78 



ECONOMIC GEOLOGY. 



sively. To the east is a larger opening, capable of furnishing obelisks 60 feet long. A 

 large monument has been erected of this granite at Greenville, Penn. There are many 

 of various sizes at Mt. Auburn. A very pretty building, belonging to the Delta Psi 

 Society, is being built of this stone at Hartford, Conn. The joints in this quarry are 

 somewhat irregular. Seams of kaolin clay occasionally occur in them. There are 

 other quarries farther north along the railroad, doing less business than the one de- 

 scribed. 



Siniapee. There is considerable quarrying done at Sunapee Harbor, very near the 

 lake, on Keyser hill. A variety nearly black is found here, which is properly mica 

 schist, not granite, in connection with a variety very like that of Concord. (See Vol. 

 n, p. 510.) It is marked on the county map as the Bailey quarry. 



Fannington. There is plenty of excellent granite in Farmington, hardly distinguish- 

 able from the Concord stone. The area, as shown by the atlas map, is not large, but 

 it is sufficiently so for all practical purposes. The quarries are about a mile and a half 

 north-west from the depot, and were being successfully worked at the time of my visit 

 in 1875. 



Miscellaneous Granites. 



Several different kinds of granite are quarried in various parts of the 

 state, the most important of which will be mentioned. One not very 

 different in external appearance from the Concord is that of Haverhill. 



Haverhill. In the edge of Piermont, two miles south of Haverhill, are two granite 

 quarries, known as the Catamount and Black Hill quarries, owned by James Barstow 

 and W. H. Page. These quarries have been worked more or less for nearly 100 years. 

 They have been for several years leased to Daniel J. Winn & Co., of Haverhill, who 

 employed 4 men in quarrying and cutting in 1873, with sales amounting to $2,000; last 

 year 7 men were employed, the sales being about $3,000. The Catamount stone is 

 used principally for bridge masonry and similar purposes. The Black Hill stone is 

 adapted for the finer kinds of cemetery and ornamental work. Blocks 30 feet long and 

 5 feet square could be got from the latter quarry. 



Another granite quarry is worked by Hubert Eastman near North Haverhill. It has 

 been worked more or less since 1840, and the sales for some seasons have amounted 

 to $400. The stones have been used principally for buildings and bridge masonry. 

 The largest block split out measured 60 by 4 by 4, tapering to a point. Has been 

 used at Lisbon, Bath, and the adjoining Vermont towns. Has never been used for 

 cemetery monuments. 



Columbia Granite. Nejr Colebrook, just in the edge of Columbia, is a small area of 

 hornblende sienite, wrought as granite by George Parsons, of Colebrook. Its mineral 

 character has been described by Mr. Hawes. The peculiarities are the presence of cal- 

 cite and liquid carbonic acid. It is easily worked and handsome, coarsely crystalline 



