450 CHARACTERISTIC. CLASS II. 



H, = 2-0 ... 2-5. 

 G. = 6-1 ... 6-4. 



1. PRISMATIC. Prismatic. 



Cleavage, P -f co = 90, nearly; also Pr + co and 

 Pr + co, one of them highly perfect. 



Prismatic Bismuth-Glance. J. iii. 19. 



VII. ANTIMONY-GLANCE. Prismatic. 



Colour lead-grey, not blackish, steel-grey. 

 Cleavage, perfect. 

 H. = 1-5 ... 2-5. 

 G. = 4-2 ... 5-8. 



G. under 5-3 : H. = 2-0 : thin laminae 



not very flexible. 

 G. above 5-3 : colour steel-grey. 



1. PRISMATIC. Prismatic. 



Cleavage, Pr + co, perfect in a high degree. Less ap- 

 parent, Pr + co. 

 Colour pure steel-grey. 

 H. = 1-5 ... 2-0. 

 G. = 5-7 ... 5-8. 



Prismatic Antimony Glance. J. iii. 21. 



2. PRISMATOIDAL. Prismatic. P = 109 16', 108 10', 



110 59'. 

 Cleavage, ?r + , highly perfect. Less apparent, 



P co. P + co as 90 45'. Pr + co. 

 Colour lead-grey. 

 H. = 2-0. 

 G. = 4-2 ... 47. 



Grey Antimony. J. iii. 23. 



3. AXOTOMOUS. Prismatic. 



Cleavage, P co, perfect. P + co = 101 20 7 ; Pr -I- so. 

 Colour steel-grey. 



