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PDF(6) in mic. salt. As in
borax, but the saturated bead is
milk-white.
(7) with carb. soda. Fuses,
and is partially absorbed leaving the
lime on the surface.
(8) Special reactions. As witherite.
* * * * *
LIME.
* * * * *
Mineral. Gypsum
Formula. [.Ca][...S] + 2[.H].
Behavior
(1) in glass-bulb. Turns white,
giving off water and being
converted
into plaster of Paris.
(2) in open tube. —
(3) on charcoal. In the reducing
flame forms CaS, which has an
alkaline
reaction on test paper, and gives a
sulphur-reaction
when laid on silver and
moistened.
(4) in forceps. Fuses with
difficulty to a bead, coloring the
flame
red.
(5) in borax. Dissolves
to a clear bead, which gives the lime-
reaction.
(6) in mic. salt. As in borax.
(7) with carb. soda. Behaves as
lime. The alkaline mass laid on
silver
and moistened gives the sulphur-reaction.
(8) Special reactions. Gives the sulphuric-acid reaction.
* * * * *
Mineral. Apatite
{
Cl
Formula. [.Ca]{ -- +3[.Ca]^{3}[.....P]
{
Fl
Behavior
(1) in glass-bulb. Occasionally
decrepitates and gives off some
water.
(2) in open tube. —
(3) on charcoal. —
(4) in forceps. IV. Previously
dipped in SO^{3} colors the flame
green,
afterwards red.
(5) in borax. Dissolves
easily and when in some quantity gives
an
opaline bead.
(6) in mic. salt. Gives the lime-reaction.
(7) with carb. soda. Is infusible.
The alkali is absorbed, leaving
the
lime on the on the surface of the charcoal.
(8) Special reactions. With microcosmic
salt and oxide of copper, gives
the
chlorine-reaction. With microcosmic salt in
the
open tube evolves fluorine.
* * * * *
Mineral. Pharmacolite
Formula. [.Ca]^{2}[.....As] + 6[.H].
Behavior
(1) in glass-bulb. Gives off water, and emits an arsenical odor.
(2) in open tube. —
(3) on charcoal. Fuses to an
opaque bead and emits a strong smell
of
arsenic.
