Two Sisters Group

The Two Sisters Group is a gold, silver, lead, and zinc mine located in Gilpin 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

Name: Two Sisters Group  

State:  Colorado

County:  Gilpin


Primary Mineral: Gold, Silver, Lead, Zinc

Lat, Long: 39.80861, -105.52389

Map: View on Google Maps

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.

Satelite image of the Two Sisters Group

Two Sisters Group MRDS details

Site Name

Primary: Two Sisters Group


Primary: Gold
Primary: Silver
Primary: Lead
Primary: Zinc
Tertiary: Uranium
Tertiary: Vanadium


State: Colorado
County: Gilpin
District: Central City

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.


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Owner Name: Robert Gilmore
Home Office: Colorado
Info Year: 1974

Owner Name: United Mining And Leasing Corp.
Home Office: Colorado
Info Year: 1975


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Record Type: Site
Operation Category: Past Producer
Operation Type: Underground
Mining Method: Unknown
Discovery Year: 1953
Years of Production:
Significant: N


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

Mineral Deposit Model

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Analytical Data

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Unknown: Zincite
Unknown: Gold
Unknown: Galena
Unknown: Chalcopyrite
Unknown: Cerussite
Unknown: Argentite
Unknown: Uraninite
Unknown: Torbernite
Unknown: Sphalerite
Unknown: Pyrite


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Reference (Deposit): REF: MAS FILE