CHAKACTEBISTIC, CLASS II. 



II. ORDER. BARYTE. 



Non-metallic. 



Streak uncoloured or orange-yellow. 



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



G. = 3-3 ... 7-3. 



Cleavage monotomous : G. = 4-0 and less ; 



or = 5*0 and more. 

 Lustre adamantine or imperfect metallic : 



G. = 5-0 and more. 



Streak orange-yellow : G. = 6*0 and more. 

 H. = 5-0 : G. under 4r5. 

 G. under 4-0 ; and H. = 5-0 : cleavage di- 

 prismatic. 



III. ORDER. KERATE. 



Non-metallic. 



Streak uncoloured. 



Cleavage not monotomous, not perfect peritomous. 



H. = 1-0... 20. 



G. above 5*5. 



