CLASS II. 



ORDERS. 395 



IV. ORDEB. MALACHITE. 



Non-metallic. 



Colour blue, green, brown. 



Cleavage not monotomous. 



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



G. = 2-0 ... 4-6. 



Colour or streak brown : H. = 3-0 and less, 

 G. above *5. 



Streak blue : H. = 4-0 and less. 



Streak uncoloured : G. == 2-2 and less, 

 H. under 8-0. 



V. OBDEB. MICA. 



Cleavage monotomous, eminent. 

 H. = 1-0... 4-5. 

 G. = 1-8 ...3-2. 



Metallic : G. under S-2. 



Non-metallic : G. above 



H. 3*0 and more : rhombohedral. 



G. under 2-5 : metallic. 



