Evening Roger,
>>John, would this be the black 'mud' seen in volcanic bubbling mud pools?
I do know it's >>used by the ladies as a skin conditioner and even as a
face pack with great results.
All that I have seen is a light gray in color. There were mines in the
area where I grew up.
In later years, I purchased a few hundred pounds to waterproof a pond
dam. This is some amazing material.
As a test, I made a small dished hole in sand with bentonite mixed,
poured in a glass of water and it was still there at the end of the
day. It will waterproof pure sand.
After fixing the pond dam, the grapevines behind the dam died for lack
of water.
So.... I guess it works for that purpose.
There exist a number of grades and qualities of this stuff, as is
evident by the prince range.
Wayne
