REPORT OF THE DIRECTOR AND STATE GEOLOGIST 1900 rl53 



It has, however, been used to a considerable extent for railroad 

 l)allast. 



Hastings, Westchester co. Lefurgifs quarry (9). Owned by 



Lefurgy; operated under lease by William Nichols jr. 



Known at one time as Munson's quarry. Situated about half 

 -a mile west of Mt Hope station, on the western side of the 

 •gneiss ridge. It is opened for a distance of about 350 feet along 

 the strike, and is about 100 feet wide. The west wall is 30 

 feet high at its northern end, running down to near ground level 

 at its southern. The east wall is about 100 feet high at its 

 northern, and 20 feet at its southern end. The floor of the 

 quarry is at present only a few feet below ground level, though 

 it was at one time worked 10 feet or more below, this low cut 

 having been subsequently refilled. The entrance to the quarry 

 is at the south end where a road leads out to the main road 

 to Hastings. 



The west wall shows biotite schist and much crumpled gneiss, 

 and has been practically untouched since the opening of the 

 <iuarry, all the development having taken place toward the 

 east and north. The northern face shows a good quality of 

 light gray or bluish gneiss, typical Fordham, a thin section of 

 which is shown on pi. 45. In it are two seams 2 to 3 feet wide, 

 of hornblende-biotite gneiss, regularly laminated, and of rather 

 good grade. They would certainly furnish attractive cut stone. 

 The east face is now beginning to cut a crumpled area, con- 

 taining frequent interbeddings of a rock composed of pink 

 feldspar, a silvery mica, and some garnets. For this reason the 

 quarry has probably reached its extreme eastern development, 

 most of the stone now being taken from the north face. The 

 pink intrusive mentioned seems to be usually accompanied by 

 a w^alling, 2 inches or so thick, of biotite schist. Near it quartz 

 lenses and stringers are common, and are also usually walled 

 by biotite schist. Strike and dip average n. 24° e., 71° e. 



Two derricks (horse) are in place. There is usually little 

 trouble from water, though in certain seams enough has 

 been encountered to embarrass the blasting (black powder). 



