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cornwall stone substitution and what is mollochite?

updated wed 8 aug 01

 

Fay & Ralph Loewenthal on tue 7 aug 01


Lorraine I found a fantastic substition in=20
James Chappell's book "The Potter's=20
complete book of Clay and Glazes". It
worked better than the genuine article we
get here in South Africa. Here is the recipe
67 parts Feldspar (I used potash)
22 " Silica
11 " Kaolin (China Clay)
Hope this helps from Ralph in Cape Town

I would also like to know what is=20
Mollochite, and what is its chemical=20
compostion? TIA Ralph