Lost Sheep Mine

Site Name

Primary: Lost Sheep Mine
Secondary: Purple Pit

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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: Surface

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Ownership

Owner Name: Fair Deal Mining Co.
Years: 1980 -

Owner Name: E. J. Hamblin

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Production

Year: 1975
Time Period: 1948-1975
Material type: ORE
Description: Cp_Grade: ^78-95% Caf2, 2.6% Sio2

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Deposit

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

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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-CRESCENT SHAPED/IRREG. OUTLINE

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Structure

Type: R
Description: Basin & Range

Type: L
Description: Numerous Branching Faults. One Normal Fault Crops Out On W. Side Of Hill, About 600 Ft W. Of Purple Pit

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Alterations

Alteration Type: L
Alteration Text: Clay Alteration, Silica

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Rocks

Name: Volcanic Breccia (Agglomerate)
Role: Associated
Age Type: Host Rock
Age Young: Late Silurian

Name: Volcanic Breccia (Agglomerate)
Role: Associated
Age Type: Associated Rock Unit
Age Young: Pliocene

Name: Volcanic Breccia (Agglomerate)
Role: Associated
Age Type: Associated Rock
Age Young: Miocene

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Analytical Data

Analytical Data: ADIT = .009% U3O8, 82.5% CAF2
Analytical Data: S. ORE BODY, SURFACE = .014% U3O8, 66.7% CAF2
Analytical Data: VEIN 25 FT E. OF MAIN ORE BODY = .033% U3O8, .031% U3O8
Analytical Data: MAIN ORE BODY, OPEN CUT = .020% U3O8, 82.7% CAF2, .009% U3O8, 88.0% CAF2, .011% U3O8, .016% U3O8, 88.5% CAF2, .014% U3O8, .029% U3O8, 78.6% CAF2, .016% U3O8, .021% U3O8, 84.7% CAF2
Analytical Data: 1964 ASSAYS: S. ORE BODY, OPEN CUT = .011% U3O8

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Materials

Gangue: Bertrandite
Gangue: Clay
Gangue: Chert

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Comments

Comment (Reserve-Resource): ACCORDING TO (1971) UNPUBLISHED INFORMATION BY R. G. WORL (USGS) THE SPOR MOUNTAIN DISTRICT RESERVES ARE 328,000 MET. TONS OF 40% CAF2 ORE AND LARGE, LOW GRADE BE AND U DEPOSITS

Comment (Workings): THE PIPES HAVE BEEN DEVELOPED BY OPEN CUTS, AN INCLINE SHAFT, A VERTICAL SHAFT, ADITS, CROSSCUTS 4 RAISES. CROSSCUTS DEVELOPED ON 150, 250, 325, & 400 FT LEVELS

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

Comment (Production): ITEM #10 IS REPORTED BY E.J. HAMBLIN ORALLY TO ME ON APRIL 14, 1980. E.J. HAMBLIN IS THE PRESENT OPERATOR.

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 (Deposit): 2 PIPES CROP OUT ON THE PROPERTY. THE MOST PRODUCTIVE IS CALLED THE PURPLE PIT, & THE SMALLER PIPE LIES 700 FT TO THE SOUTH AND IS CALLED THE BADGER HOLE PIT DEPOSIT.

Comment (Geology): THE PURPLE PIT PIPE EXTENDS OVER 400 FT DEEP THROUGH SIL. LOST SHEEP, HARRISITE & BELL HILL DOLOMITES. STRATA NEAR PIPE STRIKE N40-45E & DIP 37-42 NW.

Comment (Deposit): THE NORMAL FAULT WEST OF THE PURPLE PIT STRIKES N55E & DIPS 38 SE, AND PROJECTS TO A POINT ABOUT 400 FT BELOW THE ORIGINAL SURFACE OF THE PURPLE PIT. MOVEMENT ALONG THIS FAULT HAS PLACED BELL HILL DOLOMITE IN THE HANGING WALL AGAINST THE TOP OF THE SWAN PEAK QUARTZITE IN THE FOOTWALL. THUS, THE PURPLE PIT PIPE IS NOT EXPECTED TO PROJECT BELOW 400 FT LEVEL ; INFO.SRC : 3 FIELD OBSERV

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

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References

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): 1951 DIREXPL US AEC TEI-136

Reference (Production): STAATZ, 1964, GEOLOGY AND MINERAL DEPOSITE OF THE THOMAS & DUGWAY RANGES, JUAB & TOOELE: USGS PP 514

Reference (Deposit): COCHRAN, K.L., 1952, FLUORSPAR RESOURCES OF CALIF., NEV., UTAH, IDAHO, & COLORADO ADJACENT & TRIBUTARY TO FACILITIES OF THE UNION PACIFIC RR CO: UPRC, LOS ANGLES CALIF., 78 P.

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

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

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

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, 20 P.

Reference (Analytical Data): SRC.REF: 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, 59 P.

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): 11) SHAWE, D.R., 1972, RECONNAISSANCE GEOLOGY AND MINERAL POTENTIAL OF THOMAS, KEG, AND DESERT CALDERAS, CENTRAL JUAB CO., 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.

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