Commodities
PrimaryFeldspar, Mica, Beryllium
TertiaryUranium, Bismuth, Niobium (Columbium), REE, Tin, Tantalum
Commodity typeB
Deposit
Deposit sizeS
WorkingsSurface/Underground
Orebody formTABULAR
Materials
Ore mineralsBeryl, Bismuthinite, Bismutite, Cassiterite, Columbite, Microcline, Monazite, Muscovite
GangueAlbite, Quartz, Tourmaline
Other materialsUraninite
Geology
Host rockDiorite · Gneissic Quartz Monzonite And Granodiorite;Biotite Gneiss
Associated rockDiorite,Pegmatite · Gneissis Quartz Monzonite And Granodiorite;Coarse-Grained Pegmatite
StructureFront Range Uplift, Denver Basin, Floyd Hill Fault Zone
Tectonic settingCentral Cordillera (Southern Rocky Mtns)
Economic & production
Development statusPast Producer
First production1884
Last production1935
Discovery year1884
Identification
Deposit ID10013744
MRDS IDD010204
Alternate namesSweitzer Lode
RegionNA
Data scoreB
Coordinates39.56471, -105.21502
References
BRYANT, BRUCE, AND OTHERS, 1973, GEOLOGIC MAP OF THE INDIAN HILLS QUADRANGLE, JEFFERSON COUNTY, COLORADO: USGS MAP GQ-1073HANLEY, J.B., AND OTHERS, 1950, PEGMATITE INVESTIGATIONS IN COLORADO, WYOMING, AND UTAH, 1942-44: USGS PROF. PAPER 227, P. 82-84MEEVES, H.C., AND OTHERS, 1966, RECONNAISSANCE OF BERYLLIUM-BEARING PEGMATITE DEPOSITS IN SIX WESTERN STATES: USBM IC-8298, P. 27.