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 Glasheen, R.M., 1969, Geology of the Whetstone Ridge area, Meagher County, Montana: Oregon State University, M.S. thesis, 137 p.
Notes Reference has information on the Judith River and Lennep formations. None of the sandstone units appear promising because of either high lithic or feldspar content.
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 Section of the flathead formation 09N 09E 13 BDA 0.55 miles S55?W of Flagstaff reservoir Dam 46.5436857018 -110.536645814 TRS-SEC NAD83 110 4 dominantly quartz, grayish-red, thin bedded, worm molds and hogback former medium silica, well indurated subrounded to sub angular fair 55 probably not
_f Section of the flathead formation 09N 09E 13 BDA 46.5436857018 -110.536645814 TRS-SEC NAD83 110 2 grayish orange -pink, dominantly quartz, thin-bedded, weathers light brown, no worm molds as seen above, hogback former. coarse silica, well indurated subrounded poor 28 probably not
*Ma Table 7 09N 10E 31 BCC 0.28 miles N45?W of coyote springs no.697 46.49840084185 -110.5241892585 TRS-SEC NAD83 116 1 pale yellow orange,moderate feldspar, subordinate sublithic fragments, woody fragments, thin bedded, poorly exposed and subdued ridge former fine grades upwards from non calcareous to very calcareous angular quartz fair 140 maybe
*q Table 8 08N 09E 2 CBC 2.3 miles N28?W of Bonanza Ranch 46.48056997685 -110.574846111 TRS-SEC NAD83 117 6 light grey, thick bedded, crude cross bedding near top. Ledge former medium silicious dominantly angular quartz fair 55 probably not
*q Table 8 08N 09E 2 CBC 2.3 miles N28?W of Bonanza Ranch 46.48056997685 -110.574846111 TRS-SEC NAD83 117 4 light grey, very thin bedded, weathers light brown, limonite staining? Subdued ledge former silicious subrounded quartz dominated 10 no
*q Table 8 08N 09E 2 CBC 2.3 miles N28?W of Bonanza Ranch 46.48056997685 -110.574846111 TRS-SEC NAD83 117 3 yellow-grey, cross-bedded, weathers dark yellow-orange, subdued ledge former, limonitic staining fine 5 no
*q Table 8 08N 09E 2 CBC 2.3 miles N28?W of Bonanza Ranch 46.48056997685 -110.574846111 TRS-SEC NAD83 117 1 light grey, dominantly quartz with very subordinate dark fragments, cross bedded medium well indurated rounded quartz poor 16 no
Ke Table 12 08N 09E 26 BBD 1.3 miles NW ofOld Lennep General Store 46.42978948885 -110.5721171715 TRS-SEC NAD83 124 30 Light gray, dominantly quarts with traceof woody fragments, crossbedded major bluff former medium very calcareous angular quartz 41.799999999999997 maybe
Ke Table 12 08N 09E 26 BBD 1.3 miles NW ofOld Lennep General Store 46.42978948885 -110.5721171715 TRS-SEC NAD83 124 28 medium light grey, cross laminated, weathers into square yellow grey chips, moderate wody chips, sharp ridge former very fine very calcareous 36.5 probably not
Ke Table 12 08N 09E 26 CAB 46.42435236385 -110.5694964215 TRS-SEC NAD83 125 22 olive gray, quarts feldspar and moderate woody fragments, very thin bedded, low ledge former, numerous pelecypod fragments very fine very calcareous angular quartz poor 1.2 no
Ke Table 12 08N 09E 26 CAB 46.42435236385 -110.5694964215 TRS-SEC NAD83 125 21 yellow gray, subordinate feldspar,moderate woody fragments, low ridge former, thin bedded very fine very calcareous angular quartz poor 7.7999999999999998 no
Ke Table 12 08N 09E 26 CAB 46.42435236385 -110.5694964215 TRS-SEC NAD83 125 19 light olive gray, subordingat feldspar, thick-cross-bedded, limestone concretions weathering out, subdued ridge former very fine very calcarous angular quartz good 3.2999999999999998 probably not
Ke Table 12 08N 09E 26 CAB 46.42435236385 -110.5694964215 TRS-SEC NAD83 126 17 subdued ridge former, like unit 15 but has locally abundant leaf impressions very fine 1 no
Ke Table 12 08N 09E 26 CAB 46.42435236385 -110.5694964215 TRS-SEC NAD83 126 15 light olive gray, predominant angular quartz, moderate feldspar, numerous biotite flakes, cross laminated, low sharpridge former very fine very calcareous angular quartz good 1 no
Ke Table 12 08N 09E 26 CAB 46.42435236385 -110.5694964215 TRS-SEC NAD83 126 13 light olive gray, abundant quartz and feldspar, thin cross bedded, low rounded ridge former very fine carbonate subrounded fair 3.1000000000000001 no
Ke Table 12 08N 09E 26 CAB 46.42435236385 -110.5694964215 TRS-SEC NAD83 126 11 light olive gray, predominant quartz, subordinate feldspar, trace biotite, strongly cross laminated, low rideg former very fine moderte carbonate cement angular quartz fair 2.2999999999999998 no
Ke Table 12 08N 09E 26 CAB 46.42435236385 -110.5694964215 TRS-SEC NAD83 126 9 light olie gray, dominantly quartz, moderate biotite, trace feldspar, thin cross-bedded, very fine carbonate subangular quartz to well rounded chert fair 4 no
Ke Table 12 08N 09E 26 BDD 46.42616473885 -110.5668756715 TRS-SEC NAD83 127 7 same as unit 3 4 no
Ke Table 12 08N 09E 26 BDD 46.42616473885 -110.5668756715 TRS-SEC NAD83 127 5 similar to 3 4.0999999999999996 no
Ke Table 12 08N 09E 26 BDD 46.42616473885 -110.5668756715 TRS-SEC NAD83 127 3 light olive gray, predominant quartz, subordinate feldspar, numerous biotite flakes, thin cross bedded, low ridge former very fine abundant carbonate cement angular quartz fair 3.7999999999999998 no
Ke Table 12 08N 09E 26 BDD 46.42616473885 -110.5668756715 TRS-SEC NAD83 127 1 yellow gray, quartz dominant, abundant biotite flakes, low sharp ridge former very fine much carbonate cement subangular quartz poor 3 no