The Sigma Emma 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 MRDS details
Site Name
Primary: Sigma Emma
Commodity
Primary: Beryllium
Tertiary: Lithium
Tertiary: Uranium
Tertiary: Fluorine-Fluorite
Location
State: Utah
County: Juab
District: Spor Mountain
Land Status
Land ownership: BLM Administrative Area
Note: the land ownership field only identifies whether the area the mine is in is generally on public lands like Forest Service or BLM land, or if it is in an area that is generally private property. It does not definitively identify property status, nor does it indicate claim status or whether an area is open to prospecting. Always respect private property.
Holdings
Not available
Workings
Not available
Ownership
Owner Name: Brush-Wellman
Production
Not available
Deposit
Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Discovery Year: 1960
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 And 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
Age Young: Miocene
Name: Rhyolite
Role: Associated
Age Type: Associated Rock Unit
Age Young: Miocene
Name: Rhyolite
Role: Associated
Age Type: Host Rock Unit
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 PORPHYRITIC RHYOLITE SERVED AS AN IMPERMEABLE BARRIER FOR MINERALIZING FLUIDS AND IS NOT MUCH MINERALIZED.
References
Reference (Deposit): STAATZ. M.H. 1963. GEOL OF MIN DEP IN THOMAS RANGE: USGS BULL. 1142-M
Reference (Deposit): STAATZ, M.H. & GRIFFITTS, W.R. 1961, BE BEARING TUFF IN THOMAS RANGE: ECON GEOL V.56, NO. 5.
Reference (Deposit): STAATZ, M.H. & OSTERWALD, F.W. 1959. GEOL OF THOMAS RANGE FLUOR DISTRICT: USGS BULL. 1069.
Reference (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.
Reference (Deposit): DAVIS, L.J., 1979, B
Reference (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.
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