Strontium is an earth alkali element,
that always an urge for reaction felt.
Halogenides, Oxygen, Sulphur,
even Nitrogen, but never pure.

It is therefore easy flameable,
and as element very unstable.
Named after the scottish village Strontian,
where the story of the element began.

Back in time when electrolysis was new,
and only known from few.
Humprey Davy isolated it,
it was only impure a bit.

But it had its golden shimmer,
and a fantastic glimmer.
For a short time until there was interaction,
with whatever was ready for reaction.

Strontium as metal is popular,
in firework a shooting star.
Deep red the glow
makes the spectacle in a show.

But it is better to add it to something,
different benefits it can bring.
Structural enhancement if alloyed
to alumnium-silicon, brittle needles destroyed.

In ceramic magnets a hit,
of world production just a little bit.
Strontium can getter Sulfur and Phosphorus,
it is added to steel thus.

Glow in the dark „children toys“,
are made form Alumnium Strontium alloys.
As adults would not play with that,
not to mention the biological inert fact.

Very astonishing in old TV sets required,
when the first moving pictures admired.
Strontium was added to interdict X-ray formation,
it can inhibit some sort of nuclear radiation.

It is similar to Calcium,
our bodies do not require Strontium.
There is a Radiolaria a lifeform in the sea,
which builds it skeleton Calcium free.

This feature gives it a unique application,
you can track archiological migration.
Humans dependent on their origin,
have more or less Strontium built in.

Same goes for animals on land,
an archiological method in the end.
To understand movement of civilisation,
or ancient resource derivation.

Strontium is used here and there,
some beautiful, some useful to be fair.
But capturing X-rays is a hardcore skill,
the everlasting reaction a state of will.

A silent time witness, offering information,
of human and sea level migration.
A special element, a shooting star,
I mean glow in the dark is spectacular!