[Stoves] Learning a lot

[frank]

Dear Crispin,

Just what type of tests are done on clay to determine the molecular 
structure? and where do you have it done?
It seems clay is made up of such a variety of crystals of different 
minerals it would be a real challenge to get the percentages of each.
I would like to see a copy of the lab report if that available. I am 
wondering what type of lab equipment is required to do the things you 
want done.

And I ditto all the comments from others about learning from you.

Thanks
Frank



Crispin Pemberton-Pigott wrote:

>Dear All
>
>  
>
>>I know that I 
>>have learned a lot.
>>Lanny
>>    
>>
>
>Something that taught me a lot was getting (fortunately) a piece of that
>Baldosa tile from El Salvador.  There was a series of people involved from
>Salvadoran potter to South African ceramics lab technician. Much more to
>come in a while when I can write it properly.
>
>IMPORTANT: can someone get me a 50 gm sample of the _unfired_ Baldosa tile
>that comes from the same place as that tile did?
>
>I am not sure who brought the tile to ETHOS.  I want to nail down the
>molecular composition of the tile before it is fired. It is not possible to
>unfire it so we don't know what the molecular makeup was, only the relative
>proportions of the elements.  We are onto something important it seems,
>related to low cost clay parts for stoves.
>
>Any helpers?
>
>Thanks
>Crispin
>
>
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>
>
>  
>

-- 
Frank Shields
Soil Control Lab
42 Hangar way
Watsonville, CA  95076
(831) 724-5422 tel
(831) 724-3188 fax
frank at compostlab.com
www.compostlab.com