264 



PHYSIOGRAPHY. 



Wagnerite. 



WAGNERITE. Hemi-prismatic Fluor-Haloide. 

 PARTSCH. 



Primary form. Oblique rhombic prism. M on M= 

 95 25'. PonM=10920'. 



Secondary form. The primary, having its lateral edges 

 bevelled, the new planes upon the obtuse edges inclining 

 under angles of 117 32', those upon the lateral edges un- 

 der angles of 122 25'. The bevelling faces on the obtuse 

 edges are likewise truncated. The annexed figure repre- 



Fig. 468. 



sents the top of the crystal, a is not a right angle ; 6, k, 

 and g, if enlarged, would produce parallel edges of combi- 

 nation. 



Lustre vitreous. Color several shades of yellow, some- 

 times nearly orange-yellow, often inclining to grey. Streak 

 white. Translucent. 



Hardness=5-0 . . . 5-5. Sp. gr. = 3-01 ... 3-13. 



1. Before the blow-pipe, it melts with difficulty into a dark greenish 

 grey glass. It easily dissolves with borax and salt of phosphorus, into a 

 transparent glass. Treated with warm sulphuric acid, it evolves fluoric 

 acid in the state of powder. 



Phosphoric acid 

 Magnesia 

 Fluoric acid 

 Oxide of iron 

 Oxide of manganese 



2. Analysis. 

 By FUCHS. 



41-73 



46-66 



650 



5-00 



0-50 



