The Armstrong is a mine located in Lewis and Clark county, Montana at an elevation of 6,001 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.
Elevation: 6,001 Feet (1,829 Meters)
Lat, Long: 46.4808, -112.28280
Map: View on Google Maps
Armstrong MRDS details
County: Lewis and Clark
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 indicate a claim status and does not necessarily indicate an area is open to prospecting.
Record Type: Site
Operation Category: Past Producer
Operation Type: Underground
Mining Method: Unknown
Years of Production:
General Physiographic Area: Rocky Mountain System
Physiographic Province: Northern Rocky Mountains
Mineral Deposit Model
Comment (Environmental Factors): THERE WERE NO TAILINGS ASSOCIATED WITH THIS SITE. THERE WAS ONE ADIT DISCHARGE, BUT FIELD PARAMETER MEASUREMENTS INDICATED UNIMPAIRED WATER QUALITY. MINNEHAHA CREEK WAS LOCATED IN THE DRAINAGE APPROXIMATELY 3000 FEET BELOW THE LOWER MINE WORKINGS. NO WATER SAMPLES WERE COLLECTED BECAUSE OF THE DISTANCE FROM THE SITE AND LACK OF SURFACE WATER RUNOFF. SAMPLING DURING EARLY SPRING SNOW MELT/RUNOFF EVENTS COULD POSSIBLY DOCUMENT IMPACTS TO THE CREEK. XRF SCREENING OF STREAM SEDIMENTS INDICATED NO IMPACTS TO THE CREEK ATTRIBUTABLE TO THIS SITE. THERE WAS ONE HAZARDOUS MINE OPENING, THE UPPER ADIT. THERE WAS ONE RESIDENCE ON-SITE THAT APPEARED TO BE USED OCCASIONALLY FOR RECREATIONAL USE.
Reference (Deposit): PRIORITY SITES, SUMMARY REPORT, MARCH 1994, P. 5-143.
Reference (Deposit): RUPPEL, 1963, U.S.GEOLOGICAL SURVEY BULLETIN 1151,P. 98.
Reference (Deposit): MONTANA DEPT. OF STATE LANDS. ABANDONED HARDROCK MINES