Gemini Mine

The Gemini Mine is a lead, silver, and zinc mine located in Juab county, Utah at an elevation of 6,490 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: Gemini Mine

Commodity

Primary: Lead
Primary: Silver
Primary: Zinc
Secondary: Gold
Secondary: Copper

Location

State: Utah
County: Juab
District: Tintic District

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: Chief Consolidated Mining Co. - Controlling Interest?
Home Office: New York, Ny.

Production

Not available

Deposit

Record Type: Site
Operation Category: Past Producer
Deposit Type: Replacement
Operation Type: Unknown
Discovery Year: 1875
Discovery Method: Ore-Mineral In Place
Years of Production:
Organization:
Significant: N
Deposit Size: M

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: IRREGULAR

Form: IRREGULAR

Structure

Type: R
Description: Northerly

Type: L
Description: Cross Fractures

Alterations

Alteration Type: L
Alteration Text: Silicfication

Rocks

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

Name: Plutonic Rock
Role: Associated
Age Type: Host Rock
Age Young: Late Ordovician

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

Name: Plutonic Rock
Role: Associated
Age Type: Associated Rock Unit
Age Young: Oligocene

Analytical Data

Analytical Data: ALL ORE TO 1912 10% PB, 40 OZ AG AVERAGE

Materials

Ore: Sphalerite
Ore: Cerargyrite
Ore: Galena
Ore: Anglesite
Gangue: Limonite

Comments

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

Comment (Commodity): 25000 TONS/YR TO 1912, SMALLER THEREAFTER

Comment (Deposit): FOUR SEPARATE TRENDS. NATIVE SILVER NOT UNCOMMON

Comment (Development): WATER PROBLEMS CAUSED CLOSURE

Comment (Workings): DATA FROM LINDGREN ET SE, 1919; DEEPER MINING FROM CHIEF OF CONSOLIDATED. SHAFT, WINZE TO 1900 LEVEL, SHAFT TO 1650

Comment (Geology): OXIDATION TO WATER TABLE AT 1650 FT. N50A-RHYOLITE DIKES

Comment (Deposit): DESCRIBED BY POOLE BROS. (1898) AS GOLD (FREE AND REFRACTORY) AND SILVER PROPERTY EMPLOYING 10 MEN ; INFO.SRC : 1 PUB LIT

Comment (Deposit): Discovery Year: 1870S

References

Reference (Deposit): LINDGREN, W., AND LOUGHLIN, G.F., 1919, U.S. GEOLOGICAL SURVEY PROFESSIONAL PAPER 107, PLATE XXX 11, PAGES 186-7

Reference (Deposit): MORRIS, H.T., 1968, ORE DEPOSITS OF MAIN TINTIC MI(ING DISTRICT, UTAH IN RIDGE, J.D. GRATON - SALES VOLUME AIME NEW YORK, 1043-1073.

Reference (Deposit): MORRIS, H.T., AND LOVERING, T.S., 1979, GENERAL GEOLOGY AND MINES OF THE EAST TINTIC MINING DISTRICT, UTAH AND JUAB COUNTIES, UTAH: U.S. GEOLOGICAL SURVEY PROFESSIONAL PAPER 1024, 194 PP.

Reference (Deposit): COOK, D.R., ED., 1957, GEOLOGY OF THE EAST TINTIC MOUNTAINS AND ORE DEPOSITS OF THE TINTIC MINING DISTRICTS: UTAH GEOL. SOC. GUIDEBOOK, NO. 12, 183 P.

Reference (Deposit): MORRIS, H.T., 1964, GEOLOGY OF THE EUREKA QUADRANGLE, UTAH AND JUAB COUNTIES, UTAH: U.S. GEOLOGICAL SURVEY BULLETIN 1142-K, P. K1-K29.

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