The Hogback Mountain Phosphate is a phosphorus-phosphates mine located in Madison county, Montana at an elevation of 9,849 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
Elevation: 9,849 Feet (3,002 Meters)
Commodity: Phosphorus-Phosphates
Lat, Long: 44.895, -112.11830
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.
Hogback Mountain Phosphate MRDS details
Site Name
Primary: Hogback Mountain Phosphate
Secondary: Hogback Mountain Phosphorus
Commodity
Primary: Phosphorus-Phosphates
Tertiary: Uranium
Tertiary: Fluorine-Fluorite
Location
State: Montana
County: Madison
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
Not available
Production
Not available
Deposit
Record Type: Site
Operation Category: Occurrence
Operation Type: Surface
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): LOC. CONSISTS OF TRENCHES ON E SCARP OF HOGBACK MT. PHOSPHORIA IS ON OVERTURNED WEST LIMB OF RUBY VALLEY SYNCLINE: BED ATTITUDE-N40E,50NW. RETORT MEMBER: BED IS 0.9 FT THICK @ 34.5% P2O5, 2 FT THICK AT 28.5%, AND 4.4 FT @ 19.0% P2O5. MEADE PEAK MEMBER: BED IS 4 FT THICK @ 28.8% P2O5, 5.8 FT @ 25.9% P2O5. SAMPLE LOT 1299 FROM USGS PROF. PAPER 313-E IS LOCATED HERE.
References
Reference (Deposit): USGS CIRC. 302, P. 5.
Reference (Deposit): U.S. GEOLOGICAL SURVEY PROF. PAPER 313-E, 1970, P. 760.
Reference (Deposit): U.S. BUREAU OF MINES RI 6611, 1965, P. 109.
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.
