Mine detail: Little Annie Placers

Previously called 'Peterson and Brandt PlacersClaims: Peterson Placer, MS 74Brandt Placer, MS 75'

<< Back to the map

Location

Lat / long:

37.43141, -106.60282

Resource(M)

Primary:	Gold
Ore:	Gold
Discovery year:	1870

Production

Operation type:	Unknown
Deposit type:	Placer
Production size:	Small
Development status:	Past Producer
First production started:	1875

Geology

Host rock:	Alluvium;Colluvium
Host type:	Sand and Gravel
Associated rock:	Quartz Latite Of South Mountain
Associated type:	Quartz Latite
Structure:	San Juan Volcanic Field, Platoro Caldera, Summitville Caldera, Summitville Fault, South Mountain Dome
Tectonic:	Central Cordillera (Southern Rocky Mtns)

References

MRDS	D010655
DEP	10014039
Reference	{Deposit:: PARKER, B.H., JR., 1974, GOLD PLACERS OF COLORADO: COLORADO SCHOOL OF MINES QUART., V. 69, NO. 4, P. 208-210.}{Deposit:: PATTON, H.B., 1917, GEOLOGY AND ORE DEPOSITS OF THE PLATORO-SUMMITVILLE MINING DISTRICT, COLORADO: CGS BULL. 13.}{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.}{Deposit:: LIPMAN, P.W., 1974, GEOLOGIC MAP OF THE PLATORO CALDERA AREA, SOUTHEASTERN SAN JUAN MOUNTAINS, SOUTHWESTERN COLORADO: USGS MAP I-828.}{Deposit:: BLM MINERAL SURVEYS MS 74, 75}
Reporter	Schwochow, Stephen D.