600 



INDEX. 



Page. 



Xegaimee Ibniiiition relations to AJibik quartzite. . . 289, 



292«-293, 298-299, 333-334, 386 



relations to Clarksburg scries 461 



relations to Goodrich quartzite 377- 



378, 382, 38-4, 410-411, 425, 427, 428, 430, 433 



relations to Islipeniing 33t, 335, 420, 437, 439 



relations to Siamo slate. . 321-322, 325, 327, 333-334, 378-379 

 (See Iron-bearing formation.) 



Negaunee jaspilite 322, 421, 429, 437 



contact with Goodrich qnartzite, figures of 335 



in Lake Superior mine, plate of 338 



relations to Goodrich quartzite 335, 383 



New York and Lake Superior Mining Company 22 



New York mine 73.94 



Newberry, J. S., on character and origin of ores 61-62 



referred to 71 



Norian series 129 



Nonpareil mine 324,327 



North Champion mine 454 



North shore of Lake Huron, Huronian of 574 



North shore of Lake Superior 537 



Northern Complex . . 192. 223. 225, 236, 295, 296, 439, 554, 558, 561 



and Southern Complex, comparison of 192, 218-219 



comparison of rocks in 188-190 



constitution of 150-151 



described 150-190 



intrusives in 178-186 



mapping of 151 



origin of rocks in , 190 



relations between members of 151 



{See Archean, BasementComples.) 



Norway 576 



Novaculite 11,67,254, 



259, 260, 269, 271, 274, 275, 277, 281, 304, 306, 309, 455 



associated with diorite-schist 86 



described 267 



of conglomerate 424 



Novaculite-breccia 273 



Novaculite-slate 263 



O. 



Old Red sandstone 8, 9 



Olivine of diabase 179 



of olivine-diabase 521 



of peridotito 185 



of quartz-diabase 520 



Olivine-diabase 507, 520-521, 525 



Omimi bluffs 234,238,253 



Omimi conglomerate described 235 



Oolitic structure in quartz 531 



Oothout, referred to 94 



Original Huronian of Canada, correlated with Algon- 



kian of Marquette district 3 



Orthoclase, crystals in hematite 97 



of hi otite- granite 172, 173, 174 



of biotite-schist 196, 197-198, 199-200 



of conglomerate 442 



of granite 526, 533 



of gueissoid granite 171 



of mica-gneiss 459 



of mica-schist 443 



of muscovite -granite 175 



of recom posed ore 438 



O verfolding 313, 569 



Overthrust fault in Siamo slate, plate of 280 



Osann, referred to. 

 Ottrelite-schist 



Page. 



Paint-rock 131,392,395,399,487,506,510,511 



Paleozoic 134 



Paleozoic rocks of Upper Peninsula 60 



Paleozoic shales of Appalachians 566 



Palmer 3,31, 



138, 221, 282, 330, 332, 333, 336, 406, 408, 

 409, 410, 411, 412, 429, 430, 431, 432, 564 



Palmer gneiss 194,219,299,312,512,058 



analysis of 217 



described 211-218 



dikes in 212-213 



mapping of 213 



origin of 210, 212, 213-214, 216, 218, 219 



relations to adjacent formations 211-213 



relations to Ajibik quartzite 311 



Parallel arrangement of feldspar grains 228 



of griinerite blades 387 



of mica flakes 433, 449, 458-459, 527, 529 



of quartz grains 228, 



290, 301, 368, 382, 435, 449, 451, 458-459 



Pascoe shaft 540 



Patton, H. B., on macroscopic features of Marquette 



rodks 140 



referred to 7, 512 



Payne, C. Q., on deposition of iron ores 94-95 



Peck, Samuel, referred to 13 



Pegmatite of conglomerate 264 



Pegmatization of gneiss, described 447, 448 



of mica-schist 456 



Penokee district 67, 



100, 104, 105, 107, 108, 132, 340, 370, 373, 400, 401, 457 



iron ores and jaspers of 102-103 



Penokee range 395 



Penokee series 366, 368, 449 



equivalency with Marquette series 67-68 



Penokee-Gogebic. (^^e Penokee.) 



Peridotite 151, 183- 186, 313 



age of 128,184,185,188 



analyses of 186 



alteratioQ of 186 



at Presque Isle 76-77, 99-100, 103, 128, 183-184 



near Ishpeming 77, 99-100, 128, 184-186 



of Opin area 184-186 



relations to surrounding rocks 184 



(See Dolomite and Serpentine.) 

 Phenix mine. (See Daliba mine.) 



Phyllite-schist 148 



Phosphoric acid in iron ore 80 



Picnic Islands 140 



Picrite 183 



Pirsson, referred to 467 



Pitch of Republic trough 539 



Pittsburg 129 



Pittsburg and Lake Superior mine 73 



Plagioclase, alteration of 496 



of biotite-granite I 172, 174 



of biotite-schist 196, 197 



of conglomerate 442 



of diabase 179 



of diorite 181 



of granite 526 



of greenstone 465, 466, 492, 493, 494, 496, 505. 516, 538 



