Commodities
PrimaryLead, Gold, Silver
SecondaryZinc, Copper
Commodity typeM
Deposit
Deposit sizeS
Ore controlSee Comments
Geology
Host rockAndesite · Rawley Andesite;Silicic Flows And Intrusives
Associated rockAndesite · Rawley Andesite;Silicic Flows And Intrusives
StructureSawatch Range, San Juan Volcanic Field, Rio Grande Rift, Bonanza Caldera, Concentric And Radial Fractures
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 statusPast Producer
Identification
Deposit ID10012550
MRDS IDD008223
RegionNA
Data scoreB
Coordinates38.25195, -106.13866
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.MARRS, R.W., 1973, APPLICATION OF REMOTE-SENSING TECHNIQUES TO THE GEOLOGY OF THE BONANZA VOLCANIC CENTER: COLORADO SCHOOL OF MINES PH.D. THESIS T-1531BLM QUAD SW-11BONANZA QUAD