Commodities
PrimaryBeryllium
TertiaryTin, Molybdenum, Tungsten, Uranium, Lead, Zinc, Arsenic, Iron, Copper
Commodity typeM
Deposit
Deposit sizeS
WorkingsUnderground
Orebody formCUPOLAS, PODS, IRREGULAR LENSES
Ore controlGreisenized Rocks; Localized By Fissures, Contacts, Favorable Rock Units
Materials
Ore mineralsBertrandite, Beryl, Cassiterite, Chalcopyrite, Covellite, Euclase, Galena, Molybdenite, Pyrite, Sphalerite, Uraninite, Wolframite
GangueFluorite, Muscovite, Quartz, Siderite, Topaz
Geology
Host rockGneiss,Granite · Idaho Springs Formation
Associated rockGranite · Redskin Granite;Silver Plume Granite
StructureTarryall Mountains, Front Range, Puma Hills, Badger Flats, Badger Flats Fault, Minor Faults, Round Mountain Syncline, Boomer Cupola
Tectonic settingCentral Cordillerd (Southern Rocky Mountains)
AlterationGreisenization
Economic & production
Development statusPast Producer
Discovery year1955
Identification
Deposit ID10087840
MRDS IDD010278
Alternate namesJ & S No. 1, J & S No. 2, J & S No. 3
RegionNA
Data scoreB
Coordinates39.07889, -105.45169
References
HAWLEY, C.C., 1969, GEOLOGY AND BERYLLIUM DEPOSITS OF THE LAKE GEORGE (OR BADGER FLATS) BERYLLIUM AREA, PARK AND JEFFERSON COUNTIES, COLORADO: USGS PROFESSIONAL PAPER 608-A, 44 P.MEEVES, H.C., 1966, NONPEGMATITIC BERYLLIUM OCCURRENCES IN ARIZONA, COLORADO, NEW MEXICO, UTAH, AND FOUR ADJACENT STATES: USBM REPORT OF INVESTIGATIONS 6828, P. 25-34.HAWLEY, C.C. AND GRIFFITTS, W.R., 1968, DISTRIBUTION OF BERYLLIUM, TIN, AND TUNGSTEN IN THE LAKE GEORGE AREA, COLORADO: USGS CIRCULAR 597, 18 P.HAWLEY, C.C. AND WOBUS, R.A., 1977, GENERAL GEOLOGY AND PETROLOGY OF THE PRECAMBRIAN CRYSTALLINE ROCKS, PARK AND JEFFERSON COUNTIES, COLORADO: USGS PROFESSIONAL PAPER 608-B 77 P.SIEMS, P.L., 1963, BERYLLIUM: COLORADO SCHOOL OF MINES MINERAL INDUSTRIES BULLETIN, V. 6, NO. 3, 15 P.WORCESTER, P.G., 1919, MOLYBDENUM DEPOSITS OF COLORADO: CGS BULLETIN 14, P. 73-74.MEEVES, H.C., 1956