Test of adding natural quartz and mica to porcelain.
Porcelain is Taida 609 fired to 1310 celsius in reduction.
Top row: 5, 10, 15, 20% addition of silica to 100g porcelain slip
Bottom row: 5, 10, 15, 20% addition of mica to 100g porcelain slip
The natural quartz has a ton of impurities. Also I did not consistently grind or filter the quartz. Addition of quartz impedes translucency.
I’m not sure exactly what type of mica I used. However, it seems pretty clean and of uniform particle size. Didn’t notice translucency affected much. The last tile is a little thicker than the others so appears more opaque.