Also, primitive cultures throughout the world ritually used red ochre dust in burials. I've seem Amerindian burials that were obvious after the soil surface was scraped -- because the fill dirt was distinctly reddish due to included red ochre.
I also got in a heap o' trouble with a bunch of moms -- when I taught a batch of kids how to make "war paint" by grinding red ochre on a stone, and adding a little grease ("Vaseline").
It turns out the stuff is very difficult to remove -- and lots of kids went to school with red faces for the better part of a week... '-)
<GRIN>
TXnMA
