Flagstaff Hill

The Flagstaff Hill is a phosphorus-phosphates mine located in Granite county, Montana at an elevation of 5,440 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

Name: Flagstaff Hill  

State:  Montana

County:  Granite

Elevation: 5,440 Feet (1,658 Meters)

Commodity: Phosphorus-Phosphates

Lat, Long: 46.3328, -113.28440

Map: View on Google Maps

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.


Satelite image of the Flagstaff Hill

Flagstaff Hill MRDS details

Site Name

Primary: Flagstaff Hill


Commodity

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


Location

State: Montana
County: Granite


Land Status

Land ownership: Unknown
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

Not available


Production

Not available


Deposit

Record Type: Site
Operation Category: Occurrence
Operation Type: Unknown
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 (Workings): WORKINGS CONSIST OF A 100 FT LONG ADIT (CAVED) AND SEVERAL TRENCHES, LOCATED ON TOP OF FLAGSTALL 1+1LL ( WITHIN PHILIPSBURG CITY LIMITS), ROCK IS AN ISOLATED FAULT BLOCK OR AN OUTLIER WITHIN ALLUVIUM. PHOSPHORIA DIPS 55W; 3 FT THICK BED AT 20% P205. A SECTION BETWEEN A SHALE HANGING WALL AND A PHOSPHATIC CHERT FOOTWALL IS MORE THAN 9 FT THICK AT 17% P205.


References

Reference (Deposit): CRIB

Reference (Deposit): PHIPIPSBURG, AND AVON, MONTANA: USGS BULL 847-D, P 184.

Reference (Deposit): REPORT.

Reference (Deposit): PARDEE, J.T., 1936, PHOSPHATE ROCK NEAR MAXVILLE,

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

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

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

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


Principal Gold Districts of Montana

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.