Aspen

The Aspen is a silver and lead mine located in Pitkin county, Colorado at an elevation of 7,900 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: Aspen

Commodity

Primary: Silver
Primary: Lead
Secondary: Platinum
Secondary: Gold
Secondary: Zinc

Location

State: Colorado
County: Pitkin
District: Roaring Fork District

Land Status

Not available

Holdings

Not available

Workings

Not available

Ownership

Not available

Production

Not available

Deposit

Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Years of Production:
Organization:
Significant: N
Deposit Size: S

Physiography

General Physiographic Area: Rocky Mountain System
Physiographic Province: Southern Rocky Mountains

Mineral Deposit Model

Model Name: Placer Au-PGE

Orebody

Form: IF PLACER, STREAM SEDIMENT DEPOSITS

Structure

Type: R
Description: Castle Creek Fault With About 5,000 Ft Displacement

Type: L
Description: Local Folds And Faults

Alterations

Not available

Rocks

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

Analytical Data

Analytical Data: AU:PT=1:1
Analytical Data: $1.03/TON (0.05 OZ/TON, 1.7 PPM) AU, $1.50/TON (0.05 OZ/TON, 1.7 PPM) PT - CONCENTRATION 600 LB/TON GRAVEL

Materials

Ore: Galena
Gangue: Barite

Comments

Comment (Workings): TUNNEL

Comment (Geology): GEOLOGY GIVEN IS FOR LODE DEPOSITS IN DISTRICT

Comment (Location): OLD MINING CLAIMS SURROUND ASPEN; THERE ARE MANY ADIT AND SHAFT SYMBOLS SHOWN ON TOPO MAP. LOCATION GIVEN IS FOR MOUTH OF HUNTER CREEK AT ROARING CREEK JUST NORTH OF ASPEN BASED ON THE ASSUMPTION THAT DAY AND RICHARDS' INFORMATION IS FOR A PLACER DEPOSIT INFO FROM LAND.ST :01?

Comment (Production): PGM PROD NOT VERIFIED

Comment (Deposit): MOST OF ORE IS IN FISSURE VEINS. DAY AND RICHARDS DATA MORE LIKELY FROM PLACER ACCUMULATIONS IN DISTRICT

References

Reference (Deposit): DAY, D.T., AND RICHARDS, R.H., 1906, USEFUL MINERALS IN THE BLACK SANDS OF THE PACIFIC SLOPE: U.S. GEOLOGICAL SURVEY MINERAL RESOURCES OF THE UNITED STATES, CALENDAR YEAR 1905, P. 1192-1193.

Reference (Deposit): VANDERWILT, J.W., 1947, MINERAL RESOURCES OF COLORADO: COLORADO MINERAL RESOURCES BOARD, P. 180-182.

Colorado Mining Photos

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