^TARRIES IN KNOX COUNTY. 135 
furnished material for the dry dock at Portsmouth, N. H., and the 
Rain Island light-house. In 1905 it was supplying blocks for a pri- 
vate residence at Gladstone, N. Y. 
The Pequoit quarry is in the town of Vinalhaven, 1] miles east- 
northeast of Vinalhaven village, on Vinalhaven Island. Operator. 
Booth Brothers & Hurricane Isle Granite Company, Rockland, Me. 
The granite (specimen 7, a) is a biotite-hornblende granite of 
medium-gray shade and fine even-grained texture, with porphyritic 
feldspars up to one-fourth inch in length. It consists, in descending 
order of abundance, of a whitish, translucent potash feldspar (ortho- 
clase, with a very little microcline), smoky quartz, a whitish soda-lime 
feldspar (oligoclase), black mica (biotite), and dark hornblende, 
together with accessory magnetite, titanite, apatite. The orthoclase 
is here and there intergrown with a plagioclase. The orthoclase is 
in places altered to kaolin and a white mica and includes occasionally 
some carbonate. The porphyritic crystals are orthoclase. 
The quarry, opened in 1887, consists of two openings, each about 
250 feet square and about 10 feet dee]). Drainage is effected by a 
2-inch siphon, 240 feet long. 
Rock structure: The sheets, from 1 to 6 feet thick, dip 10°-15° 
N. 80° W. Vertical joints strike N. 80° W. and N. 5°-10° E. The 
rift is vertical, striking N. 5°-10° E. 
There is no machinery. The product is carted one-third mile to 
the narrows and there shipped. 
The product consists entirely of paving blocks (10 to 14 by 4 to 
5 by G to 7 inches) which -go to New York and Philadelphia. In 
1905 an order Xvas being filled for New Jersey. 
The Duschane Hill quarry, in the town of Vinalhaven, 1^ miles 
east of Vinalhaven village, on Roberts Plarbor. Owned by Bodwell 
Granite Company, but no longer operated. Office, Rockland, Me. 
The granite (specimen 8, a) is a biotite granite of medium buff- 
gray color and of fine to medium porphyritic texture, with most of 
the feldspars about one-fifth inch long, but some one-third or one- 
half inch long. The rock consists, in descending order of abundance, 
of a buff-gray potash feldspar (orthoclase), smoky quartz, a buff- 
gray soda-lime feldspar (oligoclase), and black mica (biotite), to- 
gether with secondary chlorite. The orthoclase is intergrown with 
plagioclase and the oligoclase is partly altered to kaolin and a white 
mica. 
This stone was used for paving blocks. 
The Armbrust quarry is in the town of Vinalhaven, between Car- 
vers Harbor and Indian Creek, south of Vinalhaven village. Opera- 
tor, J. P. Armbrust, Crown Hill Granite Works. Office, Vinalhaven. 
The granite is a biotite granite similar to that of the Sands quarry 
described on page 129. 
