CHARACTERISTIC. CLASS II. 



1. DIATOMOUS. Prismatic. 



Cleavage prismatoidal. 

 Lustre metallic-pearly. 

 H. = 3-5 ... 4-0. 

 G. = 2-6 ... 2-8. 



Diatomous Schiller-Spar. J. ii. 206. 



p 



2. HEMI-PRJSMATIC. Hemi-prismatic. . 



Cleavage, Pr + oo. Less distinct, _ = 72 and P + co 



= 94. Traces of Pr + vs. 

 Lustre metallic-pearly. 

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

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



Bronztte. ii. 207- 



3. PRISMATOIDAL. Prismatic. 



Cleavage, Pr + co. Less distinct, P + co = 93 (near- 

 ly). Pr + co. 

 Lustre metallic-pearly. 

 H. = 6-0. 

 G. = 3-3 ... 3-4. 



Hypcrsthene. ii. 210. 



4. PRISMATIC. Prismatic. 



Cleavage, Pr + co. Somewhat less distinct, P + co = 



124 30'. fr-fos. 

 Lustre almost metallic-pearly. 

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

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



Anthophyllite. ii. 211. 



II. DiSTHENE-SpAR. Prismatic. 

 H. = 5-0 ... 7-0. 

 G. = 6-0 ... 3-7. 



1. PRISMATIC. Tetarto-prismatic. 



Cleavage, two faces, one of them more distinct, per- 

 fect and eminent. Inclination = 100 50 7 . 



Kyanite. ii. 213. 



