QUARRIES IN WASHINGTON COUNTY. 165 
50 by 25 feet and from 10 to 20 feet in depth. The sheets, from 5 to 
7 feet thick, are horizontal or dip south at a small angle. Joints, 
striking N. 25° E. and dipping 70° NNW., recur at intervals of 10 
to 22 feet and form headings on the north and south sides of the 
quarry. Another set, striking N. 40° W., dips 65° W., forms a head- 
ing on the east side and recurs in middle of quarry. The 22-foot 
column referred to under " product " came from a G foot 6 inch sheet 
between the first set of joints. The heading of that set on the north 
is about 6 feet thick and includes a bed of clayey sand 8 inches thick. 
It has three sets of subjoints, one striking N. 40° E. and dipping 55° 
SE., spaced 2 to 12 inches; another striking N. 50° TV., vertical, and 
spaced 6 inches to 2 feet, and another striking N. 00° E., vertical, and 
spaced 4 to 12 inches. The rock has no rift. The weathering of this 
granite has been referred to on page 55. 
The plant consists of a derrick. 
Transportation is by cartage of 3 miles to Redbeach, on the St. 
Croix River. 
The product is used for ornamental and monumental work. Speci- 
mens: Four fluted columns 22 feet by 3 feet, for the court-house at 
Marquette, Mich. 
Mingo, Bailey <& Compamfs red-granite quarry is in the town of 
Calais, \\ miles north-northwest of Redbeach. Operator, Mingo, 
Bailey & Co., Redbeach, Me. 
The granite (specimen 102, b) is a biotite granite of dark-reddish 
color speckled with pale greenish and of medium even-grained tex- 
ture, with feldspars up to two-fifths inch and sparse biotite under 
one-tenth inch. It consists, in descending order of abundance, of a 
dark-pinkish potash feldspar (orthoclase), very smoky quartz, a 
pale yellowish-greenish soda-lime feldspar (oligoclase) considerably 
altered to a white mica, black mica (biotite), and accessory mag- 
netite and zircon. The rock takes a high polish that exhibits marked 
contrasts between the two feldspars and the smoky quartz. The 
smallness and sparseness of the biotite scales favor the durability of 
the polish. The stone is of a lighter red than that of the Shattuck 
Mountain quarry, but is darker than that of the Maine Red Granite 
Company's " old quarry. 5 ' 
The quarry is 25 feet square by 8 feet deep, and is without ma- 
chinery. 
The company has at its cutting shed 1 derrick, 1 engine, and 1 
polisher. 
Transportation is had by cartage 1-J miles to wharf at Redbeach. 
The product is used entirely for monuments. 
The Maine Red Granite Company^ red-granite quarry is in the 
town of Calais, three-fourths mile west of Redbeach. Operator, 
Maine Red Granite Company; office, Redbeach, Me. 
