624 THE GEOLOGY OP MINNESOTA. 



[Syenyte. Granite. Gneiss. Greenstone. 



No. 992. SYENYTE. (Epidotic. ) 



N. W. y sec. 27, T. 63-10 W. ; north shore of the Kawishiwi river and a little east of No. 990. 

 Ref. Annual Report, xv, pages 352, 392; Bulletin vi, pages 68, 421. 



Meg. A medium-grained, reddish, decayed syenyte. 



Mic. The section shows two chief minerals, feldspar and epidote. There is also 

 some chlorite and some quartz. The rock is considerably altered. 

 One section. 



Age. Archean. u. s. G. 



No. 993. SYENYTE. 



N. W. % sec. 27, T. 63-10 W.; near No. 992. 



Ref. Annual Report, xv, pages 353, 354, 392, 393; Bulletin vi, pages 68, 421. 



Meg. A rather coarse-grained, reddish syenyte. 



Mic. The section is composed largely of considerably altered feldspar. Other 

 minerals are chlorite, quartz, magnetite, muscovite and tourmaline. 



One section. 



Age. Archean. u. s. G. 



Ji't'inark. The section was taken from a slickensided and crushed mass, and, 

 although the grains may have had an interlocking structure originally, they are 

 now so crushed and decayed, though re-cemented by quartz, that they do not 

 show it. N. H. w. 



No. 994. GRANITE. 



N. E. } N. W. % sec. 26, T. 63-10 W. ; south shore of the Kawishiwi river. 



Ref. Annual Report, xv, pages 353, 393; Annual Report, xvii, pages 195, 207; Bulletin vi, pages 68, 421. 



Meg. A fine-grained, reddish granite. 



Mic. A granitoid rock whose chief minerals are feldspar (often considerably 

 altered), quartz, epidote, chlorite, magnetite and pyrite. Two sections. 



Age. Archean. u. s. G. 



No. 995. GNEISS. ( Hwnblendic. ) 



Rapids in the Kawishiwi river; north part of sec. 8, T. 63-10 W. 

 Ref. Annual Report, xv, pages 353, 393; Bulletin vi, pages 68, 421. 



Meg. A rather fine-grained, gray, granitoid rock. 



Mic. A granitoid rock composed chiefly of feldspar (often considerably altered), 

 quartz and hornblende. Epidote, chlorite, magnetite and apatite are present. 

 One section. 



Age. Archean. u. s. G. 



No. 996. GREENSTONE. 



N. W. % sec - 21, T. 63-10 W.; from a hill range just north of the foot of a portage along the Kawishiwi 

 river. 



Ref. Annual Report, xv, pages 346, 393. 



