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Publication Extents

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Shorter contributions to general geology, 1929
Water Resources Division, U.S. Geological Survey
1930, Professional Paper 158
Thin beds that consist almost wholly of euhedral analcite crystals occur at five or more horizons in the upper half of the Green River formation of Utah and Colorado, a series of Eocene lake beds that contain large deposits of oil shale. Most of these beds contain also minute crystals...