QUARRIES IN HANCOCK COUNTY, 
93 
Rock structure : Sheets from 2 to 8 feet thick dip both east and 
west at 5°-10°. Vertical joints with a N. 25° E. course recur at 
irregular intervals. The rift is horizontal. 
The plant consists of 2 derricks, worked by horses, and a siphon 
pipe. 
Transportation is effected by cartage of a mile to wharf. 
The product consists of curbing, flagging, paving, and random, 
and goes to Boston, New York, and Philadelphia. 
The T. M. Blaisdell quarry is in East Franklin, 1 mile above the 
head of navigation. Address, T. M. Blaisdell, East Franklin. 
The granite (specimen 76, a) is of a darkish medium-gray shade 
and medium even-grained texture, with feldspars up to one-fourth 
inch in length, and consists, in descending order of abundance, of 
Fig. 11. — Structure at T. M. Blaisdell quarry, East Franklin. 
I potash feldspar (microcline and orthoclase), slightly smoky quartz, 
lime-soda feldspar (oligoclase to oligoclase-albite), black mica (bio- 
tite), together with accessory magnetite and zircon. The effect of 
the slightly bluish gray color of the feldspar and the light smoki- 
ness of the quartz is to prevent any contrast of shade between these 
two minerals and also to darken the general color of the stone. 
The quarry, opened about 1875, measures 200 by 300 feet and is of 
varying depth. The working face on the north is 53 feet high. 
Neither drainage nor stripping is required. 
Rock structure : The sheets, from 2 to 13 feet thick, dip 10° NE. 
Owing to compressive strain, on the removal of load in quarry- 
ing, the bottom sheet rises half an inch from the underlying one. 
The joint courses are shown in fig. 11. A forms a heading on the 
northwest and southeast sides. C dips in places 45° N. The rift is 
horizontal and grain vertical, trending northwest-southeast. Sev- 
eral parallel dikes of aplite up to 2 inches thick dip southwest at a 
