Atlantic and Pacific Mine

The Atlantic and Pacific Mine is a gold mine located in Madison county, Montana at an elevation of 8,005 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: Atlantic and Pacific Mine
Secondary: Atlantic & Pacific Mine
Secondary: A & P Mine
Secondary: Atlantic Pacific Mine

Commodity

Primary: Gold
Tertiary: Silver
Tertiary: Copper

Location

State: Montana
County: Madison
District: Pony

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

Not available

Ownership

Owner Name: 2900 Development Corp.
Percent: 100.0
Home Office: Montana
Info Year: 1994

Production

Not available

Deposit

Record Type: Site
Operation Category: Past Producer
Operation Type: Surface-Underground
Mining Method: Unknown
Year First Production: 1988
Discovery Method: Ore-Mineral In Place
Years of Production:
Organization:
Significant: N

Physiography

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

Mineral Deposit Model

Not available

Orebody

Not available

Structure

Not available

Alterations

Not available

Rocks

Not available

Analytical Data

Not available

Materials

Not available

Comments

Comment (Environmental Factors): A SOIL SAMPLE COLLECTED AT THE BASE OF THE HEAP LEACH PAD REVEALED A CYANIDE CONCENTRATION OF 16.1 MG/KG, AND A WATER SAMPLE COLLECTED FROM A LINED IMPOUNDMENT REVEALED 0.75 MG/1 CYANIDE. ONE DISCHARGING ADIT WAS IDENTIFIED AT THE SITE. MAXIMUM CONTAMINANT LEVELS WERE EXCEEDED FOR CADMIUM AND COPPER IN THE ADIT DISCHARGE. THE ADIT DISCHARGE PH MEASUREMENT WAS 3.6. PARK CREEK FLOWED ADJACENT TO THE SITE ON THE WEST SIDE. SURFACE WATER AND SEDIMENT SAMPLES WERE COLLECTED UPSTREAM AND DOWNSTREAM FROM THE SITE. AN OBSERVED RELEASE TO PARK CREEK WAS DOCUMENTED FOR LEAD. THREE POTENTIALLY HAZARDOUS OPEN ADITS WERE IDENTIFIED AT THE SITE.

References

Reference (Deposit): U.S. BUREAU OF MINES MISSOURI RIVER BASIN PRELIMINARY

Reference (Deposit): U.S. BUREAU OF MINES IC 6972, 1937, P. 38.

Reference (Deposit): U.S. GEOLOGICAL SURVEY BULLETIN 574, 1914, P. 121.

Reference (Deposit): PRIORITY SITES, SUMMARY REPORT, MARCH 1994, P. 5-161.

Reference (Deposit): REPORT 73, 1952, P. A-14.

Reference (Deposit): MONTANA DEPARTMENT OF STATE LANDS. ABANDONED HARDROCK MINES

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.