Eva May Mine

The Eva May Mine is a silver, lead, and copper mine located in Jefferson county, Montana.

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: Eva May Mine
Secondary: Eva May Tailings

Commodity

Primary: Silver
Primary: Lead
Primary: Copper
Secondary: Gold
Secondary: Zinc
Tertiary: Arsenic
Tertiary: Antimony

Location

State: Montana
County: Jefferson
District: Basin (Cataract, Comet) District

Land Status

Land ownership: National Forest
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: Surface/Underground

Ownership

Owner Name: Neuberg Brothers And Sloan Inc.
Home Office: First National Bank, Butte, Mt.

Owner Name: W. K. Miller
Home Office: Basin, Mt.

Production

Not available

Deposit

Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Years of Production:
Organization:
Significant: N
Deposit Size: S

Physiography

General Physiographic Area: Rocky Mountain System
Physiographic Province: Northern Rocky Mountains

Mineral Deposit Model

Not available

Orebody

Not available

Structure

Not available

Alterations

Alteration Type: L
Alteration Text: Sericitization Of Alaskite

Rocks

Name: Quartz Monzonite
Role: Associated
Age Type: Associated Rock
Age Young: Late Cretaceous

Name: Quartz Monzonite
Role: Associated
Age Type: Host Rock
Age Young: Late Cretaceous

Name: Quartz Monzonite
Role: Associated
Age Type: Associated Rock Unit
Age Young: Late Cretaceous

Analytical Data

Not available

Materials

Ore: Chalcopyrite
Ore: Sphalerite
Ore: Galena
Ore: Tetrahedrite
Ore: Gold
Gangue: Tourmaline
Gangue: Quartz
Gangue: Pyrite

Comments

Comment (Workings): SHAFT, DRIFTS, 8 LEVELS, SEVERAL THOUSAND FEET OF WORKING COLLAR OF SHAFT IS NOW COVERED BY THE DUMP OF A BULLDOZER CUT EXCAVATED RECENTLY (1960) TO EXPLORE THE VEIN. IN ADITION A 420FT ADIT DRIVEN TO EXPLORE THE VEIN AT ABOUT THE 100FT LEVEL OF THE SHAFT.

Comment (Location): NEAR THE JUNCTION OF CATARACK AND HOODO CREEK. ; INFO FROM LAND.ST :(1950)

Comment (Production): ANALYSIS CITED BY W. H WEED (1902) SHOWS 9.83% PB, 6% ZN, 4.56% CU, .1 OZ/TON AU, 1.85 OZ/TON AG. TOTAL PRODUCTION REPORTED AS $2 MILLION WORTH OF ORE UP TO 1953.

Comment (Development): 7 PATENTED AND 7 UNPATENTED CLAIMS ; ECON.COM: 50 TON MILL BUILT AT THE MINE IN 1910

Comment (Deposit): LARGE VEIN WITH THICK SHOOTS BUT AWAY FROM ENRICHING FRACTURE IS TOO POOR TO WORK FOUR ORE BODIES 80-200 FT. STRIKE LENGTH, 6-15 FT. WIDE EVA MAY MINE IS AT THE E END OF THE EVA MAY-CRYSTAL-BULLION VEIN, IT HAS A RECOGNIZED STRIKE LENGTH OF MORE THAN 3.5 MI.

References

Reference (Deposit): MBMG BULL 16, P. 29.

Reference (Deposit): USGS BULL 527, P. 122-23.

Reference (Deposit): USGS BULL 842, P. 295

Reference (Deposit): USGS PP 428, P. 36, 45, 91

Reference (Deposit): MBMG MEM 31, P. 42-3.

Reference (Deposit): MBMG BULL 82, P. 10

Reference (Production): MBMG BULL 16, P. 102.

Principal Gold Districts of Montana

In Montana, 54 mining districts have each have produced more than 10,000 ounces of gold. The largest producers are Butte, Helena, Marysville, and Virginia City, each having produced more than one million ounces. Twenty seven other districts are each credited with between 100,000 and one million ounces of gold production. Read more: Principal Gold Districts of Montana.