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n <br />U <br />Geologic Description for Drill Hole 874E <br />t Nucla Mine, Montrose County, Colorado <br />Hole Number: 874E Associated Wells: G'A-N24(WM0024) <br />Date Drilled: 4/21/86 Location: T47ti ,R15tl, S:~I},iiW~ <br />Orilled By: Alan Chiles Section 31 <br />Logged_By: Gary Wendt Coordinates: 603,815' N <br />1,118,342' E <br />Elevation: 5764' <br />Depth Increment Description of Strata <br />(feet) <br />0.0- 0.3 SOIL, reddish brown, friable, ME/VE ' <br />0.3- 2.0 SANDSTONE, light grayish brown to brown, extremely <br /> hard, VE <br />2.0- 4.0 SHALE, gray, hard, SE/ME, extremely hard sandstone <br /> at 2.0-2.4 <br />4.0- 7.4 SHALE, very dark gray, slightly hard and soft black <br />• COAL and carbonaceous SHALE {weathered Upper Dakota <br /> seam), NE <br />7.4- 9.0 SANDSTONE, light gray, slightly hard, gray shale at <br /> 7.4-7.6, NE <br />9.0-13.0 SANDSTONE, broom, slightly hard to hard, NE, <br /> sandstone strata continues to 13.2 <br />13.0-15.7 SHALE; gray to dark gray, slightly hard to hard, NE, <br /> powdery yellow sulfur stains (Jarosite) in <br /> fractures, 50 percent light gray sandstone at <br /> 15.55-15.70 <br />15.7-23.5 COAL, Loxer Dakota seam, slightly hard light gray <br /> silty shale parting with powdery yellow sulfur <br /> stains (Jarosite) at 15.95-16.25, light gray silty <br /> shale streak at 17.36-17.44 and 17.53-17.57, NE <br />23.5-23.9 SHALE, dark grayish brown, slightly hard, +lE <br />23.9-26.8 SANDSTONE, light gray, hard with 35 percent slightly <br /> hard gray shale streaks, VE <br />G~ <br />6-i-SZ <br />• ~ -- ~ ~ -~ :- Revised 11/01/86 <br />Rsvtssntiaxcezooe Attachment 2.04.6-1-53 <br />