Monarch Mines

The Monarch Mines is a silver and lead mine located in Tooele county, Utah at an elevation of 8,399 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

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.

Site Name

Primary: Monarch Mines

Commodity

Primary: Silver
Primary: Lead
Secondary: Gold

Location

State: Utah
County: Tooele
District: Ophir District; Lion Hill Area

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.

Holdings

Not available

Workings

Type: Underground

Ownership

Owner Name: F And S Co., Inc.

Production

Not available

Deposit

Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Year First Production: 1916
Year Last Production: 1936
Discovery Method: Ore-Mineral In Place
Years of Production:
Organization:
Significant: N
Deposit Size: S

Physiography

General Physiographic Area: Intermontane Plateaus
Physiographic Province: Basin And Range Province
Physiographic Section: Great Basin
Physiographic Detail: Uinta Extension

Mineral Deposit Model

Not available

Orebody

Form: IRREGULAR

Form: IRREGULAR

Form: IRREGULAR

Form: IRREGULAR

Structure

Type: R
Description: Basin And Range

Type: L
Description: Fissures, Fractures And Golds

Alterations

Alteration Type: L
Alteration Text: Dolomitization And Silicification

Rocks

Name: Diorite
Role: Associated
Age Type: Associated Rock
Age Young: Pliocene

Name: Diorite
Role: Associated
Age Type: Associated Rock Unit
Age Young: Pliocene

Name: Diorite
Role: Associated
Age Type: Host Rock
Age Young: Mississippian

Analytical Data

Analytical Data: PB 12 PERCENT
Analytical Data: AU $8/TON
Analytical Data: AG 130 OZ/TON

Materials

Ore: Plumbojarosite
Ore: Gold
Gangue: Talc
Gangue: Barite
Gangue: Gypsum
Gangue: Sericite
Gangue: Fluorite
Gangue: Chlorite
Gangue: Calcite

Comments

Comment (Location): INFO FROM LAND.ST :(1977)

Comment (Production): PRODUCTION FIGURES ARE NOT AVAILABLE.

Comment (Deposit): ORE ZONES ARE LOCALIZED IN FISSURES WITH QUARTZ FILLINGS, IN DEFORMED AND HIGHLY ALTERED WALLROCKS; ORE IS EXTREMELY OXIDIZED; ORE BODY DIPS DUE NE

Comment (Workings): ADITS AND DRIFTS TOTALLING 2,000 FT.; WORKINGS ARE GENERALLY CAVED AND INACCESSIBLE;

Comment (Deposit): MINERALIZED ZONE LIES JUST BELOW THE LONG TRAIL SHALE MEMBER, IN THE LOWER PART OF THE 'GREAT BLUE' LIMESTONES, ON THE EASTERN FLANK OF THE OPHIR ANTICLINE. THE ORE DEPOSITS OCCURS IN OY CLOSELY ASSOCIATED WITH JASPEROID. THE JASPEROID LIES IMMEDIATELY BENEATH A SILL OF 'BIRD EYE PORPHYRY: THE ORE FOLLOWED VERY IRREGULAR, GENERALLY NORTH-EASTERLY FISSURES IN THE JASPEROID. THE ORE IS PRACTICALLY ALL OXIDIZED. ; INFO.SRC : 1 PUB LIT; 3 FIELD OBSERV

Comment (Geology): HOSTROCKS ARE HIGHLY DEFORMED AND ALTERED. LIMESTONES ARE DARK GRAY TO BLACK, DOLOMITIC AND SILICIFIED. SHALES AREGREENISH GRAY TO BLACK, PULVERIZED, CARBONACEOUS, KAOLIMITIC, SERICITIC AND SILICEOUS. EFFECTS OF LIMONITIZATION ARE COMMON ON HOSTROCKS. VEINS OF CALCITE AND QUARTZ HAVE IMPREGNATED THE WALLROCKS.

References

Reference (Deposit): BISSELL, H.J., ET. AL., 1959, GUIDEBOOK TO THE GEOLOGY OF UTAH, NO. 14, UT. GEOL. SOC.: U.G.M.S. BULL. 14, 262P.

Reference (Deposit): GILLULY, J., 1932, GEOLOGY AND ORE DEPOSITS OF THE STOCKTON AND FAIRFIELD QUADRANGLES: U.S.G.S. PROF. PA. 173, 167P.

Reference (Deposit): BUTLER, B.S., ET. AL., 1920, THE ORE DEPOSITS OF UTAH: U.S.G.S. PROF. PA. 111, 672P.

Reference (Deposit): SPURR, J.E., 1895, ECONOMIC GEOLOGY OF THE MERCUR MINING DISTRICT, UTAH: U.S.G.S. 16TH. ANN. REPT., PT. 2, 454P.

Reference (Production): GILLULY, J., 1932, P. 140-141

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