The data below represent everything available in the MBMG Abandoned and Inactive Mines (AIM) database.

Sites Table
AIM Id Name Alternate Name District County
BE000052 LENTUNG (PROSPECT) DEPOSIT UNION CARBIDE /US BORAX CLAIMS ROCK CREEK BEAVERHEAD
MRDS AMLI MILS Latitude Longitude Datum
300010616 45.5183 -112.8283
Township Range Section QSection UTM Northing UTM Easting UTM Zone UTM Datum
04S 10W 3 BDBD 5041757 357131 12
Average Elevation Elev Units Land Owner 250K Quad 100K Quad 24K Quad
7700 F NF DILLON BUTTE SOUTH STORM PEAK
Property Type Update Date Who Updated
LODE 9/4/1996 PAH
Commodities Table
Commodities Identified
MOLYBDENUM
TUNGSTEN
Agency Info Table
Information
Agency: NF
Region District: R1
Ranger District: DILLON
Forest Service Tract:
Watershed Code: 10020004
Forest or Resource Area: BEAVERHEAD
Owner: N
Impact:
Report: The Lentung deposit was the subject of DeBoer's 1991 MS thesis and this reference is the most complete description of the area to date. It is hosted by the Amsden Formation which has been intruded by the Pioneer Batholith. It is considered to be the buried extension of the deposit found at Brownes Lake. Reserves are estimated by DeBoer as 3.3 million tons of 0.48% WO3. Exploration has consisted primarily of drilling and construction of drill roads. US Borax explored the property from 1988 to 1989 when it dropped the claims.
Screening Criteria Table
Information
Mill Tailings:
Adit Discharge:
Metal Leaching:
Water Erosion:
Residence:
Hazardous Materials:
Open Adit:
Visit: Y
Comments: EXPLORATION DRILL ROADS AND HOLES ONLY.
Rank Table
Information
Investigator: P. HARGRAVE
Date: 8/29/1996
Photos Available?:
Access: 4W
Nearest Wetlands/Bog:
Drainage Basin: ROCK CREEK
Water Contact Stream:
Nearest Surface Water Intake:
Number of Surface Water Intake(s) observed within 15 miles downstream:
Uses of Surface Water Intake(s) observed within 15 miles downstream:
Nearest Wells (miles):
Number of Wells within 4 miles:
Uses of Wells within 4 miles:
Nearest Dwelling (miles):
Number of Months Occupied:
Number of Houses within 2 miles:
Recreational Usage on Site:
Nearest Recreational Area (miles):
Name or Type of Recreational Area:
Safety Risk from Open Adit/Shaft:
Safety Risk from Highwall or Unstable Slopes:
Safety Risk from Unstable Structures:
Safety Risk from Chemicals:
Safety Risk from Solid Waste (includes sharp rusted items):
Safety Risk from Explosives:
Sensitive Environments within 2 miles of Site or 15 miles Downstream:
Population within 0-0.25 miles:
Population within 0.25-0.5 miles:
Population within 0.5-1 miles:
Population within 1-2 miles:
Population within 2-3 miles:
Population within 3-4 miles:
Public Interest:

End of report. Retrieved 5/3/2024 9:14:07 PM.

The preceding materials represent the contents of the databases at the Montana Bureau of Mines and Geology at the time and date of the retrieval. The information is considered unpublished and is subject to correction and review on a daily basis. The Bureau warrants the accurate transmission of the data to the original end user at the time and date of the retrieval. Retransmission of the data to other users is discouraged and the Bureau claims no responsibility if the material is retransmitted. There may be data in the request area that are not recorded at the Bureau.