Mine detail: Last Chance Mine

Previously called 'Silver WhiteMaybe, Witherow Lease'

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Location

Lat / long: 46.87846, -116.58183

Resource(B)

Primary: Mica
Secondary: Feldspar, Beryllium
Tertiary: Uranium
Ore: Beryl
Gangue: Feldspar, Garnet, Graphite, Lithiophilite, Quartz, Tourmaline, Vivianite
Orebody form: TABULAR, PIPELIKE, SEAMS
Discovery year: 1888

Production

Operation type: Unknown
Production size: Small
Development status: Past Producer
First production started: 1888

Geology

Host rock:Prichard-Burke Form.-Muscovite-Biotite Schists
Host type:Schist,Pegmatite
Associated rock:Pegmatite
Associated type:Pegmatite
Structure:Steeply Dipping W Limb Of Anticline Of Great Width, Cleavage Planes Of Schists Strike N 55 Deg W. One Pegmatite Strikes N, Dips 77-83 Deg E, Parallel To Foliation

References

MRDSW015894
DEP10072067
Reference{Deposit:: ANDERSON, A. L., 1925, MICA DEPOSITS OF LATAH CO., IDAHO: IDAHO BUREAU OF MINES AND GEOL. PAMPHLET 14, 15 P.}{Deposit:: STOLL, W. C., 1950, MICA AND BERYL PEGMATITES IN IDAHO AND MONTANA: USGS PROF. PAPER 229, 64 P.}{Deposit:: HUBBARD, C. R., 1957, MINERAL RESOURCES OF LATAH COUNTY: IDAHO BUREAU OF MINES AND GEOLOGY COUNTY REPT. 2, 29 P.}{Deposit:: WEIS, P. L., ARMSTRONG, F. C., AND ROSENBLUM, S., 1958, RECONNAISSANCE FOR RADIOACTIVE MINERALS IN WASHINGTON, IDAHO, AND WESTERN MONTANA, 1952-1955: USGS BULL. 1074-B, 48 P.}{Deposit:: 5) MINOBRAS (PUB.), 1975, IDAHO INDUSTRIAL MINERALS, P. 44.}{Deposit:: 6) PATTEE, E. C., AND OTHERS, 1968, BERYLLIUM RESOURCES OF IDAHO, WASHINGTON, MONTANA, AND OREGON: US BUR MINES REPT. INV. 7148, P. 40-42.}{Deposit:: 1925 RECON IDAHO BUREAU OF MINES AND GEOLOGY PAMPHLET 14}{Deposit:: 1943 RECON W. C. STOLL, PROF. PAPER 229}{Deposit:: 1944 DIREXPL US BUR MINES, REPT. INV. 3898}{Deposit:: 1957 OTHER IDAHO BUREAU OF MINES AND GEOLOGY CO. REPT. 2}{Deposit:: 1958 RECON P. L. WEIS AND OTHERS, BULL. 1074-B}{Deposit:: 1958 RECON US BUR MINES, REPT. INV. 7148}{Production:: STOLL, W. C., 1950, USGS PROF. PAPER 229, 64 P. { LESURE, F. G., 1964, IDAHO BUREAU OF MINES AND GEOLOGY SPEC. PAPER 1, P. 131. { PATTEE, E. C., AND OTHERS, 1968, US BUR MINES, P. 25.}
ReporterMiller, Pat J.