<<Disclaimer: Verify this information before applying it to your situation.>>

There had been a question about aluminum in bentonite.  There is plenty.
Bentonite is a mixture of clay minerals, principally montmorillonite (a
hydrated aluminum-magnesium silicate), which can contain up to about 13%
aluminum by mass.  But the real question is whether this Al is bioavailable
or not -- it might just pass right on through.

--Steve in Shiprock

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Steven C. Semken, Ph.D
Navajo Dryland Environments Laboratory
and Earth Sciences Program
Navajo Community College
POB 580, Shiprock, Navajo Nation, New Mexico 87420-0580 USA
(505) 368-2020

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Our website is http://www.ncc.cc.nm.us/
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