--

(5) in borax. The oxide formed upon charcoal gives the
antimony reactions.

(6) in mic. salt. As in borax.

(7) with carb. soda. --

(8) Special reactions. The incrustation on the charcoal, if treated
with nitrate of cobalt assumes the
characteristic green color.

* * * * *

Mineral. Grey antimony

Formula. SbS^{3}.

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.

* * * * *

M