Commodities
PrimaryGold, Lead, Silver
TertiaryZinc, Bismuth
Commodity typeM
Deposit
Deposit sizeS
Ore controlSee Comments
Geology
Host rockAndesite · Rawley Andesite
Associated rockAndesite · Rawley Andesite
StructureSawatch Range, San Juan Volcanic Field, Rio Grande Rift, Bonanza Caldera
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 Daolin Minerals. Later Mineralizing Stage By Alkaline Or Neutral Solutions Deposited Ore And Gangue And Caused Micaceous Altera Tion (Sericite And Chlorite) And Calcite, Quartz, And Pyrite.
Economic & production
Development statusPast Producer
Last production1930
Identification
Deposit ID10101747
MRDS IDD008226
RegionNA
Data scoreB
Coordinates38.19168, -106.18949
References
PATTON, H.B., 1916, GEOLOGY AND ORE DEPOSITS OF THE BONZNZA 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-1531.COLO. DIV. MINES INSP. REPTS. 2/22/28, 9/14/29, 6/19/30Phillips, S.E., 1982, Geology and economic mineral potential of the Klondike Mine area, Saguache County, Colorado: University of Texas at El Paso, M.S. thesis, 97 p.BLM QUAD SW-11