Mine detail: Sigma Emma

Previously called ''

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Location

Lat / long:

39.71911, -113.2211

Resource(B)

Primary:	Beryllium
Tertiary:	Uranium, Fluorine-Fluorite, Lithium
Ore:	Bertrandite, Uranophane
Gangue:	Calcite, Clay
Orebody form:	TABULAR
Other material:	Fluorite
Discovery year:	1960

Production

Operation type:	Unknown
Production size:	Large
Development status:	Past Producer

Geology

Host rock:	Beryllium Tuff Member Of Spor Mountain Formation
Host type:	Volcanic Rock (Aphanitic),Tuff,Volcanic Breccia (Agglomerate)
Associated rock:	Porphyritic Rhyolite Member Of Spor Mountain Formation
Associated type:	Rhyolite
Structure:	Tintic-Deep Creek Mineral Belt., Basin And Range High Angle Faults Tilt Ore -Bearing Strata; Some May Have Been Conduits For Fluids.
Tectonic:	Extensional Basin And Range Faulting; Accompanied By Rhyolite-Basalt Volcanism.
Alteration processes:	Argillic: Smectite, Sericite, K-Feldspar.

References

MRDS	RE00012
DEP	10055077
Reference	{Deposit:: STAATZ. M.H. 1963. GEOL OF MIN DEP IN THOMAS RANGE: USGS BULL. 1142-M}{Deposit:: STAATZ, M.H. & GRIFFITTS, W.R. 1961, BE BEARING TUFF IN THOMAS RANGE: ECON GEOL V.56, NO. 5.}{Deposit:: STAATZ, M.H. & OSTERWALD, F.W. 1959. GEOL OF THOMAS RANGE FLUOR DISTRICT: USGS BULL. 1069.}{Deposit:: LINDSEY, D.A. GANOW, H., AND MOUNTJOY, W. 1973. HYDROTHERMAL ALTERATION ASSOCIATED WITH BERYLLIUM DEPOSITS AT SPOR MOUNTAIN, UTAH: USGS PROF. PAPER 818-A 20P.}{Deposit:: DAVIS, L.J., 1979, B}{Deposit:: ERYLLIUM AND URANIUM MINERALIZATION IN THE SPOR MOUNTAIN AREA, JUAB COUNTY, UTAH: IN NEWMAN, G.W., AND GOODE, H.D., EDS., 1979, BASIN AND RANGE SYMPOSIUM AND GREAT BASIN FIELD CONFERENCE, ROCKY MOUNTAIN ASSOCIATION OF GEOLOGISTS AND UTAH GEOLOGICAL ASSOCIATION, PP.397-403.}
Reporter	Moyer, Lorre A. (Lindsey, David A.)