Here's a chart showing "grain sizes":-


http://upload.wikimedia.org/wikipedia/commons/thumb/e/e2/Wentworth-Grain-Size-Chart.pdf/page1-463px-Wentworth-Grain-Size-Chart.pdf.jpg


Although it would be fair to expect the fine stuff to have blown away by now, it would be reasonable to expect all the other sizes to be found in the same location if they're water worn.


 


 



It's life Jim, but not as WE know it.
Live long and prosper.