3. Its locality is Faroe. 



DYSKOLITE. (See Saussurite.) 

 DYSLUITE. 



Primary form. Regular octahedron. 



Secondary form. Regular octahedron, with its edges trun- 

 cated. 



Cleavage parallel with the primary rather imperfect. Frac- 

 luie sub-conchoidal. Surface rough. 



Lustre vitreous, inclinirfg to resinous. Color yellowish- 

 brown or greyish brown. Streak paler than the color. Trans- 

 lucent on the edges ... to opake. 



Hardness = 7-5 ... 8-0. Sp. gr. 40..: 4'6. 



1. Before the blow-pipe, it is infusible. 



2. It is found in small quantity, at Sterling, (New Jersey,) dissemi- 

 nated through laminated Calcareous Spar, and associated with Franklin- 

 ite and Trooslitc. 



3. There is nothing but the unimportant property of color to distin- 

 guish this mineral from Automalite,to which it should, without doubt, be 

 referred. 



DYSODILE. 



Massive ; compact or laminated. Extremely fragile. 



Fracture earthy. 



Soft, scratched by the nail. Sp. gr. =^r 1-1 . . . 1-2. 



Color greenish and yellowish, to liver-brown. Streak vitre- 

 ous. Macerated in water, it becomes translucent, and its lami- 

 na acquire elasticity. When breathed upon, it emits an argil- 

 laceous odor. 



1, It burns with a considerable flame and smoke, and an almost insup- 

 portably fetid odor, leaving a residue of nearly half its weight, and unal- 



