Contributions to Economic Geology, 1906 Volume 316 - Softcover
This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1907 Excerpt: ...and apparently of very good quality. A sandstone dike was observed in the mine cutting the coal bed, nearly perpendicular to the bedding. Similar dikes were also noted in the Coryell mine on Grand River. A sample representing the upper 7 feet 6 inches of the bed was taken within 6 feet of the face of the mine. The entry runs down a slope on the dip for 25 feet, and a drift then swings to the left at a lighter pitch, turning up grade slightly in the last 25 feet of a total length of about 125 feet. Tlu's bed is probably about 100 feet above the "white rock," with another heavy sandstone stratum some 50 feet above the coal. Another coal bed is prospected in a small tributary gulch north of the mine, its position being stratigraphically between the Shafer bed and the "white rock." There has been much burning of coal along the outcrops in the vicinity of the Shafer mine and above the "white rock," and there are doubtless a number of other valuable coal beds in this locality. A few small coals were noted occurring stratigraphically below the "white rock." Many outcrops of coal and much baked rock indicating the presence of other beds are to be seen along the valley of Milk Creek through its entire course between the Shafer and Wilson entries, but at no place are any of these beds known to have been opened so as to show the value of the coals. No. 19. J. F. Wilson mine, Rio Blanco County.--Several prospect drifts have been opened at the upper end of Milk Creek canyon in the coal field, 2 or 3 miles below the Thornburg battle ground. Of these the only one that was in condition for sampling was an entry on the property of J. F. Wilson, of Thornburg, in the NW. 1 SE. J sec. 29, T. 3 X., R. 92 W. Three openings have been made c...
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- PublisherRarebooksclub.com
- Publication date2012
- ISBN 10 1130062155
- ISBN 13 9781130062151
- BindingPaperback
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