Colorado · Park County
Past Producer

Mary Lee Mine

Park County, Colorado, United States
BerylliumTungstenMolybdenumUraniumREELeadZincArsenicIronCopperTin
⌖ Show on mapUSGS source ↗
Description

Bob Beal And Roy Monett

Commodities
PrimaryBeryllium
SecondaryTungsten
TertiaryMolybdenum, Uranium, REE, Lead, Zinc, Arsenic, Iron, Copper, Tin
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
GangueBarite, Fluorite, Muscovite, Quartz, Siderite, Topaz
Geology
Host rockGneiss,Granite
Associated rockGranite · Redskin Granite;Boulder Creek Granodiorite
StructureTarryall Mountains, Front Range, Puma Hills, Badger Flats, Badger Flats Fault, Minor Faults, Round Mountain Syncline
Tectonic settingCentral Cordillera (Southern Rocky Mountains)
AlterationGreisenization
Economic & production
Development statusPast Producer
Discovery year1957
Identification
Deposit ID10013792
MRDS IDD010281
Alternate namesLittle Bear Mine, Little Bear No. 2 Mine
RegionNA
Data scoreB
Coordinates39.07583, -105.42891
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., HARRER, C.M., SALSBURY, M.H., KONSELMAN, A.S., SHANNON S.S., JR., 1966, RECONNAISSANCE OF BERYLLIUM-BEARING PEGMATITE DEPOSITS IN SIX WESTERN STATES: ARIZONA, COLORADO, NEW MEXICO, SOUTH DAKOTA, UTAH, AND WYOMING: USBM INFORMATION CIRCULAR 8298, P. 30