Commodities
PrimaryManganese, Silver, Gold
SecondaryLead, Zinc
Commodity typeM
Deposit
Deposit sizeN
WorkingsUnknown
Ore controlSee Comments
Materials
Ore mineralsPsilomelane, Wad
GangueBarite, Fluorite, Pyrite, Quartz, Rhodochrosite
Geology
Host rockQuartz Latite,Latite · Squirrel Gulch Latite;Eagle Gulch Latite
Associated rockQuartz Latite,Latite · Squirrel Gulch Latite;Eagle Gulch Latite
StructureSawatch Range, San Juan Volcanic Field, Rio Grande Rift, Bonanza Caldera, Bonanza Manganese Belt
Tectonic settingCentral Cordillera (Southern Rocky Mtns.)
AlterationEarly Barren Stage Of Alteration By Fumarolic Or Acid-Hot Spring Activity Resulted In Intense Silicification, Wallrock Replacement By Jasper And Alteration Products Hematite, Diaspore, Alunite, Barite, Zunyite, Rutile, And Kaolin Minerals. Later Mineralizing Stage By Alkaline Or Neutral Solutions Deposited Ore And Gangue And Caused Micaceous Alteration (Sericite And Chlorite) And Calcite, Quartz, And Pyrite.
Economic & production
Development statusOccurrence
Identification
Deposit ID10012415
MRDS IDD008029
RegionNA
Data scoreB
Coordinates38.29807, -106.1356
References
PATTON, H.B., 1916, GEOLOGY AND ORE DEPOSITS OF THE BONANZA DISTRICT, SAGUACHE COUNTY, COLORADO: COLORADO GEOLOGICAL SURVEY BULL. 9, 136 P.BURBANK, W.S., 1932, GEOLOGY AND ORE DEPOSITS OF THE BONANZA MINING DISTRICT, COLORADO: USGS PROF. PAPER 169, 166 P.