446 CHARACTERISTIC. CLASS II. 



1. OCTAHEDRAL. Tessular. 



Cleavage, hexahedron, octahedron, dodecahedron, in- 



distinct. 



Colour white, inclining to grey. 

 H. = 5-5. 

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



Tin-White Cobalt. J. iii. 452. 



2. HEXAHEDRAL. Semi-tessular with parallel faces. 



Colour white, inclining to red. 



H. = 5-5. 



G. =6-1 ... 6-35. 



Silver-White Cobalt. J. ii. 455. 



IV. IRON-PYRITES. Tessular, rhombohedral, pris- 

 matic. 

 Colour yellow, sometimes inclining to cop- 



jter-red. 



H. = 3-5... 6-5. 

 G. = 4-4 ... 5-05. 



1. HEXAHEDRAL. Semi-tessular with parallel faces. 



Cleavage, hexahedron, octahedron. 

 Colour bronze-yellow. 

 H. =s 6-0 ... 6-5. 

 G. = 4-9 ... 5-05. 



Hexaliedral Iron*Pyrites. J. ii. 45?. 



2. PRISMATIC. Prismatic. r = 114 19'. 



Cleavage, Pr = 106 36', distinct. Traces of P + w 



*= 98 13'. 



Colour bronze-yellow. 

 H. = 6-0 ... 6-5. 

 G. = 4-65 ... 4-9. 



Prismatic Iron-Pyrites. J. ii. 461. 



3. RHOMBOHEDRAL. Di-rhombohedral. 



Cleavage, R c. Less distinct, P + co. 

 Colour bronze-yellow, inclining to copper-red. 



