Bulletin - United States Geological Survey, Issue 220

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Page 18 - ELPASOLITE. From St. Peters Dome, Pikes Peak district, Colorado. Described as a new species by Cross and Hillebrand in Bulletin 20. Incomplete analysis on insufficient material, by WF Hillebrand. The fluorine was deduced by calculation on the assumption that the metals are fully combined with it. Al 11.32 Ca _ .72 Mg .-.. .22 К 28.94 Na_.-_ , 9.90 F .. . . . 46.98 98.08 GEARKSUTITE.
Page 10 - Described as a new species by WH Melville, Am. Jour. Sci., 3d ser., vol. 43, 1892, p. 509. Waterworn pebbles. Sp. gr., 6.204. The silicate admixture, including the water, amounts to 13.38 per cent, of which 12.88 per cent, soluble in hydrochloric acid, is serpentine. The insoluble portion may be bronzite. Analyses of the silicates are as follows...
Page 74 - Analysis by EA Schneider. The loss is due to undetermined volatile matter. C. Brown mica from the granite of the Yosemite Valley, California. Analysis by William Valentine. Described by Turner, Am. Jour. Sci., 4th ser., vol. 7, p. 294.
Page 111 - Bulls. 78 and 90. In the original publications the gaseous constituent of uraninite was supposed to be nitrogen, as indeed it was in part. The discovery of helium, however, has shed new light upon the subject, and the analyses have been corrected accordingly. A, B, C, D, E. Crystallized uraninite from Bale's quarry, Glastonbury, Connecticut.

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