File:Transactions (1871) (14755934956).jpg

Identifier: transactionsmining47amer (find matches)
Title: Transactions
Year: 1871 (1870s)
Authors: American Institute of Mining, Metallurgical, and Petroleum Engineers
Subjects: Mineral industries
Publisher: New York (etc.)
Contributing Library: Gerstein - University of Toronto
Digitizing Sponsor: University of Toronto

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rea. I draw the comparison atthis point to emphasize certain ideas I shall advance later as to itsmode of formation and origin. The next determination of the bed was made by me in the summerof 1904 near Richs Hot Springs in Section 13, T. 15 S., R. 44 E.,B. M. Fig. 6 is a general cross-section at this point. Again we find the strata in an inverted position, a point I will takeup after the description of several further deposits. As will be seenfrom the detailed section, the workable bed is slightly different fromthat at Montpelier and the richest bed yet found in the field occursas a separate one, 18 to 22 in. in width, composed of hard blackoolitic phosphate with a layer of curious saucer or disk shaped con-cretions, all high-grade phosphate. The formation has been traced through Sections 13, 12 and 1, T.15 S., R, 45 E., and Sections 36 and 25, T. 14 S., R. 45 E., BoiseMeridian, outcropping nearly north and south, with a dip to the west 202 A NEW PHOSPHATE FIELD IN THE UNITED STATES.
Text Appearing After Image:
© H-4 X- B 55O i-c A NEW PHOSPHATE FIELD IN THE UNITED STATES. 203 of 45° to 70°. The black chert bed forms a prominent feature,standing up like a dike for 3 miles, Fig. 7. At the north end in Section 25 the following appears to be thesection, beginning at the bottom, geologically, on the east side: Cherty lime bed 100 + ft. Lime 9 in. Nodular phosphate 2 in. Lime 15 ft. Concretionary oolitic phosphate 15 in. Lime with thin bands of oolitic phosphate 4 ft. 3 in. Gray oolitic phosphate 4 ft. 6 in. Gray oolitic phosphate 3 ft. 6 in. Parting shale 15 in. Oolitic phosphate 2 ft. 6 in. Black carbonaceous shales 8 -f- ft. Bone Phosphate.Per Cent. .00 62.40 72.80 59.2550.75

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