Little Bobby Vein

The Little Bobby Vein is a gold mine located in Larimer county, Colorado at an elevation of 8,369 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: Little Bobby Vein

Commodity

Primary: Gold
Secondary: Copper
Secondary: Lead

Location

State: Colorado
County: Larimer
District: Mayesville 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

Not available

Production

Not available

Deposit

Record Type: Site
Operation Category: Occurrence
Deposit Type: Vein
Operation Type: Unknown
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, Sherman Batholith

Type: L
Description: Poudre River Shear Zone

Alterations

Not available

Rocks

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

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

Name: Pegmatite
Role: Associated
Age Type: Associated Rock Unit
Age Young: Neoproterozoic

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

Analytical Data

Analytical Data: GRAB SAMPLE CONTAINED 0.90 OZ/TON AU
Analytical Data: CHANNEL SAMPLE CONTAINED 0.30 OZ/TON AU

Materials

Ore: Pyrite
Ore: Galena
Gangue: Limonite

Comments

Comment (Location): LOVERING AND GODDARD CITE LOCATION AS APPROX 1.5 MILES SW OF RUGH RANCH. ELEV AND LAT-LONG GIVEN ARE FOR CENTER N2 N2 S2 SEC. 02 ON 8370-FT CONTOUR. ; INFO FROM LAND.ST :(1980)

Comment (Workings): ONE SHAFT OF UNKNOWN DEPTH AND ONE SHORT ADIT

Comment (Deposit): VEIN STRIKES N 70 TO 80 E, DIPS 50 N, AND CONSISTS OF 1 FT OF CRUSHED GOUGY ROCK AND 4 FT OF LIMONITE-STAINED SHEETED PEGMATITE ADJACENT TO MAIN SHEAR ZONE. VEIN MATERIAL IS CHIEFLY LIMONITE-STAINED DRUSY BRECCIA SEAMED WITH QUARTZ AND CONTAINING DISSEMINATED CHALCOPYRITE, PYRITE, AND GALENA.

References

Reference (Deposit): LOVERING, T.S., AND GODDARD, E.N., 1950, GEOLOGY AND ORE DEPOSITS OF THE FRONT RANGE, COLORADO: USGS PROF. PAPER 223, P. 286

Colorado Mining Photos

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