290 



DESCRIPTIVE MINERALOGY. 



^'^ '^' contracted, u enlarged, the stenonome of Haiiy, Fig. 



194. Also, 1, With the faces u and t contracted, and o 

 extended. 2, P enlarged. 3, r enlarged and extended 

 in the direction M. M on o 145° 9'; P on i 147° 48'; P 

 on s 150° (y; M or M' on r 133° 35' ; o on r 118° 59' ; 

 o on 95° 28' ; o on s 156° 39' ; r on M 126° 36' ; u on 

 u 131° 8'. 



There is also, near the above locality, a very beautiful 

 coccolite of a yellowish green and emerald green colour. 

 Translucent to semi-transparent. It is associated with 

 grains of a jet black colour, supposed to be black coccolite. 



Herkimer County. Green coccolite is found about three and a half miles east of Salisbury 

 Comers, in an aggregate of carbonate of lime, with which it is also intimately mixed. 



Fig. 195. 



Fig. 196. 



Jefferson County. On the banks of Vrooman 

 lake, near Oxbow, crystallized pyroxene, of a 

 green colour, is found associated with crystallized 

 mica. The forms are those represented in Figs. 

 195, 196 ; the former of which is the perioctaedre 

 of Haiiy, with the faces r and I very narrow ; and 

 Fig. 196 is the hisunitaire of Hauy, with r con- 

 tracted. M or M' on r 133° 35' ; M on s 121° 48' ; 

 s on s 120° 38'. It has not yet been iovfoA abun- 

 dantly at this locahty, but it will no doubt be so 

 hereafter, both in this and other parts of this 

 county. 

 Lewis County. In the town of Diana, crystallized pyroxene, of a jet black colour, is found 

 associated with scapolite, feldspar and sphene, in white limestone. Among the forms here 

 observed, may be mentioned the primary (Fig. 192) ; the primary with four terminal planes, 

 Fig. 197, M on 145° 9', o on o 95° 28' ; the perihexaedre wiih. two terminal planes, Fig. 198 ; 



Fig. 197. Fig. 198. Fig. 199. Fig. 200. Fig. 201. 



M 



M' 



the perioctaedre with two terminal planes. Fig. 199 ; the same with a differently modified 

 termination, Fig. 200, M on a; 134° 17', ?• on a; 126° 36', s on s 120° 38', o on s 156° 39'; 

 a six-sided prism with four terminal planes Fig. 201 ; and also the same with eight sides. 



