Let's get the important part out of the way first:

The Highland Mazourka is not a mazurka.  

It is, however, a delightful example of the nineteenth-century tendency to transpose dances from one time signature to another.  In this case, typical polka mazurka sequences have been transposed from 3/4 time to 4/4 time with a bit of extra hopping added to fill out the music, which should be of the Scottish strathspey style.  The polka mazurka itself consisted partly of polka (2/4) steps transposed to 3/4 time.  Confused by all these shifting time signatures?  Fear not; all will be made clear below...[behind the cut]