[Cob] "Free Bentonite in Seattle Area"

[jwellman at jwgeo.com]

   Hi,
   Bentonite is a trade name for the clay montmorillonite.
   Montmorillonite is a shrink-swell clay.  My gut feeling is that for
   cob you do not want a shrink-swell clay, but would want kaolinte
   instead.  As a side note, only marine source montmorillonite should be
   ingested.  Most other montmorillonite is sourced from hydrothermal
   systems that usually contain some toxic elements like Arsenic,
   Antimony, or Mercury, most likely in amounts that you do not want to
   ingest.
   Cheers,
   Jesse D. Wellman
   Economic Geologist
   GIS Analyst
     Reno, Nevada 89508

     -------- Original Message --------
     Subject: Coblist Digest, Vol 5, Issue 180
     From: coblist-request at deatech.com
     Date: Fri, December 07, 2007 12:00 pm
     To: coblist at deatech.com
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     1. Free Clay...Bentonite Seattle area (Dulane)
     -------------------------------------------------------------------
     ---
     Message: 1
     Date: Fri, 7 Dec 2007 11:58:50 -0800
     From: "Dulane" <[5]silkworm at spiderhollow.com>
     Subject: [Cob] Free Clay...Bentonite Seattle area
     To: "Cob" <[6]coblist at deatech.com>
     Message-ID: <010b01c8390b$96cd4e80$0301a8c0 at cerviche>
     Content-Type: text/plain; charset="iso-8859-1"
     Hey...
     It might not be the best clay for a cob project, but it is great
     for
     plastering and other projects.
     Any input on cobbing with bentonite?
     It is a white clay. It is often used in detox remedies, as it is
     ash based.
     It is a desiccant, as it draws water, more than some clays.
     Anyway...someone has 200+ 50 pound bags to get rid of. It sounds
     like way
     more than that is also available. It might even be powdered!
     I'd like 1 bag, but I'm not sure about the rest.
     Here's the info:
     Here's the info:
     Available in Seattle, WA:
     BAGS OF BENTONITE CLAY AVAILABLE. FREE. APPROX 200 50-LB BAGS.
     APPROX
     1800 100-LB BAGS. PICK UP AT MACMILLAN-PIPER, 150 S. HORTON ST.,
     SEATTLE, WA
     98134
     CONTACT: Suzanne Tilley, MacMillan-Piper Inc..
     Phone: 206-624-5135
     Fax: 206-624-2449
     [7]stilley at macpiper.com
     Or check for listing ID A159015 at:
     [8]http://www.govlink.org/hazwaste/business/imex/
     "If man makes it, don't eat it."
     Jack La Lanne
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     End of Coblist Digest, Vol 5, Issue 180
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