470 



Report of the State Geologist. 



It is three to four inches wide and runs N. 70° E. Several shafts were 

 sunk, and one was carried down 400 feet. The surface rock is Shawangunk 

 grit, but the vein no doubt reaches the conglomerate.* Crushers and jigs 

 were used to concentrate the ore and separate the sphalerite. The mine has 

 been abandoned for fifteen years. 



Building Stone. The most important quarries are in the granite of 

 Mounts Adam and Eve, and Pochuck mountain, all in Warwick township. 



The Adam and Eve quarries are in a coarse-grained granite, but those on 

 Mount Adam have been little worked on account of the variable character 

 of the granite which is cut by numerous irregular pegmatite veins. The 

 Mount Eve quarry, however is worked by the Mount Eve Granite Co. The 

 granite of Pochuck mountain is coarse grained and lighter colored than that 

 of the two preceding quarries. The quarry has been in operation for about 

 five years. It is situated about one-third the distance up the mountain. The 

 owner is Mr. Hinchcliffe, of Paterson, N. J. Large dimension blocks are 

 obtained from this quarry, and most of them are sent to Orange, N. J. The 

 limestone of Mount Lookout has been used to a limited extent for building 

 purposes. It has been put in the Presbyterian, Methodist and Roman 

 Catholic churches at Goshen.f 



The Shawangunk grit has been used by the Erie railroad for abutments. 



Flagstones. The Hamilton and Chemung flaggy sandstones have been 

 utilized to a small extent for paving, the former being obtained from Skunne- 

 munk mountain in Monroe township, and the latter from the western part of 

 Deer Park township. 



Those on Skunnemunk mountain are the Davidson quarries below the 

 Seven Springs Mountain house, and farther down the mountain on O. H. 

 Cooley's land, northwest of Monroe. The strata are thin-bedded sandstones 

 of irregular thickness, and are often broken by many joints. Those thus far 

 opened have been of little value on account of the irregular character of 

 the rock. 



In Deer Park township the stone is of similar nature, but slightly 

 I. ' iter. Many openings have been made and a few of these are still operated 

 at times to supply the local demand. The more important ones are those of 

 Mr. Myers and the Jackson Bros., west of Rose Point, and Robert Coulter's, 

 north of Sparrowbush. 



Ikon Ores. There are many small and a few large deposits of iron ore 

 in the Highland region of Orange county, and in former years there were - 



* Report (j Pennsylvania (Jcological Survey, p. 161. 

 t Bulletin New York State Museum, Vol. II, No. 10. 



