Commodities
PrimaryLead, Zinc, Copper, Silver
SecondaryGold
TertiaryManganese
Commodity typeM
Deposit
Deposit sizeS
WorkingsUnderground
Orebody formTABULAR
Ore controlOre Deposition Controlled By Size And Character Of Faults And Fractures Related To Subsidence Of Bonanza Caldera. Ores Have Affinity For (1) Fissure Wallrocks Entirely Of Andesite, Or Latite, Or Andesite And Latite In Fault Contact; (2) Fis
Materials
Ore mineralsBornite, Chalcopyrite, Covellite, Enargite, Galena, Pyrite, Sphalerite, Stromeyerite
GangueBarite, Calcite, Jasper, Pitchblende, Quartz, Rhodochrosite, Siderite, Uraninite
Geology
Host rockAndesite
Associated rockAndesite
Economic & production
Development statusPast Producer
First production1882
Last production1969
Discovery year1880
Identification
Deposit ID10013082
MRDS IDD009180
RegionNA
Data scoreB
Coordinates38.31445, -106.14338
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 MINNING DISTRICT, COLORADO: USGS PROF. PAPER 169, 166 P.NELSON-MOORE, J.L., COLLINS, P.B., AND HORNBAKER, A.L., 1978 RADIOACTIVE MINERAL ACCURRENCES OF COLORADO AND BIBLIOGRAPHY: COLO. GEOL.SURVEY BULL. 40, P. 393.PRODUCTION FIGURES FOR 1902-1930 FROM BURBANK (1932) AS COMPILED FROM USGS, USBM, AND COMPANY RECORDS. PRODUCTION FIGURES FOR 1936-1969 AND ORE GRADES FOR 1916-1969 COMPILED FROM COLO. DIVISION OF MINES ANNUAL OPERATORS REPTS.