Commodities
PrimaryMica
TertiaryBeryllium, Niobium (Columbium)
Commodity typeB
Deposit
Deposit sizeS
Orebody formIRREGULAR
Materials
Ore mineralsBeryl, Muscovite
GangueAlbite, Apatite, Columbite, Garnet, Microcline
Geology
Host rockMica Schist · Metasedimentary Rocks-Mica Schist;Pegmatite
Associated rockTonalite,Pegmatite · Pegmatite;Tonalite (Quartz Diorite)
StructureFront Range Uplift, Thompson Canyon Fault, Mt Olympus Batholith, Ne-Trending Folds
Tectonic settingCentral Cordillera (Southern Rocky Mtns)
Economic & production
Development statusPast Producer
First production1900
Discovery year1900
Identification
Deposit ID10013856
MRDS IDD010385
Alternate namesClaim: Crystal Silica Placer
RegionNA
Data scoreB
Coordinates40.5347, -105.43615
References
THURSTON, W.R., 1955, PEGMATITES OF THE CRYSTAL MOUNTAIN DISTRICT, LARIMER COUNTY, COLORADO: USGS BULL. 1011, 185 P., 13 PLS.HANLEY, J.B., AND OTHERS, 1950, PEGMATITE INVESTIGATIONS IN COLORADO, WYOMING, AND UTAH, 1942-1944: USGS PROF. PAPER 227, P. 93-96.