The Little Annie Placers is a gold mine located in Rio Grande county, Colorado at an elevation of 11,355 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
Elevation: 11,355 Feet (3,461 Meters)
Commodity: Gold
Lat, Long: 37.43139, -106.60222
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.
Little Annie Placers MRDS details
Site Name
Primary: Little Annie Placers
Secondary: Peterson and Brandt Placers
Secondary: Claims: Peterson Placer, MS 74
Secondary: Brandt Placer, MS 75
Commodity
Primary: Gold
Location
State: Colorado
County: Rio Grande
District: Summit (Summitville) District
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
Not available
Ownership
Not available
Production
Not available
Deposit
Record Type: Site
Operation Category: Past Producer
Deposit Type: Placer
Operation Type: Unknown
Year First Production: 1875
Discovery Year: 1870
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: San Juan Volcanic Field
Type: L
Description: Platoro Caldera, Summitville Caldera, Summitville Fault, South Mountain Dome
Alterations
Not available
Rocks
Name: Quartz Latite
Role: Associated
Age Type: Associated Rock Unit
Age Young: Miocene
Name: Quartz Latite
Role: Associated
Age Type: Host Rock
Age Young: Holocene
Name: Quartz Latite
Role: Associated
Age Type: Associated Rock
Age Young: Miocene
Analytical Data
Not available
Materials
Ore: Gold
Comments
Comment (Location): ALONG WIGHTMAN FORK ON WEST SIDE OF SUMMITVILLE AT NORTH BASE OF SOUTH MTN. ELEV AND LAT-LONG GIVEN ARE FOR COMMON SECTION CORNER. ; INFO FROM LAND.ST :1975
Comment (Development): NAMES ABOVE WERE DISCOVERERS OF AU IN DISTRICT.
Comment (Deposit): AU IN ALLUVIUM AND COLLUVIUM ALONG WIGHTMAN FORK DERIVED FROM MINERALIZED QUARTZ LATITE IN SOUTH MTN DOME. NO PLACERS OR SIGNIFICANT VALLEY-FILL DEPOSITS IN NARROW CANYON BELOW CROPSY CREEK.
References
Reference (Deposit): PARKER, B.H., JR., 1974, GOLD PLACERS OF COLORADO: COLORADO SCHOOL OF MINES QUART., V. 69, NO. 4, P. 208-210.
Reference (Deposit): PATTON, H.B., 1917, GEOLOGY AND ORE DEPOSITS OF THE PLATORO-SUMMITVILLE MINING DISTRICT, COLORADO: CGS BULL. 13.
Reference (Deposit): STEVEN, T.A., AND RATTE, J.C., 1960, GEOLOGY AND ORE DEPOSITS OF THE SUMMITVILLE DISTRICT, SAN JUAN MOUNTAINS, COLORADO: USGS PROF. PAPER 343.
Reference (Deposit): LIPMAN, P.W., 1974, GEOLOGIC MAP OF THE PLATORO CALDERA AREA, SOUTHEASTERN SAN JUAN MOUNTAINS, SOUTHWESTERN COLORADO: USGS MAP I-828.
Reference (Deposit): BLM MINERAL SURVEYS MS 74, 75
Colorado Mining Photos
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