The Grand Republic is a gold mine located in Boulder county, Colorado.
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.
Grand Republic MRDS details
Site Name
Primary: Grand Republic
Commodity
Primary: Gold
Location
State: Colorado
County: Boulder
District: Gold Hill
Land Status
Not available
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
Years of Production:
Organization:
Significant: N
Physiography
General Physiographic Area: Rocky Mountain System
Physiographic Province: Southern Rocky Mountains
Mineral Deposit Model
Model Name: Polymetallic veins
Model Name: Alkaline Au-Te (Au-Ag-Te veins)
Orebody
Not available
Structure
Not available
Alterations
Not available
Rocks
Name: Granite
Role: Host
Age Type: Host Rock
Age Young: Neoproterozoic
Analytical Data
Not available
Materials
Ore: Gold
Comments
Comment (Geology): GEOL.DESC: GRANITE CUT BY PEGMATITE AND APLITE DIKES. HOOSIER BRECCIA REEF OFFSET 100 FT. BY GRAND REPUBLIC VEIN. GOLD TELLURIDES WITH PYRITE CHIEF ORE MINERALS
References
Reference (Deposit): LOVERING & GODDARD, 1950, USGS P.P. 223, PG. 251-253
Reference (Deposit): USGS GOLD HILL TOPO QUAD, 1957, 7 1/2 MIN
Reference (Deposit): CONSV. DIV. COMP. DATE, 1,62
Colorado Mining Photos
Check out this collection of Colorado's best historic mining photos: Incredible Photos of Colorado Mining Scenes.
