The Blue Chalk is a beryllium mine located in Juab county, Utah.
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
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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.
Blue Chalk MRDS details
Site Name
Primary: Blue Chalk
Commodity
Primary: Beryllium
Tertiary: Uranium
Tertiary: Fluorine-Fluorite
Tertiary: Lithium
Location
State: Utah
County: Juab
District: Spor Mountain Spor Mountain Spormountain
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
Type: Surface
Ownership
Owner Name: Brush-Wellman
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 And Range High Angle Faults Tilt Ore-Bearing Strata; Some May Have Been Conduits For Mineralizing 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: Uranophane
Ore: Bertrandite
Gangue: Calcite
Gangue: Clay
Unknown: Fluorite
Comments
Comment (Deposit): ORE DEPOSIT CROPS OUT AT SURFACE AND DIPS ABOUT 18 DEGREES SOUTHWEST BENEATH RHYOLITE CAP ROCK; AT 200 FT. DOWN DIP FROM OUTCROP TOP OF ORE IS ABOUT 50 FT. BELOW SURFACE. ORE DEPOSIT RANGES FROM 14-24 FEET THICK.
Comment (Workings): DIMENSIONS ESTIMATED VISUALLY WHEN VISITED BY LINDSEY IN 1986.
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.
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