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 McMannis, W.J., 1952, Geology of the Bridger Range area, Montana: Princeton University, Ph.D. dissertation, 47 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
*Mt South Angler 02N 06E 15 45.92332793315 -110.966952933 TRS-SEC NAD83 18 brick red with thick purple siltstone layer in the middle part. Base of ss. Unit, top of lower red unit 47 no
*Mt South Angler 02N 06E 15 45.92332793315 -110.966952933 TRS-SEC NAD83 20 pink 4 no
*Mt South Angler 02N 06E 15 45.92332793315 -110.966952933 TRS-SEC NAD83 22 pink coarse calcareous 4 yes
*Mt Southeast Sacajawea 02N 06E 26 One mile south of Fairy Lake 45.8943895845 -110.9461223525 TRS-SEC NAD83 2 light yellow gray to yellow brown, meidum irregularly bedded, limonite stain and chert nodules medium non-calcareous 8 no
*Mt Southeast Sacajawea 02N 06E 26 One mile south of Fairy Lake 45.8943895845 -110.9461223525 TRS-SEC NAD83 4 ss. Light yellow brown to pale brown, quartz grains, thick irregular bedding (units 1-4 in this section could belong to Quadrant medium subrounded to well rounded 21 yes
*Mt Southeast Sacajawea 02N 06E 26 One mile south of Fairy Lake 45.8943895845 -110.9461223525 TRS-SEC NAD83 6 Calcareous sandstone, pale yellow gray, thick irregularly bedded, massive medium calcareous subrounded to well rounded quartz 7 maybe
*Mt Southeast Sacajawea 02N 06E 26 One mile south of Fairy Lake 45.8943895845 -110.9461223525 TRS-SEC NAD83 8 yellow brown, and thick irredular bedding fine to medium calcareous subroundedquartz 7
*Mt Southeast Sacajawea 02N 06E 26 One mile south of Fairy Lake 45.8943895845 -110.9461223525 TRS-SEC NAD83 31 moderate brownish red to pale yellowish orange, thick irregularly bedded fine well indurated 14 no
*Mt Southeast Sacajawea 02N 06E 26 One mile south of Fairy Lake 45.8943895845 -110.9461223525 TRS-SEC NAD83 33 pale yellowish organe to grayish orange, thick irregularly bedded, mottled in upper part fine to medium subrounded quarts grains 40 maybe
*Mt Southeast Sacajawea 02N 06E 26 One mile south of Fairy Lake 45.8943895845 -110.9461223525 TRS-SEC NAD83 43 pale red to pale brownish red, medium irregularly bedded, some clay pellet breccia fine to medium subrounded quartz grains 10 probably not
*Mt Ross Peak 01N 06E 2 East side of Ross peak 45.86590507565 -110.9436802455 TRS-SEC NAD83 17 dark grayish red, massive fine very well indurated 6 no
*Mt Ross Peak 01N 06E 2 East side of Ross peak 45.86590507565 -110.9436802455 TRS-SEC NAD83 18 Sandstone and calcarenite, pale yellowish orange, some interbedded red silt layers, fine subangluar quartz 72 no
*Mt Ross Peak 01N 06E 2 East side of Ross peak 45.86590507565 -110.9436802455 TRS-SEC NAD83 20 mottled grayish red, gray and white, massive bedded very fine well indurated 4.5 no
*Mt Ross Peak 01N 06E 2 East side of Ross peak 45.86590507565 -110.9436802455 TRS-SEC NAD83 22 dark grayish red, massive very fine well indurated, resistant 3 no
Jsw Bighorn Lake 02N 06E 15 on ridge just south of bighorn Lake 45.92332793315 -110.966952933 TRS-SEC NAD83 1 yellow gray to pale gray to pale orange, thin to medium bedded, cross bedded, conglomerate in lower 8', fossiliferous, glauconitic fine to coarse calcareous 72 probably not
Jsw Southeast Sacajawea 02N 06E 26 one mile south -southeast of Fairy Lake 45.8943895845 -110.9461223525 TRS-SEC NAD83 1 yellow brown to gray brown, thin bedded, salt and pepper look, glauconitic, limonite stained, somefossils medium resistant subrounded quartz and chert 70 no
Jsw Southeast Sacajawea 02N 06E 26 one mile south -southeast of Fairy Lake 45.8943895845 -110.9461223525 TRS-SEC NAD83 2 same as 1 except medium bedded and more porous medium resistant subrounded quartz and chert 10 no