____________________
:
A
rock
that
can
contain
shells
and
sea
creatures
.
____________________
:
A
soft
rock
made
of
very
small
grains
.
____________________
:
A
rock
made
of
quartz
,
feldspar
and
mica
.
____________________
:
A
rock
made
up
entirely
of
calcite
.
____________________
:
A
liquid
rock
.
