Mark & Pauline Donaldson-Drzazga on tue 4 jan 00
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Dear Holly,
I've tried several times to post to clayart with no luck.
Your recipe
Nepheline syenite 35
Dolomite 14
Whiting 8
Zinc oxide 7
EPK 20
Flint 16
100
Analysis:
Na2O 0.14
K2O 0.05
MgO 0.19
CaO 0.40
ZnO 0.22
Al2O3 0.41
SiO2 1.97
Al:Si=3D1.00:4.79
A:N:A=3D1.00:0.41:1.97
Expansion: 76.5
This can be solved by a straight swap of Potash Feldspar (35=25) for Neph =
Syn.
(35=25). The reason I sugest this is that I did a straight swap the other =
way
(with 35=25) and got pinholing. Give it a shot and let me know.
Happy Potting Marek http://www.moley.uk.com
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