pecial reactions. --

* * * * *

Mineral. Specular iron
Red haematite

Formula. Fe^{2}O^{3}

Behavior

(1) in glass-bulb. --

(2) in open tube. --

(3) on charcoal. --

(4) in forceps. V. In the blue flame is converted into
Fe^{2}O^{4}, and then behaves as the preceding.

(5) in borax. As magnetic iron ore.

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

(7) with carb. soda. --

(8) Special reactions. --

* * * * *

Mineral. Goethite

Formula. [...Fe][.H].

Behavior

(1) in glass-bulb. Evolves water.

(2) in open tube. --

(3) on charcoal. --

(4) in forceps. As specular iron.

(5) in borax. As specular iron.

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

(7) with carb. soda. --

(8) Special reactions. --

* * * * *

Mineral. Franklinite

Formula. ([.Fe][.Zn][.Mn]) ([...Fe=][...Mn=]).

Behavior

(1) in glass-bulb. --

(2) in open tube. --

(3) on charcoal. Forms a white incrustation on the charcoal,
which moistened with cobalt solution assumes a
green color.

(4) in forceps. V. In the blue flame fuses on edges and and
becomes magnetic.

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

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

(7) with carb. soda. Affords a considerable white incrustation of
ZnO.

(8) Special reactions. Gives a strong manganese reaction with nitre and
carbonate of soda.

* * * * *

Mineral. Ilmenite

Formula. [...Ti=] and [...Fe=].

Behavior

(1) in glass-bulb. --

(2) in open tube. --

(3) on charcoal. --

(4) in forceps. V. In reducing flame fuses on edges and becomes
magnetic.

(5) in borax. Gives the iron reaction.

(6) in mic. salt. In oxidizing flame exhibits the iron reaction.
In reducing flame assumes a deep brownish red
color.

(7) with carb. soda. --

(8)