National Geologic Map Database
General Information
- Title: Bentonite deposits of the northern Black Hills district, Wyoming, Montana, and South Dakota
- Author(s): Knechtel, M.M., and Patterson, S.H.
- Publishing Organization: U.S. Geological Survey
- Series and Number: Bulletin 1082-M
- Larger Work: Contributions to economic geology, 1958
- Publication Date: 1962
- Map Scale: 1:48,000
- Cross Section: Yes
- North Latitude: 45° 2' 2" N (45.0340)
- South Latitude: 44° 40' 1" N (44.6670)
- East Longitude: 103° 48' 18" W (-103.8050)
- West Longitude: 104° 58' 12" W (-104.9700)
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* Names and boundaries are not necessarily authoritative, and are provided here solely for general orientation.