Minerals
are
structured
____________________
that
have
specific
chemical
components
.
There
are
over
4000
types
of
____________________
in
the
world
.
We
classify
minerals
according
to
their
chemical
____________________
.
Elements
,
sulphates
and
____________________
are
some
____________________
of
minerals
.
We
can
classify
minerals
according
to
their
____________________
characteristics
,
too
.
