Colorado · Rio Grande County
Past Producer
Iowa Mine
Rio Grande County, Colorado, United States
Silver Gold Copper
Land & claims · BLM · live
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Surface manager + active mining claims at this point, live from BLM. The "open to location" notes are a general 1872-Mining-Law guide, not BLM output — decision-support only; verify with BLM MLRS and on the ground before staking or entry.
Commodities
PrimarySilver, Gold
SecondaryCopper
Commodity typeMetallic
Deposit
Deposit sizeSmall
WorkingsSurface/Underground
Ore controlQuartz-Alunite Solfataric Replacement Bodies Following Nw-Trending Fractures Near Sw Margin Of South Mountain Feeder Conduit
Geology
Host rockQuartz Latite · Quartz Latite Of South Mountain;Summitville Andesite
Associated rockQuartz Latite,Andesite · Quartz Latite Of South Mountain;Summitville Andesite
StructureSan Juan Volcanic Field, Platoro Caldera, Summitville Caldera, Summitville Fault, South Mountain Dome
Tectonic settingCentral Cordillera (Southern Rocky Mtns)
AlterationQuartz-Alunite Solfataric Alteration
Economic & production
Development statusPast Producer
First production1882
Discovery year1882
Description
Governor Gier (Iowa)
Community notes
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References
PATTON, H.B., 1917, GEOLOGY AND ORE DEPOSITS OF THE PLATORO-SUMMITVILLE MINING DISTRICT, COLORADO: CGS BULL. 13.STEVEN, T.A., AND RATTE, J.C., 1960, GEOLOGY AND ORE DEPOSITS OF THE SUMMITVILLE DISTRICT, SAN JUAN MOUNTAINS, COLORADO: USGS PROF. PAPER 343LIPMAN, P.W., 1974, GEOLOGIC MAP OF THE PLATORO CALDERA AREA, SOUTHEASTERN SAN JUAN MOUNTAINS, SOUTHWESTERN COLORADO: USGS MAP I-828.CARPER, A.F., 1914, GEOLOGY AND ORE DEPOSITS OF SOUTH MOUNTAIN, RIO GRANDE COUNTY, COLORADO: COLORADO SCHOOL OF MINES THESIS T-464.BLM MINERAL SURVEY MS 895
Identification
Deposit ID10101861
MRDS IDD010654
Alternate namesPatented Claim: Iowa, Ms 895
RegionNA
Data scoreB
Coordinates37.4203, -106.5956
Base: USGS MRDS (public domain, frozen 2011). Community notes © their authors, CC-BY. Land data live from BLM.