Re: seed starting and vermiculite

Thanks Paul, so although all is natural there is nothing available of natural 
manufacture? Just curious.

thanks

terry

> In a message dated 3/26/2002 2:38:08 PM Central Standard Time,
> Meum71@aol.com writes:
> 
> 
> > vermiculite or Perlite
> 
> Both the above products are made the same way, both are naturally
> occurring minerals.     Vermiculite is made from mica, and Perlite is
> made from volcanic glass.
> 
> Both have high water content and the minerals are heated up until they
> explode like popcorn-so to speak.
> 
> asbestice is also a naturally occurring mineral, it has a very small,
> glass like structure that is safe when not air born but when breathed
> in it becomes carcinogenic.
> 
> Mica and asbestos forming minerals occur with in the same rock
> formations -- so that during the process of making vermiculite
> asbestos is formed and can be breathed in.
> 
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