Oversite Mine

Site Name

Primary: Oversite Mine

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Commodity

Primary: Fluorine-Fluorite
Secondary: Uranium
Secondary: Beryllium

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Location

State: Utah
County: Juab
District: Spor Mtn-Thomas Range

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Land Status

Land ownership: Private
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.

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Holdings

Not available

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Workings

Type: Underground

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Ownership

Owner Name: Frank Lowder
Home Office: Delta

Owner Name: Frank And Glen Lowder

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Production

Year: 1952
Description: Ap_Grade: ^82.3-89.8% Caf2, 2.2-4.2% Sio2

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Deposit

Record Type: Site
Operation Category: Past Producer
Deposit Type: Replacement
Operation Type: Unknown
Year First Production: 1949
Discovery Year: 1948
Discovery Method: Ore-Mineral In Place
Years of Production:
Organization:
Significant: N
Deposit Size: S

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Physiography

General Physiographic Area: Intermontane Plateaus
Physiographic Province: Basin And Range Province
Physiographic Section: Great Basin
Physiographic Detail: Thomas Mountains - Tintic Mountains

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Mineral Deposit Model

Not available

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Orebody

Form: PIPE-LIKE

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Structure

Type: R
Description: Basin & Range

Type: L
Description: Main Ore Body Is 65 Ft From Closest Fault And 150 Ft From Closest Intrusive Breccia Body.

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Alterations

Alteration Type: L
Alteration Text: Clay Alteration

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Rocks

Name: Rhyolite
Role: Associated
Age Type: Host Rock
Age Young: Late Silurian

Name: Rhyolite
Role: Associated
Age Type: Associated Rock
Age Young: Miocene

Name: Rhyolite
Role: Associated
Age Type: Host Rock Unit
Age Young: Late Silurian

Name: Rhyolite
Role: Associated
Age Type: Associated Rock Unit
Age Young: Miocene

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Analytical Data

Analytical Data: ORE PILE = .007% U3O8 ADIT = .003% U3O8, 83.5% CAF2
Analytical Data: 1964 ASSAY: SURFACE = .008% U3O8 MAIN ORE BODY = .006% U3O8, 62.1% CAF2

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Materials

Ore: Fluorite
Gangue: Bertrandite
Gangue: Carnotite

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Comments

Comment (Location): SECTION SUBDIVISIONS NW 1/4 SW 1/4 NE 1/4

Comment (Deposit): THE ORE PIPE DIVIDES INTO 2 SMALLER PIPES ABOUT 60 FT BELOW THE SURFACE. A CIRCULAR WINZE WAS SUNK TO A DEPTH OF 80 FT IN 1952. 3 SMALL CROSSCUTS WERE DRIVEN FROM THE WINZE

Comment (Workings): WORKINGS CONSIST OF SEVERAL SHALLOW PITS & ONE DEEPER PIT. (80 FT), AND A 261 FT ADIT

Comment (Geology): STRATA STRIKES N34E & DIPS 32 NW. ORE IS HIGHLY SILICIOUS & SHOWS WELL DEVELOPED BOX WORKS.

Comment (Production): IDLE SINCE 1952

Comment (Development): RECENT URANIUM EXPLOR. INDICATES A FAIR U3O8 CONTENT BUT IT OCCURRS IN COMPLEX STRUCTURE WITH F IONS WHICH MAKES IT ECONOMICALLY MARGINAL FOR EXTRACTION

Comment (Commodity): CHIEF IMPURITIES ARE MONTMORILLONITE, CREAM COLORED DOLOMITE & QUARTZ

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References

Reference (Analytical Data): SRC.REF: USGS PP 415

Reference (Deposit): BULLOCK, K.C., 1976, FLUORITE OCCURRENCES IN UTAH: UTAH GEOL. & MINERAL SURVEY BULL. 110.

Reference (Deposit): STAATZ, M.H., & OSTERWALD, F.W., 1959, GEOLOGY OF THE THOMAS RANGE FLUORSPAR DISTRICT, JUAB COUNTY: USGS BULL. 1069.

Reference (Deposit): STAATZ, M.H., AND CARR, W.J., 1964, GEOLOGY AND MINERAL DEPOSITS OF THE THOMAS & DUGWAY RANGES, JUAB-TOOELE CO., UT: USGS PP 415.

Reference (Deposit): 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.

Reference (Deposit): 5) LEEDOM, S.H., AND MITCHELL, T.P., 1978, PRELIMINARY STUDY OF FAVORABILITY FOR URANIUM RESOURCES IN JUAB, COUNTY, UTAH: BENDIX FIELD ENGINEERING CORP, DOE CONTRACTOR, GJBX-23 (78).

Reference (Deposit): 6) LINDSEY, D.A., GANOW, H., AND MOUNTJOY, W., 1973, HYDROTHERMAL ALTERATION ASSOCIATED WITH BERYLLIUM DEPOSITS AT SPOR MOUNTAIN, UTAH: USGS PP. 818-A, 20P.

Reference (Deposit): COCHRAN, K.L., 1952, FLUORSPAR RESOURCES OF CALIFORNIA, NEVADA, UTAH, IDAHO, AND COLORADO ADJACENT AND TRIBUTARY TO FACILITIES OF THE UNION PACIFIC RAILROAD COMPANY: UNION AND PACIFIC RAILROAD COMPANY, LOS ANGLES, CALIFORNIA, 78 P.

Reference (Deposit): 1951 DIREXPL US AEC

Reference (Deposit): 1959 RECON STAATZ, USGS BULL. 1069

Reference (Deposit): 11) SHAWE, D.R., 1972, RECONNAISSANCE GEOLOGY AND MINERAL POTENTIAL OF THOMAS, KEG, AND DESERT CALDERAS, CENTRAL JUAB CO.M UTAH: USGS PP. 800-B, PP. B67-B77.

Reference (Deposit): 12) STAATZ, M.H., AND BAUER, H.L., JR., 1951, A PRELIMINARY REPORT ON THE RADIOACTIVE FLUORITE DEPOSITS, THOMAS RANGE, JUAB COUNTY, UTAH: USGS-US AEC TEM-167-A, 11 P.

Reference (Deposit): 13) STAATZ, M.H., 1963, GEOLOGY OF THE BERYLLIUM DEPOSITS IN THE THOMAS RANGE JUAB COUNTY, UTAH: USGS BULL. 1142-M, 34 P.

Reference (Deposit): 1964 RECON STAATZ, USGS PP 415

Reference (Deposit): 7) LINDSEY, D.A., NAESER, C.W., & SHAWE, D.R., 1975, AGE OF VOLCANISM, AND MINERALIZATION IN THE THOMAS RANGE, KEG MTN., AND DESERT MTN., WESTERN UTAH: USGS JOURNAL OF RESEARCH, V. 3, NO. 5, P. 597-604.

Reference (Deposit): 8) LINDSEY, D.A., 1975, MINERALIZATION HALOS AND DIAGENESIS IN WATER-LAID TUFF OF THE THOMAS RANGE, UTAH: USGS PP. 818-B, 59P.

Reference (Deposit): 9) LINDSEY, D.A., 1977, EPITHERMAL BERYLLIUM DEPOSITS IN WATER-LAID TUFF, WESTERN UTAH: ECON. GEOL., V. 72, P. 219-232.

Reference (Deposit): 10) LINDSEY, D.A., 1979, PRELIMINARY REPORT ON TERTIARY VOLCANISM AND URANIUM MINERALIZATION IN THE THOMAS RANGE AND NORTHERN DRUM MOUNTAINS, JUAB COUNTY, UTAH: USGS OPEN FILE RPT. 79-1076, 101 P.

Reference (Deposit): 1979 GEOLMAP LINDSEY, D.A., USGS MAP-I-1176

Reference (Production): STAATZ, 1964, GEOLOGY AND MINERAL DEPOSITE OF THE THOMAS & DUGWAY RANGES: USGS PP 415

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