As on charcoal. Singes flame green ([.....P]).

(5) in borax. Gives the iron reaction.

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

(7) with carb. soda. In reducing flame becomes magnetic and fuses to
a black saggy mass.

(8) Special reactions. --

* * * * *

Mineral. Iriphyline

Formula. ([.Fe][.Mn][.Li])^{3}[.....P].

Behavior

(1) in glass-bulb. Gives off water, having an alkaline reaction,
and assumes a metallic lustre resembling
graphite.

(2) in open tube. --

(3) on charcoal. Fuses readily to a black magnetic bead with a
metallic lustre.

(4) in forceps. I. On platinum wire colors the flame crimson
([.Li]) and green ([.....P]), towards the point
fuses to a black magnetic bead.

(5) in borax. Gives the iron and manganese reactions.

(6) in mic. salt. Gives the iron reaction which overpowers that of
the manganese.

(7) with carb. soda. Forms an infusible porous mass, which under
the reducing flame becomes magnetic.

(8) Special reactions. Gives the manganese reaction with nitre and
carbonate of soda on platinum foil.

* * * * *

Mineral. Scorodite

Formula. [...Fe=][.....As] + 4[.H].

Behavior

(1) in glass-bulb. Evolves water.

(2) in open tube. Gives off water and AsO^{3}.

(3) on charcoal. Emits arsenical fume and in the reducing flame
fuses to a magnetic mass having a metallic
lustre.

(4) in forceps. I. As on charcoal. Colors the outer flame
blue.

(5) in borax. The roasted mineral gives an iron reaction.

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

(7) with carb. soda. As alone on charcoal.

(8) Special reactions. Gives the arsenic reactions.

* * * * *

Mineral. Cube ore

Formula. [.Fe]^{3}[.....As] +
[...Fe=]^{3}[.....As]^{2} + 18[.H].

Behavior

(1) in glass-bulb. Evolves much water.

(2) in open tube. As the preceding.

(3) on c