The Sigma Emma Mine is a beryllium mine located in Juab county, Utah at an elevation of 4,800 feet.
About the MRDS Data:
All mine locations were obtained from the USGS Mineral Resources Data System. The locations and other information in this database have not been verified for accuracy. It should be assumed that all mines are on private property.
Mine Info
Elevation: 4,800 Feet (1,463 Meters)
Commodity: Beryllium
Lat, Long: 39.71917, -113.22028
Map: View on Google Maps
Satelite View
MRDS mine locations are often very general, and in some cases are incorrect. Some mine remains have been covered or removed by modern industrial activity or by development of things like housing. The satellite view offers a quick glimpse as to whether the MRDS location corresponds to visible mine remains.
Sigma Emma Mine MRDS details
Site Name
Primary: Sigma Emma Mine
Commodity
Primary: Beryllium
Tertiary: Uranium
Tertiary: Fluorine-Fluorite
Tertiary: Lithium
Location
State: Utah
County: Juab
District: Spor Mountain
Land Status
Not available
Holdings
Not available
Workings
Not available
Ownership
Owner Name: Brush-Wellman Inc.
Production
Not available
Deposit
Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Discovery Year: 1960
Discovery Method: Ore-Mineral In Place
Years of Production:
Organization:
Significant: N
Deposit Size: L
Physiography
General Physiographic Area: Intermontane Plateaus
Physiographic Province: Basin And Range Province
Physiographic Section: Great Basin
Physiographic Detail: Thomas Mountains - Tintic Mountains
Mineral Deposit Model
Not available
Orebody
Form: TABULAR
Structure
Type: R
Description: Tintic--Deep Creek Mineral Belt
Type: L
Description: Basin Range High Angle, Faults Tilt Ore-Bearing Strata; Some May Have Been Conduits For Fluids
Alterations
Alteration Type: L
Alteration Text: Argillic: Smectite, Sericite, K-Feldspar
Rocks
Name: Rhyolite
Role: Associated
Age Type: Host Rock Unit
Age Young: Miocene
Name: Rhyolite
Role: Associated
Age Type: Associated Rock Unit
Age Young: Miocene
Name: Rhyolite
Role: Associated
Age Type: Host Rock
Age Young: Miocene
Analytical Data
Not available
Materials
Ore: Bertrandite
Ore: Uranophane
Gangue: Clay
Gangue: Calcite
Unknown: Fluorite
Comments
Comment (Geology): THE BERYLLIUM TUFF MEMBER HOSTS ALL ORE ZONES; THE PROPHYRITIC RHYOLITE SERVED AS AN IMPERMEABLE BARRIER FOR MINERALIZING FLUIDS AND IS NOT MUCH MINERALIZED. ; MAJOR.UNITS: BERYLLIUM TUFF MEMBER OF SPOR MOUNTAIN FORMATION, AGE: MIO 21 MA; PORPHYRITIC RHYOLITE MEMBER OF SPOR MOUNTAIN FORMATION (MIO)
References
Reference (Deposit): STAATZ, M.H., 1963, GEOLOGY OF MINERAL DEPOSITS IN THOMAS RANGE: USGS BULL. 1142-M.
Reference (Deposit): STAATZ, M.H. AND GRIFFITTS, W.R., 1961, BE BEARING TUFF IN THOMAS RANGE: ECONOMIC GEOLOGY V. 56, NO. 5.
Reference (Deposit): STAATZ, M.H., & OSTERWALD, F.W., 1959, GEOLOGY OF THOMAS RANGE FLUOR DISTRICT: USGS BULL. 1069.
Reference (Deposit): LINDSEY, D.A., GANON, H., AND MOUNTJOY, W., 1973, HYDROTHERMAL ALTERATION ASSOCIATED WITH BERYLLIUM DEPOSITS AT SPOR MOUNTAN, UTAH: U.S.G.S. PROFESSIONAL PAPER 818-A, 20 P.
Reference (Deposit): DAVIS, L.J., 1979, BERYLLIUM 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, P. 397-403.
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