gangue: Martite
Gangue: Magnetite
Gangue: Quartz
Gangue: Biotite
Gangue: Albite


Comments

Comment (Commodity): BERYL CRYSTALS TO 3 FT LONG

Comment (Location): ON RIDGE SOUTH OF LONGS GULCH, 12 MILES NORTH OF SALIDA VIA COUNTY ROAD 180, LONGS GULCH ROAD, AND MINE ACCESS ROAD ; INFO FROM LAND.ST :(1976); PREVIOUS QUAD DESIGNATION = MONTROSE 1:250000

Comment (Deposit): 9 EN-ECHELON EXPOSURE OF UNZONED BODIES

Comment (Workings): LARGE OPEN CUT 150 X 25 X 15 FT DEEP

Comment (Deposit): Discovery Year: 1950'S


References

Reference (Deposit): MEEVES, H.C., HARRER, C.M., SALSBURY, M.H., KONSELMAN, A.S., SHANNON, S.S., JR., 1966, RECONNAISSANCE OF BERYLLIUM-BEARING PEGMATITE DEPOSITS IN SIX WESTERN STATES: ARIZONA, COLORADO, NEW MEXICO, SOUTH DAKOTA, UTAH, AND WYOMING: USBM INFORMATION CIRCULAR 8298, P. 23.

Reference (Deposit): BOARDMAN, S. J., 1971, PRECAMBRIAN GEOLOGY AND MINERAL DEPOSITS OF THE SALIDA AREA, CHAFFEE COUNTY, COLORADO: PH.D. THESIS, UNIVERSITY OF MICHIGAN, 131 P.

Reference (Deposit): VAN ALSTINE, R.E., 1974, GEOLOGY AND MINERAL DEPOSITS OF THE PONCHA SPRINGS SE QUADRANGLE, CHAFFEE COUNTY, COLORADO: USGS PROFESSIONAL PAPER 829, 19 P.

Reference (Production): VAN ALSTINE, R.E. (1974)

Reference (Deposit): BOARDMAN, S. J., 1976, GEOLOGY OF THE PRECAMBRIAN METAMORPHIC ROCKS OF THE SALIDA AREA, CHAFFEE COUNTY, COLORADO: THE MOUNTAIN GEOLOGIST, V. 13, NO. 3, P. 89-100.


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