Mine detail: Boomer Mine

Previously called 'East BoomerOuthouse Lode, Mammoth Lode, Florman Shaft'

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Location

Lat / long: 39.07639, -105.44891

Resource(M)

Primary: Beryllium
Secondary: Silver, Uranium, Molybdenum, Tungsten
Tertiary: Lead, Zinc, Copper, Arsenic, Iron, Tin
Ore: Bertrandite, Beryl, Cassiterite, Chalcopyrite, Covellite, Euclase, Galena, Molybdenite, Pyrite, Silver, Sphalerite, Uraninite, Wolframite
Gangue: Fluorite, Muscovite, Quartz, Siderite, Topaz
Orebody form: CUPOLAS, PODS, IRREGULAR LENSES
Discovery year: 1895

Production

Operation type: Unknown
Production size: Small
Development status: Past Producer
First production started: 1895
Last production ended: 1965

Geology

Host rock:Idaho Springs Formation
Host type:Gneiss,Amphibolite,Pegmatite,Granite
Associated rock:Redskin Granite
Associated type:Granite
Structure:Tarryall Mountains, Front Range, Puma Hills, Badger Flats, Badger Flats Fault, Minor Faults (Especially Steeply-Dipping Ne- And Nw-Trending Faults), Round Mountain Syncline, Boomer Cupola, Boomer Vein
Tectonic:Central Cordillera (Southern Rocky Mountains)
Alteration processes:Greisenization

References

MRDSD010271
DEP10013786
Reference{Deposit:: 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.}{Deposit:: 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.}{Deposit:: 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.}{Deposit:: 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.}{Deposit:: SIEMS, P.L., 1963, BERYLLIUM: COLORADO SCHOOL OF MINES MINERAL INDUSTRIES BULLETIN, V. 6, NO. 3, 15 P.}{Deposit:: WORCESTER, P.G., 1919, MOLYBDENUM DEPOSITS OF COLORADO: CGS BULLETIN 14, P. 73-74.}{Deposit:: SHARP, W.N. AND HAWLEY, C.C., 1960, BERTRANDITE-BEARING GREISEN, A NEW BERYLLIUM ORE, IN THE LAKE GEORGE DISTRICT, COLORADO, IN SHORT PAPERS IN THE GEOLOGICAL SCIENCES: USGS PROFESSIONAL PAPER 400-B, P. B73-B74.}{Deposit:: HAWLEY, C.C., SHARP, W.N., GRIFFITTS, W.R.,1960, PRE-MINERALIZATION FAULTING IN THE LAKE GEORGE AREA, PARK COUNTY, COLORADO, IN, SHORT PAPERS IN THE GEOLOGICAL SCIENCES: USGS PROFESSIONAL PAPER 400-B, P. B71-B73}{Deposit:: GALLAGHER, G.L., 1976, URANIUM FAVORABILITY OF PRECAMBRIAN ROCKS IN THE BADGER FLATS-ELKHORN THRUST AREA, PARK AND TELLER COUNTIES, COLORADO: USERDA REPORT GJBX-55(76), 30 P.}{Deposit:: NELSON-MOORE, J.L., COLLINS, D.B. AND HORNBAKER, A.L., 1978, RADIOACTIVE MINERAL OCCURRENCES OF COLORADO AND BIBLIOGRAPHY: CGS BULLETIN 40, P. 365}{Production:: HAWLEY, C.C. (1969); SIEMS, P.L. (1963)}
ReporterCollins, Donna B.