Utonia Mine

Site Name

Primary: Utonia Mine
Secondary: Utonia Claim

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Commodity

Primary: Manganese
Primary: Silver
Primary: Lead
Primary: Zinc
Secondary: Gold

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Location

State: Utah
County: Tooele
District: Erickson District District

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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.

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Holdings

Not available

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Workings

Not available

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Ownership

Not available

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Production

Not available

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Deposit

Record Type: Site
Operation Category: Occurrence
Operation Type: Unknown
Year First Production: 1899
Year Last Production: 1899
Discovery Year: 1895
Discovery Method: Ore-Mineral In Place
Years of Production:
Organization:
Significant: N
Deposit Size: S

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Physiography

Not available

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Mineral Deposit Model

Not available

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Orebody

Form: REPLACEMENT

Form: REPLACEMENT

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Structure

Type: R
Description: Sheeprock Thrust Fault Inferred To Lie About 2,000 Feet Beneath Death Canyon; Deep Creek-Tintic District Mineral Belt

Type: L
Description: Anticline Along Axis Of Death Canyon, Local Fracture Zones

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Alterations

Alteration Type: L
Alteration Text: Propylitic

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Rocks

Name: Latite
Role: Associated
Age Type: Associated Rock
Age Young: Oligocene

Name: Latite
Role: Associated
Age Type: Host Rock
Age Young: Neoproterozoic

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Analytical Data

Analytical Data: <5 PPB AU
Analytical Data: 19 PPM AG
Analytical Data: >3.0% ZN
Analytical Data: 145 PPM CU
Analytical Data: <500 PPM ZR. A SAMPLE FROM THE UNKNOWN ADIT, A GRAB SAMPLE FROM THE DUMP YIELDED THE FOLLOWING ANALYSIS: 3.99% PB
Analytical Data: <100 PPM BA, 5.0% FE
Analytical Data: 32 PPM AS
Analytical Data: 3.2 PPM SB
Analytical Data: 45 PPM CU
Analytical Data: 1.1% ZN
Analytical Data: <5% AG
Analytical Data: 9 PPB AU
Analytical Data: 1.88% PB
Analytical Data: A SAMPLE FROM THE DUMP OF THE EAST ADIT YIELDED THE FOLLOWING ANALYSIS
Analytical Data: 18 PPM AS
Analytical Data: 5.2 PPM SB
Analytical Data: <0.5% PPM U. BOTH SAMPLES CONTAINED SEVERAL PERCENT MN IN THE FORM OF RHODONITE.
Analytical Data: 7 PPM W
Analytical Data: 2.7 PPM SC
Analytical Data: <2 PPM MO
Analytical Data: 6.9% FE
Analytical Data: 13 PPM CO
Analytical Data: 410 PPM CD
Analytical Data: <100 PPM BA
Analytical Data: 3.1 PPM SC
Analytical Data: .5 PPM U
Analytical Data: 7 PPM W
Analytical Data: 3 PPM MO
Analytical Data: 10 PPM CO
Analytical Data: 64 PPM CD

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Materials

Ore: Rhodonite
Ore: Sphalerite
Ore: Rhodochrosite
Ore: Galena
Gangue: Quartz
Gangue: Calcite
Gangue: Chlorite

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Comments

Comment (Development): EARLY DEVELOPMENT BEGAN IN THE SPRING OF 1899 WITH PRODUCTION OF 3 OR 4 CARLOADS OF ORE BY AUGUST, 1899. THIS WORK CONTINUED THROUGH JANUARY, 1900. PROPERTY WAS UNDER A LEASE AGREEMENT IN 1906 TO STRONG AND VINCENT OF SALT LAKE CITY, HOWEVER NO DEVELOPMENT OCCURRED AND A MR. O'DONNELL OF SALT LAKE PLANNED TO CONDUCT DEVELOPMENT WORK. IN NOVEMBER OF 1913, A SMALL FORCE OF MEN CONDUCTED DEVELOPMENT WORK ON THE MINE (INFORMATION FROM THE SALT LAKE MINING REVIEW.)

Comment (Location): TOWNSHIP IS UNSURVEYED. LOCATION VERIFIED BY FIELD INVESTIGATION ; INFO FROM LAND.ST :(1977)

Comment (Production): 3 OR 4 CARLOADS OF ORE SAID TO HAVE BEEN SHIPPED BY AUGUST OF 1899, GOLD GRADES GIVEN AS DOLLARS PER TON

Comment (Geology): DATE ON SERICITE FROM BAR X MINE YIELDED AN AGE OF 16.3 +/- 0.7 M.Y. THIS AGE PROBABLY REPRESENTS THE AGE OF MN-PB-ZN-AG MINERALIZATION FOR THE AREA, INCLUDING THE UTONIA MINE MINERALIZATION. HOST ROCKS ARE MIDDLE PROTEROZOIC IN AGE, PRECAMBRIAN Y. QUARTZ MONZONITE DIKES REPORTEDLY ENCOUNTERED AT THE NEARBY BAR X MINE. SMALL PLUGS OF INTRUSIVE ROCKS OF INTERMEDIATE COMPOSITION, WHICH ARE HIGHLY ARGILLIZED AND PYRITIC, LIE APPROXIMATELY 2,000 FT SOUTH OF THE UTONIA MINE. HOST ROCKS NOT FOMRALLY NAMED

Comment (Deposit): Discovery Year: 1890'S

Comment (Deposit): DEPOSIT CONSISTS OF DISSEMINATED GRAINS OF GALENA, SPHALERITE, PYRITE, AND MANGANESE MINERALS REPLACING GREENISH ARGILLITE. REPLACEMENT LOCALLY RESULTED IN MASSIVE PODS OF ORE CONSISTING OF BLEBS OF GALENA AND SPHALERITE IN A RHODONITE MATRIX. INACCESSIBILITY OF WORKINGS PREVENTED DETERMINATION OF FORM OF DEPOSIT. MINERALIZING SOLUTIONS PRESUMABLY WERE INTRODUCED ALONG FRACTURES, HOWEVER NO MAJOR FAULTS WERE MAPPED NEAR THE DEPOSIT. CONTROLLING FRACTURES PROBABLY STRIKE NW. THIS DEPOSIT IS PROBABLY A VARIETY OF THE POLYMETALLIC VEIN AND REPLACEMENT DEPOSIT-TYPE (TINTIC DISTRICT-TYPE)

Comment (Workings): WORKINGS CONSIST OF 3 ADITS AND ONE PROSPECT PIT. ADITS ARE INACCESSIBLE DUE TO FLOODING AND CAVING. DUMPS DERIVED FROM ADITS ARE SMALL, INDICATING A TOTAL COMBINED LENGTH OF WORKINGS OF LESS THAN 700 FT. PROSPECT PIT IS APPROXIMATELY 10X15X15 FT.

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References

Reference (Deposit): CRITTENDEN, M.D., JR., 1951, MANGANESE DEPOSITS OF WESTERN UTAH, USGS BULLETIN 979-A, P. 44

Reference (Deposit): PARDEE, J.T., 1921, DEPOSITS OF MANGANESE IN MONTANA, UTAH, OREGON, AND WASHINGTON: U.S. GEOLOGICAL SURVEY BULLETIN 725-C

Reference (Deposit): ANNON., 1899, SALT LAKE MINING REVIEW, VOL 1, AUGUST 15, PAGE 12

Reference (Deposit): MORRIS H.T., AND KOPF, R.W., 1985, PRELIMINARY GEOLOGIC MAP OF THE INDIAN SPRINGS QUADRANGLE AND ADJACENT PART OF THE COYOTE SPRINGS QUADRANGLE, TOOELE AND JUAB COUNTIES, UTAH: UGMS (IN PROGRESS)

Reference (Production): ANNON, 1899, SALT LAKE MINING REVIEW, VOL 1, AUG. 15, PAGE 12

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