PHYSIOGRAPHY. 47 



Axinite. 



Fracture conchoidal. 



Surface rough, sometimes covered with Mica or Blende. 



Lustre vitreous, inclining to resinous. Color dirty green 

 tinges, inclining to black and blue. Streak white. Trans- 

 lucent on the edges . . . nearly opake. 



Hardness = 8-0. Sp. gr. =4-232. 



Fig. 50. 



Compound varieties. Twin-crystals. 

 The octahedral hemitrope. Massive: com- 

 position granular. 



1. Alone before the blowvpipe, it is infusible, and nearly so with borax, 

 or with salt of phosphorus. With soda, it melts imperfectly into a dark 

 scoria, which being melted again with soda, deposits upon the charcoal 

 an areola of oxide of zinc. 



2. Analysis. 

 By ECKEBERG. 



Alumina 60-00 



Oxide of zinc .... 24-25 

 Oxide of iron .... 9-25 

 Silica .... 4-75 



3. Automolite generally occurs imbedded in talcose slate and quartz, 

 and is accompanied by Galena, Blende, Garnet, Gadolinite, &c. It is 

 thus found at Fahlun and Brodbo in Sweden. 



In the United States, it occurs at Haddam, (Con.) along with Chryso- 

 beryl, Garnet and Columbite in granite. 



AXINITE. Tetarto-prismatic Axinite. 



Primitive form. Doubly oblique prism ? P on M= 

 134 40', P on T=115 17', M on T-= 135 10' (PHIL- 

 LIPS.) 



