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 Tysdal, R.G., 1970, Geology of the north end of the Ruby Range, southwestern Montana: University of Montana, Ph.D. dissertation, p. 133-180.
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
*q Section A 06S 05W 21 BB 45.30350260415 -112.2284362865 TRS-SEC NAD83 134 20 quartz, very pale orange, well cemented very fine grained calcareous, well 12 no
*q Section A 06S 05W 21 BB 45.30350260415 -112.2284362865 TRS-SEC NAD83 135 15 quartz, oderate orange - pink, breccia or tectonic origin fine calcareous 5 no
Mk Section B 06S 05W 7 AAS2 45.33252681875 -112.254263961 TRS-SEC NAD83 137 3 quartz, pale-reddish brown, thick bedded but finely laminated, fine to medium 0.5 no
Mk Section B 06S 05W 7 AAS2 45.33252681875 -112.254263961 TRS-SEC NAD83 136 12 quartz,moderate orange - pink, medium bedded and contains pink chert grains medium 2 no
Mk Section B 06S 05W 7 AAS2 45.33252681875 -112.254263961 TRS-SEC NAD83 136 13 quartz, pale reddish-brown, thick bedded fine - medium 2.5 probably not
Mk Section B 06S 05W 7 AAS2 45.33252681875 -112.254263961 TRS-SEC NAD83 136 15 same as unit 12 1 probably not
Mk Section B 06S 05W 7 AAS2 45.33252681875 -112.254263961 TRS-SEC NAD83 136 17 quartz, pale reddish-brown, medium bedded fine - medium 2 probably not
Mk Section B 06S 05W 7 AAS2 45.33252681875 -112.254263961 TRS-SEC NAD83 136 20 same as unit 17 3 probably not
Mk Section B 06S 05W 7 AAS2 45.33252681875 -112.254263961 TRS-SEC NAD83 136 21 same as unit 12 0.5 no
Mk Section B 06S 05W 7 AAS2 45.33252681875 -112.254263961 TRS-SEC NAD83 136 23 same as unit 12 2.5 probably not
_f Section L 06S 05W 24 CD 45.29257432505 -112.16150696 TRS-SEC NAD83 179 1 quartz, dusky yellow-brown to brownish black and dark yellowish orange. Mn and limonite staining medium and coarse subangular to subroundedquartz 0.5 no
_f Section L 06S 05W 24 CD 45.29257432505 -112.16150696 TRS-SEC NAD83 179 2 quartz, conglometatic, clasts are quartz, same colors are unit 1 pebbles and cobbles subangular to subrounded 0.5 no
_f Section L 06S 05W 24 CD 45.29257432505 -112.16150696 TRS-SEC NAD83 179 3 quartz, light brown, thick bedded very fine to fine well cemented 4.5 no
_f Section L 06S 05W 24 CD 45.29257432505 -112.16150696 TRS-SEC NAD83 179 4 quartz, moderate orangish-pink, mottled moderate reddish-brown, fine with some quartz pebbles subrounded to rounded 1 probably not
_f Section L 06S 05W 24 CD 45.29257432505 -112.16150696 TRS-SEC NAD83 179 5 same as unit 3 3.5 no
_f Section L 06S 05W 24 CD 45.29257432505 -112.16150696 TRS-SEC NAD83 179 6 dark yellowish orange, thick bedded, limonite and hematite spots throughout fine rounded 5 yes
_f Section L 06S 05W 24 CD 45.29257432505 -112.16150696 TRS-SEC NAD83 178 8 same as unit 6 but medium and thick bedded 5.7999999999999998 yes
_f Section L 06S 05W 24 CD 45.29257432505 -112.16150696 TRS-SEC NAD83 178 9 quartz, very pale orange, Upper 3 " contains angular quartz clasts, medium bedded fine friable subrounded 1 too thin
_f Section L 06S 05W 24 CD 45.29257432505 -112.16150696 TRS-SEC NAD83 178 10 quartz, light brown, thick bedded very fine 8 probably not
_f Section L 06S 05W 24 CD 45.29257432505 -112.16150696 TRS-SEC NAD83 178 12 quartz, medium bedded, light brown fine friable, slightly calcareous subangular to subrounded 7 yes
_f Section L 06S 05W 24 CD 45.29257432505 -112.16150696 TRS-SEC NAD83 178 14 same as unit 12 1.5 yes
_f Section L 06S 05W 24 CD 45.29257432505 -112.16150696 TRS-SEC NAD83 178 16 quartz, light brown. fine well cemented 4 no
_f Section L 06S 05W 24 CD 45.29257432505 -112.16150696 TRS-SEC NAD83 178 17 quartz, pinkish-gray, medium bedded, fine to medium subrounded 3 probably not