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 Nave, F.R., 1952, Geology of a portion of the Bridger Range, Montana:State University of Iowa, M.S. thesis, 104 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
_f Flathead section 01S 06E 10 AC Along one of the forks of Middle Cottonwood Creek 45.76727032255 -110.967234113 TRS-SEC NAD83 24 8 SS: white, in beds 1-2 ft thick, with specs and bands of iron oxide, composed of quartz andgreensnad grains, fucoidal markings on the surface silica 13 probably not
_f Flathead section 01S 06E 10 AC Along one of the forks of Middle Cottonwood Creek 45.76727032255 -110.967234113 TRS-SEC NAD83 24 7 SS: white, spekled and banded with brown sandstone due to concentration of iron oxide 22 no
_f Flathead section 01S 06E 10 AC Along one of the forks of Middle Cottonwood Creek 45.76727032255 -110.967234113 TRS-SEC NAD83 26 6 SS: shaley, green and brown 1 no
_f Flathead section 01S 06E 10 AC Along one of the forks of Middle Cottonwood Creek 45.76727032255 -110.967234113 TRS-SEC NAD83 26 4 SS: white, mottled green brown and red brown; green sand and brown iron oxide 3 no
_f Flathead section 01S 06E 10 AC Along one of the forks of Middle Cottonwood Creek 45.76727032255 -110.967234113 TRS-SEC NAD83 26 2 SS: white, spekled with brown and red; somehorizons quartzitic, local crossbedding 35 no
*q Quadrant Section 01N 06E 36 C East side of the Bridger Range 45.7905136885 -110.9286376125 TRS-SEC NAD83 61 2 SS: white, quartzitic in places, massive fine - medium very resistant 67 no
*q Quadrant Section 01N 06E 36 C East side of the Bridger Range 45.7905136885 -110.9286376125 TRS-SEC NAD83 61 1 SS: similar to 2 above, hasa brownish red color near bottom, someinterbedded sandy limestones near base, gray red generally less resistant than upper unit fine - medium resistant 48 no