430 



DESCRIPTIVE MINERALOGY. 



Fig. 513. 



]\r 



M 



.514. 



Fig. 515. 



Another locality occurs about two miles east of the village of War- 

 wick, where rutile is found in granite, associated with zircon and iron 

 pyrites. It is in the form of crystals, which are often well defined. 

 They are eight-sided prisms with four terminal planes. Fig. 513. The 

 colours are brownish and iron-black. M on I 135° 5'; Z on r 132° 

 20'; r on r 123° 15'. 



A mile east of the village of Amity, it occurs in dark brown, reddish 

 brown and pale red crystals, penetrating quartz, and associated with 

 brown tourmaline. They are long, slender and striated prisms without 

 terminations, and short eight-sided prisms terminated by three planes. 

 Two miles west of Amity is another locality, where there are found crystals of a black, 

 steel-grey or reddish brown colour, in the form of six or eiglit-sided prisms variously termi- 

 nated, and associated with crystallized hornblende, spinelle and corundum. 



The same mineral also occurs, according to Dr. Horton, two miles southwest of the village of 



Amity, in dark-blue eight-sided prisms with four 

 terminal planes, and is associated with red spi- 

 nelle, chondrodite, hornblende, mica, clintonite, 

 etc., in white limestone. 



Again it is found near the village of Warwick, 

 in long slender, black, striated prisms, penetrating 

 quartz, in geodes in blue limestone. The forms 

 represented in Figs. 514 and 515, have been ob- 

 tained in this town. M on Z 135° 5' ; M on s 161° 

 40' ; Z on s 153° 33' ; r on r 123° 15' ; r on u 

 151° 42'. 

 St. Lawrence County. A small crystal, of a red colour and high lustre, has been found 

 in quartz, near Gouverneur. It has the form of a right square prism, slightly bent and 

 striated. 



Small steel-grey crystals of rutile, in six-sided prisms rounded at the extremities, were for- 

 merly found by Mr. G. Chilton in an insulated mass of bluish quartz near the Schuyler copper 

 mine in New-Jersey.* It also occurs in white limestone at Newton in the same State. 



The locality which affords the greatest quantity of this mineral, is a ledge of chlorite slate 

 at Windsor, Massachusetts. It also occurs at Monroe and Huntington in Connecticut, and 

 in the counties of Hampshire, Berkshire and Franklin, in Massachusetts {Shepard). 



u 



M 



" American Mincralogkal Journal, 23G. 



