Mine detail: Sherman District

Previously called 'Black Wonder, MS 1939Mountain View, MS 2621No. 2 Ruby, MS 2637Black Wonder Extension, MS 4663Sterling, MS 6267Nellie G., MS 6267Eastern Rebel Boy, MS 600Minnie Lee, MS 1473aMinnie Lee Mill Site, MS 1473bPatented Claims: George Washington, MS 312Colorado Placer, MS 375Rebel Boy, MS 599Gracie, MS 15503Niagara, MS 15503Conalan, MS 6267Dolphim, MS 6267Come Up, MS 8402Mineral Flower, MS 8402Black Wonder No. 2, MS 8493Crescent, MS 12429Meteor, MS 12429Tillman, MS 12429Wanimoo, MS 12429Morning Star, MS 12879I. X. L., MS 1289'

<< Back to the map

Location

Lat / long: 37.90251, -107.42285

Resource(M)

Primary: Silver, Gold
Secondary: Lead, Copper
Tertiary: Zinc, Bismuth, Molybdenum
Ore: Chalcopyrite, Galena, Molybdenite, Pyrite, Sphalerite, Tetrahedrite
Gangue: Barite, Calcite, Quartz
Discovery year: 1877

Production

Operation type: Unknown
Deposit type: Vein
Production size: Small
Development status: Past Producer
First production started: 1882
Last production ended: 1925

Geology

Host rock:Tuffaceous Sandstone Of Henson Member Of Silverton Volcanics
Host type:Quartz Monzonite,Diabase,Rhyolite,Andesite,Granite
Associated rock:Granite Of Cataract Canyon;Mafic Dikes;Henson And Pyroxene Andesite Members Of Silverton Volcanics;Ash-Flow Member Of Sunshine Peak Tuff
Associated type:Quartz Monzonite,Diabase,Rhyolite,Andesite,Granite
Structure:San Juan Volcanic Field, San Juan Depression, San Juan-Uncompahgre Calderas, Lake City Caldera, Silverton Caldera, Eureka Graben
Tectonic:Central Cordillera (Southern Rocky Mtns)

References

MRDSD011573
DEP10101902
Reference{Deposit:: LIPMAN, P.W., 1976, GEOLOGIC MAP OF THE LAKE CITY CALDERA AREA, WESTERN SAN JUAN MOUNTAINS, SOUTHWESTERN COLORADO: USGS MAP I-962.}{Deposit:: LIPMAN, P.W., 1976, CALDERA-COLLAPSE BRECCIAS IN THE WESTERN SAN JUAN MOUNTAINS, COLORADO: GEOL. SOC. AMERICA BULL., V. 87, NO. 10, P. 1397-1410.}{Deposit:: LIPMAN, P.W., AND OTHERS, 1973, REVISED VOLCANIC HISTORY OF THE SAN JUAN, UNCOMPAHGRE, SILVERTON, AND LAKE CITY CALDERAS IN THE WESTERN SAN JUAN MOUNTAINS: USGS JOUR. RESEARCH, V. 1, NO. 6, P. 627-642.}{Deposit:: LIPMAN, P.W., AND OTHERS, 1976, MULTIPLE AGES OF MID-TERTIARY MINERALIZATION AND ALTERATION IN THE WESTERN SAN JUAN MOUNTAINS, COLORADO: ECON. GEOLOGY, V. 71, NO. 3, P. 571-588.}{Deposit:: HON,KEN, AND MEHNERT, N.H., 1983, COMPILATION OF REVISED AGES OF VOLCANIC UBITS IN THE SAN JUAN MOUNTAINS, COLORADO--RECALCULATED K/AR AGE DETERMINATIONS USING IUGS CONSTANTS: USGS OPEN-FILE REPT. OFR-83-688.}{Deposit:: SLACK, J.F., 1980, MULTISTAGE VEIN ORES OF THE LAKE CITY DISTRICT, WESTERN SAN JUAN MOUNTAINS, COLORADO: ECON. GEOLOGY, V. 75, NO. 7, P. 963-991.}{Deposit:: STEVEN, T.A., AND LIPMAN, P.W., 1976, CALDERAS OF THE SAN JUAN VOLCANIC FIELD, SOUTHWESTERN COLORADO: USGS PROF. PAPER 958, P. 10-16.}{Deposit:: COLORADO DIV. MINES INF. REPTS.}{Deposit:: A BLM MINERAL SURVEYS MS 312, 375, 599, 600, 1289, 1473A&B, 1939, 2621, 2637, 46638, 6267, 8402, 8493, 12429, 12879, 15503}{Deposit:: WORCESTER, P.G., 1919, MOLUBDENUM DEPOSITS OF COLORADO WITH GENERAL NOTES ON THE MOLYBDENUM INDUSTRY: CGS BULL. 14, P. 68.}
ReporterSchwochow, Stephen D.