146 THE GRANITES OF MAINE. 
The Roy quarry is in the town of Oxford, three-fourth mile from 
Oxford village. Operator, Elie Roy; office, 94 Chestnut street, Lewis- 
ton, Me. 
The granite (specimen 121, a) is a muscovite-biotite granite of 
medium cream-gray color and of medium (inclining to coarse) even- 
grained texture, with feldspars up to four-tenths inch in diameter. 
It consists, in approximate descending order of abundance, of a 
cream-colored potash feldspar (orthoclase and microcline), smoky 
quartz, cream-colored soda-lime feldspar (oligoclase), white mica 
(muscovite), and black mica (biotite), together with accessory ape- 3 
tite. Some of the joint planes are coated with coarse fibrous musco-J 
vite in parallel arrangement. 
This quarry, opened in L898, covers about 5 acres and has a working 
face 40 feet deep. It is worked only occasionally. The product is 
used for rough. foundations and also for trimmings. The trimmings 
on the Catholic Church al Berlin, Me., and the McGillicuddy Block 
at Lewiston are of this granite. 
The Bryant Pond quarry is in the town of Woodstock, one-half mile 
south of Bryant Pond station, on east side of the Grand Trunk Kail- 
way. Operator. Grand Trunk Railway: address, Master of Bridges 
and Buildings, Grand Trunk Railway, Montreal. Canada. 
The rock (specimen 122, a) is a quartz diorite with conspicuous 
black particles on a more bluish-white rather than a yellowish-white 
ground, and of medium even-grained texture and flow structure, with 
feldspars and black minerals up to three-tenths inch in diameter 
(rarely four-tenths). It consists, in descending order of abundance, 
of white translucent soda-lime feldspar (oligoclase to oligoclasej 
andesine), clear quartz, black mica (biotite), and black hornblende, 
together with accessory garnet, titanite, zircon, apatite, and a little 
secondary epidote. Some of the feldspars are partially altered to a 
white mica and some have borders that are radially intergrown with 
quartz. The clearness of the quartz and the translucent whiteness of 
the feldspar result in the apparent merging of the two minerals, and 
as the biotite and hornblende are both black the only contrast in the 
lock is that between black and white. There is a marked contrast 
between the hammered and rough surface, which is attributable to 
the presence of soda-lime feldspar alone. (See p. 59.) The flow 
structure, where marked, give- the rock ;i gneissoid aspect. 
The quarry, opened about L864, is L50 feet from north to south by 
250 feet from east to west and from 10 to 50 feet deep. It is on the 
.west side of a north-south ridge. There is no drainage problem. The 
-tripping consists of 5 to L2 feet of bowlder drift. 
a Michel Levy's "structure verrniculee : Bull. Carte geol. de France, No. ."><*>, vol. 5. 
1893-4, pp. 27-28, fig. 5. 
