PHYSIOGRAPHY. 



Achmite. Aischynite. 



3. It is found engaged in Quartz near Kongsberg in Norway. 



4. This mineral has been referred to Pyroxene by several mineralo- 

 gists, from which substance, however^ it appears sufficiently distinct. 



ACHYRITE. (See Dioptase.) 



ACICULAR BISMUTH GLANCE. (See Needle-Ore.) 



ACTINOTE. (See Hornblende.) 



ACTYNOLITE. (See Hornblende.) 



ADAMANTINE-SPAR. (See Corundum.) 



ADINOLE. (See Petrosilex.) 



ADIPOCIRE MINERAL. (See Hatchetine.) 



ADULARIA. 



The most transparent and pure varieties of JLlbite and Feld- 

 spar, q. v. 



AE^UINOLITE. (See Pitchstone.) 



AEROSITE. (See Red Silver.) 



AGALMATOLITE. (See Figure-stone.) 



AGARIC MINERAL. (See Calcareous Spar.) 



AGATE. (See Quartz.) 

 AISCHYNITE. Prismatoi dal Eru throne-Ore. 



Primary form. Right rhombic prism. 



Secondary form. The primary, terminated by 4-sided 

 pyramids. 



Lustre sub-metallic. Color black. Streak dark grey to 

 black. 



Hardness =5-0... 7-0. Sp. gr. =5-14. ..5-55. 



1. In the matrass, it yields a little moisture, without altering its appear- 

 ance. In an open tube it affords distinct traces of Fluoric acid. At an 

 incipient red heat, upon charcoal, or in the pJatina forceps, it puffs up 

 and enlarges in all its dimensions, especially in the direction of its cleav- 

 age, curls over to one side and remains without fusing of a dull yellow 

 color. With borax, it is dissolved in large quantities; the glass present- 

 ing a dark yellow color both in the oxidation and reduction fire of the 

 blow-pipe. When the mineral is added in excess, the glass after cool- 



