The data displayed below were collected during a joint project between the following departments at Montana Tech of The University of Montana: Geophysical Engineering and the Montana Bureau of Mines and Geology. The samples represent sandstones collected and analyzed for their potential use as proppant material.

General Information
Reference McKelvey, V.E., 1959, The Phosphoria, Park City, and Shedhorn Formations in the Western Phosphate field: U.S. Geological Survey Professional Paper 313-A, 45 p.
Notes
Measured Section Details
Unit Symbol Name Township Range Section 1/4 Section Location Latitude Longitude Geomethod Datum Page Number Sub Unit Id Sandstone Description Grain Size Cementation Roundness Sorting Thickness (ft) Suitability
Psh Table 6. Stratigraphic Section of the Shedhorn, Phosphoria, and Park City formations 08S 02E 20 C SW1/4 sec. 20, T. 8 S., R. 2 E. 45.1188516278 -111.510910423 TRS-SEC NAD83 31 pale brown, thick bedded; contains small chert nodules and thin streaks of very finely sandy to cherty carbonate rock. fine hard 12.800000000000001 no
Psh Table 6. Stratigraphic Section of the Shedhorn, Phosphoria, and Park City formations 08S 02E 20 C 45.1188516278 -111.510910423 TRS-SEC NAD83 31 light brownish gray, massive, contains nodules and columns of yellowish-gray chert. fine - medium hard 5.5999999999999996 no
Psh Table 6. Stratigraphic Section of the Shedhorn, Phosphoria, and Park City formations 08S 02E 20 C 45.1188516278 -111.510910423 TRS-SEC NAD83 31 light brownish gray, massive, contains lenses and flat pebbles of dense carbonate rock, silicified fossils, and many dark grains for phosphorite fine - coarse hard 6.5 no
Psh Table 6. Stratigraphic Section of the Shedhorn, Phosphoria, and Park City formations 08S 02E 20 C 45.1188516278 -111.510910423 TRS-SEC NAD83 31 pale brown, massive, contains dark phosphorite, solid hydrocarbon and columns of chert fine hard 28.399999999999999 no