Mine detail: Lost Sheep Mine

Previously called 'Purple Pit'

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Location

Lat / long: 39.73327, -113.23415

Resource(B)

Primary: Fluorine-Fluorite
Secondary: Uranium, Beryllium
Gangue: Bertrandite, Chert, Clay
Orebody form: PIPE-LIKE-CRESCENT SHAPED/IRREG. OUTLINE
Discovery year: 1948

Production

Operation type: Unknown
Deposit type: Replacement
Production size: Small
Development status: Past Producer
First production started: 1948

Geology

Host rock:Lost Sheep Dolomite;Harrisite Dolomite;Bell Hill Dolomite
Host type:Dolomite,Chert
Associated rock:Rhyolite Plug
Associated type:Volcanic Breccia (Agglomerate),Rhyolite
Structure:Basin & Range, Numerous Branching Faults. One Normal Fault Crops Out On W. Side Of Hill, About 600 Ft W. Of Purple Pit
Tectonic:Sevier Orogenic Belt
Alteration processes:Clay Alteration, Silica

References

MRDSW006951
DEP10069422
Reference{Analytical Data:: SRC.REF: USGS PP 415}{Deposit:: BULLOCK, K.C., 1976, FLUORITE OCCURRENCES IN UTAH: UTAH GEOL. & MINERAL SURVEY BULL. 110.}{Deposit:: STAATZ, M.H., & OSTERWALD, F.W., 1959, GEOLOGY OF THE THOMAS RANGE FLUORSPAR DISTRICT, JUAB COUNTY: USGS BULL. 1069.}{Deposit:: STAATZ, M.H., AND CARR, W.J., 1964, GEOLOGY AND MINERAL DEPOSITS OF THE THOMAS & DUGWAY RANGES, JUAB-TOOELE CO., UT: USGS PP 415.}{Deposit:: STAATZ, M.H., AND WILMARTH, V.R., & BAUER, H.L., JR., 1951, RADIOACTIVE FLUORITE IN THE THOMAS RANGE, JUAB CO., UT: USGS TEI #136, 88 P.}{Deposit:: 5) LEEDOM, S.H., AND MITCHELL, T.P., 1978, PRELIMINARY STUDY OF FAVORABILITY FOR URANIUM RESOURCES IN JUAB, COUNTY, UTAH: BENDIX FIELD ENGINEERING CORP, DOE CONTRACTOR, GJBX-23 (78).}{Deposit:: 6) LINDSEY, D.A., GANOW, H., AND MOUNTJOY, W., 1973, HYDROTHERMAL ALTERATION ASSOCIATED WITH BERYLLIUM DEPOSITS AT SPOR MOUNTAIN, UTAH: USGS PP. 818-A, 20 P.}{Deposit:: 7) LINDSEY, D.A., NAESER, C.W., & SHAWE, D.R., 1975, AGE OF VOLCANISM, AND MINERALIZATION IN THE THOMAS RANGE, KEG MTN., AND DESERT MTN., WESTERN UTAH: USGS JOURNAL OF RESEARCH, V. 3, NO. 5, P. 597-604.}{Deposit:: 8) LINDSEY, D.A., 1975, MINERALIZATION HALOS AND DIAGENESIS IN WATER-LAID TUFF OF THE THOMAS RANGE, UTAH: USGS PP. 818-B, 59 P.}{Deposit:: 9) LINDSEY, D.A., 1977, EPITHERMAL BERYLLIUM DEPOSITS IN WATER-LAID TUFF, WESTERN UTAH: ECON. GEOL., V. 72, P. 219-232.}{Deposit:: 10) LINDSEY, D.A., 1979, PRELIMINARY REPORT ON TERTIARY VOLCANISM AND URANIUM MINERALIZATION IN THE THOMAS RANGE AND NORTHERN DRUM MOUNTAINS, JUAB COUNTY, UTAH: USGS OPEN FILE RPT. 79-1076, 101 P.}{Deposit:: 11) SHAWE, D.R., 1972, RECONNAISSANCE GEOLOGY AND MINERAL POTENTIAL OF THOMAS, KEG, AND DESERT CALDERAS, CENTRAL JUAB CO., UTAH: USGS PP 800-B, PP. B67-B77.}{Deposit:: 12) STAATZ, M.H., AND BAUER, H.L., JR., 1951, A PRELIMINARY REPORT ON THE RADIOACTIVE FLUORITE DEPOSITS, THOMAS RANGE, JUAB COUNTY, UTAH: USGS-US AEC TEM-167-A, 11 P.}{Deposit:: 13) STAATZ, M.H., 1963, GEOLOGY OF THE BERYLLIUM DEPOSITS IN THE THOMAS RANGE JUAB COUNTY, UTAH: USGS BULL. 1142-M, 34 P.}{Deposit:: 1951 DIREXPL US AEC TEI-136}{Deposit:: COCHRAN, K.L., 1952, FLUORSPAR RESOURCES OF CALIF., NEV., UTAH, IDAHO, & COLORADO ADJACENT & TRIBUTARY TO FACILITIES OF THE UNION PACIFIC RR CO: UPRC, LOS ANGLES CALIF., 78 P.}{Deposit:: 1959 RECON STAATZ, USGS BULL. 1069}{Deposit:: 1964 RECON STAATZ, USGS PP 415}{Deposit:: 1979 GEOLMAP LINDSEY, D.A., USGS MAP-I-1176}{Production:: STAATZ, 1964, GEOLOGY AND MINERAL DEPOSITE OF THE THOMAS & DUGWAY RANGES, JUAB & TOOELE: USGS PP 514}
ReporterSchruben, Paul G., Everts, Mike L.