Commodities
PrimaryLead, Silver
SecondaryGold, Copper, Zinc
Commodity typeM
Deposit
Model82: Epithermal veins
Deposit sizeM
WorkingsUnknown
Orebody formVEINS
Ore controlMineralized Fissures, Jointing Striking Nw
Materials
Ore mineralsArgentite, Chalcopyrite, Galena, Gold, Hessite, Polybasite, Pyrargyrite, Sphalerite, Tetrahedrite
GangueBarite, Calcite, Chalcedony, Garnet, Quartz, Topaz
Geology
Host rockGneiss,Obsidian,Tuff,Volcanic Breccia (Agglomerate),Rhyolite · Undivided Gneiss, San Isabel Granite Of Boyer Reached At 1850 Ft, Still Mineralized
Associated rockGneiss,Obsidian,Tuff,Volcanic Breccia (Agglomerate),Rhyolite · Silver Cliff Rhyolite Unit 2
StructureSilver Cliff Volcanic Center, Wet Mtns, Wet Mtn Valley, Silver Cliff Graben, Fault; Geyser Vent, Breccia Pipes
Tectonic settingCentral Cordillera (Southern Rocky Mtns)
AlterationWeak Argillization
Economic & production
Development statusPast Producer
First production1880
Last production1911
Discovery year1878
Identification
Deposit ID10012344
MRDS IDD007922
Alternate namesFleetwood Tunnel, Security-Geyser
RegionNA
Data scoreB
Coordinates38.1389, -105.4414
References
CROSS, WHITMAN, 1896, GEOLOGY OF SILVER CLIFF AND THE ROSITA HILLS, COLORADO: USGS 17TH ANN. REPORT, PT 2, P. 263-403EMMONS, S.F., 1896, THE MINES OF CUSTER COUNTY, COLORADO: USGS 17TH ANN. REPORT, PT 2, P. 405-472.FIELDMAN, D.W. AND CROWLEY, F.P., 1980, SILVER DEPOSITS IN THE SOUTHERN PORTION OF THE SILVER CLIFF CALDERA, IN SILVER CLIFF VOLCANIC CENTER AND TALLAHASSEE CREEK URANIUM DEPOSITS: DENVER REGIONAL EXPLORATION GEOLOGISTS GUIDEBOOK, P. 1-14.SHARP, W.M., 1978, GEOLOGIC MAP OF THE SILVER CLIFF AND ROSITA VOLCANIC CENTERS, CUSTER COUNTY, COLORADO: USGS MAP I-1081.COLORADO DIVISION MINES INSPECTOR REPORTS, ANNUAL REPORTS