438 CHARACTEllISTIC. CLASS II. 



H. = 6-0. 



G. =6-0... 6-3. 



1. PRISMATIC. Prismatic. 

 Cleavage, prismatoidal. 



Tantalite. ii. 390. 



VII. URANIUM-ORE. Form not determinable. 



Streak black. 



H. = 5-5. 



G. = 64 ... 6-6. 



1. UNCLEAVABLE. Renfform, massive. 

 Cleavage, none. 



Uncleavdble Uranium-Ore. J. ii. 393. 



VIII. CERIUM-ORE. Form not determinable. 

 Streak uncoloured. 



H. sp 5-5. 



G. =4-9 ... 5-0. 



1. UNCLEAVABLE. Massive. 

 Cleavage, none. 



Cerite. ii. 394. 



IX. CHROME-ORE. Tessular. 



Streak brown. 



H. = 55. 



G. = 4-4 ... 4-5. 



1. OCTAHEDRAL. Tessular. 

 Cleavage, octahedron. 



Prismatic Chrome-Ore or Chromate of Iron. J. ii. 396. 



X. IRON-ORE. Tessular, rhombohedral, prismatic. 



Streak red, brown, black. 



