Commodities
PrimaryManganese
Commodity typeM
Deposit
Deposit sizeN
Ore controlFractures And Breccias In Volcanic Flow/Breccia Complex
Geology
Host rockQuartz Latite
Associated rockRhyodacite,Quartz Latite,Andesite · Fish Canyon Tuff;Early Intermediate-Composition Lavas And Related Rocks--Lava Flows
StructureSan Juan Volcanic Field, Lost Lake Caldera
Tectonic settingCentral Cordillera (Southern Rocky Mtns)
Economic & production
Development statusOccurrence
Identification
Deposit ID10014697
MRDS IDD011584
Alternate namesPiedra Niegro Mining Claim
RegionNA
Data scoreB
Coordinates37.81668, -107.33535
References
LIPMAN, P.W., 1976, GEOLOGIC MAP OF THE LAKE CITY CALDERA AREA, WESTERN SAN JUAN MOUNTAINS, SOUTHWESTERN COLORADO: USGS MAP I-962.MUILENBURG, G.A., 1919, MANGANESE DEPOSITS OF COLORADO: CGS BULL. 15, P. 42-45.USBM MILS LISTING 0080530075STEVEN, T.A., AND LIPMAN, P.W., 1976, CALDERAS OF THE SAN JUAN VOLCANIC FIELD, SOUTHWESTERN COLORADO: USGS PROF. PAPER 958, P. 8-10.