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 Klepper, M.R., Ruppel, E.T., Freeman, V.L., Weeks, R.A., 1971, Geology and mineral deposits, east flank of the Elkhorn Mountains, Broadwater County, Montana: U.S. Geological Survey Professional Paper 665, 66 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 Section 1. Morrison, Swift, Phosphoria, Quadrant, and Amsden formations near Indian Creek 06N 01E 5 B 46.3078570308 -111.635462748 TRS-SEC NAD83 51 72 honey-colored, weathered surface very rough very fine dolomitic 2 no
*q Section 1. Morrison, Swift, Phosphoria, Quadrant, and Amsden formations near Indian Creek 06N 01E 5 B 46.3078570308 -111.635462748 TRS-SEC NAD83 51 55 sandstone dolomitic friable 1 no
*q Section 1. Morrison, Swift, Phosphoria, Quadrant, and Amsden formations near Indian Creek 06N 01E 5 B 46.3078570308 -111.635462748 TRS-SEC NAD83 51 52 sandstone, sandy,almost white, punky calcareous or limestone? 5.5 probably not
*q Section 1. Morrison, Swift, Phosphoria, Quadrant, and Amsden formations near Indian Creek 06N 01E 5 B 46.3078570308 -111.635462748 TRS-SEC NAD83 51 49 Sandstone, or sandy limestone, light gray calcareous, friable 10.5 maybe
*q Section 1. Morrison, Swift, Phosphoria, Quadrant, and Amsden formations near Indian Creek 06N 01E 5 B 46.3078570308 -111.635462748 TRS-SEC NAD83 51 47 Yellowish gray fine calcareous 2 maybe
*q Section 1. Morrison, Swift, Phosphoria, Quadrant, and Amsden formations near Indian Creek 06N 01E 5 B 46.3078570308 -111.635462748 TRS-SEC NAD83 51 40 Yellowish-gray and very light gray, upper part quartzitic fine dolomitic 4 maybe
*q Section 1. Morrison, Swift, Phosphoria, Quadrant, and Amsden formations near Indian Creek 06N 01E 5 B 46.3078570308 -111.635462748 TRS-SEC NAD83 51 35 pale-yellowish-brown, thin bedded dolomitic 2 probably not
*Ma Section 1. Morrison, Swift, Phosphoria, Quadrant, and Amsden formations near Indian Creek 06N 01E 5 B 46.3078570308 -111.635462748 TRS-SEC NAD83 51 29 pale red, gritty, cross bedded coarse 1 no
*Ma Section 1. Morrison, Swift, Phosphoria, Quadrant, and Amsden formations near Indian Creek 06N 01E 5 B 46.3078570308 -111.635462748 TRS-SEC NAD83 51 28 very light gray very fine slightly dolomitic 0.5 no
*Ma Section 1. Morrison, Swift, Phosphoria, Quadrant, and Amsden formations near Indian Creek 06N 01E 5 B 46.3078570308 -111.635462748 TRS-SEC NAD83 51 27 grayish red, oolitic very fine 1 no
*q Section 1. Morrison, Swift, Phosphoria, Quadrant, and Amsden formations near Indian Creek 07N 01E 32 46.3189566975 -111.630402688 TRS-SEC NAD83 51 72 honey-colored, weathered surface very rough very fine dolomitic 2 no
*q Section 1. Morrison, Swift, Phosphoria, Quadrant, and Amsden formations near Indian Creek 07N 01E 32 46.3189566975 -111.630402688 TRS-SEC NAD83 51 55 sandstone dolomitic friable 1 no
*q Section 1. Morrison, Swift, Phosphoria, Quadrant, and Amsden formations near Indian Creek 07N 01E 32 46.3189566975 -111.630402688 TRS-SEC NAD83 51 52 sandstone, sandy,almost white, punky calcareous or limestone? 5.5 probably not
*q Section 1. Morrison, Swift, Phosphoria, Quadrant, and Amsden formations near Indian Creek 07N 01E 32 46.3189566975 -111.630402688 TRS-SEC NAD83 51 49 Sandstone, or sandy limestone, light gray calcareous, friable 10.5 maybe
*q Section 1. Morrison, Swift, Phosphoria, Quadrant, and Amsden formations near Indian Creek 07N 01E 32 46.3189566975 -111.630402688 TRS-SEC NAD83 51 47 Yellowish gray fine calcareous 2 maybe
*q Section 1. Morrison, Swift, Phosphoria, Quadrant, and Amsden formations near Indian Creek 07N 01E 32 46.3189566975 -111.630402688 TRS-SEC NAD83 51 40 Yellowish-gray and very light gray, upper part quartzitic fine dolomitic 4 maybe
*q Section 1. Morrison, Swift, Phosphoria, Quadrant, and Amsden formations near Indian Creek 07N 01E 32 46.3189566975 -111.630402688 TRS-SEC NAD83 51 35 pale-yellowish-brown, thin bedded dolomitic 2 probably not
*Ma Section 1. Morrison, Swift, Phosphoria, Quadrant, and Amsden formations near Indian Creek 07N 01E 32 46.3189566975 -111.630402688 TRS-SEC NAD83 51 29 pale red, gritty, cross bedded coarse 1 no
*Ma Section 1. Morrison, Swift, Phosphoria, Quadrant, and Amsden formations near Indian Creek 07N 01E 32 46.3189566975 -111.630402688 TRS-SEC NAD83 51 28 very light gray very fine slightly dolomitic 0.5 no
*Ma Section 1. Morrison, Swift, Phosphoria, Quadrant, and Amsden formations near Indian Creek 07N 01E 32 46.3189566975 -111.630402688 TRS-SEC NAD83 51 27 grayish red, oolitic very fine 1 no