Citation |
Knechtel, M.M., and Patterson, S.H., 1955, Bentonite deposits of the northern Black Hills district, Montana, Wyoming and South Dakota: United States Geological Survey USGS Mineral Investigations Field Study Maps 36, 2 sheets, scale 1:48,000.
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Geographic Area/Counties |
BIG HORN, BLAINE, BROADWATER, CARBON, CARTER, CASCADE, CHOUTEAU, CUSTER, DANIELS, DAWSON, FALLON, FERGUS, GALLATIN, GARFIELD, GLACIER, GOLDEN VALLEY, HILL, JEFFERSON, JUDITH BASIN, LEWIS AND CLARK, LIBERTY, MCCONE, MEAGHER, MUSSELSHELL, PARK, PETROLEUM, PHILLIPS, PONDERA, POWDER RIVER, PRAIRIE, RICHLAND, ROOSEVELT, ROSEBUD, SANDERS, SHERIDAN, STILLWATER, SWEET GRASS, TETON, TOOLE, TREASURE, VALLEY, WHEATLAND, WIBAUX, YELLOWSTONE
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