140 NEW YORK STATE MUSEUM 



but contains some biotite. It has a coarse texture, as seen at the 

 quarries, and in color is a medium gray with bhiish or greenish 

 tints which arise from the variable appearance of the feldspar 

 crystals. These measure from 5 to 15 mm in diameter. Though 

 generally massive, the granite shows local phases characterized by a 

 parallel or gneissic arrangement of the constituents, as is well ex- 

 hibited on the north side of Mount Eve. Pegmatitic variations are 

 rather frequent, especially on Mount Adam, where also the normal, 

 coarse, grayish granite gives way in places to a finer grained and 

 much darker dioritic rock. This lack of uniformity constitutes a 

 serious drawback to the opening of quarries in many parts of the 

 exposures. 



The quarry localities are on the north slope of Mount Adam and 

 the western slope of Mount Eve. The Mount Adam quarry, 

 according to Smock, was opened in 1889 by the Amount Adam 

 Granite Co. of Middletown. It has long since been abandoned. 

 The workings have a total length of 250 feet arid a face from 20 to 

 30 feet high. There are two grades of rock exposed, the one con- 

 sisting of the usual coarse hornblende granite, and the other of 

 finer grain with little hornblende, forming streaks and patches in 

 the first. Feldspathic and pegmatitic seams are present. The joint- 

 ing is divided into three systems. Two strike north-south and dip 

 about 70° in opposite directions, the third strikes N. 45° E. and 

 dips 55° southeast. No equipment is found on the property. The 

 quarry lies about one-half of a mile north of the railroad to which 

 the stone was formerly hauled over a private road. 



The Mount Eve quarries were opened about 1890, at the same 

 time as those on Pochuck mountain and by the same company. 

 They are situated a little way up the western slope, in the notch 

 between the two knobs. They have likewise been abandoned and 

 the equipment removed from the property. The granite is less 

 broken than on Mount Adam and shows riiore uniformity of 

 character. It was worked quite extensively for dimension stone 

 which was shipped to Orange, N. J., and other places. The work- 

 ings at present are so heavily overgrown with bushes as scarcely 

 to permit inspection. The nearest point of shipment on the rail- 

 road is about i^j miles distant. 



Microscopic characters. The petrography of the granite is 

 described in detail in the paper by Kemp and HoUick, already 

 cited, from which the following information is abstracted. The 

 principal dark mineral is hornblende, but there is more or less biotite 



