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 Key, C.F., 1987, Stratigraphy and depositional history of the Amsden and Lower Quadrant Formations, Snowcrest Range, Beaverhead and Madison Counties, Montana: Oregon State University, M.S. thesis, 187 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
*q Sheep Creek 09S 08W 18 BBB At the base of large quadrant cliff on the northwest side of Sheep Creek Canyon 45.05705985725 -112.6397454265 TRS-SEC NAD83 138 37 Quartz arenite, cliff former, very plae orange, thickly bedded, some heavy minerla layers in laminae. fine calcite cemented, well indurated 170 no
*q Sheep Creek 09S 08W 18 BBB 45.05705985725 -112.6397454265 TRS-SEC NAD83 138 36 quartz arenites- series of 2-5' ledge formers, white and locally hematite stained, medium bedded with isolated planar cross beds. fine calcite cemented 44 probably not
*q Sheep Creek 09S 08W 18 BBB 45.05705985725 -112.6397454265 TRS-SEC NAD83 138 34 quartz arenites- 2-4' ledge formers, white locally hematite stained, porous, medium bedded to massive fine calcite cemented, porous 62 maybe
*q Sheep Creek 09S 08W 18 BBB 45.05705985725 -112.6397454265 TRS-SEC NAD83 138 32 quartz arenites: 3-6' ledge formers, white with hematite stains massive fine calcite cemented, porous 57 maybe
*q Sheep Creek 09S 08W 18 BBB 45.05705985725 -112.6397454265 TRS-SEC NAD83 138 31 quartz arenite subdued ledge former,pale yellowish orange, thick to thin bedded calcite cemented 17 maybe
*q Sheep Creek 09S 08W 18 BBB 45.05705985725 -112.6397454265 TRS-SEC NAD83 138 29 quartz arenite- very light gray, subdued ledge former, medium bedded fine calcite cemented, porous 12 maybe
*q Sheep Creek 09S 08W 18 BBB 45.05705985725 -112.6397454265 TRS-SEC NAD83 139 28 Quartz arenite, ledge former, thin to medium bedded, pale yellowish orange fine calcite cemented 5 no
*q Sheep Creek 09S 08W 18 BBB 45.05705985725 -112.6397454265 TRS-SEC NAD83 139 26 Quartz arenite, ledge former, white, medium bedded fine silica cemented, porous 12 maybe
*q Sheep Creek 09S 08W 18 BBB 45.05705985725 -112.6397454265 TRS-SEC NAD83 139 25 Quartz arenite, ledge former, medium bedded, very pale orange fine calcite cemented 3 no
*q Sheep Creek 09S 08W 18 BBB 45.05705985725 -112.6397454265 TRS-SEC NAD83 139 24 Quartz arenite, ledge former, white, medium bedded, Locally hematite stained fine silica cemented, 12 probably not
*Msr Conover Ranch formation 09S 08W 18 BBB 45.05705985725 -112.6397454265 TRS-SEC NAD83 139 22 Quartz arenite- ledge former, very pale orange fine calcite cemented 1 no
*Msr Conover Ranch formation 09S 08W 18 BBB 45.05705985725 -112.6397454265 TRS-SEC NAD83 139 20 Quartz arenite- ledge former, very pale orange, thinly bedded with bassal contact containing limestone rip up clasts from subadjacent unit calcite cemented 1 no
*Msr Conover Ranch formation 09S 08W 18 BBB 45.05705985725 -112.6397454265 TRS-SEC NAD83 140 14 quartz arenite - ledge former, light brown fine calcite cemented 3 no
*Msr Conover Ranch formation 09S 08W 18 BBB 45.05705985725 -112.6397454265 TRS-SEC NAD83 141 2 quartz arenite - subdued ledge former, yellowish gray,thinly bedded with localizedplanar cross bed sets, interbedded with grainstonelenses calcite cemented 5 no
*q Ruby Gap 09S 03W 18 ACD At the base of large, overturned quadrant clifflocated on the north side of the Upper Ruby River Roa 45.05228596045 -112.010423315 TRS-SEC NAD83 143 14 quartzite , cliff former, pale yellowish brown, locally iron stained, thickly bedded fine well indurated 76 no
*q Ruby Gap 09S 03W 18 ACD 45.05228596045 -112.010423315 TRS-SEC NAD83 143 13 quartz arenite-ledge former, yellowish gray, massive fine calcite cemented 16 maybe
*q Ruby Gap 09S 03W 18 ACD 45.05228596045 -112.010423315 TRS-SEC NAD83 143 12 quartzite-ledge former, very pale orange, hevaily fractured, some surfaces display slickenslides 6 no
*q Ruby Gap 09S 03W 18 ACD 45.05228596045 -112.010423315 TRS-SEC NAD83 143 11 quartz arenite-ledge former, yellowish gray, locally bioturbated, crude medium beddingwith sportatic brown chert pods and stringers fine dolomite cemented 7 maybe
*q Ruby Gap 09S 03W 18 ACD 45.05228596045 -112.010423315 TRS-SEC NAD83 143 10 quartz arenite- ledge former, pale yellowish brown, massive. silica cemented 6 probably not
*q Ruby Gap 09S 03W 18 ACD 45.05228596045 -112.010423315 TRS-SEC NAD83 143 9 quartz arenite, subdued ledge former, yellowish gray, fine dolomite cemented 3 probably not
*q Ruby Gap 09S 03W 18 ACD 45.05228596045 -112.010423315 TRS-SEC NAD83 143 8 quartz arenite- ledge former, yellowish gray, massive, heavily fractured silica cemented 9 no
*q Ruby Gap 09S 03W 18 ACD 45.05228596045 -112.010423315 TRS-SEC NAD83 144 4 quartz arenites-series of ledge formers, yellowish gray, relict planar cross beds, heavily fractured fine silica cement 35 maybe
*q Ruby Gap 09S 03W 18 ACD 45.05228596045 -112.010423315 TRS-SEC NAD83 144 2 quartz arenite-subdued ledge former,light gray to yellowish gray, heavily fractured fine calcite cement 13 maybe
*q Snowcrest Mountain 10S 03W 6 ACC On a prominent ridge just to the south of the southern form of Romy Creek. 44.99381925755 -112.014533474 TRS-SEC NAD83 146 25 Quartz arenite- ledge former, yellowish gray, locally surfaces mottled by iron stained dots, fine dolomite cemented 13 probably not
*q Snowcrest Mountain 10S 03W 6 ACC 44.99381925755 -112.014533474 TRS-SEC NAD83 146 24 quartz arenite-ledge former, very pale orange, massive fine calcite cemented, very well indurated 14 no
*q Snowcrest Mountain 10S 03W 6 ACC 44.99381925755 -112.014533474 TRS-SEC NAD83 146 23 Quartz arenite- ledge former, yellowish gray, thickly bedded with iron stained laminae fine both dolomite and calcite cemented, porous 8 probably not
*q Snowcrest Mountain 10S 03W 6 ACC 44.99381925755 -112.014533474 TRS-SEC NAD83 146 22 Quartz arenite- subdued ledge former, heavily iron stained to grayish orange, massive and maybe bioturbated fine calcite cemented 30 maybe
*q Snowcrest Mountain 10S 03W 6 ACC 44.99381925755 -112.014533474 TRS-SEC NAD83 146 21 Quartz arenite- ledge former, grayish orange, thickly bedded fine calcite cemented 15 no
*q Snowcrest Mountain 10S 03W 6 ACC lower dolomitic interval 44.99381925755 -112.014533474 TRS-SEC NAD83 146 20 Quartz arenite- ledge former, light gray, thinly bedded with planar cross beds and trough cross beds fine dolomite cemented 10 probably not
*q Snowcrest Mountain 10S 03W 6 ACC 44.99381925755 -112.014533474 TRS-SEC NAD83 147 19 Quartz arenites- ledge formers, very pale orange, thickly bedded with faint laminae highlighted by iron stains, locally fractured fine dolomite and calcite cemented 46 maybe
*q Snowcrest Mountain 10S 03W 6 ACC 44.99381925755 -112.014533474 TRS-SEC NAD83 147 17 Quartz arenite- ledge former, very pale orange, this unit is heavily fractured with many surfaces showing slickslides dolomite cemented, well indurated 18 no
*q Snowcrest Mountain 10S 03W 6 ACC 44.99381925755 -112.014533474 TRS-SEC NAD83 147 16 Quartz arenite- poorly exposed series of ledges, thinly bedded, yellowish gray fine dolomite cemented 31 probably not
*q Snowcrest Mountain 10S 03W 6 ACC 44.99381925755 -112.014533474 TRS-SEC NAD83 147 14 Quartz arenite- ledge former, very pale orange, locally iron stained, medium bedded fine dolomite cemented 3 no
*q Sliderock Mountain 10S 04W 23 DDC At the summit of Sliderock Mountain 44.9425557587 -112.0533631665 TRS-SEC NAD83 150 53 Quartz arenites- clean, resistant ledge forming unit. Yellowish gray to gryaish orange pink. Some iron stains. Trough and planar cross beds fine locally dolomite cemented well sorted 220 probably not but could be nice!
*q Sliderock Mountain 10S 04W 23 DDC lower dolomitic interval 44.9425557587 -112.0533631665 TRS-SEC NAD83 150 51 quartz arenite, ledge former, very pale orange very fine dolomite cement very well indurated 15 no
*q Sliderock Mountain 10S 04W 23 DDC 44.9425557587 -112.0533631665 TRS-SEC NAD83 151 47 quartz arenite- ledge former, yellowish gray to pale red. Massive mottled on some surfaces and bioturbated very fine calcite cemented. Well indurated 10 no
*q Sliderock Mountain 10S 04W 23 DDC 44.9425557587 -112.0533631665 TRS-SEC NAD83 151 43 quarts arenite, resistant ledge former, very pale orange, thinly bedded, relcit corss beds. dolomite cemented 6 no
*q Sliderock Mountain 10S 04W 23 DDC 44.9425557587 -112.0533631665 TRS-SEC NAD83 151 41 quartz arenite- moderately resistant, very pale orange, samll hert pods, trough and planar cross beds with fossil fragments fine dolomite cemented 15 maybe
*q Sliderock Mountain 10S 04W 23 DDC 44.9425557587 -112.0533631665 TRS-SEC NAD83 151 37 quarts arenite- light brownish gray and massive fine dolomite cemented well sorted 7 maybe
*q Sliderock Mountain 10S 04W 23 DDC 44.9425557587 -112.0533631665 TRS-SEC NAD83 152 34 quartz arenite- yellowish gray, low angkle planar cross beds fine dolomite cemented 4 no
*q Sliderock Mountain 10S 04W 23 DDC 44.9425557587 -112.0533631665 TRS-SEC NAD83 152 32 quartz arenite- resistant ledge former, light brownish gray dolomite cemented 5 no
*q Sliderock Mountain 10S 04W 23 DDC 44.9425557587 -112.0533631665 TRS-SEC NAD83 152 30 quartz arenite- very pale orange, thinly bedded with irregular contacts between beds, locally scour and fill structures. medium dolomite cemented 3 probably not
*q Sliderock Mountain 10S 04W 23 DDC 44.9425557587 -112.0533631665 TRS-SEC NAD83 152 28 quartz arenite- ledge former, intergranular porosity, very pale orange, medium bedded with low angle cross beds. fine dolomite cemented 12 no
*Msr Sliderock Mountain 10S 04W 23 DDC 44.9425557587 -112.0533631665 TRS-SEC NAD83 155 4 quartz arentie- very resistant cliff former, very pale orange to light brown. Slightly conglomeritic towards the bottom of the unit medium calcite cement moderate 35 probably not
*Msr Sliderock Mountain 10S 04W 23 DDC 44.9425557587 -112.0533631665 TRS-SEC NAD83 155 1 quartz arenite - poorly expose, yellowish gray, mottled by iron-stained dots fine calcite cemented 10 no
*q Spur Mountain 10S 04W 23 BCC On the northeast flank of Spur Mountain 44.9498192587 -112.0689459165 TRS-SEC NAD83 157 43 quartz arenite- poorly exposed, yellowish gray, massive and bioturbated fine dolomite cemented 65 probably not
*q Spur Mountain 10S 04W 23 BCC 44.9498192587 -112.0689459165 TRS-SEC NAD83 157 41 quarts arenites- ledge formeres, massive, yellowish gray, fine dolomite cemented, well indurated 49 no
*q Spur Mountain 10S 04W 23 BCC 44.9498192587 -112.0689459165 TRS-SEC NAD83 157 39 quartz arenite - ledge former, yellowish gray, massive fine dolomite cemented, well indurated 21 no
*q Spur Mountain 10S 04W 23 BCC 44.9498192587 -112.0689459165 TRS-SEC NAD83 157 37 quartz arenite - subdued ledge former, yellowish gray. fine dolomite cemented 16 no
*q Spur Mountain 10S 04W 23 BCC 44.9498192587 -112.0689459165 TRS-SEC NAD83 158 35 quartz arenite - ledge former, very light gray to to yellowish gray, massive fine calcite cemented 20 probably not
*q Spur Mountain 10S 04W 23 BCC 44.9498192587 -112.0689459165 TRS-SEC NAD83 158 32 quartz arenite- ledge former, light gray, massive,undulatory basal contact dolomite cemented 12 no
*q Spur Mountain 10S 04W 23 BCC 44.9498192587 -112.0689459165 TRS-SEC NAD83 158 30 quartz arenite- subdued ledge former, very light gray, thinly bedded fine calcite cemented 5 probably not
*Msr Spur Mountain 10S 04W 23 BCC 44.9498192587 -112.0689459165 TRS-SEC NAD83 161 1 quartz arenite- ledge former, very pale orange, hematite stained trough cross bed-sets, locally sets contin a basal pebble layer medium calcite cemented 10 probably not
*q Hogback Mountain 11S 04W 7 ACA On overturned, northwestern flank of Hogback Mountain 44.89416277365 -112.1342924855 TRS-SEC NAD83 163 40 quartz arenite- ledge former, yellowish gray, medium bedded fine dolomite cemented 20 maybe
*Msr Hogback Mountain 11S 04W 7 ACA 44.89416277365 -112.1342924855 TRS-SEC NAD83 165 10 quartz arenite - subdued ledge former, pale brown, bioturbated, calcite vugs, faint cross laminations highlighted by iron staining very fine calcite cemented 5 no
*Msr Hogback Mountain 11S 04W 7 ACA 44.89416277365 -112.1342924855 TRS-SEC NAD83 166 7 quartz arenite- poorly exposed,light olive gray, calcite vugs, thinly bedded. fine calcite cement 10 maybe
*Msr Hogback Mountain 11S 04W 7 ACA 44.89416277365 -112.1342924855 TRS-SEC NAD83 166 1 quartz arenite- subdued ledge former, yellowish gray, medium bedded withplanar cross-bed sets. fine calcite cement 20 maybe
*q Sunset Peak 11S 04W 19 CCC on easter flank of Sunset peak, just below the summit 44.85619027045 -112.1468747925 TRS-SEC NAD83 168 45 quartz arenite- cliff former, very light gray to yellowish gray, thickly bedded fine silica cement 110 probably not
*q Sunset Peak 11S 04W 19 CCC 44.85619027045 -112.1468747925 TRS-SEC NAD83 44 quartz arenite - series of resistantledge formers, very pale orange, massive to thickly bedded,locally dolomite cement fine calcite cement 101 probably not
*q Sunset Peak 11S 04W 19 CCC lower dolomitic interval 44.85619027045 -112.1468747925 TRS-SEC NAD83 168 43 quartz arenite- ledge former, yellowish gray, massive fine dolomite cement 8 no
*q Sunset Peak 11S 04W 19 CCC 44.85619027045 -112.1468747925 TRS-SEC NAD83 42 alternating beds of dolomite na calcite cemented quartz arenites - series of ledge formers. Very pale orange to yellowish gray fine alternating calcite and dolomite cement 88 probably not
*q Sunset Peak 11S 04W 19 CCC 44.85619027045 -112.1468747925 TRS-SEC NAD83 169 38 quartz arenite- ledge former, very pale ornage, massive fine dolomite cement 10 no
*Msr Sunset Peak 11S 04W 19 CCC 44.85619027045 -112.1468747925 TRS-SEC NAD83 171 6 quartz arenites- ledge formers, light olive gray, locally hematite stained, interbedded locally with grainstone and pebble limestone conglomerates calcite cement 25 no
*q Sawtooth Mountain 12S 05W 9 CAA On the northern flank of Sawtooth Mountain 44.80415217215 -112.220590251 TRS-SEC NAD83 174 33 quartz arenite- ledge former , grayish orange fine dolomite cement 10 no
*Msr Sawtooth Mountain 12S 05W 9 CAA 44.80415217215 -112.220590251 TRS-SEC NAD83 177 4 quartz arenite- ledge former, yellowish gray. Cross laminations highlighted by hematite stains, presence of thin mudstone lenses, lower contact appears erosional fine calcite cement moderately 15 maybe
*Msr Sawtooth Mountain 12S 05W 9 CAA 44.80415217215 -112.220590251 TRS-SEC NAD83 177 1 quartz arenites- ledge formers, olive gray to yellowish gray, low angle trough and planar corss beds, hematite stainging, lower erosional contact present fine calcite cement, well indurated moderately 46 no
*q Red Rock River 13S 07W 22 CBD On a prominent ridge about two miles to the north of Lima Reservoir Road 44.6861566903 -112.449212102 TRS-SEC NAD83 180 39 quartz arenite- ledge former, light gray, medium bedded fine calcite cement, well indurated 12 no
*q Red Rock River 13S 07W 22 CBD 44.6861566903 -112.449212102 TRS-SEC NAD83 180 37 quartz arenite-series of ledge formers, yellowish gray, fair prosity, localized heavy mineral layers fine silica cement. FRIABLE 100 YES
*q Red Rock River 13S 07W 22 CBD 44.6861566903 -112.449212102 TRS-SEC NAD83 180 36 quartz arenites, ledge formers, dark yellowish orange, relict medium bedding fine silica cement, well indurated 74 no
*q Red Rock River 13S 07W 22 CBD 44.6861566903 -112.449212102 TRS-SEC NAD83 180 34 quartz arenites- partially exposed sequence within a talus field, yellowish gray - light brown, medium bedded, mny surfaces display slickenslides fine silica cement 413 maybe
*Msr Red Rock River 13S 07W 22 CBD 44.6861566903 -112.449212102 TRS-SEC NAD83 183 1 quartz arenite- poorly exposed, grayish orange, unit speckled by hematite stained dots fine calcite cement, FRIABLE 40 yes
*q Big Sheep Creek 13S 10W 36 BBA notheast of Hidden Pasture Creek, on a prominent NW dipping ridge of Dixon Mountain 44.666614265 -112.7714592105 TRS-SEC NAD83 185 22 Quartz arenite, series of ledge formers, yellowish gray, hematite stains,porous, medium to thickly bedded with numerous dime-sized concretions fine Dolomite cement, FRIABLE 57 YES
*Msr Big Sheep Creek 13S 10W 36 BBA 44.666614265 -112.7714592105 TRS-SEC NAD83 187 7 Quartz arenite- ledge former, yellowish gray, hematite stained in areas, medium bedded with fossil and possible bioturbated very fine calcite cement 5 no
*Msr Big Sheep Creek 13S 10W 36 BBA 44.666614265 -112.7714592105 TRS-SEC NAD83 187 5 quartz arenite- ledge former, moderate yellowish brown, heavily hematite stained, thinly bedded with some gastropod fossils very fine calcite cement 10 no
*Msr Big Sheep Creek 13S 10W 36 BBA 44.666614265 -112.7714592105 TRS-SEC NAD83 187 1 quartz arenite- small cliff former, very pale orange to hematite stained, moderate brown in the basal portion, massive and heavily fractured with slickenslides fine calcite cement 14 no