QUAKRIES IN WALDO COUNTY. 157 
cal, with course N. 60°-65° W. Sap is faint, and from 4 to 8 inches 
thick along the sheets. Knots, up to 8 by one-half inch, are rare. 
The plant consists of 5 derricks, 1 hoisting engine, 1 steam drill, 
and 2 pumps. 
Transportation is by cartage 5 miles to electric railroad, then S 
miles to Maine Central Railroad. The quarry is 50 feet above 
Megunticook Lake, and a gravity track could be laid one-third 
mile to the lake, where boats could bring the stone within 2^ miles of 
Camden, on Penobscot Bay, thus reducing the cartage, which at 
present is the chief obstacle. 
The product is used for monuments and buildings to supply local 
demands. Specimen buildings and monuments: The trimmings to 
Carlton Block, in Rockport, Me. 
The Ileal hlaek- granite quarry is in the town of Lincoln, about 2 
miles from bridge over outlet to Tilden Pond, and about 3| miles 
from shore of Penobscot Bay. Operator, A. S. Heal, of Heal & 
Wood ; office, Bridge street, Belfast, Me. 
This rock is an olivine norite of black shade, with glistening sur- 
faces and of medium texture. The polished surfaces show a bril- 
liant dark olive-greenish mineral. Under the microscope this rock 
consists of interlacing slender crystals of a translucent lime-soda 
feldspar (labradorite, with 10 to 14 per cent of lime), the spaces 
between which have been filled with the following minerals, in 
descending order of abundance: Greenish hypersthene (see p. 57), 
black hornblende, greenish olivine, black mica (biotite), and magne- 
tite, with accessory pyrite and secondary chlorite and serpentine. 
The stone takes a brilliant polish and under sunlight shows the green- 
ish hypersthene. The hammered or cut surface is very light. 
The quarry, opened in 1903, measures 30 by 40 feet and about 10 
feet in depth. It is worked only occasionally. There is no machin- 
ery. The stone is now carted 7 miles to Belfast to be cut. It is used 
for dies and tablets for local demand and is admirably adapted for 
these purposes. 
The Bog Hill quarry is in the town of Searsport, on Mount Eph- 
paim (Bog Hill), about 5 miles north-northwest of Searsport village 
and 2 miles east of Swanville. Operator, Herbert Black, North 
earsport. 
The granite (specimen 51, a) is a biotite granite of light-gray 
shade and porphyritic texture, with feldspars up to 1J inches in 
diameter, in a groundmass of medium texture, with biotite scales up 
to one-fifth inch. It consists, in descending order of abundance, 
of a whitish potash feldspar (orthoclase and microcline), smoky 
quartz, whitish soda-lime feldspar (oligoclase), and black mica (bio- 
tite), together with accessory magnetite, titanite, zircon, apatite, and 
secondary chlorite and epidote. The porphyritic orthoclase crystals. 
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