80 NEW YORK STATE MUSEUM 



now know that this ore continues downward lower than was for- 

 merly shown. More recent data also show that in No. 7, rock cuts 

 off the ore on the east, apparently before the upward curve of the 

 ore was found and a fault is suggested. 



In its western prolongation as shown in sections 8-12, Old Bed 

 encounters faults, and an area of broken ground with one or two 

 disconnected masses of iron-stained, apatite-bearing ore called 

 *' Red Ore." The red color is due to the crush and to the conse- 

 quent alteration of some of the minerals. In the slides the color 

 is clearly shown to be caused by red hematite infiltrations into 

 cracks. The source of the iron oxid is without doubt decomposed 

 pyroxene crystals. 



Beyond the " Red Ore " lies the Miller pit, a very large and very 

 interesting ore body, now practically worked out. The Miller is 

 presumably the faulted extension of the Old Bed, which is dropped 

 to the west, but it has in sections 7-10 a very peculiar double char- 

 acter. The separate parts of No. 7 coalesce in Nos. 8 and 9 and 

 part again in No. 10, beyond which to the south the upper one, 

 once the large one, fails entirely. We are confronted with some 

 difficulties in following out the folds in whatever way we may try 

 to explain them. We must consider the Miller as an expanded 

 prolongation of Old Bed before folding ; that is that the Miller was 

 longer north and south, so as to allow for its extended pod in sec- 

 tions 13-18. Probably the under one of the two pods in No. 10 

 was connected with Old Bed and that it was doubled over on itself 

 as shown in Nos. 7 and 8. It must either have been this or else the 

 upper member is the prolongation and the bed was doubled under 

 itself to account for Nos. 7 and 8. Or else the Miller is a forking 

 pod, from a central thickened portion in Nos. 8 and 9, where the 

 two parts coalesce. Any of these three relations is possible, but if 

 we favor folding we can not avoid giving great emphasis to the 

 viscosity or doughlike consistency of the rocks at the time, since 

 in no other way could they possibly have bulged and molded them- 

 selves into these forms. So pronounced is this character that one 

 can not well help giving serious attention to possible convolutions 

 Injja molten but ropy mass. Under the latter assumption we need 

 infer burial in the earth at a less depth in order to make the 

 results possible. 



The following analyses illustrate the composition of the ores 

 from the " 21 " pit. No. 1 was a sample of 65 carloads and No. 2 

 of 35 carloads from the Port Henry Co. 



