Unnamed Gold Occurrence

The Unnamed Gold Occurrence is a mine located in Douglas county, Colorado at an elevation of 6,572 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: Unnamed Gold Occurrence

Commodity

Tertiary: Silver
Tertiary: Gold

Location

State: Colorado
County: Douglas
District: Castle Rock Area

Land Status

Land ownership: State
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

Not available

Production

Not available

Deposit

Record Type: Site
Operation Category: Occurrence
Deposit Type: Placer
Operation Type: Unknown
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

Not available

Orebody

Not available

Structure

Type: R
Description: Denver Basin

Type: L
Description: Denver Basin

Alterations

Alteration Type: L
Alteration Text: Denver Basin

Rocks

Name: Gravel
Role: Host
Age Type: Host Rock
Age Young: Holocene

Analytical Data

Analytical Data: 0.150, LT 0.1, LT 0.1
Analytical Data: 0.225, 4.5, 0.2 TO 3.2
Analytical Data: 0.175, 2.1, 0 TO 2.1
Analytical Data: EACH SET OF VALUES IS AU GRAIN SIZE (MM), WT % AG IN GRAIN CENTER, RANGE OF WT % AG IN GRAIN RIM: 0.312, 0.4, 0
Analytical Data: AU-AG ANALYSIS FROM DESBOROUGH AND OTHERS (1970, LOCALITY 7)

Materials

Ore: Silver
Ore: Gold

Comments

Comment (Geology): PROBABLE SOURCE OF GOLD IS CASTLE ROCK CONGLOMERATE (LOWER OLIGOCENE)

Comment (Location): ON CHERRY CREEK 0.35 MILE EAST OF COLO. 83 5.5 MILES SSE OF FRANKTOWN ; INFO FROM LAND.ST :(1974)

References

Reference (Deposit): DESBOROUGH, G.A., AND OTHERS, 1970, PLACER GOLD OF UNIQUE FINENESS IN DOUGLAS AND ELBERT COUNTIES, COLORADO: USGS PROF. PAPER 700-D, P. D134-D139.

Reference (Deposit): TRIMBLE, D.E., AND MACHETTE, M.N., 1979, GEOLOGIC MAP OF THE COLORADO SPRINGS-CASTLE ROCK AREA, FRONT RANGE URBAN CORRIDOR, COLORADO: USGS MAP 1-857-F.

Colorado Mining Photos

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