go NEW YORK STATE MUSEUM 
There is a little pyrite in evidence, mainly collected along stringers 
and occasional knots of silicates. The marble seems to be delimited 
on the west by a hard white quartzite which forms the higher part 
of the ridge and is exposed 75 feet west of the quarry opening. 
The strike of the marble beds is a little east of north. The quartz- 
ite intervenes between these quarries and that of the Dover White 
Marble Co. 
At the cutting works at Wingdale, the company has a complete 
equipment for cutting, planing and polishing its product. 
The Dover White Marble Company. The Dover White Mar-_ 
ble Co. has a quarry and mill on the east bank of Tenmile creek 
about one and one-half miles northwest of the quarries of the 
South Dover Company. The quarry is about 100 feet square and 
20 feet deep on the west or downhill side and 4o feet on the east 
side. The marble is rather uneven in appearance, showing small 
bands of gray which are more pronounced in the western section 
and which are regarded as variations of bedding. The-bands are 
of sericitic and quarzitic nature, derived from argillaceous and 
sandy layers included in the limestone. The beds strike N. 10° 
FE. and dip 80° E. They undulate in folds and the siliceous layers 
are often squeezed out into lenses around which the marble has 
flowed under pressure. An imperfect jointing is present along the 
direction of the bedding. Blind checks and seams cause consider- 
able loss in cutting. The grain is finer than that of the South 
Dover product, averaging less than .5 mm. 
The product has been employed mainly for veneer and wains- 
coting. The blocks are sawed across the bedding, or horizontally, 
as they lie in the quarry. The company ceased active work in 
April 1912. 3 
In the southern part of the region in Westchester county and 
the Bronx no systematic quarry operations have been carried on 
in several years. Some of the quarries of this section, like those 
at Tremont, Tuckahoe and Pleasantville, were operated at one 
time on a large scale for architectural stone. The marble makes a 
good appearance, being mostly clear white, but is very coarse 
grained. On that account it is not so suitable for interior or pol- 
ished work as the marble from the more northerly quarries. The 
only use that is made of the stone at present is for lime or crushed 
stone. 
At the Tuckahoe quarries, formerly worked by Norcross Bros., 
the Emerson-Norris Co., of New York, has erected a plant for 
