INDEX. 



495 



Dunn mine, location of 179, op. 186 



table of sliipraeuts i'rom op. 186 



Dynamic action, (^et' Pressure eftects.) 



Economic ■ products of Hemlock formatiou de- 

 scribed 153-154 



Elevations of Crystal Falls district 30, 31, 332 



Elldalen, Sweden, liiilleliinta of 92 



Ellipsoidal structure in metabasalt described 112-124 



tigureof 112,113,114 i 



plate ot 116,292,298 



Ells, R. W.. on ellipsoidal structure 118.119 I 



EulaiEement of feldspar 144 i 



of quartz 57,85,404-405 ! 



Enstatite of gabbro and uorite 238 I 



Epibasalt, use of term 98 I 



Epidiorite, use of term D7, 222 I 



Epidolerite, use of term 97 ' 



Epidote from biotite 225 | 



from chlorite 132 : 



i'rom feldspar 82,92,111,169,170,201,248,483 I 



from boriiblende... 100,203 j 



included in biotite 225,226 I 



included ni chlorite 248 i 



included in feldspar 

 included in hornblei 



151 



ide. 



included in ilmenite 444 



included iu quartz 47 



including zoisite 445 



of basic dikes 47 



of biotite-scbist 443 



of Bone Lake schist 151 



of cblorite-scbist 442 



of diorite 225 



of greenstone 483, 485, 486 



of metabasalt 101, 102,117,118,127,134 



of ijyroclastics 147 



of spilosite 206 



plate of 302 



of tutf 141 



of Tariolite ^ Ill 



of volcanic conglomerate 143 



Epidote-schist from basic volcanic 152 



of Hemlock formation 442 



Epidote- zoisite— 



from feldspar 42, 99, 127, 192, 224 



from hornblende 237 



including allanite 444 



including sphene 225 



of metabasalt 99, 131, 132 



of araygdules 124 



zonal structure in 101 



Epidotization of metabasalt 117 



Eriksen. E. T., referred to 22 



Erosion of Archean xxiv, 39 



of Cambrian xxiv 



of Huronian xxi, xxii, xxiv 



of Pleistocene xxiv, 29 



Eru])tive breccia formed by intrusion 195 



of Hemlock formation described 1 35, 136 



Escanaba River described 335 



Eutaxitic structure in metabasalt 103 



Exploration for iron ore 12, 73, 330 



in Mansfield slate 73 



of Mansfield ore deposit 67 



Fairchild, C. N., indebtedness to 



Fairbanks, H. W., on ellipsoidal structure 



on gabbros 



on ultrabasic rocks 



Fairbanks mine. (See Lincoln mine.) 



False bedding in Upper Huronian 



Felch Mountain range described 



elevation of - 



• geographical position of 



literature on 



relations to Sturgeon River rocks 462, 



Feldspar, alteration of 42, 127, 170, 192, 201, 



plate of 



altering to albite 



altering to biotite 42,82,89,90,92,150,170, 



altering to calcite 82,90, 



altering to chlorite 82, 99, 111, 



altering to epidote 92, 111, 161, 170, 201, 



altering to epidote-zoisite 42, 99, 127, 



altering to feldspar Ill, 131, 151, 169, 170, 171, 



altering to iron oxide 



altering to mica 



altering to muscovite ... 42, 82, 90, 92, 192, 201, 224, 

 plate of 



altering to paragonite 



altering to quartz 



99, 52, 111,131, 151. 169, 170, 171, 



altering to sericite 52, 89, 99, 101, 111, 127, 



altering to zoisite .^ 



plate of 



cataclastic structure in 



enlargement of 



included in dolomite 



included in hornblende 



plate of 



included in microcline 



included in uralite 



including apatite 



including biotite 



including epidote 



including hornblende 



including iron oxide 



'including muscovite 



including quartz 



including rutilo 



of acid lavas 



of amphibole-peridotite 



of amygdules 



Xdate of 



of basalt, plate of 



of biotite-granite 41,42, 



of biotite-schist 



of Bone Lake schist 



of bronzite-norite-porphyry 



of diorite 



of dolomite 



of gabbro 234, 241, 



of granite 198, 



of graywacke 



of greenstone 



of Groveland formation 



of metabasalt 99, 102, 104, 127, 



of metadolerite 



of micadiorite 



of mica-schist 



375-383 

 472, 473 

 224, 478 

 288 

 151, 201 

 192, 201 

 131, 132 

 131, 201 

 248, 483 

 192, 224 

 201,248 



42,92 



169, 170 



228, 248 



286 



41,42 



42, 



201, 248 



131,477 



191, 193 

 467, 468 

 150, 151 



242, 248 

 388, 464 

 56, 169 



129, 211 

 200, 201 



