QUARRIES IN HANCOCK COUNTY. 87 
engine, 1 locomotive crane, 1 compressor, 4 steam drills, 3 pneumatic 
plug drills, 2 surfacers, and 2 pumps. 
Transportation is effected by a cable road 1,400 feet long from the 
main quarry to the cutting shed and by locomotive and track, 650 feet 
more, from shed to dock. 
The product is used for buildings. Specimen buildings made of 
this granite are the New York Stock Exchange, Lying-in Hospital, 
Manhattan Trust Building, and Grand Union Hotel, Forty-second 
street, New York, the General Thomas monument, and the trimmings 
to the Bureau of Engraving and Printing, Washington, D. C. ; the 
League Island dry dock, and the post-office at Harrisburg, Pa. Pav- 
ing blocks are a by-product. 
The Chase Quarries {monumental granite) are in the town of Blue- 
hill. About 350 feet east of the upper opening of the Chase quar- 
ries is an area not less than 200 feet square, of a medium bluish-gray 
fine-textured, porphyritic biotite-muscovite granite (specimen 31), a). 
The particles range in general size from 0.07 to 1.1 mm. in diameter, 
averaging about 0.37 mm. The isolated feldspars n easure up to one- 
fourth inch across. The minerals, arranged in descending order of 
abundance, arc potash feldspar (orthoclase and microcline), smoky 
quartz, soda-lime feldspar (oligoclase), black mica (biotite), and 
white mica (muscovite), with accessory magnetite. The feldspars are 
bluish gray. They have considerable intergrown quartz and the rock 
is generally harder than the adjacent granite, which it probably trav- 
erses as a large dike. It has been quarried occasionally by the com- 
pany for local monumental use. 
Tlte Collins Granite Company's quarry, in the town of Bluehill. 
three-fourth mile east of East Bluehill, has not been operated since 
1888 or 1889. 
The granite (specimen 40, a) is a biotite granite of medium-gray 
shade and porphyritic fexture, with feldspar crystals up to one-half 
inch in length, in a fine-textured matrix in which many particles 
measure clown to 0.05 to 0.25 mm. The minerals, in descending order 
of abundance, are potash feldspar (microcline and orthoclase), smoky 
quartz, soda-lime feldspar (oligoclase), generally altered to kaolin 
and a white mica, and black mica (biotite), with a very little 
muscovite. 
The quarry is 150 by 60 feet and from 15 to 30 feet deep. 
Rock structure: The sheets lie flat and are up to 10 feet thick. 
The joints strike N. 5° E. and N. 00° W., with steep or vertical dip. 
The first set is spaced 20 feet and the other forms a heading. 
Transportation : The stone was carted two-fifths mile to the cutting 
buildings and dock. 
Part of the Pittsburg, Pa., post-office was built of material from 
this quarry. 
