INDEX. 



591 



Greenstone-conglomerate in Northern Complex. 151, 109, 555 

 (See Kitehi scbiata ami conglomerate in Clarks- 

 burg series.) 



Greenstone, schist 10. 40, 75, 120-123, 123-125 



associated with fragmental rocks 4C7, 50-t 



contact with dioritc 75 



in isolated areas 220 



in Northern Complex 151, 



153, 158, 160. 161, 162-167, 171, 189, 192 



analysis of 168 



(See Kitehi schists and Mona schists.) 



in Southern Complex 194, 201, 2a4r-206 



origin of 41,43,58,70,126,146,204^205 



relatious to fragmental series Ill, 121 



relations to granite aud gneiss 105, 111, 122-123 



relations to acid greeuatone 75,147 



{See Green-schist.) 



Greenstone-tuffs in Marquette series 514, 517, 522, 523 



in Northern Complex 151, 152, 154 



(See Clarksburg series, Kitehi schists, Mona 

 schists, Tuff, Tuffaceous greenstone.) 



Greisen at Republic 74, 139, 144 



Grenville series 149 



GresleyjW.S., description of hematite specimen 136 



Gribben mine 89 



Grit 444,453 



Groundmass of conglomerate in Clarksburg series . . 477-478 



of dike greenstone 509 



of Kitehi schists 164, 165-167 



of sheet greenstone 516 



Groth, referred to 177 



Grunerite, alteration of 423, 4:i6 



and hornblende iutergrown 388, 390, 419, 423, 436 



from feldspar 391 



from siderite 342, 419, 423, 455 



included in garnet 387 



included i u quartz 388 



of actinolite and anthophyllite-schist 129 



of biotite-schist 294 



of cherty siderite-slate 367 



of chlorite schist 513 



of Clarksburg sediments 472 



of griinerite-magnetite schist . . . 293, 373, 390, 391, 418, 423 



of griinerite rock, described 387 



of hematite ore 374 



of hornblendic schist 422 



of iron-bearing formation 529, 530, 576 



of jaspilite 376-377 



of magnetite ore 374 



of novaculite 455 



of quartz schist 293 



of quartzite 313 



of siderite-slate 367 



Grunerite-magnetite-rock 388, 422-423, 424 



Griinerite-magnetite-schist 293, 294, 323, 



324, 332, 334, 336. 344, 366, 372, 377, 378, 381, 383, 385, 388, 

 •J89, 396, 405, 408, 417, 421, 424, 434, 436. 461, 539, 565, 572 



analyses of 338 



caugh t in greenstone 571 



plate of 328 



concretionary structure in 373 



described 337-338, 368, 369, 422-423 



development of 369 



dome structure in, plate of 328 



from cherty siderite 337 



from siderite 451 



Griinerite-magnetite-schist from siderite-schist 446 



grading into biotiteslate 384 



grading into ferruginous mica-slate 388 



grading into jaspilite 390 



grading into novaculite-like rock 384 



isoclinal folds in, figure of 384 



of Ishpeming formation, discriminated from 

 griiuerite-magnetite-schist of Negaunec. . . 417, 418, 440 



pebbles in conglomerate 461, 477, 482, 483 



plate of 342. 344 



relations to Clarksburg formation 461 



relatious to intrusive diorite, figures of 386 



relations to, jaspilite 375 



veins in Northern Complex 186. 187 



(See Actinolite-magnetite-schisl.) 



Grunerite-magnetite-slate 380, 381 



Grunerite-rock 388 



Griinerite- schist 137, 317, 513 



Grunerite-slate, alteration of 380 



from siderite slate 454 



Gunpowder Lake 491 



Ilard ores 364 



origin of 131-132,133 



Hard ore jasper 363, 392 



Harlowe mine 85 



Harz, referred to 157 



Hawaiian volcanoes 481 



Hematite 81 , 136, 552 



and magnetite, relations to jasper, quartzite, and 



soaprock, plate of 546 



from magnetite 368,387,423 



from siderite , 325, 340 



micaceous. 



of. 



310 

 97 



11 



of brecciated chert 246 



of brecciated dolomite 250 



of chert and jasper conglomerate 414 



of ferruginous chert 361, 370 



of ferruginous slate 344, 361, 369 



of graywacke 265 



of griinerite-magnetite-schist 342, 368, 378, 418, 424 



of hematite-schist 432 



of iron-bearing formation 293, 294, 530 



of iron ore 364-365,547 



of j aspilite 293, 354, 



356, 358, 360, 363-363, 371, 372, 373, 376, 428 



described 388 



of magnetite-schist 344 



of magnetitic chert 352 



of ore and jasper conglomerate 426 



of recom posed ore 438-439 



of slate 260, 26.1 , 262, 266, 281, 317, 318, 320, 432 



pseudomorphs after siderite 367 



reduction of 405 



(See Iron ore and Iron oxide.) 



Hematite ore 374-375, 549-550 



Hematite-schist ' 434 



Hematitic chert from Negaunee. plate of 348, 350 



Henry Mountain laccolites 572 



Hill, S. "W"., on granite intrusive in slate 40 



referred to 71 



Hillebrand, W. F. , analyses by 185 



