Colorado · Douglas County
Past Producer

Lone Pine Feldspar Quarry

Douglas County, Colorado, United States
FeldsparNiobium (Columbium)ThoriumREE
⌖ Show on mapUSGS source ↗
Commodities
PrimaryFeldspar
TertiaryNiobium (Columbium), Thorium, REE
Commodity typeB
Deposit
Deposit sizeS
WorkingsSurface
Orebody formIRREGULAR
Materials
Ore mineralsMicrocline
GangueParisite, Pyrochlore, Thorite, Xenotime
Geology
Host rockGranite · Pikes Peak Granite;Pegmatite
Associated rockPegmatite,Granite · Pikes Peak Granite;Pegmatite
StructureFront Range Uplift, Pikes Peak Batholith, Rampart Range Uplift, Perry Park-Jarre Canyon Fault, Manitou Park Half Graben
Tectonic settingCentral Cordillera (Southern Rocky Mtns)
Economic & production
Development statusPast Producer
Identification
Deposit ID10013839
MRDS IDD010364
Alternate namesMs 20867, Claim: Lone Pine
RegionNA
Data scoreB
Coordinates39.15694, -105.05779
References
MEEVES, H.C., AND OTHERS, 1966, RECONNAISSANCE OF BERYLLIUM-BEARING PEGMATITE DEPOSITS IN SIX WESTERN STATES: USBM IC-8298, P. 24-25.BRYANT, BRUCE, AND OTHERS, 1981, GEOLOGIC MAP OF THE DENVER 1X2 QUADRANGLE, NORTH-CENTRAL COLORADO: USGS MAP I-1163.HEINRICH, E.W., 1957, PEGMATITE PROVINCES OF COLORADO: COLORADO SCHOOL MINES QUART., V. 52, NO. 4, P. 1-22.TRIMBLE, D.E., AND MACHETTE, M.N., 1979, GEOLOGIC MAP OF THE COLORADO SPRINGS-CASTLE ROCK AREA, FRONT RANGE URBAN CORRIDOR, COLORADO: USGS MAP I-857-F.COLO. DIV. MINES ANN. OPERATOR REPT.