ROCK FORMATIONS ON FRYER HILL. 453 



* 



have removed an enormous quantity of ore from the crest of the fold, and 

 doubtless from the surface of many of the existing ore bodies. As a rule 

 the lower iron bodies are comparatively barren. On the other hand, that 

 very rich portion of the Lee body which extends into the Matchless and 

 Hibernia grounds is immediately above the Parting Quartzite, or represents 

 the very bottom of the Blue Limestone. A small body of ore was ob- 

 tained from the lower bed of the Amie mine, which yielded seventy ounces 

 to the ton, and from the workings of the Vulture No. 2 some pay ore was 

 obtained in the same horizon. 



The dip of the ore horizon is generally quite low, in the New Discovery 

 not more than 5 and in the Little Pittsburgh and Little Chief the southern 

 portion is quite horizontal. In the Chrysolite it dips from 10 to 11, 

 whereas in the Amie the dip is 20 to the northwest. On the east side of 

 the anticlinal fold the dip is uniformly steeper, so that from the Lee to the 

 Denver City the outcrop is relatively narrower. 



Parting Quartzite. The Parting Quartzite, where observed, is not over ten 

 to fifteen feet in thickness and, as contrasted with the upper quartzite, very 

 much decomposed, being generally disintegrated to a fine white sand and 

 in every case very much iron-stained ; it also contains considerable mechan- 

 ical admixture of clay from the porphyry, so that it is not always possible 

 to distinguish it with certainty from a highly decomposed White Porphyry 

 from which the earthy bases have been largely removed. 



white Limestone. The White Limestone has been cut by several shafts 

 on Fryer Hill. In its most characteristic form it is found in the Amie No. 

 2, where it was struck at a depth of 273 feet and has its peculiar light-drab 

 color, compact texture, and the characteristic segregations of white chalce- 

 dony or chert. It is also found in the lower levels of the Dunkin and Climax 

 mines, at their southern extremities, and in the Eudoraand Pittsburgh shafts, 

 toward Little Stray Horse gulch, where it comes up to the Wash; likewise 

 in Chrysolite No. 6. 



Lower Quartzite. This quartzite has been cut by various prospect shafts 

 along the western borders of the hill ; among others, by the Little Eva No. 5, 

 and by the Lida shaft, near Gumming & Finn's smelter, where a small intru- 



