ANALYTICAL KEY. 



XIX 



FLINT, 327, 747, 1081, 1277, 1391. 



FORELLENSTEIN, 513, 514, 093, 810. 



GABBRO, analyses, 1, G95, 781, 857G, 989G. 

 contact with granite, 46, 511. 

 globular weathering, ID. 

 granulitic, 122, 131, 677, 698, 767, 777, 982, 857G 



857(a)G. 



porphyritic, 284, 777. 

 saussuritized, 1686. 

 sheared, 1687. 

 with bastite. 1710. 

 " biotite, 772, 954, 1344, 1678. 

 " diallage, 989G. 

 " enstatite. 715. 

 " fayalite, 1829. 



hornblende, 1, 41, 263, 300, 652, 1689, L71.0. 

 hypersthene, 692, 1037, 1710, 178E. 

 much magnetite, 695, 703, 1041, 1330. 

 tnicropegmatite, 672, 688. 

 ' olivine, 258, 291, 512, 691, 787, 954. 

 " orthoclase, 1, 1A, 5, 225, 1792, 1797. 

 " (juartz, 99, 300, 531, 648, 781, 225:!. 

 " secondary minerals, 854 (a)G. 

 transition from muscovadyte, 2201-2203. 



GLASS, in basalt, 52, 1888. 

 in labradorite, 1. 

 " tuff, 7B, 17, 1832. 

 " zirkelyte, 2067. 



GNEISS, 991, 1416. 

 dioritic, 945. 

 granitic, 946. 

 with biotite, 804, 1777. 



; cordierite, 1042, 1090, 1092, 1805. 

 " hypersthene, 606, 1042. 



GKAMTE, 1044, 1436. 



analyses, IB, 74, 124, 134, 292, 317, 520, 730, 801, 



803, 806, 835, 1094, 1105, 86G, 551G, 686G. 

 breccia, 958. 



contact with gabbro, 46 ', 511. 

 " mica schist, 923. 

 decayed, 319, 320, 385H. 



gradation to from arkose, 344, 923, 994, 995, 2265. 

 conglomerate, 2189, 2245, 



2266, 593G. 



graywacke, 341, 2184, 2244, 



2245, 2264, 2269,383G, 386G, 



407G, 8H, 389H. 



porphyrel, 1061, 1062, 1769, 



2189,2266,2268,551G,776G. 



porphyry, 1061, 1094, 776G- 



777(a)G. 

 quartzyte, 609, 784, 1724, W39, 



1840, 1852-1854, 436H. 

 schist, 1046, 1051, 1052, 1092, 



1104. 



granophyric, 526, 619. 

 graphic, 1891. . 



porphyritic, 619, 953, 2189, 2266. 

 recomposed, 322, 2031, 2032. 

 recrystallized debris, 2239, 2248, 2251, 2263 2"04 

 385H. 



soda granite, 551 G. 



see under esterellyte. 

 with anorthoclase, IB, 74. 



' ; augite, 435, 043, 667, 668, 674, 774, 776, 839, 

 2194, 522G, 551G. 



" biotite, 292, 771, 801. 



" chlorite, 305, 730. 



" fluorite, 2046. 



" hornblende, IB, 3, 675, 728, 801. 



" microcline,' 124. 



" muscovite, 22<i3. 



" radiating structure, 132A. 



GRANOPHYRE, 686, 2064. 

 GKANULYTE, 880. 



GRAYWACKE, 391, 450, I5S, 510. 



approaching quartz -porphyry, 2232. 



breccia, 39. 



gradation to from granite, 341, 2184, 2244, 2245 



2204, 2208, 383G, 386G, 407G, 8H, 389H. 

 Grand Portage, 2071. 

 granitized, 604G, 605G. 

 jaspilitic, 2120. 



matrix of altered conglomerate, 739G. 

 metamorphosed, 003G. 

 quartz-porphyry debris, 383, 2016. 

 sheared, 2H. 

 slaty, 712. 



regenerated, 385G, 389H. 

 subcrystalline, 385G, 407G, 389H. 

 tuff, 2184. 

 with pyrite. 473. 

 " sericite, 2H, 8H. 



GREENSAND, 39S, 538, 55S. 



GREENSTONE, 761, 765, 997, 998, 999, 1011 1018 1023 



1915. 



altered diabase, 1011, 94W. 

 amphibolyte, 731. 

 pebbly, 889, 1077. 

 regenerated, 1780. 

 transition to muscovadyte, 982-984 1778 1780 



1781. 



tuff, 355, 356, 1002. 

 with epidote, 1915, 2177, 2231. 

 " hornblende growths, 1790. 



GBEENWACKE, 868, 868A, 1014, 1367, 1406, 1421 1424 



1444. 



conglomeratic, 1404, 1409. 

 pebbly tuff, 1419. 

 regenerated, 1396. 

 tuff, 1967, 2175. 



GRIT, 741, 1353. 



Taylor's Palls, 2129-2134. 



HOKNFELS, 1708. 



IRON ORE, pisoilitie, 2135, 5i:!0. 

 JASPER, red, 2279. 



JASPILYTE, 866, 867, 1547, 1559. 

 fiery red, 2279. 

 greenish, 1571. 

 in granite, 2048. 

 interbanded with argillyte, 2274. 



