Dawson Mountain-Surprise Group

The Dawson Mountain-Surprise Group is a copper mine located in Fremont county, Colorado at an elevation of 7,001 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: Dawson Mountain-Surprise Group
Secondary: Copper Boy 1902
Secondary: Unpatented Claims: Sam 1-15 1977 Part

Commodity

Primary: Copper
Secondary: Silver
Secondary: Gold

Location

State: Colorado
County: Fremont
District: Grape Creek Area

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

Type: Unknown

Ownership

Owner Name: Pacific Coast Mines (Sam Claims-

Production

Year: 1902
Mined: 442.890 mt
Description: Ap_Grade: ^2.90% Cu, 0.77 Oz/Ton Ag, 0.05 Oz/Ton Au

Deposit

Record Type: Site
Operation Category: Past Producer
Operation Type: Surface-Underground
Year First Production: 1902
Year Last Production: 1902
Discovery Year: 1902
Discovery Method: Ore-Mineral In Place
Years of Production:
Organization:
Significant: N
Deposit Size: S

Physiography

General Physiographic Area: Interior Plains
Physiographic Province: Great Plains Province
Physiographic Section: Colorado Piedmont

Mineral Deposit Model

Model Name: Stratabound Precambrian sulfide, Colorado and Wyoming

Orebody

Not available

Structure

Type: R
Description: Northern Wet Mountains, Canon City Embayment, Thirtynine Mile Volcanic Field

Type: L
Description: Shear Zone (Gossan); Main Fault Strikes N 75 E, Dips 60-85 Se; Webster Park Graben; Ilse Fault

Alterations

Not available

Rocks

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

Name: Granodiorite
Role: Associated
Age Type: Host Rock Unit
Age Young: Neoproterozoic

Name: Granodiorite
Role: Associated
Age Type: Associated Rock
Age Young: Paleoproterozoic

Name: Granodiorite
Role: Associated
Age Type: Associated Rock Unit
Age Young: Paleoproterozoic

Analytical Data

Analytical Data: CU (0.37-0.76%), AG (0.4-0.6 OZ/TON), AU (0.02-0.03 OZ/TON), ZN (0.03-0.14%)

Materials

Ore: Malachite
Ore: Silver
Ore: Gold
Gangue: Magnetite
Gangue: Biotite
Gangue: Quartz

Comments

Comment (Production): PRODUCTION FROM COPPER BOY CLAIMS

Comment (Workings): 3 PITS, 3 INACCESSIBLE ADITS; PIT 1 IS 8 X 10 X 7 FT DEEP, PIT 2 IS GLORY HOLE 29 FT DIAMETER, 12 FT DEEP; PIT 3 IS SMALL PROSPECT; MASSIVE DUMP SURROUNDS PIT 2. ADIT 1 DRIFTS N 78 W; ADIT 2 DRIFTS N 75 E; ADIT 3 DRIFTS N 40 E FOR 45 FT, WITH 100-FT WINZE

Comment (Location): APPROXIMATELY 5 MILES SW OF CANON CITY ON TEMPLE CANYON ROAD, THEN 1 MILE SW ON JEEP ROAD TO OLD COPPER BOY PROSPECTS ; INFO FROM LAND.ST :(1976)

Comment (Other Database): RECORD NUMBER 25 IS A POTENTIAL DUPLICATE OF THIS RECORD

Comment (Deposit): DEPOSIT ON SHEAR ZONE 520 FT LONG, ALONG STRIKE; HIGHLY OXIDIZED

References

Reference (Deposit): Heinrich, E.W., 1981, Precambrian tungsten and copper-zinc skarn deposits of south-central Colorado: Colorado Geological survey Resource Series 21, 115 p.

Reference (Deposit): Sunshine Mining Co. Colorado exploration files, unpublished data, Colorado Geological Survey.

Reference (Deposit): TAYLOR, R. B., SCOTT, G. R., WOBUS, R. A., AND EPIS, R. C., 1975. RECONNAISSANCE GEOLOGIC MAP OF THE ROYAL GORGE QUADRANGLE, FREMONT AND CUSTER COUNTIES, COLORADO: USGS MAP I-869, 1: 62,500.

Reference (Deposit): Sheridan, D.M., Raymond, W.H., Taylor, R.B., and Hasler, J.W., 1990, Metallogenic map of stratabound exhalative and related occurrences in Colorado: U.S. Geological Survey Miscellaneous Investigations Series Map I-1971, scale 1:1,000,000

Reference (Production): COKER, 1982

Reference (Deposit): COKER, R. J., 1982, MINERAL RESOURCES OF THE ARKANSAS CANYON PLANNING UNIT WITH SPECIAL EMPHASIS ON THE FORMER GRAPE CREEK WILDERNESS STUDY AREAS AND THE MCINTYRE HILLS WILDERNESS STUDY AREA: US BLM MINERAL REPORT, P. 56-58

Colorado Mining Photos

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