Description
George Gilmore
Commodities
PrimaryGold
Commodity typeM
Deposit
Model154: Epithermal quartz-alunite Au
Deposit sizeS
Ore controlQuartz Veins In Post-Intrusion Extensional Faulting Near Platoro Fault Zone
Materials
Ore mineralsGold, Petzite, Pyrite
GangueQuartz
Geology
Host rockMonzonite,Andesite · Intrusive Rocks--Monzonite (Alamosa River Stock);Summitville Andesite
Associated rockMonzonite,Andesite · Intrusive Rocks--Monzonite (Alamosa River Stock);Summitville Andesite
StructureSan Juan Volcanic Field, Platoro Caldera, Summitville Caldera, Alamosa River Stock, Platoro Fault Zone
Tectonic settingCentral Cordillera (Southern Rocky Mtns)
AlterationSee Comments
Economic & production
Development statusPast Producer
Discovery year1912
Identification
Deposit ID10014025
MRDS IDD010634
Alternate namesNellie Nelson, MS 16470, Unpatented Claims: Gilmore, Gilmore District, Patented Claims: Little George Placer, MS 12307, Bryan, MS 12308, Sixteen To One, MS 12308, Ophir, MS 12308, Roe, MS 16470, Boyd, MS 16470, Helen, MS 16470, Peterson
RegionNA
Data scoreB
Coordinates37.35835, -106.58949
References
PATTON, H.B., 1917, GEOLOGY AND ORE DEPOSITS OF THE PLATORO-SUMMITVILLE MINING DISTRICT, COLORADO: CGS BULL. 13.LIPMAN, P.W., 1974, GEOLOGIC MAP OF THE PLATORO CALDERA AREA, SOUTHEASTERN SAN JUAN MOUNTAINS, SOUTHWESTERN COLORADO: USGS MAP I-828.LIPMAN, P.W., 1975, EVOLUTION OF THE PLATORO CALDERA COMPLEX AND RELATED VOLCANIC ROCKS, SOUTHEASTERN SAN JUAN MOUNTAINS, COLORADO: USGS PROF. PAPER 852.STEVEN, T.A., AND LIPMAN, P.W., 1976, CALDERAS OF THE SAN JUAN VOLCANIC FIELD, SOUTHWESTERN COLORADO: USGS PROF. PAPER 958.BIRD, W.H., 1972, MINERAL DEPOSITS OF THE SOUTHERN PORTION OF THE PLATORO CALDERA COMPLEX, SOUTHEAST SAN JUAN MOUNTAINS, COLORADO: MTN. GEOLOGIST, V. 9, NO. 4, P. 379-387.LIPMAN, P.W., AND STEVEN, T.A., 1970, RECONNAISSANCE GEOLOGY AND ECONOMIC SIGNIFICANCE OF THE PLATORO CALDERA, SOUTHEASTERN SAN JUAN MOUNTAINS, COLORADO: USGS PROF. PAPER 700-C, P. C19-C29.GOW, T.T., AND YANG, W.T., 1914, SURVEY NORTHWEST OF GILMORE, CONEJOS COUNTY, COLORADO: COLORADO SCHOOL OF MINES THESIS T-465.CALKIN, W.S., 1967, GEOLOGY, ALTERATION, AND MINERALIZATION OF THE ALUM CREEK AREA, SAN JUAN VOLCANIC FIELD, COLORADO: COLORADO SCHOOL OF MINES THESIS T-1113.