rl72 



NEW YORK STATE MUSEUM 



White Plains, Westchester co. A quarry (57) has been opened in 

 the Stockbridge limestone just west of the tracks of the New 

 York and Harlem railroad and about 1 mile north of White 

 Plains. It is operated by James O'Connell. All the rock quar- 

 ried is burned into lime or used as crushed limestone. Views at 

 this quarry are shown on pi. 57 and 58. An analysis of the lime- 

 stone, made by Huntington in 1899 follows: 



SiOs 2.08 



A1203 and Fe203 56 



CaCOs 58.72 



MgCOa 37.79 



(Available CO2 45.57) 



Hastings, Westchester co. At Hastings the old quarry (55) is 

 unworked, and is merely of historic interest. West of the old 

 Croton aqueduct a quarry was opened in a thin bedded and 

 brownish limestone, very micaceous. The product was intended 

 for the asphalt blocks of the Hastings paving co. but proved 

 unsatisfactory. 



Pleasantvilie, Westchester co. Several large quarries (58) in the 

 Stockbridge limestone are located south of Pleasantvilie, near 

 Unionville station. The product has been largely used, both 

 for structural purposes and for burning into lime. The marble 

 from these quarries is coarser grained than that from Tucka- 

 hoe, and lost public favor earlier. The lime quarries and kilns, 

 however, have been worked till lately. Analyses of Pleasant- 

 vilie limestone follow: 



Si O2 .. 

 AI2 O3 . 



Fes O3- 

 CaC03 

 MgCOs 



1 



2 



2.31 



.1 



.49 



.07 



.25 



.16 



59.84 



54.62 



36-8 



45.04 



.29 



54.8 

 43-11 



1 H. Ries, analyst, N. Y. state rnus. 51st an. rep't, p. 466. 



2 " Columbia college," U. S. geol. sur. 16th rep't, pt 3, p. 468. 



3 Wilber, aaalyst, N. Y. state mus. Bui. 10. 



Ossining, Westchester co. Marble was formerly quarried on 

 land belonging to the state near Ossining. The following anal- 



