Description
F.B. Chesley, W.E. Black (Delta, Ut)
Commodities
PrimaryFluorine-Fluorite
SecondaryUranium, Beryllium
Commodity typeB
Deposit
Deposit typeReplacement
Deposit sizeS
Orebody formPIPE-LIKE-IRREGULAR & ELONG. IN NE DIRECTION
Ore controlAlong Pipes And Veins In Favorable Replacement Carbonates & In Brecciated Fault Zones
Materials
Ore mineralsFluorite
GangueBertrandite, Carnotite, Quartz
Geology
Host rockDolomite · Bell Hill Dolomite;Fluoride Dolomite
Associated rockRhyolite · Por. Rhyolitic Member Of Spor Mtn Formation;Umio Stratified Tuff Member Of Topaz Mtn. Rhyolite
StructureBasin & Range, Numerous Branching Faults That Are Difficult To Trace Unless They Contain Breccia
Tectonic settingSevier Orogenic Belt
AlterationClay Alteration
Economic & production
Development statusPast Producer
Production years1949 - 1956 , 1974 - PRESENT
First production1948
Discovery year1948
Identification
Deposit ID10041797
MRDS IDM057576
Alternate namesMiddle Pit Deposit
RegionNA
Data scoreB
Coordinates39.73911, -113.17832
References
SRC.REF: USGS PP 415BULLOCK, K.C., 1976, FLUORITE OCCURRENCES IN UTAH: UTAH GEOL. & MINERAL SURVEY BULL. 110.STAATZ, M.H., & OSTERWALD, F.W., 1959, GEOLOGY OF THE THOMAS RANGE FLUORSPAR DISTRICT, JUAB COUNTY: USGS BULL. 1069.STAATZ, M.H., AND CARR, W.J., 1964, GEOLOGY AND MINERAL DEPOSITS OF THE THOMAS & DUGWAY RANGES, JUAB-TOOELE CO., UT: USGS PP 415.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.1951 DIREXPL US AEC TEI-1361959 RECON STAATZ, USGS BULL. 10691964 RECON STAATZ, USGS PP 415COCHRAN, K.L., 1952, FLUORSPAR RESOURCES OF CALIF., NEV., UTAH, IDAHO, & COLORADO ADJACENT & TRIBUTARY TO FACILITIES OF THE UNION PACIFIC RR CO: UPRC, LOS ANGELES CALIF., 78 P1979 GEOLMAP LINDSEY, D.A., USGS MAP-I-1176STAATZ, 1964, GEOLOGY AND MINERAL DEPOSITS OF THE THOMAS & DUGWAY RANGES: USGS PP. 415BULLOCK, 1976 , P. 48