Mine detail: Duffields Deposit

Previously called 'Leyte, MS 20742Hughes Boss Shaft and Leyte Open PitClaims: Hughes Boss, MS 14464'

Location:	El Paso County, Colorado, United States, North America
Lat / long:	38.73834, -104.90917
dep_id:	10087849
mrds_id:	D010307
Commodity type:	metallic and nonmetallic
Major mineral:	Fluorine-Fluorite
Minor mineral:	Gold, Lead, Zinc, Silver
Operation type:	Unknown
Deposit type:	Vein
Production size:	Small ammount of material produced
Development status:	Past Producer
ore:	Fluorite, Galena, Sphalerite
gangue:	Barite, Quartz
alteration:	Wallrock Silicification
Reporter:	Schwochow, Stephen D.
hrock_unit:	Pikes Peak Granite
hrock_type:	Granite
arock_unit:	Pikes Peak Granite;Aplite Dike
arock_type:	Granite
Structure:	Front Range Uplift, Pikes Peak Batholith, Mt Rosa Intrusive Center, Ute Pass Fault, Manitou Park Half Graben
tectonic:	Central Cordillera (Southern Rocky Mtns)
Year first produced:	1910
yr_lst_prd:	1945
disc_yr:	1901
discr:	Thomas Hughes (Hughes Boss Claimant)
References:	Deposit:: 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. Deposit:: FINLAY, G.I., 1916, DESCRIPTION OF THE COLORADO SPRINGS QUADRANGLE: USGS FOLIO 203. Deposit:: STEVEN, T.A., 1949, GEOLOGY AND FLUORSPAR DEPOSITS OF THE ST. PETERS DOME DISTRICT, COLORADO: COLORADO SCI. SOC. PROC., V. 15, NO. 6, P. 259-284. Deposit:: PEARL, R.M., 1965, COLORADO GEM TRAILS AND MINERAL GUIDE: DENVER, SAGE BOOKS, P. 171-180. Deposit:: OVER, EDWIN, JR., 1929, SOME MINERAL LOCALITIES OF EL PASO COUNTY: ROCKS AND MINERALS, V. 4, NO. 4, P. 106-107. Production:: STEVEN, 1949