Plate 5 





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Upper figure. Amphibolite zone about 25 feet thick, bordering granite 

 gneiss and cut by sheared dikes of tourmaHne-bearing pegmatite. The 

 amphibolite is a contact rock, but is not garnetiferous. 



One and^ six-tenths miles east-northeast of Eddy. 



Lower figure. Typical garnet gneiss, showing slight admixture of peg- 

 matite which is beginning to inclose a few of the skeletal garnet crystals. 

 About one-fourth natural size. 



Middle limb of sigmoid, about 2.5 miles southwest of Pierrepont. 



