Behavior

  (1) in glass-bulb.  Fuses readily and occasionally gives off a
                         small quantity of sulphur.  Strongly heated
                         forms a brown sublimate of SbS^{3} and
                         SbO^{3}.

  (2) in open tube.  Fuses and gives off SO^{2}, which passes off
                         up the tube, and dense white fumes of
                         SbO^{3} and SbO^{5} which are partly
                         deposited in the tube.

  (3) on charcoal.  Fuses and is partly absorbed by the charcoal
                         and partly volatilized, incrusting the
                         charcoal with the characteristic white
                         oxides.  Colors the flame blue.

  (4) in forceps. —­

  (5) in borax.  As the preceding.

  (6) in mic. salt.  As in borax.

  (7) with carb. soda.  Fuses and is reduced, yielding metallic
                         antimony, which behaves as the preceding
                         mineral upon charcoal.  The alkaline mass
                         gives the sulphur reaction.

  (8) Special reactions.  As the preceding.

* * * * *

Mineral.  Antimony blende

Formula. [,,,Sb]^{2} + [...Sb].

Behavior

  (1) in glass-bulb.  Fuses easily, gives off first SbO^{3} and
                         afterwards an orange colored sublimate. 
                         Strongly heated, is decomposed and gives a
                         black sublimate, which becomes brown on
                         cooling.

  (2) in open tube.  As the preceding.

  (3) on charcoal.  As the preceding.

  (4) in forceps. —­

  (5) in borax.  As native antimony.

  (6) in mic. salt.  As in borax.

  (7) with carb. soda.  As the preceding.

  (8) Special reactions.  As native antimony.

* * * * *

Mineral.  White antimony

Formula.  SbO^{3}.

Behavior

  (1) in glass-bulb.  Is sublimed and recondensed in the neck of
                         the tube.

  (2) in open tube.  As in the glass-bulb.

  (3) on charcoal.  Fuses with the evolution of dense white
                         fumes, which incrust the surface of the
                         charcoal.  In the reducing flame is partly
                         reduced, yielding metallic antimony.  Colors
                         flame blue.

  (4) in forceps.  Fuses and is volatilized, coloring the outer
                         flame blue.

  (5) in borax.  Gives the antimony reaction.