Edgar Mine

The Edgar Mine is a phosphorus-phosphates mine located in Granite county, Montana at an elevation of 5,400 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: Edgar Mine

Commodity

Primary: Phosphorus-Phosphates
Tertiary: Fluorine-Fluorite
Tertiary: Uranium

Location

State: Montana
County: Granite

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: State Of Montana (School Land) 320 Acres
Percent: 100.0
Home Office: Montana
Info Year: 1965

Production

Not available

Deposit

Record Type: Site
Operation Category: Past Producer
Operation Type: Surface-Underground
Mining Method: Unknown
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 (Deposit): PROPERTY EXPLORED AND MINED SINCE 1932, LAST SHIPMENT IN 1952 WAS 2200 ST OF 29% P205. MINED SECTION WAS 3-3.4 FT THICK, OVERHAND STOPPING WITH STULL TIMBER SUPPORT. PHOSPHORIA IS ON BOTH LIMBS OF PRINCETON ANTICLINE. EAST LIMB: UPPER ADIT(75 FT LONG), BED STRIKES N25W AND DIPS 30NE; RETORT MEMBER AT 36.2% P205 IS 2.1 FT THICK, AT 24.6% P205 IS 12 FT THICK, AT 23.2% IS 13.7 FT THICK. INFERRED RESERVES OF 3,350,000 ST ABOVE DRAINAGE LEVEL WEST LIMB: LOWER ADIT(325 FT LONG), 600 FT OF DRIFTS, AN AIR RAISE, AND SEVERAL OLD STOPES. BED STRIKES N10W AND DIPS 65W. INFERRED RESERVES OF 1600000 ST ABOVE ENTRY LEVEL. HANGING WALL IS CHERT, FOOTWALL IS SHALE, WEAK WALLS IN PHOSPHATE ROCK PRODUCE HEAVY SIDE PRESSURE OR CREEPING. SAMPLE LOT 1389 FROM USGS PROF PAPER 313-F IS LOCATED HERE.

References

Reference (Deposit): PROPERTIES AND INDUSTRIAL DEVELOPMENT DDEPARTMENT, PHOSPHATE

Reference (Deposit): REPORT.

Reference (Deposit): SWANSON, R.W., 1973, GEOLOGY AND PHOSPHATE DEPOSITS OF THE

Reference (Deposit): PERMIAN ROCKS IN CENTRAL WESTERN MONTANA: USGS PROF. PAPER

Reference (Deposit): 313-F, P 803.

Reference (Deposit): END ANDD MINING JOURNAL, JULY 1949, P133

Reference (Deposit): POPOFF, C.C., 1965, AN EVALUATION OF THE WESTERN PHOSPHATE

Reference (Deposit): INDUSTRY AND ITS RESOURCES, PART 2, MONTANA, USBM RI 6611.

Reference (Deposit): LUFT, STANLEY, 1958, NORTHERN PACIFIC RAILWAY COMPANY.

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.