Tincar

Description: Used in South America

Oxide	Analysis	Formula
Na2O	0.06%	-
K2O	0.53%	0.03
MgO	0.30%	0.03
CaO	0.42%	0.03
TiO2	0.49%	0.03
Fe2O3	0.60%	0.02
Al2O3	22.10%	1.00
SiO2	63.50%	4.88
LOI	12.00%	n/a
Oxide Weight		406.15
Formula Weight		461.54

Notes

We do not know alot about this material, apparently it appears in recipes from South America. We have arbitrarily estimating an LOI based on the analysis.
In one glaze recipe we saw, these were no other clays, so this is probably a clay. It has very low flux content, so it is likely refractory. It has an LOI like a kaolin, but the chemistry is more like a ball clay. So to substitute for it you could try 50:50 kaolin:ball clay.

By Tony Hansen
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